Merge pull request #1815 from PurpleI2P/openssl

Recent changes

Makefile

@@ -54,15 +54,15 @@ ifneq (, $(findstring darwin, $(SYS)))
 	else
 		include Makefile.osx
 	endif
+else ifneq (, $(findstring mingw, $(SYS))$(findstring windows-gnu, $(SYS))$(findstring cygwin, $(SYS)))
+	DAEMON_SRC += Win32/DaemonWin32.cpp Win32/Win32App.cpp Win32/Win32Service.cpp Win32/Win32NetState.cpp
+	include Makefile.mingw
 else ifneq (, $(findstring linux, $(SYS))$(findstring gnu, $(SYS)))
 	DAEMON_SRC += $(DAEMON_SRC_DIR)/UnixDaemon.cpp
 	include Makefile.linux
 else ifneq (, $(findstring freebsd, $(SYS))$(findstring openbsd, $(SYS)))
 	DAEMON_SRC += $(DAEMON_SRC_DIR)/UnixDaemon.cpp
 	include Makefile.bsd
-else ifneq (, $(findstring mingw, $(SYS))$(findstring windows-gnu, $(SYS))$(findstring cygwin, $(SYS)))
-	DAEMON_SRC += Win32/DaemonWin32.cpp Win32/Win32App.cpp Win32/Win32Service.cpp Win32/Win32NetState.cpp
-	include Makefile.mingw
 else # not supported
 	$(error Not supported platform)
 endif

daemon/Daemon.cpp

@@ -298,15 +298,14 @@ namespace util
 
 		bool ntcp2; i2p::config::GetOption("ntcp2.enabled", ntcp2);
 		bool ssu2; i2p::config::GetOption("ssu2.enabled", ssu2);
-		bool ssu; i2p::config::GetOption("ssu", ssu);
 		bool checkInReserved; i2p::config::GetOption("reservedrange", checkInReserved);
 		LogPrint(eLogInfo, "Daemon: Starting Transports");
-		if(!ssu) LogPrint(eLogInfo, "Daemon: SSU disabled");
+		if(!ssu2) LogPrint(eLogInfo, "Daemon: SSU2 disabled");
 		if(!ntcp2) LogPrint(eLogInfo, "Daemon: NTCP2 disabled");
 
 		i2p::transport::transports.SetCheckReserved(checkInReserved);
-		i2p::transport::transports.Start(ntcp2, ssu, ssu2);
+		i2p::transport::transports.Start(ntcp2, ssu2);
-		if (i2p::transport::transports.IsBoundSSU() || i2p::transport::transports.IsBoundSSU2() || i2p::transport::transports.IsBoundNTCP2())
+		if (i2p::transport::transports.IsBoundSSU2() || i2p::transport::transports.IsBoundNTCP2())
 			LogPrint(eLogInfo, "Daemon: Transports started");
 		else
 		{

daemon/HTTPServer.cpp

@@ -311,12 +311,9 @@ namespace http {
 				s << "<tr>\r\n<td>";
 				switch (address->transportStyle)
 				{
-					case i2p::data::RouterInfo::eTransportNTCP:
+					case i2p::data::RouterInfo::eTransportNTCP2:
 						s << "NTCP2";
 					break;
-					case i2p::data::RouterInfo::eTransportSSU:
-						s << "SSU";
-					break;
 					case i2p::data::RouterInfo::eTransportSSU2:
 						s << "SSU2";
 					break;
@@ -843,46 +840,6 @@ namespace http {
 			if (!sessions.empty ())
 				ShowTransportSessions (s, sessions, "NTCP2");
 		}
-		auto ssuServer = i2p::transport::transports.GetSSUServer ();
-		if (ssuServer)
-		{
-			auto sessions = ssuServer->GetSessions ();
-			if (!sessions.empty ())
-			{
-				s << "<div class='slide'><label for='slide_ssu'><b>SSU</b> ( " << (int) sessions.size() << " )</label>\r\n<input type=\"checkbox\" id=\"slide_ssu\" />\r\n<div class=\"slidecontent list\">";
-				for (const auto& it: sessions)
-				{
-					s << "<div class=\"listitem\">\r\n";
-					auto endpoint = it.second->GetRemoteEndpoint ();
-					if (it.second->IsOutgoing ()) s << " &#8658; ";
-					s << endpoint.address ().to_string () << ":" << endpoint.port ();
-					if (!it.second->IsOutgoing ()) s << " &#8658; ";
-					s << " [" << it.second->GetNumSentBytes () << ":" << it.second->GetNumReceivedBytes () << "]";
-					if (it.second->GetRelayTag ())
-						s << " [itag:" << it.second->GetRelayTag () << "]";
-					s << "</div>\r\n" << std::endl;
-				}
-				s << "</div>\r\n</div>\r\n";
-			}
-			auto sessions6 = ssuServer->GetSessionsV6 ();
-			if (!sessions6.empty ())
-			{
-				s << "<div class='slide'><label for='slide_ssuv6'><b>SSUv6</b> ( " << (int) sessions6.size() << " )</label>\r\n<input type=\"checkbox\" id=\"slide_ssuv6\" />\r\n<div class=\"slidecontent list\">";
-				for (const auto& it: sessions6)
-				{
-					s << "<div class=\"listitem\">\r\n";
-					auto endpoint = it.second->GetRemoteEndpoint ();
-					if (it.second->IsOutgoing ()) s << " &#8658; ";
-					s << "[" << endpoint.address ().to_string () << "]:" << endpoint.port ();
-					if (!it.second->IsOutgoing ()) s << " &#8658; ";
-					s << " [" << it.second->GetNumSentBytes () << ":" << it.second->GetNumReceivedBytes () << "]";
-					if (it.second->GetRelayTag ())
-						s << " [itag:" << it.second->GetRelayTag () << "]";
-					s << "</div>\r\n" << std::endl;
-				}
-				s << "</div>\r\n</div>\r\n";
-			}
-		}
 		auto ssu2Server = i2p::transport::transports.GetSSU2Server ();
 		if (ssu2Server)
 		{

daemon/UPnP.cpp

@@ -248,10 +248,10 @@ namespace transport
 	{
 		switch (address->transportStyle)
 		{
-			case i2p::data::RouterInfo::eTransportNTCP:
+			case i2p::data::RouterInfo::eTransportNTCP2:
 				return "TCP";
 				break;
-			case i2p::data::RouterInfo::eTransportSSU:
+			case i2p::data::RouterInfo::eTransportSSU2:
 			default:
 				return "UDP";
 		}

i18n/I18N.cpp

@@ -0,0 +1,36 @@
+/*
+* Copyright (c) 2021-2022, The PurpleI2P Project
+*
+* This file is part of Purple i2pd project and licensed under BSD3
+*
+* See full license text in LICENSE file at top of project tree
+*/
+
+#include "ClientContext.h"
+#include "I18N_langs.h"
+#include "I18N.h"
+
+namespace i2p
+{
+namespace i18n
+{
+	void SetLanguage(const std::string &lang)
+	{
+		const auto it = i2p::i18n::languages.find(lang);
+		if (it == i2p::i18n::languages.end()) // fallback
+			i2p::client::context.SetLanguage (i2p::i18n::english::GetLocale());
+		else
+			i2p::client::context.SetLanguage (it->second.LocaleFunc());
+	}
+
+	std::string translate (const std::string& arg)
+	{
+		return i2p::client::context.GetLanguage ()->GetString (arg);
+	}
+
+	std::string translate (const std::string& arg, const std::string& arg2, const int& n)
+	{
+		return i2p::client::context.GetLanguage ()->GetPlural (arg, arg2, n);
+	}
+} // i18n
+} // i2p

i18n/I18N.h

@@ -9,30 +9,68 @@
 #ifndef __I18N_H__
 #define __I18N_H__
 
-#include "ClientContext.h"
+#include <string>
+#include <map>
+#include <utility>
+#include <functional>
 
 namespace i2p
 {
 namespace i18n
 {
-	inline void SetLanguage(const std::string &lang)
+	class Locale
 	{
-		const auto it = i2p::i18n::languages.find(lang);
+		public:
-		if (it == i2p::i18n::languages.end()) // fallback
+			Locale (
-			i2p::client::context.SetLanguage (i2p::i18n::english::GetLocale());
+				const std::string& language,
-		else
+				const std::map<std::string, std::string>& strings,
-			i2p::client::context.SetLanguage (it->second.LocaleFunc());
+				const std::map<std::string, std::vector<std::string>>& plurals,
-	}
+				std::function<int(int)> formula
-
+			): m_Language (language), m_Strings (strings), m_Plurals (plurals), m_Formula (formula) { };
-	inline std::string translate (const std::string& arg)
-	{
-		return i2p::client::context.GetLanguage ()->GetString (arg);
-	}
 
-	inline std::string translate (const std::string& arg, const std::string& arg2, const int& n)
+			// Get activated language name for webconsole
-	{
+			std::string GetLanguage() const
-		return i2p::client::context.GetLanguage ()->GetPlural (arg, arg2, n);
+			{
-	}
+				return m_Language;
+			}
+
+			std::string GetString (const std::string& arg) const
+			{
+				const auto it = m_Strings.find(arg);
+				if (it == m_Strings.end())
+				{
+					return arg;
+				}
+				else
+				{
+					return it->second;
+				}
+			}
+
+			std::string GetPlural (const std::string& arg, const std::string& arg2, const int& n) const
+			{
+				const auto it = m_Plurals.find(arg2);
+				if (it == m_Plurals.end()) // not found, fallback to english
+				{
+					return n == 1 ? arg : arg2;
+				}
+				else
+				{
+					int form = m_Formula(n);
+					return it->second[form];
+				}
+			}
+
+		private:
+			const std::string m_Language;
+			const std::map<std::string, std::string> m_Strings;
+			const std::map<std::string, std::vector<std::string>> m_Plurals;
+			std::function<int(int)> m_Formula;
+	};
+	
+	void SetLanguage(const std::string &lang);
+	std::string translate (const std::string& arg);
+	std::string translate (const std::string& arg, const std::string& arg2, const int& n);
 } // i18n
 } // i2p
 

i18n/I18N_langs.h

@@ -9,60 +9,12 @@
 #ifndef __I18N_LANGS_H__
 #define __I18N_LANGS_H__
 
+#include "I18N.h"
+
 namespace i2p
 {
 namespace i18n
 {
-	class Locale
-	{
-		public:
-			Locale (
-				const std::string& language,
-				const std::map<std::string, std::string>& strings,
-				const std::map<std::string, std::vector<std::string>>& plurals,
-				std::function<int(int)> formula
-			): m_Language (language), m_Strings (strings), m_Plurals (plurals), m_Formula (formula) { };
-
-			// Get activated language name for webconsole
-			std::string GetLanguage() const
-			{
-				return m_Language;
-			}
-
-			std::string GetString (const std::string& arg) const
-			{
-				const auto it = m_Strings.find(arg);
-				if (it == m_Strings.end())
-				{
-					return arg;
-				}
-				else
-				{
-					return it->second;
-				}
-			}
-
-			std::string GetPlural (const std::string& arg, const std::string& arg2, const int& n) const
-			{
-				const auto it = m_Plurals.find(arg2);
-				if (it == m_Plurals.end()) // not found, fallback to english
-				{
-					return n == 1 ? arg : arg2;
-				}
-				else
-				{
-					int form = m_Formula(n);
-					return it->second[form];
-				}
-			}
-
-		private:
-			const std::string m_Language;
-			const std::map<std::string, std::string> m_Strings;
-			const std::map<std::string, std::vector<std::string>> m_Plurals;
-			std::function<int(int)> m_Formula;
-	};
-
 	struct langData
 	{
 		std::string LocaleName; // localized name

libi2pd/BloomFilter.cpp

@@ -1,77 +0,0 @@
-/*
-* Copyright (c) 2013-2020, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#include "BloomFilter.h"
-#include "I2PEndian.h"
-#include <array>
-#include <openssl/sha.h>
-
-namespace i2p
-{
-namespace util
-{
-
-	/** @brief decaying bloom filter implementation */
-	class DecayingBloomFilter : public IBloomFilter
-	{
-	public:
-
-		DecayingBloomFilter(const std::size_t size)
-		{
-			m_Size = size;
-			m_Data = new uint8_t[size];
-		}
-
-		/** @brief implements IBloomFilter::~IBloomFilter */
-		~DecayingBloomFilter()
-		{
-			delete [] m_Data;
-		}
-
-		/** @brief implements IBloomFilter::Add */
-		bool Add(const uint8_t * data, std::size_t len)
-		{
-			std::size_t idx;
-			uint8_t mask;
-			Get(data, len, idx, mask);
-			if(m_Data[idx] & mask) return false; // filter hit
-			m_Data[idx] |= mask;
-			return true;
-		}
-
-		/** @brief implements IBloomFilter::Decay */
-		void Decay()
-		{
-			// reset bloom filter buffer
-			memset(m_Data, 0, m_Size);
-		}
-
-	private:
-		/** @brief get bit index for for data */
-		void Get(const uint8_t * data, std::size_t len, std::size_t & idx, uint8_t & bm)
-		{
-			bm = 1;
-			uint8_t digest[32];
-			// TODO: use blake2 because it's faster
-			SHA256(data, len, digest);
-			uint64_t i = buf64toh(digest);
-			idx = i % m_Size;
-			bm <<= (i % 8);
-		}
-
-		uint8_t * m_Data;
-		std::size_t m_Size;
-	};
-
-
-	BloomFilterPtr BloomFilter(std::size_t capacity)
-	{
-		return std::make_shared<DecayingBloomFilter>(capacity);
-	}
-}
-}

libi2pd/BloomFilter.h

@@ -1,39 +0,0 @@
-/*
-* Copyright (c) 2013-2020, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#ifndef BLOOM_FILTER_H_
-#define BLOOM_FILTER_H_
-#include <memory>
-#include <cstdint>
-
-namespace i2p
-{
-namespace util
-{
-
-	/** @brief interface for bloom filter */
-	struct IBloomFilter
-	{
-
-		/** @brief destructor */
-		virtual ~IBloomFilter() {};
-		/** @brief add entry to bloom filter, return false if filter hit otherwise return true */
-		virtual bool Add(const uint8_t * data, std::size_t len) = 0;
-		/** @brief optionally decay old entries */
-		virtual void Decay() = 0;
-	};
-
-	typedef std::shared_ptr<IBloomFilter> BloomFilterPtr;
-
-	/** @brief create bloom filter */
-	BloomFilterPtr BloomFilter(std::size_t capacity = 1024 * 8);
-
-}
-}
-
-#endif

libi2pd/Config.cpp

@@ -64,7 +64,7 @@ namespace config {
 			("bandwidth", value<std::string>()->default_value(""),            "Transit traffic bandwidth limit: integer in KBps or letters: L (32), O (256), P (2048), X (>9000)")
 			("share", value<int>()->default_value(100),                       "Limit of transit traffic from max bandwidth in percents. (default: 100)")
 			("ntcp", bool_switch()->default_value(false),                     "Ignored. Always false")
-			("ssu", bool_switch()->default_value(false),                      "Enable SSU transport (default: disabled)")
+			("ssu", bool_switch()->default_value(false),                      "Ignored. Always false")
 			("ntcpproxy", value<std::string>()->default_value(""),            "Ignored")
 #ifdef _WIN32
 			("svcctl", value<std::string>()->default_value(""),               "Ignored")

libi2pd/Crypto.cpp

@@ -239,55 +239,6 @@ namespace crypto
 
 	static BIGNUM * (* g_ElggTable)[255] = nullptr;
 
-// DH
-
-	DHKeys::DHKeys ()
-	{
-		m_DH = DH_new ();
-		DH_set0_pqg (m_DH, BN_dup (elgp), NULL, BN_dup (elgg));
-		DH_set0_key (m_DH, NULL, NULL);
-	}
-
-	DHKeys::~DHKeys ()
-	{
-		DH_free (m_DH);
-	}
-
-	void DHKeys::GenerateKeys ()
-	{
-		BIGNUM * priv_key = NULL, * pub_key = NULL;
-#if !defined(__x86_64__) // use short exponent for non x64
-		priv_key = BN_new ();
-		BN_rand (priv_key, ELGAMAL_SHORT_EXPONENT_NUM_BITS, 0, 1);
-#endif
-		if (g_ElggTable)
-		{
-#if defined(__x86_64__)
-			priv_key = BN_new ();
-			BN_rand (priv_key, ELGAMAL_FULL_EXPONENT_NUM_BITS, 0, 1);
-#endif
-			auto ctx = BN_CTX_new ();
-			pub_key = ElggPow (priv_key, g_ElggTable, ctx);
-			DH_set0_key (m_DH, pub_key, priv_key);
-			BN_CTX_free (ctx);
-		}
-		else
-		{
-			DH_set0_key (m_DH, NULL, priv_key);
-			DH_generate_key (m_DH);
-			DH_get0_key (m_DH, (const BIGNUM **)&pub_key, (const BIGNUM **)&priv_key);
-		}
-
-		bn2buf (pub_key, m_PublicKey, 256);
-	}
-
-	void DHKeys::Agree (const uint8_t * pub, uint8_t * shared)
-	{
-		BIGNUM * pk = BN_bin2bn (pub, 256, NULL);
-		DH_compute_key (shared, pk, m_DH);
-		BN_free (pk);
-	}
-
 // x25519
 	X25519Keys::X25519Keys ()
 	{
@@ -601,77 +552,6 @@ namespace crypto
 		BN_CTX_free (ctx);
 	}
 
-// HMAC
-	const uint64_t IPAD = 0x3636363636363636;
-	const uint64_t OPAD = 0x5C5C5C5C5C5C5C5C;
-
-
-	static const uint64_t ipads[] = { IPAD, IPAD, IPAD, IPAD };
-	static const uint64_t opads[] = { OPAD, OPAD, OPAD, OPAD };
-
-	void HMACMD5Digest (uint8_t * msg, size_t len, const MACKey& key, uint8_t * digest)
-	// key is 32 bytes
-	// digest is 16 bytes
-	// block size is 64 bytes
-	{
-		uint64_t buf[256];
-		uint64_t hash[12]; // 96 bytes
-#if (defined(__x86_64__) || defined(__i386__)) && defined(__AVX__) // not all X86 targets supports AVX (like old Pentium, see #1600)
-		if(i2p::cpu::avx)
-		{
-			__asm__
-				(
-					"vmovups %[key], %%ymm0 \n"
-					"vmovups %[ipad], %%ymm1 \n"
-					"vmovups %%ymm1, 32(%[buf]) \n"
-					"vxorps %%ymm0, %%ymm1, %%ymm1 \n"
-					"vmovups %%ymm1, (%[buf]) \n"
-					"vmovups %[opad], %%ymm1 \n"
-					"vmovups %%ymm1, 32(%[hash]) \n"
-					"vxorps %%ymm0, %%ymm1, %%ymm1 \n"
-					"vmovups %%ymm1, (%[hash]) \n"
-					"vzeroall \n" // end of AVX
-					"movups %%xmm0, 80(%[hash]) \n" // zero last 16 bytes
-					:
-					: [key]"m"(*(const uint8_t *)key), [ipad]"m"(*ipads), [opad]"m"(*opads),
-						[buf]"r"(buf), [hash]"r"(hash)
-					: "memory", "%xmm0" // TODO: change to %ymm0 later
-					);
-		}
-		else
-#endif
-		{
-			// ikeypad
-			buf[0] = key.GetLL ()[0] ^ IPAD;
-			buf[1] = key.GetLL ()[1] ^ IPAD;
-			buf[2] = key.GetLL ()[2] ^ IPAD;
-			buf[3] = key.GetLL ()[3] ^ IPAD;
-			buf[4] = IPAD;
-			buf[5] = IPAD;
-			buf[6] = IPAD;
-			buf[7] = IPAD;
-			// okeypad
-			hash[0] = key.GetLL ()[0] ^ OPAD;
-			hash[1] = key.GetLL ()[1] ^ OPAD;
-			hash[2] = key.GetLL ()[2] ^ OPAD;
-			hash[3] = key.GetLL ()[3] ^ OPAD;
-			hash[4] = OPAD;
-			hash[5] = OPAD;
-			hash[6] = OPAD;
-			hash[7] = OPAD;
-			// fill last 16 bytes with zeros (first hash size assumed 32 bytes in I2P)
-			memset (hash + 10, 0, 16);
-		}
-
-		// concatenate with msg
-		memcpy (buf + 8, msg, len);
-		// calculate first hash
-		MD5((uint8_t *)buf, len + 64, (uint8_t *)(hash + 8)); // 16 bytes
-
-		// calculate digest
-		MD5((uint8_t *)hash, 96, digest);
-	}
-
 // AES
 #ifdef __AES__
 	#define KeyExpansion256(round0,round1) \

libi2pd/Crypto.h

@@ -62,24 +62,6 @@ namespace crypto
 	// RSA
 	const BIGNUM * GetRSAE ();
 
-	// DH
-	class DHKeys
-	{
-		public:
-
-			DHKeys ();
-			~DHKeys ();
-
-			void GenerateKeys ();
-			const uint8_t * GetPublicKey () const { return m_PublicKey; };
-			void Agree (const uint8_t * pub, uint8_t * shared);
-
-		private:
-
-			DH * m_DH;
-			uint8_t m_PublicKey[256];
-	};
-
 	// x25519
 	class X25519Keys
 	{
@@ -121,10 +103,6 @@ namespace crypto
 	bool ECIESDecrypt (const EC_GROUP * curve, const BIGNUM * key, const uint8_t * encrypted, uint8_t * data); // 514 bytes encrypted, 222 data
 	void GenerateECIESKeyPair (const EC_GROUP * curve, BIGNUM *& priv, EC_POINT *& pub);
 
-	// HMAC
-	typedef i2p::data::Tag<32> MACKey;
-	void HMACMD5Digest (uint8_t * msg, size_t len, const MACKey& key, uint8_t * digest);
-
 	// AES
 	struct ChipherBlock
 	{

libi2pd/NTCP2.cpp

@@ -309,7 +309,7 @@ namespace transport
 
 		KDF3Bob ();
 		if (i2p::crypto::AEADChaCha20Poly1305 (m_SessionConfirmedBuffer + 48, m3p2Len - 16, GetH (), 32, GetK (), nonce, m3p2Buf, m3p2Len - 16, false)) // decrypt
-			// caclulate new h again for KDF data
+			// calculate new h again for KDF data
 			MixHash (m_SessionConfirmedBuffer + 48, m3p2Len); // h = SHA256(h || ciphertext)
 		else
 		{

libi2pd/NetDb.cpp

@@ -628,8 +628,8 @@ namespace data
 				(it.second->IsFloodfill () && totalFloodfills - deletedFloodfillsCount < NETDB_MIN_FLOODFILLS)))
 				it.second->SetUnreachable (false);
 			// find & mark expired routers
-			if (!it.second->IsReachable () && (it.second->GetCompatibleTransports (true) & (RouterInfo::eSSUV4 | RouterInfo::eSSU2V4)))
+			if (!it.second->IsReachable () && (it.second->GetCompatibleTransports (true) & RouterInfo::eSSU2V4))
-			// non-reachable router, but reachable by ipv4 SSU or SSU2 means introducers
+			// non-reachable router, but reachable by ipv4  SSU2 means introducers
 			{
 				if (ts > it.second->GetTimestamp () + NETDB_INTRODUCEE_EXPIRATION_TIMEOUT*1000LL)
 				// RouterInfo expires after 1 hour if uses introducer
@@ -649,7 +649,8 @@ namespace data
 		} // m_RouterInfos iteration
 
 		m_RouterInfoBuffersPool.CleanUpMt ();
-
+		m_RouterInfoAddressesPool.CleanUpMt ();
+			
 		if (updatedCount > 0)
 			LogPrint (eLogInfo, "NetDb: Saved ", updatedCount, " new/updated routers");
 		if (deletedCount > 0)
@@ -1209,16 +1210,6 @@ namespace data
 			});
 	}
 
-	std::shared_ptr<const RouterInfo> NetDb::GetRandomPeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const
-	{
-		return GetRandomRouter (
-			[v4, &excluded](std::shared_ptr<const RouterInfo> router)->bool
-			{
-				return !router->IsHidden () && router->IsECIES () &&
-					router->IsPeerTesting (v4) && !excluded.count (router->GetIdentHash ());
-			});
-	}
-
 	std::shared_ptr<const RouterInfo> NetDb::GetRandomSSU2PeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const
 	{
 		return GetRandomRouter (
@@ -1229,25 +1220,6 @@ namespace data
 			});
 	}
 
-	std::shared_ptr<const RouterInfo> NetDb::GetRandomSSUV6Router () const
-	{
-		return GetRandomRouter (
-			[](std::shared_ptr<const RouterInfo> router)->bool
-			{
-				return !router->IsHidden () && router->IsECIES () && router->IsSSUV6 ();
-			});
-	}
-
-	std::shared_ptr<const RouterInfo> NetDb::GetRandomIntroducer (bool v4, const std::set<IdentHash>& excluded) const
-	{
-		return GetRandomRouter (
-			[v4, &excluded](std::shared_ptr<const RouterInfo> router)->bool
-			{
-				return !router->IsHidden () && router->IsECIES () && !router->IsFloodfill () && // floodfills don't send relay tag
-					router->IsIntroducer (v4) && !excluded.count (router->GetIdentHash ());
-			});
-	}
-
 	std::shared_ptr<const RouterInfo> NetDb::GetRandomSSU2Introducer (bool v4, const std::set<IdentHash>& excluded) const
 	{
 		return GetRandomRouter (

libi2pd/NetDb.hpp

@@ -89,10 +89,7 @@ namespace data
 			std::shared_ptr<const RouterInfo> GetRandomRouter () const;
 			std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
 			std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
-			std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const;
 			std::shared_ptr<const RouterInfo> GetRandomSSU2PeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const;
-			std::shared_ptr<const RouterInfo> GetRandomSSUV6Router () const; // TODO: change to v6 peer test later
-			std::shared_ptr<const RouterInfo> GetRandomIntroducer (bool v4, const std::set<IdentHash>& excluded) const;
 			std::shared_ptr<const RouterInfo> GetRandomSSU2Introducer (bool v4, const std::set<IdentHash>& excluded) const;
 			std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
 			std::vector<IdentHash> GetClosestFloodfills (const IdentHash& destination, size_t num,
@@ -126,6 +123,7 @@ namespace data
 			void ClearRouterInfos () { m_RouterInfos.clear (); };
 			std::shared_ptr<RouterInfo::Buffer> NewRouterInfoBuffer () { return m_RouterInfoBuffersPool.AcquireSharedMt (); };
 			void PopulateRouterInfoBuffer (std::shared_ptr<RouterInfo> r);
+			std::shared_ptr<RouterInfo::Address> NewRouterInfoAddress () { return m_RouterInfoAddressesPool.AcquireSharedMt (); };
 			std::shared_ptr<Lease> NewLease (const Lease& lease) { return m_LeasesPool.AcquireSharedMt (lease); };
 
 			uint32_t GetPublishReplyToken () const { return m_PublishReplyToken; };
@@ -183,6 +181,7 @@ namespace data
 			uint32_t m_PublishReplyToken = 0;
 
 			i2p::util::MemoryPoolMt<RouterInfo::Buffer> m_RouterInfoBuffersPool;
+			i2p::util::MemoryPoolMt<RouterInfo::Address> m_RouterInfoAddressesPool;
 			i2p::util::MemoryPoolMt<Lease> m_LeasesPool;
 	};
 

libi2pd/RouterContext.cpp

@@ -63,7 +63,6 @@ namespace i2p
 		if (!port) port = SelectRandomPort ();
 		bool ipv4;  i2p::config::GetOption("ipv4", ipv4);
 		bool ipv6;  i2p::config::GetOption("ipv6", ipv6);
-		bool ssu;   i2p::config::GetOption("ssu", ssu);
 		bool ntcp2; i2p::config::GetOption("ntcp2.enabled", ntcp2);
 		bool ssu2;  i2p::config::GetOption("ssu2.enabled", ssu2);
 		bool ygg;   i2p::config::GetOption("meshnets.yggdrasil", ygg);
@@ -109,17 +108,12 @@ namespace i2p
 					routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv);
 				}
 			}
-			if (ssu)
-			{
-				routerInfo.AddSSUAddress (host.c_str(), port, nullptr);
-				caps |= i2p::data::RouterInfo::eReachable; // R
-			}
 			if (ssu2)
 			{
 				if (ssu2Published)
 				{
 					uint16_t ssu2Port; i2p::config::GetOption ("ssu2.port", ssu2Port);
-					if (!ssu2Port) ssu2Port = ssu ? (port + 1) : port;
+					if (!ssu2Port) ssu2Port = port;
 					routerInfo.AddSSU2Address (m_SSU2Keys->staticPublicKey, m_SSU2Keys->intro, boost::asio::ip::address_v4::from_string (host), ssu2Port);
 				}
 				else
@@ -158,17 +152,12 @@ namespace i2p
 					addressCaps |= i2p::data::RouterInfo::AddressCaps::eV6;
 				}
 			}
-			if (ssu)
-			{
-				routerInfo.AddSSUAddress (host.c_str(), port, nullptr);
-				caps |= i2p::data::RouterInfo::eReachable; // R
-			}
 			if (ssu2)
 			{
 				if (ssu2Published)
 				{
 					uint16_t ssu2Port; i2p::config::GetOption ("ssu2.port", ssu2Port);
-					if (!ssu2Port) ssu2Port = ssu ? (port + 1) : port;
+					if (!ssu2Port) ssu2Port = port;
 					routerInfo.AddSSU2Address (m_SSU2Keys->staticPublicKey, m_SSU2Keys->intro, boost::asio::ip::address_v6::from_string (host), ssu2Port);
 				}
 				else
@@ -236,13 +225,6 @@ namespace i2p
 		fk.write ((char *)m_SSU2Keys.get (), sizeof (SSU2PrivateKeys));
 	}
 
-	bool RouterContext::IsSSU2Only () const
-	{
-		auto transports = m_RouterInfo.GetCompatibleTransports (false);
-		return (transports & (i2p::data::RouterInfo::eSSU2V4 | i2p::data::RouterInfo::eSSU2V6)) &&
-			!(transports & (i2p::data::RouterInfo::eSSUV4 | i2p::data::RouterInfo::eSSUV6));
-	}
-
 	void RouterContext::SetStatus (RouterStatus status)
 	{
 		if (status != m_Status)
@@ -262,13 +244,7 @@ namespace i2p
 			}
 		}
 	}
-
+		
-	void RouterContext::SetStatusSSU2 (RouterStatus status)
-	{
-		if (IsSSU2Only ())
-			SetStatus (status);
-	}
-
 	void RouterContext::SetStatusV6 (RouterStatus status)
 	{
 		if (status != m_StatusV6)
@@ -288,19 +264,13 @@ namespace i2p
 			}
 		}
 	}
-
+		
-	void RouterContext::SetStatusV6SSU2 (RouterStatus status)
-	{
-		if (IsSSU2Only ())
-			SetStatusV6 (status);
-	}
-
 	void RouterContext::UpdatePort (int port)
 	{
 		bool updated = false;
 		for (auto& address : m_RouterInfo.GetAddresses ())
 		{
-			if (address->port != port && (address->transportStyle == i2p::data::RouterInfo::eTransportSSU || IsSSU2Only ()))
+			if (address->port != port && address->transportStyle == i2p::data::RouterInfo::eTransportSSU2)
 			{
 				address->port = port;
 				updated = true;
@@ -476,8 +446,6 @@ namespace i2p
 						mtu = maxMTU;
 						LogPrint(eLogWarning, "Router: MTU dropped to upper limit of ", maxMTU, " bytes");
 					}
-					if (mtu && !address->IsSSU2 ()) // SSU1
-						mtu = (mtu >> 4) << 4; // round to multiple of 16
 					address->ssu->mtu = mtu;
 					updated = true;
 				}
@@ -488,23 +456,8 @@ namespace i2p
 			UpdateRouterInfo ();
 	}
 
-	bool RouterContext::AddIntroducer (const i2p::data::RouterInfo::Introducer& introducer)
-	{
-		bool ret = m_RouterInfo.AddIntroducer (introducer);
-		if (ret)
-			UpdateRouterInfo ();
-		return ret;
-	}
-
-	void RouterContext::RemoveIntroducer (const boost::asio::ip::udp::endpoint& e)
-	{
-		if (m_RouterInfo.RemoveIntroducer (e))
-			UpdateRouterInfo ();
-	}
-
 	bool RouterContext::AddSSU2Introducer (const i2p::data::RouterInfo::Introducer& introducer, bool v4)
 	{
-		if (!IsSSU2Only ()) return false;
 		bool ret = m_RouterInfo.AddSSU2Introducer (introducer, v4);
 		if (ret)
 			UpdateRouterInfo ();
@@ -513,7 +466,6 @@ namespace i2p
 
 	void RouterContext::RemoveSSU2Introducer (const i2p::data::IdentHash& h, bool v4)
 	{
-		if (!IsSSU2Only ()) return;
 		if (m_RouterInfo.RemoveSSU2Introducer (h, v4))
 			UpdateRouterInfo ();
 	}
@@ -631,50 +583,6 @@ namespace i2p
 		return m_RouterInfo.GetCaps () & i2p::data::RouterInfo::eUnreachable;
 	}
 
-	void RouterContext::RemoveNTCPAddress (bool v4only)
-	{
-		bool updated = false;
-		auto& addresses = m_RouterInfo.GetAddresses ();
-		for (auto it = addresses.begin (); it != addresses.end ();)
-		{
-			if ((*it)->transportStyle == i2p::data::RouterInfo::eTransportNTCP && !(*it)->IsNTCP2 () &&
-				(!v4only || (*it)->host.is_v4 ()))
-			{
-				it = addresses.erase (it);
-				updated = true;
-				if (v4only) break; // otherwise might be more than one address
-			}
-			else
-				++it;
-		}
-		if (updated)
-			m_RouterInfo.UpdateSupportedTransports ();
-	}
-
-	void RouterContext::RemoveSSUAddress ()
-	{
-		bool updated = false;
-		auto& addresses = m_RouterInfo.GetAddresses ();
-		for (auto it = addresses.begin (); it != addresses.end ();)
-		{
-			if ((*it)->transportStyle == i2p::data::RouterInfo::eTransportSSU)
-			{
-				it = addresses.erase (it);
-				updated = true;
-			}
-			else
-				++it;
-		}
-		if (updated)
-			m_RouterInfo.UpdateSupportedTransports ();
-	}
-
-	void RouterContext::SetUnreachableSSU2 (bool v4, bool v6)
-	{
-		if (IsSSU2Only ())
-			SetUnreachable (v4, v6);
-	}
-
 	void RouterContext::SetUnreachable (bool v4, bool v6)
 	{
 		if (v4 || (v6 && !SupportsV4 ()))
@@ -691,8 +599,7 @@ namespace i2p
 		// delete previous introducers
 		auto& addresses = m_RouterInfo.GetAddresses ();
 		for (auto& addr : addresses)
-			if (addr->ssu && (!addr->IsSSU2 () || IsSSU2Only ()) &&
+			if (addr->ssu && ((v4 && addr->IsV4 ()) || (v6 && addr->IsV6 ())))
-			    ((v4 && addr->IsV4 ()) || (v6 && addr->IsV6 ())))
 			{
 				addr->published = false;
 				addr->caps &= ~i2p::data::RouterInfo::eSSUIntroducer; // can't be introducer
@@ -722,19 +629,15 @@ namespace i2p
 		}
 		uint16_t port = 0;
 		// delete previous introducers
-		bool isSSU2Published = IsSSU2Only (); // TODO
+		bool isSSU2Published; i2p::config::GetOption ("ssu2.published", isSSU2Published);
-		if (isSSU2Published)
-			i2p::config::GetOption ("ssu2.published", isSSU2Published);
 		auto& addresses = m_RouterInfo.GetAddresses ();
 		for (auto& addr : addresses)
-			if (addr->ssu && (!addr->IsSSU2 () || isSSU2Published) &&
+			if (addr->ssu && isSSU2Published && ((v4 && addr->IsV4 ()) || (v6 && addr->IsV6 ())))
-			    ((v4 && addr->IsV4 ()) || (v6 && addr->IsV6 ())))
 			{
 				addr->published = true;
 				addr->caps |= i2p::data::RouterInfo::eSSUIntroducer;
 				addr->ssu->introducers.clear ();
-				if (addr->port && (!addr->IsSSU2 () || IsSSU2Only ()))
+				if (addr->port) port = addr->port;
-					port = addr->port;
 			}
 		// publish NTCP2
 		bool ntcp2; i2p::config::GetOption("ntcp2.enabled", ntcp2);
@@ -758,7 +661,7 @@ namespace i2p
 		if (supportsV6)
 		{
 			// insert v6 addresses if necessary
-			bool foundSSU = false, foundNTCP2 = false, foundSSU2 = false;
+			bool foundNTCP2 = false, foundSSU2 = false;
 			uint16_t port = 0;
 			auto& addresses = m_RouterInfo.GetAddresses ();
 			for (auto& addr: addresses)
@@ -767,10 +670,7 @@ namespace i2p
 				{
 					switch (addr->transportStyle)
 					{
-						case i2p::data::RouterInfo::eTransportSSU:
+						case i2p::data::RouterInfo::eTransportNTCP2:
-							foundSSU = true;
-						break;
-						case i2p::data::RouterInfo::eTransportNTCP:
 							foundNTCP2 = true;
 						break;
 						case i2p::data::RouterInfo::eTransportSSU2:
@@ -786,13 +686,6 @@ namespace i2p
 				i2p::config::GetOption("port", port);
 				if (!port) port = SelectRandomPort ();
 			}
-			// SSU
-			bool ssu; i2p::config::GetOption("ssu", ssu);
-			if (!foundSSU && ssu)
-			{
-				std::string host = "::1"; // TODO: read host
-				m_RouterInfo.AddSSUAddress (host.c_str (), port, nullptr);
-			}
 			// NTCP2
 			if (!foundNTCP2)
 			{
@@ -825,7 +718,7 @@ namespace i2p
 					if (ssu2Published)
 					{
 						uint16_t ssu2Port; i2p::config::GetOption ("ssu2.port", ssu2Port);
-						if (!ssu2Port) ssu2Port = ssu ? (port + 1) : port;
+						if (!ssu2Port) ssu2Port = port;
 						m_RouterInfo.AddSSU2Address (m_SSU2Keys->staticPublicKey, m_SSU2Keys->intro, boost::asio::ip::address::from_string ("::1"), ssu2Port);
 					}
 					else
@@ -847,7 +740,7 @@ namespace i2p
 		// update
 		if (supportsV4)
 		{
-			bool foundSSU = false, foundNTCP2 = false, foundSSU2 = false;
+			bool foundNTCP2 = false, foundSSU2 = false;
 			std::string host = "127.0.0.1";
 			uint16_t port = 0;
 			auto& addresses = m_RouterInfo.GetAddresses ();
@@ -857,10 +750,7 @@ namespace i2p
 				{
 					switch (addr->transportStyle)
 					{
-						case i2p::data::RouterInfo::eTransportSSU:
+						case i2p::data::RouterInfo::eTransportNTCP2:
-							foundSSU = true;
-						break;
-						case i2p::data::RouterInfo::eTransportNTCP:
 							foundNTCP2 = true;
 						break;
 						case i2p::data::RouterInfo::eTransportSSU2:
@@ -876,11 +766,6 @@ namespace i2p
 				i2p::config::GetOption("port", port);
 				if (!port) port = SelectRandomPort ();
 			}
-			// SSU
-			bool ssu; i2p::config::GetOption("ssu", ssu);
-			if (!foundSSU && ssu)
-				m_RouterInfo.AddSSUAddress (host.c_str (), port, nullptr);
-
 			// NTCP2
 			if (!foundNTCP2)
 			{
@@ -908,7 +793,7 @@ namespace i2p
 					if (ssu2Published)
 					{
 						uint16_t ssu2Port; i2p::config::GetOption ("ssu2.port", ssu2Port);
-						if (!ssu2Port) ssu2Port = ssu ? (port + 1) : port;
+						if (!ssu2Port) ssu2Port = port;
 						m_RouterInfo.AddSSU2Address (m_SSU2Keys->staticPublicKey, m_SSU2Keys->intro, boost::asio::ip::address::from_string ("127.0.0.1"), ssu2Port);
 					}
 					else
@@ -956,32 +841,9 @@ namespace i2p
 		for (auto& addr: addresses)
 		{
 			if (addr->ssu && ((v4 && addr->IsV4 ()) || (!v4 && addr->IsV6 ())))
-			{
+			{	
-				if (!addr->IsSSU2 ()) // SSU1
+				addr->ssu->mtu = mtu;
-				{
+				LogPrint (eLogDebug, "Router: MTU for ", v4 ? "ipv4" : "ipv6", " address ", addr->host.to_string(), " is set to ", mtu);
-					// round to multiple of 16
-					if (v4)
-					{
-						if (mtu > 1484) mtu = 1484;
-						else
-						{
-							mtu -= 12;
-							mtu = (mtu >> 4) << 4;
-							mtu += 12;
-						}
-					}
-					else
-					{
-						if (mtu > 1488) mtu = 1488;
-						else
-							mtu = (mtu >> 4) << 4;
-					}
-				}
-				if (mtu)
-				{
-					addr->ssu->mtu = mtu;
-					LogPrint (eLogDebug, "Router: MTU for ", v4 ? "ipv4" : "ipv6", " address ", addr->host.to_string(), " is set to ", mtu);
-				}
 			}
 		}
 	}

libi2pd/RouterContext.h

@@ -102,12 +102,10 @@ namespace garlic
 			uint64_t GetTransitBandwidthLimit () const { return (m_BandwidthLimit*m_ShareRatio)/100LL; };
 			RouterStatus GetStatus () const { return m_Status; };
 			void SetStatus (RouterStatus status);
-			void SetStatusSSU2 (RouterStatus status);
 			RouterError GetError () const { return m_Error; };
 			void SetError (RouterError error) { m_Error = error; };
 			RouterStatus GetStatusV6 () const { return m_StatusV6; };
 			void SetStatusV6 (RouterStatus status);
-			void SetStatusV6SSU2 (RouterStatus status);
 			RouterError GetErrorV6 () const { return m_ErrorV6; };
 			void SetErrorV6 (RouterError error) { m_ErrorV6 = error; };
 			int GetNetID () const { return m_NetID; };
@@ -121,16 +119,11 @@ namespace garlic
 			void UpdateNTCP2Address (bool enable);
 			void PublishSSU2Address (int port, bool publish, bool v4, bool v6);
 			void UpdateSSU2Address (bool enable);
-			void RemoveNTCPAddress (bool v4only = true); // delete NTCP address for older routers. TODO: remove later
-			void RemoveSSUAddress (); // delete SSU address for older routers
-			bool AddIntroducer (const i2p::data::RouterInfo::Introducer& introducer);
-			void RemoveIntroducer (const boost::asio::ip::udp::endpoint& e);
 			bool AddSSU2Introducer (const i2p::data::RouterInfo::Introducer& introducer, bool v4);
 			void RemoveSSU2Introducer (const i2p::data::IdentHash& h, bool v4);
 			void ClearSSU2Introducers (bool v4);
 			bool IsUnreachable () const;
 			void SetUnreachable (bool v4, bool v6);
-			void SetUnreachableSSU2 (bool v4, bool v6);
 			void SetReachable (bool v4, bool v6);
 			bool IsFloodfill () const { return m_IsFloodfill; };
 			void SetFloodfill (bool floodfill);

libi2pd/RouterInfo.cpp

@@ -206,26 +206,24 @@ namespace data
 		s.read ((char *)&m_Timestamp, sizeof (m_Timestamp));
 		m_Timestamp = be64toh (m_Timestamp);
 		// read addresses
-		auto addresses = boost::make_shared<Addresses>();
+		if (!m_NewAddresses) m_NewAddresses = boost::make_shared<Addresses>();
 		uint8_t numAddresses;
 		s.read ((char *)&numAddresses, sizeof (numAddresses));
-		addresses->reserve (numAddresses);
 		for (int i = 0; i < numAddresses; i++)
 		{
 			uint8_t supportedTransports = 0;
-			auto address = std::make_shared<Address> ();
+			auto address = netdb.NewRouterInfoAddress ();
 			uint8_t cost; // ignore
 			s.read ((char *)&cost, sizeof (cost));
 			s.read ((char *)&address->date, sizeof (address->date));
-			bool isHost = false, isIntroKey = false, isStaticKey = false, isV2 = false;
+			bool isHost = false, isStaticKey = false, isV2 = false;
-			Tag<32> iV2; // for 'i' field in SSU, TODO: remove later
 			char transportStyle[6];
 			ReadString (transportStyle, 6, s);
 			if (!strncmp (transportStyle, "NTCP", 4)) // NTCP or NTCP2
-				address->transportStyle = eTransportNTCP;
+				address->transportStyle = eTransportNTCP2;
 			else if (!strncmp (transportStyle, "SSU", 3)) // SSU or SSU2
 			{
-				address->transportStyle = (transportStyle[3] == '2') ? eTransportSSU2 : eTransportSSU;
+				address->transportStyle = eTransportSSU2;
 				address->ssu.reset (new SSUExt ());
 				address->ssu->mtu = 0;
 			}
@@ -283,13 +281,6 @@ namespace data
 					else
 						LogPrint (eLogWarning, "RouterInfo: Unexpected field 'mtu' for NTCP2");
 				}
-				else if (!strcmp (key, "key"))
-				{
-					if (address->ssu)
-						isIntroKey = (Base64ToByteStream (value, strlen (value), address->i, 32) == 32);
-					else
-						LogPrint (eLogWarning, "RouterInfo: Unexpected field 'key' for NTCP2");
-				}
 				else if (!strcmp (key, "caps"))
 					address->caps = ExtractAddressCaps (value);
 				else if (!strcmp (key, "s")) // ntcp2 or ssu2 static key
@@ -306,8 +297,6 @@ namespace data
 					}
 					else if (address->IsSSU2 ())
 						Base64ToByteStream (value, strlen (value), address->i, 32);
-					else
-						Base64ToByteStream (value, strlen (value), iV2, 32);
 				}
 				else if (!strcmp (key, "v"))
 				{
@@ -340,21 +329,9 @@ namespace data
 					}
 					Introducer& introducer = address->ssu->introducers.at (index);
 					if (!strcmp (key, "ihost"))
-					{
+						introducer.isH = false; // SSU1 
-						boost::system::error_code ecode;
-						introducer.iHost = boost::asio::ip::address::from_string (value, ecode);
-					}
 					else if (!strcmp (key, "iport"))
-					{
+						introducer.isH = false; // SSU1 
-						try
-						{
-							introducer.iPort = boost::lexical_cast<int>(value);
-						}
-						catch (std::exception& ex)
-						{
-							LogPrint (eLogWarning, "RouterInfo: 'iport' exception ", ex.what ());
-						}
-					}
 					else if (!strcmp (key, "itag"))
 					{
 						try
@@ -366,8 +343,11 @@ namespace data
 							LogPrint (eLogWarning, "RouterInfo: 'itag' exception ", ex.what ());
 						}
 					}
-					else if (!strcmp (key, "ikey") || !strcmp (key, "ih"))
+					else if (!strcmp (key, "ih"))
-						Base64ToByteStream (value, strlen (value), introducer.iKey, 32);
+					{	
+						Base64ToByteStream (value, strlen (value), introducer.iH, 32);
+						introducer.isH = true; 
+					}	
 					else if (!strcmp (key, "iexp"))
 					{
 						try
@@ -382,7 +362,7 @@ namespace data
 				}
 				if (!s) return;
 			}
-			if (address->transportStyle == eTransportNTCP)
+			if (address->transportStyle == eTransportNTCP2)
 			{
 				if (isStaticKey)
 				{
@@ -406,49 +386,7 @@ namespace data
 					}
 				}
 			}
-			else if (address->transportStyle == eTransportSSU)
+			else if (address->transportStyle == eTransportSSU2 && isV2)
-			{
-				if (isIntroKey)
-				{
-					if (isHost)
-						supportedTransports |= address->host.is_v4 () ? eSSUV4 : eSSUV6;
-					else if (address->caps & AddressCaps::eV6)
-					{
-						supportedTransports |= eSSUV6;
-						if (address->caps & AddressCaps::eV4) supportedTransports |= eSSUV4; // in additional to v6
-					}
-					else
-						supportedTransports |= eSSUV4; // in case if host or 6 caps is not preasented, we assume 4
-					if (address->ssu && !address->ssu->introducers.empty ())
-					{
-						// exclude invalid introducers
-						uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-						int numValid = 0;
-						for (auto& it: address->ssu->introducers)
-						{
-							if (!it.iExp) it.iExp = m_Timestamp/1000 + NETDB_INTRODUCEE_EXPIRATION_TIMEOUT;
-							if (ts <= it.iExp && it.iPort > 0 &&
-								((it.iHost.is_v4 () && address->IsV4 ()) || (it.iHost.is_v6 () && address->IsV6 ())))
-								numValid++;
-							else
-							{
-								it.iPort = 0;
-								if (isV2) numValid++;
-							}
-						}
-						if (numValid)
-							m_ReachableTransports |= supportedTransports;
-						else
-							address->ssu->introducers.resize (0);
-					}
-					else if (isHost && address->port)
-					{
-						address->published = true;
-						m_ReachableTransports |= supportedTransports;
-					}
-				}
-			}
-			if (address->transportStyle == eTransportSSU2 || (isV2 && address->transportStyle == eTransportSSU))
 			{
 				if (address->IsV4 ()) supportedTransports |= eSSU2V4;
 				if (address->IsV6 ()) supportedTransports |= eSSU2V6;
@@ -456,62 +394,42 @@ namespace data
 				{
 					if (address->host.is_v4 ()) m_ReachableTransports |= eSSU2V4;
 					if (address->host.is_v6 ()) m_ReachableTransports |= eSSU2V6;
+					address->published = true;
 				}
-				if (address->transportStyle == eTransportSSU2)
+				if (address->ssu && !address->ssu->introducers.empty ())
-				{
-					if (address->port) address->published = true;
-					if (address->ssu && !address->ssu->introducers.empty ())
-					{
-						// exclude invalid introducers
-						uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-						int numValid = 0;
-						for (auto& it: address->ssu->introducers)
-						{
-							if (it.iTag && ts <= it.iExp)
-								numValid++;
-							else
-								it.iTag = 0;
-						}
-						if (numValid)
-							m_ReachableTransports |= supportedTransports;
-						else
-							address->ssu->introducers.resize (0);
-					}
-				}
-				else
 				{
-					// create additional SSU2 address. TODO: remove later
+					// exclude invalid introducers
-					auto ssu2addr = std::make_shared<Address> ();
-					ssu2addr->transportStyle = eTransportSSU2;
-					ssu2addr->host = address->host; ssu2addr->port = address->port;
-					ssu2addr->s = address->s; ssu2addr->i = iV2;
-					ssu2addr->date = address->date; ssu2addr->caps = address->caps;
-					ssu2addr->published = address->published;
-					ssu2addr->ssu.reset (new SSUExt ()); ssu2addr->ssu->mtu = address->ssu->mtu;
 					uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-					if (!address->ssu->introducers.empty ())
+					int numValid = 0;
+					for (auto& it: address->ssu->introducers)
 					{
-						for (const auto& introducer: address->ssu->introducers)
+						if (it.iTag && ts < it.iExp && it.isH)
-							if (!introducer.iPort && introducer.iHost.is_unspecified () && ts < introducer.iExp) // SSU2
+							numValid++;
-								ssu2addr->ssu->introducers.push_back (introducer);
+						else
-						if (!ssu2addr->ssu->introducers.empty ())
+							it.iTag = 0;
-							m_ReachableTransports |= supportedTransports;
 					}
-					addresses->push_back(ssu2addr);
+					if (numValid)
+						m_ReachableTransports |= supportedTransports;
+					else
+						address->ssu->introducers.resize (0);
 				}
 			}
 			if (supportedTransports)
 			{
 				if (!(m_SupportedTransports & supportedTransports)) // avoid duplicates
-					addresses->push_back(address);
+					m_NewAddresses->push_back(address);
 				m_SupportedTransports |= supportedTransports;
 			}
 		}
+		// update addresses
+		auto prev = m_Addresses;
 #if (BOOST_VERSION >= 105300)
-		boost::atomic_store (&m_Addresses, addresses);
+		boost::atomic_store (&m_Addresses, m_NewAddresses);
 #else
-		m_Addresses = addresses; // race condition
+		m_Addresses = m_NewAddresses; // race condition
 #endif
+		if (prev) prev->clear ();
+		m_NewAddresses = prev;
 		// read peers
 		uint8_t numPeers;
 		s.read ((char *)&numPeers, sizeof (numPeers)); if (!s) return;
@@ -635,10 +553,10 @@ namespace data
 				case CAPS_FLAG_V6:
 					caps |= AddressCaps::eV6;
 				break;
-				case CAPS_FLAG_SSU_TESTING:
+				case CAPS_FLAG_SSU2_TESTING:
 					caps |= AddressCaps::eSSUTesting;
 				break;
-				case CAPS_FLAG_SSU_INTRODUCER:
+				case CAPS_FLAG_SSU2_INTRODUCER:
 					caps |= AddressCaps::eSSUIntroducer;
 				break;
 				default: ;
@@ -701,36 +619,13 @@ namespace data
 		return l+1;
 	}
 
-
-	void RouterInfo::AddSSUAddress (const char * host, int port, const uint8_t * key, int mtu)
-	{
-		auto addr = std::make_shared<Address>();
-		addr->host = boost::asio::ip::address::from_string (host);
-		addr->port = port;
-		addr->transportStyle = eTransportSSU;
-		addr->published = true;
-		addr->caps = i2p::data::RouterInfo::eSSUTesting | i2p::data::RouterInfo::eSSUIntroducer; // BC;
-		addr->date = 0;
-		addr->ssu.reset (new SSUExt ());
-		addr->ssu->mtu = mtu;
-		if (key)
-			memcpy (addr->i, key, 32);
-		else
-			RAND_bytes (addr->i, 32);
-		for (const auto& it: *m_Addresses) // don't insert same address twice
-			if (*it == *addr) return;
-		m_SupportedTransports |= addr->host.is_v6 () ? eSSUV6 : eSSUV4;
-		m_ReachableTransports |= addr->host.is_v6 () ? eSSUV6 : eSSUV4;
-		m_Addresses->push_back(std::move(addr));
-	}
-
 	void RouterInfo::AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv,
 		const boost::asio::ip::address& host, int port, uint8_t caps)
 	{
 		auto addr = std::make_shared<Address>();
 		addr->host = host;
 		addr->port = port;
-		addr->transportStyle = eTransportNTCP;
+		addr->transportStyle = eTransportNTCP2;
 		addr->caps = caps;
 		addr->date = 0;
 		if (port) addr->published = true;
@@ -792,51 +687,6 @@ namespace data
 		m_Addresses->push_back(std::move(addr));
 	}
 
-	bool RouterInfo::AddIntroducer (const Introducer& introducer)
-	{
-		for (auto& addr : *m_Addresses)
-		{
-			if (addr->transportStyle == eTransportSSU &&
-				((addr->IsV4 () && introducer.iHost.is_v4 ()) || (addr->IsV6 () && introducer.iHost.is_v6 ())))
-			{
-				for (auto& intro: addr->ssu->introducers)
-					if (intro.iTag == introducer.iTag) return false; // already presented
-				addr->ssu->introducers.push_back (introducer);
-				m_ReachableTransports |= (addr->IsV4 () ? eSSUV4 : eSSUV6);
-				return true;
-			}
-		}
-		return false;
-	}
-
-	bool RouterInfo::RemoveIntroducer (const boost::asio::ip::udp::endpoint& e)
-	{
-		for (auto& addr: *m_Addresses)
-		{
-			if (addr->transportStyle == eTransportSSU &&
-				((addr->IsV4 () && e.address ().is_v4 ()) || (addr->IsV6 () && e.address ().is_v6 ())))
-			{
-				for (auto it = addr->ssu->introducers.begin (); it != addr->ssu->introducers.end (); ++it)
-					if (boost::asio::ip::udp::endpoint (it->iHost, it->iPort) == e)
-					{
-						addr->ssu->introducers.erase (it);
-						if (addr->ssu->introducers.empty ())
-							m_ReachableTransports &= ~(addr->IsV4 () ? eSSUV4 : eSSUV6);
-						return true;
-					}
-			}
-		}
-		return false;
-	}
-
-	bool RouterInfo::IsSSU (bool v4only) const
-	{
-		if (v4only)
-			return m_SupportedTransports & eSSUV4;
-		else
-			return m_SupportedTransports & (eSSUV4 | eSSUV6);
-	}
-
 	bool RouterInfo::IsNTCP2 (bool v4only) const
 	{
 		if (v4only)
@@ -943,24 +793,6 @@ namespace data
 		}
 	}
 
-	std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSUAddress (bool v4only) const
-	{
-		return GetAddress (
-			[v4only](std::shared_ptr<const RouterInfo::Address> address)->bool
-			{
-				return (address->transportStyle == eTransportSSU) && (!v4only || address->IsV4 ());
-			});
-	}
-
-	std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSUV6Address () const
-	{
-		return GetAddress (
-			[](std::shared_ptr<const RouterInfo::Address> address)->bool
-			{
-				return (address->transportStyle == eTransportSSU) && address->IsV6();
-			});
-	}
-
 	std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSU2V4Address () const
 	{
 		return GetAddress (
@@ -1075,21 +907,10 @@ namespace data
 	bool RouterInfo::IsEligibleFloodfill () const
 	{
 		// floodfill must be reachable by ipv4, >= 0.9.38 and not DSA
-		return IsReachableBy (eNTCP2V4 | eSSUV4) && m_Version >= NETDB_MIN_FLOODFILL_VERSION &&
+		return IsReachableBy (eNTCP2V4 | eSSU2V4) && m_Version >= NETDB_MIN_FLOODFILL_VERSION &&
 			GetIdentity ()->GetSigningKeyType () != SIGNING_KEY_TYPE_DSA_SHA1;
 	}
 
-	bool RouterInfo::IsPeerTesting (bool v4) const
-	{
-		if (!(m_SupportedTransports & (v4 ? eSSUV4 : eSSUV6))) return false;
-		return (bool)GetAddress (
-			[v4](std::shared_ptr<const RouterInfo::Address> address)->bool
-			{
-				return (address->transportStyle == eTransportSSU) && address->IsPeerTesting () &&
-					((v4 && address->IsV4 ()) || (!v4 && address->IsV6 ())) && address->IsReachableSSU ();
-			});
-	}
-
 	bool RouterInfo::IsSSU2PeerTesting (bool v4) const
 	{
 		if (!(m_SupportedTransports & (v4 ? eSSU2V4 : eSSU2V6))) return false;
@@ -1101,17 +922,6 @@ namespace data
 			});
 	}
 
-	bool RouterInfo::IsIntroducer (bool v4) const
-	{
-		if (!(m_SupportedTransports & (v4 ? eSSUV4 : eSSUV6))) return false;
-		return (bool)GetAddress (
-			[v4](std::shared_ptr<const RouterInfo::Address> address)->bool
-			{
-				return (address->transportStyle == eTransportSSU) && address->IsIntroducer () &&
-					((v4 && address->IsV4 ()) || (!v4 && address->IsV6 ())) && !address->host.is_unspecified ();
-			});
-	}
-
 	bool RouterInfo::IsSSU2Introducer (bool v4) const
 	{
 		if (!(m_SupportedTransports & (v4 ? eSSU2V4 : eSSU2V6))) return false;
@@ -1127,8 +937,7 @@ namespace data
 	{
 		for (auto& addr: *m_Addresses)
 		{
-			// TODO: implement SSU
+			if (!addr->published && (addr->transportStyle == eTransportNTCP2 || addr->transportStyle == eTransportSSU2))
-			if (!addr->published && (addr->transportStyle == eTransportNTCP || addr->transportStyle == eTransportSSU2))
 			{
 				addr->caps &= ~(eV4 | eV6);
 				addr->caps |= transports;
@@ -1145,19 +954,13 @@ namespace data
 			uint8_t transports = 0;
 			switch (addr->transportStyle)
 			{
-				case eTransportNTCP:
+				case eTransportNTCP2:
 					if (addr->IsV4 ()) transports |= eNTCP2V4;
 					if (addr->IsV6 ())
 						transports |= (i2p::util::net::IsYggdrasilAddress (addr->host) ? eNTCP2V6Mesh : eNTCP2V6);
 					if (addr->IsPublishedNTCP2 ())
 						m_ReachableTransports |= transports;
 				break;
-				case eTransportSSU:
-					if (addr->IsV4 ()) transports |= eSSUV4;
-					if (addr->IsV6 ()) transports |= eSSUV6;
-					if (addr->IsReachableSSU ())
-						m_ReachableTransports |= transports;
-				break;
 				case eTransportSSU2:
 					if (addr->IsV4 ()) transports |= eSSU2V4;
 					if (addr->IsV6 ()) transports |= eSSU2V6;
@@ -1257,17 +1060,17 @@ namespace data
 			const Address& address = *addr_ptr;
 			// calculate cost
 			uint8_t cost = 0x7f;
-			if (address.transportStyle == eTransportNTCP)
+			if (address.transportStyle == eTransportNTCP2)
 				cost = address.published ? COST_NTCP2_PUBLISHED : COST_NTCP2_NON_PUBLISHED;
-			else if (address.transportStyle == eTransportSSU)
-				cost = address.published ? COST_SSU_DIRECT : COST_SSU_THROUGH_INTRODUCERS;
 			else if (address.transportStyle == eTransportSSU2)
 				cost = address.published ? COST_SSU2_DIRECT : COST_SSU2_NON_PUBLISHED;
+			else
+				continue; // skip unknown address
 			s.write ((const char *)&cost, sizeof (cost));
 			s.write ((const char *)&address.date, sizeof (address.date));
 			std::stringstream properties;
 			bool isPublished = false;
-			if (address.transportStyle == eTransportNTCP)
+			if (address.transportStyle == eTransportNTCP2)
 			{
 				if (address.IsNTCP2 ())
 				{
@@ -1289,43 +1092,6 @@ namespace data
 				else
 					continue; // don't write NTCP address
 			}
-			else if (address.transportStyle == eTransportSSU)
-			{
-				WriteString ("SSU", s);
-				// caps
-				WriteString ("caps", properties);
-				properties << '=';
-				std::string caps;
-				if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU_TESTING;
-				if (address.host.is_v4 ())
-				{
-					if (address.published)
-					{
-						isPublished = true;
-						if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU_INTRODUCER;
-					}
-					else
-						caps += CAPS_FLAG_V4;
-				}
-				else if (address.host.is_v6 ())
-				{
-					if (address.published)
-					{
-						isPublished = true;
-						if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU_INTRODUCER;
-					}
-					else
-						caps += CAPS_FLAG_V6;
-				}
-				else
-				{
-					if (address.IsV4 ()) caps += CAPS_FLAG_V4;
-					if (address.IsV6 ()) caps += CAPS_FLAG_V6;
-					if (caps.empty ()) caps += CAPS_FLAG_V4;
-				}
-				WriteString (caps, properties);
-				properties << ';';
-			}
 			else if (address.transportStyle == eTransportSSU2)
 			{
 				WriteString ("SSU2", s);
@@ -1334,8 +1100,8 @@ namespace data
 				if (address.published)
 				{
 					isPublished = true;
-					if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU_TESTING;
+					if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU2_TESTING;
-					if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU_INTRODUCER;
+					if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU2_INTRODUCER;
 				}
 				else
 				{
@@ -1368,7 +1134,7 @@ namespace data
 				size_t len = address.IsSSU2 () ? 32 : 16;
 				WriteString (address.i.ToBase64 (len), properties); properties << ';';
 			}
-			if (address.transportStyle == eTransportSSU || address.IsSSU2 ())
+			if (address.transportStyle == eTransportSSU2)
 			{
 				// write introducers if any
 				if (address.ssu && !address.ssu->introducers.empty())
@@ -1385,45 +1151,18 @@ namespace data
 						}
 						i++;
 					}
-					if (address.transportStyle == eTransportSSU)
-					{
-						i = 0;
-						for (const auto& introducer: address.ssu->introducers)
-						{
-							WriteString ("ihost" + boost::lexical_cast<std::string>(i), properties);
-							properties << '=';
-							WriteString (introducer.iHost.to_string (), properties);
-							properties << ';';
-							i++;
-						}
-					}
 					i = 0;
 					for (const auto& introducer: address.ssu->introducers)
 					{
-						if (address.IsSSU2 ())
+						WriteString ("ih" + boost::lexical_cast<std::string>(i), properties);	
-							WriteString ("ih" + boost::lexical_cast<std::string>(i), properties);
-						else
-							WriteString ("ikey" + boost::lexical_cast<std::string>(i), properties);
 						properties << '=';
 						char value[64];
-						size_t l = ByteStreamToBase64 (introducer.iKey, 32, value, 64);
+						size_t l = ByteStreamToBase64 (introducer.iH, 32, value, 64);
 						value[l] = 0;
 						WriteString (value, properties);
 						properties << ';';
 						i++;
 					}
-					if (address.transportStyle == eTransportSSU)
-					{
-						i = 0;
-						for (const auto& introducer: address.ssu->introducers)
-						{
-							WriteString ("iport" + boost::lexical_cast<std::string>(i), properties);
-							properties << '=';
-							WriteString (boost::lexical_cast<std::string>(introducer.iPort), properties);
-							properties << ';';
-							i++;
-						}
-					}
 					i = 0;
 					for (const auto& introducer: address.ssu->introducers)
 					{
@@ -1435,18 +1174,8 @@ namespace data
 					}
 				}
 			}
-			if (address.transportStyle == eTransportSSU)
+			
-			{
+			if (address.transportStyle == eTransportSSU2)
-				// write intro key
-				WriteString ("key", properties);
-				properties << '=';
-				char value[64];
-				size_t l = ByteStreamToBase64 (address.i, 32, value, 64);
-				value[l] = 0;
-				WriteString (value, properties);
-				properties << ';';
-			}
-			if (address.transportStyle == eTransportSSU || address.IsSSU2 ())
 			{
 				// write mtu
 				if (address.ssu && address.ssu->mtu)
@@ -1457,7 +1186,7 @@ namespace data
 					properties << ';';
 				}
 			}
-			if ((isPublished || (address.ssu && !address.IsSSU2 ())) && address.port)
+			if (isPublished && address.port)
 			{
 				WriteString ("port", properties);
 				properties << '=';
@@ -1549,7 +1278,7 @@ namespace data
 			if (addr->IsSSU2 () && ((v4 && addr->IsV4 ()) || (!v4 && addr->IsV6 ())))
 			{
 				for (auto it = addr->ssu->introducers.begin (); it != addr->ssu->introducers.end (); ++it)
-					if (h == it->iKey)
+					if (h == it->iH)
 					{
 						addr->ssu->introducers.erase (it);
 						if (addr->ssu->introducers.empty ())

libi2pd/RouterInfo.h

@@ -47,14 +47,12 @@ namespace data
 
 	const char CAPS_FLAG_V4 = '4';
 	const char CAPS_FLAG_V6 = '6';
-	const char CAPS_FLAG_SSU_TESTING = 'B';
+	const char CAPS_FLAG_SSU2_TESTING = 'B';
-	const char CAPS_FLAG_SSU_INTRODUCER = 'C';
+	const char CAPS_FLAG_SSU2_INTRODUCER = 'C';
 
 	const uint8_t COST_NTCP2_PUBLISHED = 3;
 	const uint8_t COST_NTCP2_NON_PUBLISHED = 14;
 	const uint8_t COST_SSU2_DIRECT = 8;
-	const uint8_t COST_SSU_DIRECT = 9;
-	const uint8_t COST_SSU_THROUGH_INTRODUCERS = 11;
 	const uint8_t COST_SSU2_NON_PUBLISHED = 15;
 
 	const size_t MAX_RI_BUFFER_SIZE = 3072; // if RouterInfo exceeds 3K we consider it as malformed, might extend later
@@ -66,11 +64,9 @@ namespace data
 			{
 				eNTCP2V4 = 0x01,
 				eNTCP2V6 = 0x02,
-				eSSUV4 = 0x04,
+				eSSU2V4 = 0x04,
-				eSSUV6 = 0x08,
+				eSSU2V6 = 0x08,
 				eNTCP2V6Mesh = 0x10,
-				eSSU2V4 = 0x20,
-				eSSU2V6 = 0x40,
 				eAllTransports = 0xFF
 			};
 			typedef uint8_t CompatibleTransports;
@@ -96,20 +92,17 @@ namespace data
 			enum TransportStyle
 			{
 				eTransportUnknown = 0,
-				eTransportNTCP,
+				eTransportNTCP2,
-				eTransportSSU,
 				eTransportSSU2
 			};
 
-			typedef Tag<32> IntroKey; // should be castable to MacKey and AESKey
 			struct Introducer
 			{
-				Introducer (): iPort (0), iExp (0) {};
+				Introducer (): iTag (0), iExp (0), isH (false) {};
-				boost::asio::ip::address iHost;
+				IdentHash iH;
-				int iPort;
-				IntroKey iKey; // or ih for SSU2
 				uint32_t iTag;
 				uint32_t iExp;
+				bool isH; // TODO: remove later
 			};
 
 			struct SSUExt
@@ -146,7 +139,7 @@ namespace data
 					return !(*this == other);
 				}
 
-				bool IsNTCP2 () const { return transportStyle == eTransportNTCP; };
+				bool IsNTCP2 () const { return transportStyle == eTransportNTCP2; };
 				bool IsSSU2 () const { return transportStyle == eTransportSSU2; };
 				bool IsPublishedNTCP2 () const { return IsNTCP2 () && published; };
 				bool IsReachableSSU () const { return (bool)ssu && (published || UsesIntroducer ()); };
@@ -188,34 +181,27 @@ namespace data
 			std::shared_ptr<const Address> GetSSU2AddressWithStaticKey (const uint8_t * key, bool isV6) const;
 			std::shared_ptr<const Address> GetPublishedNTCP2V4Address () const;
 			std::shared_ptr<const Address> GetPublishedNTCP2V6Address () const;
-			std::shared_ptr<const Address> GetSSUAddress (bool v4only = true) const;
-			std::shared_ptr<const Address> GetSSUV6Address () const;
 			std::shared_ptr<const Address> GetYggdrasilAddress () const;
 			std::shared_ptr<const Address> GetSSU2V4Address () const;
 			std::shared_ptr<const Address> GetSSU2V6Address () const;
 			std::shared_ptr<const Address> GetSSU2Address (bool v4) const;
 
-			void AddSSUAddress (const char * host, int port, const uint8_t * key, int mtu = 0);
 			void AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv,
 				const boost::asio::ip::address& host = boost::asio::ip::address(), int port = 0, uint8_t caps = 0);
 			void AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey, uint8_t caps = 0); // non published
 			void AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey,
 				const boost::asio::ip::address& host, int port); // published
-			bool AddIntroducer (const Introducer& introducer);
-			bool RemoveIntroducer (const boost::asio::ip::udp::endpoint& e);
 			void SetUnreachableAddressesTransportCaps (uint8_t transports); // bitmask of AddressCaps
 			void UpdateSupportedTransports ();
 			bool IsFloodfill () const { return m_Caps & Caps::eFloodfill; };
 			bool IsReachable () const { return m_Caps & Caps::eReachable; };
 			bool IsECIES () const { return m_RouterIdentity->GetCryptoKeyType () == i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD; };
-			bool IsSSU (bool v4only = true) const;
-			bool IsSSUV6 () const { return m_SupportedTransports & eSSUV6; };
 			bool IsNTCP2 (bool v4only = true) const;
 			bool IsNTCP2V6 () const { return m_SupportedTransports & eNTCP2V6; };
 			bool IsSSU2V4 () const { return m_SupportedTransports & eSSU2V4; };
 			bool IsSSU2V6 () const { return m_SupportedTransports & eSSU2V6; };
-			bool IsV6 () const { return m_SupportedTransports & (eSSUV6 | eNTCP2V6 | eSSU2V6); };
+			bool IsV6 () const { return m_SupportedTransports & (eNTCP2V6 | eSSU2V6); };
-			bool IsV4 () const { return m_SupportedTransports & (eSSUV4 | eNTCP2V4 | eSSU2V4); };
+			bool IsV4 () const { return m_SupportedTransports & (eNTCP2V4 | eSSU2V4); };
 			bool IsMesh () const { return m_SupportedTransports & eNTCP2V6Mesh; };
 			void EnableV6 ();
 			void DisableV6 ();
@@ -232,9 +218,7 @@ namespace data
 			bool IsHighBandwidth () const { return m_Caps & RouterInfo::eHighBandwidth; };
 			bool IsExtraBandwidth () const { return m_Caps & RouterInfo::eExtraBandwidth; };
 			bool IsEligibleFloodfill () const;
-			bool IsPeerTesting (bool v4) const;
 			bool IsSSU2PeerTesting (bool v4) const;
-			bool IsIntroducer (bool v4) const;
 			bool IsSSU2Introducer (bool v4) const;
 
 			uint8_t GetCaps () const { return m_Caps; };
@@ -298,7 +282,7 @@ namespace data
 			std::shared_ptr<Buffer> m_Buffer;
 			size_t m_BufferLen;
 			uint64_t m_Timestamp;
-			boost::shared_ptr<Addresses> m_Addresses; // TODO: use std::shared_ptr and std::atomic_store for gcc >= 4.9
+			boost::shared_ptr<Addresses> m_Addresses, m_NewAddresses; // TODO: use std::shared_ptr and std::atomic_store for gcc >= 4.9
 			bool m_IsUpdated, m_IsUnreachable;
 			CompatibleTransports m_SupportedTransports, m_ReachableTransports;
 			uint8_t m_Caps;
@@ -311,6 +295,7 @@ namespace data
 		public:
 
 			LocalRouterInfo () = default;
+			LocalRouterInfo (const std::string& fullPath): RouterInfo (fullPath) {};
 			void CreateBuffer (const PrivateKeys& privateKeys);
 			void UpdateCaps (uint8_t caps);
 

libi2pd/SSU.cpp

@@ -1,996 +0,0 @@
-/*
-* Copyright (c) 2013-2022, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#include <string.h>
-#include "Log.h"
-#include "Timestamp.h"
-#include "RouterContext.h"
-#include "NetDb.hpp"
-#include "Config.h"
-#include "util.h"
-#include "SSU.h"
-
-#if defined(__linux__) && !defined(_NETINET_IN_H)
-	#include <linux/in6.h>
-#endif
-
-#ifdef _WIN32
-#include <boost/winapi/error_codes.hpp>
-#endif
-
-namespace i2p
-{
-namespace transport
-{
-	SSUServer::SSUServer (int port):
-		m_IsRunning(false), m_Thread (nullptr),
-		m_ReceiversThread (nullptr), m_ReceiversThreadV6 (nullptr), m_Work (m_Service),
-		m_ReceiversWork (m_ReceiversService), m_ReceiversWorkV6 (m_ReceiversServiceV6),
-		m_Endpoint (boost::asio::ip::udp::v4 (), port), m_EndpointV6 (boost::asio::ip::udp::v6 (), port),
-		m_Socket (m_ReceiversService), m_SocketV6 (m_ReceiversServiceV6),
-		m_IntroducersUpdateTimer (m_Service), m_IntroducersUpdateTimerV6 (m_Service),
-		m_PeerTestsCleanupTimer (m_Service), m_TerminationTimer (m_Service), m_TerminationTimerV6 (m_Service),
-		m_IsSyncClockFromPeers (true)
-	{
-	}
-
-	SSUServer::~SSUServer ()
-	{
-	}
-
-	void SSUServer::OpenSocket ()
-	{
-		try
-		{
-			m_Socket.open (boost::asio::ip::udp::v4());
-			m_Socket.set_option (boost::asio::socket_base::receive_buffer_size (SSU_SOCKET_RECEIVE_BUFFER_SIZE));
-			m_Socket.set_option (boost::asio::socket_base::send_buffer_size (SSU_SOCKET_SEND_BUFFER_SIZE));
-			m_Socket.bind (m_Endpoint);
-			LogPrint (eLogInfo, "SSU: Start listening v4 port ", m_Endpoint.port());
-		}
-		catch ( std::exception & ex )
-		{
-			LogPrint (eLogError, "SSU: Failed to bind to v4 port ", m_Endpoint.port(), ": ", ex.what());
-			ThrowFatal ("Unable to start IPv4 SSU transport at port ", m_Endpoint.port(), ": ", ex.what ());
-		}
-	}
-
-	void SSUServer::OpenSocketV6 ()
-	{
-		try
-		{
-			m_SocketV6.open (boost::asio::ip::udp::v6());
-			m_SocketV6.set_option (boost::asio::ip::v6_only (true));
-			m_SocketV6.set_option (boost::asio::socket_base::receive_buffer_size (SSU_SOCKET_RECEIVE_BUFFER_SIZE));
-			m_SocketV6.set_option (boost::asio::socket_base::send_buffer_size (SSU_SOCKET_SEND_BUFFER_SIZE));
-#if defined(__linux__) && !defined(_NETINET_IN_H)
-			if (m_EndpointV6.address() == boost::asio::ip::address().from_string("::")) // only if not binded to address
-			{
-				// Set preference to use public IPv6 address -- tested on linux, not works on windows, and not tested on others
-#if (BOOST_VERSION >= 105500)
-				typedef boost::asio::detail::socket_option::integer<BOOST_ASIO_OS_DEF(IPPROTO_IPV6), IPV6_ADDR_PREFERENCES> ipv6PreferAddr;
-#else
-				typedef boost::asio::detail::socket_option::integer<IPPROTO_IPV6, IPV6_ADDR_PREFERENCES> ipv6PreferAddr;
-#endif
-				m_SocketV6.set_option (ipv6PreferAddr(IPV6_PREFER_SRC_PUBLIC | IPV6_PREFER_SRC_HOME | IPV6_PREFER_SRC_NONCGA));
-			}
-#endif
-			m_SocketV6.bind (m_EndpointV6);
-			LogPrint (eLogInfo, "SSU: Start listening v6 port ", m_EndpointV6.port());
-		}
-		catch ( std::exception & ex )
-		{
-			LogPrint (eLogError, "SSU: Failed to bind to v6 port ", m_EndpointV6.port(), ": ", ex.what());
-			ThrowFatal ("Unable to start IPv6 SSU transport at port ", m_Endpoint.port(), ": ", ex.what ());
-		}
-	}
-
-	void SSUServer::Start ()
-	{
-		i2p::config::GetOption("nettime.frompeers", m_IsSyncClockFromPeers);
-		m_IsRunning = true;
-		m_Thread = new std::thread (std::bind (&SSUServer::Run, this));
-		if (context.SupportsV4 ())
-		{
-			OpenSocket ();
-			m_ReceiversThread = new std::thread (std::bind (&SSUServer::RunReceivers, this));
-			m_ReceiversService.post (std::bind (&SSUServer::Receive, this));
-			ScheduleTermination ();
-			ScheduleIntroducersUpdateTimer (); // wait for 30 seconds and decide if we need introducers
-		}
-		if (context.SupportsV6 ())
-		{
-			OpenSocketV6 ();
-			m_ReceiversThreadV6 = new std::thread (std::bind (&SSUServer::RunReceiversV6, this));
-			m_ReceiversServiceV6.post (std::bind (&SSUServer::ReceiveV6, this));
-			ScheduleTerminationV6 ();
-			ScheduleIntroducersUpdateTimerV6 (); // wait for 30 seconds and decide if we need introducers
-		}
-		SchedulePeerTestsCleanupTimer ();
-	}
-
-	void SSUServer::Stop ()
-	{
-		DeleteAllSessions ();
-		m_IsRunning = false;
-		m_TerminationTimer.cancel ();
-		m_TerminationTimerV6.cancel ();
-		m_IntroducersUpdateTimer.cancel ();
-		m_IntroducersUpdateTimerV6.cancel ();
-		m_Service.stop ();
-		m_Socket.close ();
-		m_SocketV6.close ();
-		m_ReceiversService.stop ();
-		m_ReceiversServiceV6.stop ();
-		if (m_ReceiversThread)
-		{
-			m_ReceiversThread->join ();
-			delete m_ReceiversThread;
-			m_ReceiversThread = nullptr;
-		}
-		if (m_ReceiversThreadV6)
-		{
-			m_ReceiversThreadV6->join ();
-			delete m_ReceiversThreadV6;
-			m_ReceiversThreadV6 = nullptr;
-		}
-		if (m_Thread)
-		{
-			m_Thread->join ();
-			delete m_Thread;
-			m_Thread = nullptr;
-		}
-	}
-
-	void SSUServer::Run ()
-	{
-		i2p::util::SetThreadName("SSU");
-
-		while (m_IsRunning)
-		{
-			try
-			{
-				m_Service.run ();
-			}
-			catch (std::exception& ex)
-			{
-				LogPrint (eLogError, "SSU: Server runtime exception: ", ex.what ());
-			}
-		}
-	}
-
-	void SSUServer::RunReceivers ()
-	{
-		i2p::util::SetThreadName("SSUv4");
-
-		while (m_IsRunning)
-		{
-			try
-			{
-				m_ReceiversService.run ();
-			}
-			catch (std::exception& ex)
-			{
-				LogPrint (eLogError, "SSU: Receivers runtime exception: ", ex.what ());
-				if (m_IsRunning)
-				{
-					// restart socket
-					m_Socket.close ();
-					OpenSocket ();
-					Receive ();
-				}
-			}
-		}
-	}
-
-	void SSUServer::RunReceiversV6 ()
-	{
-		i2p::util::SetThreadName("SSUv6");
-
-		while (m_IsRunning)
-		{
-			try
-			{
-				m_ReceiversServiceV6.run ();
-			}
-			catch (std::exception& ex)
-			{
-				LogPrint (eLogError, "SSU: v6 receivers runtime exception: ", ex.what ());
-				if (m_IsRunning)
-				{
-					m_SocketV6.close ();
-					OpenSocketV6 ();
-					ReceiveV6 ();
-				}
-			}
-		}
-	}
-
-	void SSUServer::SetLocalAddress (const boost::asio::ip::address& localAddress)
-	{
-		if (localAddress.is_v6 ())
-			m_EndpointV6.address (localAddress);
-		else if (localAddress.is_v4 ())
-			m_Endpoint.address (localAddress);
-	}
-
-	void SSUServer::AddRelay (uint32_t tag, std::shared_ptr<SSUSession> relay)
-	{
-		m_Relays.emplace (tag, relay);
-	}
-
-	void SSUServer::RemoveRelay (uint32_t tag)
-	{
-		m_Relays.erase (tag);
-	}
-
-	std::shared_ptr<SSUSession> SSUServer::FindRelaySession (uint32_t tag)
-	{
-		auto it = m_Relays.find (tag);
-		if (it != m_Relays.end ())
-		{
-			if (it->second->GetState () == eSessionStateEstablished)
-				return it->second;
-			else
-				m_Relays.erase (it);
-		}
-		return nullptr;
-	}
-
-	void SSUServer::Send (const uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& to)
-	{
-		boost::system::error_code ec;
-		if (to.protocol () == boost::asio::ip::udp::v4())
-			m_Socket.send_to (boost::asio::buffer (buf, len), to, 0, ec);
-		else
-			m_SocketV6.send_to (boost::asio::buffer (buf, len), to, 0, ec);
-
-		if (ec)
-		{
-			LogPrint (eLogError, "SSU: Send exception: ", ec.message (), " while trying to send data to ", to.address (), ":", to.port (), " (length: ", len, ")");
-		}
-	}
-
-	void SSUServer::Receive ()
-	{
-		SSUPacket * packet = m_PacketsPool.AcquireMt ();
-		m_Socket.async_receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V4), packet->from,
-			std::bind (&SSUServer::HandleReceivedFrom, this, std::placeholders::_1, std::placeholders::_2, packet));
-	}
-
-	void SSUServer::ReceiveV6 ()
-	{
-		SSUPacket * packet = m_PacketsPool.AcquireMt ();
-		m_SocketV6.async_receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V6), packet->from,
-			std::bind (&SSUServer::HandleReceivedFromV6, this, std::placeholders::_1, std::placeholders::_2, packet));
-	}
-
-	void SSUServer::HandleReceivedFrom (const boost::system::error_code& ecode, std::size_t bytes_transferred, SSUPacket * packet)
-	{
-		if (!ecode
-			|| ecode == boost::asio::error::connection_refused
-			|| ecode == boost::asio::error::connection_reset
-			|| ecode == boost::asio::error::network_unreachable
-			|| ecode == boost::asio::error::host_unreachable
-#ifdef _WIN32 // windows can throw WinAPI error, which is not handled by ASIO
-			|| ecode.value() == boost::winapi::ERROR_CONNECTION_REFUSED_
-			|| ecode.value() == boost::winapi::ERROR_NETWORK_UNREACHABLE_
-			|| ecode.value() == boost::winapi::ERROR_HOST_UNREACHABLE_
-#endif
-		)
-		// just try continue reading when received ICMP response otherwise socket can crash,
-		// but better to find out which host were sent it and mark that router as unreachable
-		{
-			packet->len = bytes_transferred;
-			std::vector<SSUPacket *> packets;
-			packets.push_back (packet);
-
-			boost::system::error_code ec;
-			size_t moreBytes = m_Socket.available(ec);
-			if (!ec)
-			{
-				while (moreBytes && packets.size () < 25)
-				{
-					packet = m_PacketsPool.AcquireMt ();
-					packet->len = m_Socket.receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V4), packet->from, 0, ec);
-					if (!ec)
-					{
-						packets.push_back (packet);
-						moreBytes = m_Socket.available(ec);
-						if (ec) break;
-					}
-					else
-					{
-						LogPrint (eLogError, "SSU: receive_from error: code ", ec.value(), ": ", ec.message ());
-						m_PacketsPool.ReleaseMt (packet);
-						break;
-					}
-				}
-			}
-
-			m_Service.post (std::bind (&SSUServer::HandleReceivedPackets, this, packets, &m_Sessions));
-			Receive ();
-		}
-		else
-		{
-			m_PacketsPool.ReleaseMt (packet);
-			if (ecode != boost::asio::error::operation_aborted)
-			{
-				LogPrint (eLogError, "SSU: Receive error: code ", ecode.value(), ": ", ecode.message ());
-				m_Socket.close ();
-				OpenSocket ();
-				Receive ();
-			}
-		}
-	}
-
-	void SSUServer::HandleReceivedFromV6 (const boost::system::error_code& ecode, std::size_t bytes_transferred, SSUPacket * packet)
-	{
-		if (!ecode
-			|| ecode == boost::asio::error::connection_refused
-			|| ecode == boost::asio::error::connection_reset
-			|| ecode == boost::asio::error::network_unreachable
-			|| ecode == boost::asio::error::host_unreachable
-#ifdef _WIN32 // windows can throw WinAPI error, which is not handled by ASIO
-			|| ecode.value() == boost::winapi::ERROR_CONNECTION_REFUSED_
-			|| ecode.value() == boost::winapi::ERROR_NETWORK_UNREACHABLE_
-			|| ecode.value() == boost::winapi::ERROR_HOST_UNREACHABLE_
-#endif
-		)
-		// just try continue reading when received ICMP response otherwise socket can crash,
-		// but better to find out which host were sent it and mark that router as unreachable
-		{
-			packet->len = bytes_transferred;
-			std::vector<SSUPacket *> packets;
-			packets.push_back (packet);
-
-			boost::system::error_code ec;
-			size_t moreBytes = m_SocketV6.available (ec);
-			if (!ec)
-			{
-				while (moreBytes && packets.size () < 25)
-				{
-					packet = m_PacketsPool.AcquireMt ();
-					packet->len = m_SocketV6.receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V6), packet->from, 0, ec);
-					if (!ec)
-					{
-						packets.push_back (packet);
-						moreBytes = m_SocketV6.available(ec);
-						if (ec) break;
-					}
-					else
-					{
-						LogPrint (eLogError, "SSU: v6 receive_from error: code ", ec.value(), ": ", ec.message ());
-						m_PacketsPool.ReleaseMt (packet);;
-						break;
-					}
-				}
-			}
-
-			m_Service.post (std::bind (&SSUServer::HandleReceivedPackets, this, packets, &m_SessionsV6));
-			ReceiveV6 ();
-		}
-		else
-		{
-			m_PacketsPool.ReleaseMt (packet);
-			if (ecode != boost::asio::error::operation_aborted)
-			{
-				LogPrint (eLogError, "SSU: v6 receive error: code ", ecode.value(), ": ", ecode.message ());
-				m_SocketV6.close ();
-				OpenSocketV6 ();
-				ReceiveV6 ();
-			}
-		}
-	}
-
-	void SSUServer::HandleReceivedPackets (std::vector<SSUPacket *> packets,
-		std::map<boost::asio::ip::udp::endpoint, std::shared_ptr<SSUSession> > * sessions)
-	{
-		if (!m_IsRunning) return;
-		std::shared_ptr<SSUSession> session;
-		for (auto& packet: packets)
-		{
-			try
-			{
-				if (!session || session->GetRemoteEndpoint () != packet->from) // we received packet for other session than previous
-				{
-					if (session)
-					{
-						session->FlushData ();
-						session = nullptr;
-					}
-					auto it = sessions->find (packet->from);
-					if (it != sessions->end ())
-						session = it->second;
-					if (!session && packet->len > 0)
-					{
-						session = std::make_shared<SSUSession> (*this, packet->from);
-						session->WaitForConnect ();
-						(*sessions)[packet->from] = session;
-						LogPrint (eLogDebug, "SSU: New session from ", packet->from.address ().to_string (), ":", packet->from.port (), " created");
-					}
-				}
-				if (session)
-					session->ProcessNextMessage (packet->buf, packet->len, packet->from);
-			}
-			catch (std::exception& ex)
-			{
-				LogPrint (eLogError, "SSU: HandleReceivedPackets ", ex.what ());
-				if (session) session->FlushData ();
-				session = nullptr;
-			}
-		}
-		m_PacketsPool.ReleaseMt (packets);
-		if (session) session->FlushData ();
-	}
-
-	std::shared_ptr<SSUSession> SSUServer::FindSession (const boost::asio::ip::udp::endpoint& e) const
-	{
-		auto& sessions = e.address ().is_v6 () ? m_SessionsV6 : m_Sessions;
-		auto it = sessions.find (e);
-		if (it != sessions.end ())
-			return it->second;
-		else
-			return nullptr;
-	}
-
-	bool SSUServer::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest, bool v4only)
-	{
-		auto address = router->GetSSUAddress (v4only || !context.SupportsV6 ());
-		if (address)
-			return CreateSession (router, address, peerTest);
-		else
-			LogPrint (eLogWarning, "SSU: Router ", i2p::data::GetIdentHashAbbreviation (router->GetIdentHash ()), " doesn't have SSU address");
-		return false;
-	}
-
-	bool SSUServer::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router,
-		std::shared_ptr<const i2p::data::RouterInfo::Address> address, bool peerTest)
-	{
-		if (router && address)
-		{
-			if (address->UsesIntroducer ())
-				m_Service.post (std::bind (&SSUServer::CreateSessionThroughIntroducer, this, router, address, peerTest)); // always V4 thread
-			else
-			{
-				if (address->host.is_unspecified () || !address->port) return false;
-				boost::asio::ip::udp::endpoint remoteEndpoint (address->host, address->port);
-				m_Service.post (std::bind (&SSUServer::CreateDirectSession, this, router, remoteEndpoint, peerTest));
-			}
-		}
-		else
-			return false;
-		return true;
-	}
-
-	void SSUServer::CreateDirectSession (std::shared_ptr<const i2p::data::RouterInfo> router, boost::asio::ip::udp::endpoint remoteEndpoint, bool peerTest)
-	{
-		auto& sessions = remoteEndpoint.address ().is_v6 () ? m_SessionsV6 : m_Sessions;
-		auto it = sessions.find (remoteEndpoint);
-		if (it != sessions.end ())
-		{
-			auto session = it->second;
-			if (peerTest && session->GetState () == eSessionStateEstablished)
-				session->SendPeerTest ();
-		}
-		else
-		{
-			// otherwise create new session
-			auto session = std::make_shared<SSUSession> (*this, remoteEndpoint, router, peerTest);
-			sessions[remoteEndpoint] = session;
-
-			// connect
-			LogPrint (eLogDebug, "SSU: Creating new session to [", i2p::data::GetIdentHashAbbreviation (router->GetIdentHash ()), "] ",
-				remoteEndpoint.address ().to_string (), ":", remoteEndpoint.port ());
-			session->Connect ();
-		}
-	}
-
-	void SSUServer::CreateSessionThroughIntroducer (std::shared_ptr<const i2p::data::RouterInfo> router,
-		std::shared_ptr<const i2p::data::RouterInfo::Address> address, bool peerTest)
-	{
-		if (router && address && address->UsesIntroducer ())
-		{
-			if (address->IsV4 () && !i2p::context.SupportsV4 ()) return;
-			if (address->IsV6 () && !i2p::context.SupportsV6 ()) return;
-			if (!address->host.is_unspecified () && address->port)
-			{
-				// we rarely come here
-				auto& sessions = address->host.is_v6 () ? m_SessionsV6 : m_Sessions;
-				boost::asio::ip::udp::endpoint remoteEndpoint (address->host, address->port);
-				auto it = sessions.find (remoteEndpoint);
-				// check if session is presented already
-				if (it != sessions.end ())
-				{
-					auto session = it->second;
-					if (peerTest && session->GetState () == eSessionStateEstablished)
-						session->SendPeerTest ();
-					return;
-				}
-			}
-			// create new session
-			int numIntroducers = address->ssu->introducers.size ();
-			if (numIntroducers > 0)
-			{
-				uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-				std::shared_ptr<SSUSession> introducerSession;
-				const i2p::data::RouterInfo::Introducer * introducer = nullptr;
-				// we might have a session to introducer already
-				auto offset = rand ();
-				for (int i = 0; i < numIntroducers; i++)
-				{
-					auto intr = &(address->ssu->introducers[(offset + i)%numIntroducers]);
-					if (!intr->iPort) continue; // skip invalid introducer
-					if (intr->iExp > 0 && ts > intr->iExp) continue; // skip expired introducer
-					boost::asio::ip::udp::endpoint ep (intr->iHost, intr->iPort);
-					if (ep.address ().is_v4 () && address->IsV4 ()) // ipv4
-					{
-						if (!introducer) introducer = intr;
-						auto it = m_Sessions.find (ep);
-						if (it != m_Sessions.end ())
-						{
-							introducerSession = it->second;
-							break;
-						}
-					}
-					if (ep.address ().is_v6 () && address->IsV6 ()) // ipv6
-					{
-						if (!introducer) introducer = intr;
-						auto it = m_SessionsV6.find (ep);
-						if (it != m_SessionsV6.end ())
-						{
-							introducerSession = it->second;
-							break;
-						}
-					}
-				}
-				if (!introducer)
-				{
-					LogPrint (eLogWarning, "SSU: Can't connect to unreachable router and no compatibe non-expired introducers presented");
-					return;
-				}
-
-				if (introducerSession) // session found
-					LogPrint (eLogWarning, "SSU: Session to introducer already exists");
-				else // create new
-				{
-					LogPrint (eLogDebug, "SSU: Creating new session to introducer ", introducer->iHost);
-					boost::asio::ip::udp::endpoint introducerEndpoint (introducer->iHost, introducer->iPort);
-					introducerSession = std::make_shared<SSUSession> (*this, introducerEndpoint, router);
-					if (introducerEndpoint.address ().is_v4 ())
-						m_Sessions[introducerEndpoint] = introducerSession;
-					else if (introducerEndpoint.address ().is_v6 ())
-						m_SessionsV6[introducerEndpoint] = introducerSession;
-				}
-				if (!address->host.is_unspecified () && address->port)
-				{
-					// create session
-					boost::asio::ip::udp::endpoint remoteEndpoint (address->host, address->port);
-					auto session = std::make_shared<SSUSession> (*this, remoteEndpoint, router, peerTest);
-					if (address->host.is_v4 ())
-						m_Sessions[remoteEndpoint] = session;
-					else if (address->host.is_v6 ())
-						m_SessionsV6[remoteEndpoint] = session;
-
-					// introduce
-					LogPrint (eLogInfo, "SSU: Introduce new session to [", i2p::data::GetIdentHashAbbreviation (router->GetIdentHash ()),
-							"] through introducer ", introducer->iHost, ":", introducer->iPort);
-					session->WaitForIntroduction ();
-					if ((address->host.is_v4 () && i2p::context.GetStatus () == eRouterStatusFirewalled) ||
-						(address->host.is_v6 () && i2p::context.GetStatusV6 () == eRouterStatusFirewalled))
-					{
-						uint8_t buf[1];
-						Send (buf, 0, remoteEndpoint); // send HolePunch
-					}
-				}
-				introducerSession->Introduce (*introducer, router);
-			}
-			else
-				LogPrint (eLogWarning, "SSU: Can't connect to unreachable router and no introducers present");
-		}
-	}
-
-	void SSUServer::DeleteSession (std::shared_ptr<SSUSession> session)
-	{
-		if (session)
-		{
-			session->Close ();
-			auto& ep = session->GetRemoteEndpoint ();
-			if (ep.address ().is_v6 ())
-				m_SessionsV6.erase (ep);
-			else
-				m_Sessions.erase (ep);
-		}
-	}
-
-	void SSUServer::DeleteAllSessions ()
-	{
-		for (auto& it: m_Sessions)
-			it.second->Close ();
-		m_Sessions.clear ();
-
-		for (auto& it: m_SessionsV6)
-			it.second->Close ();
-		m_SessionsV6.clear ();
-	}
-
-	template<typename Filter>
-	std::shared_ptr<SSUSession> SSUServer::GetRandomV4Session (Filter filter) // v4 only
-	{
-		std::vector<std::shared_ptr<SSUSession> > filteredSessions;
-		for (const auto& s :m_Sessions)
-			if (filter (s.second)) filteredSessions.push_back (s.second);
-		if (filteredSessions.size () > 0)
-		{
-			auto ind = rand () % filteredSessions.size ();
-			return filteredSessions[ind];
-		}
-		return nullptr;
-	}
-
-	std::shared_ptr<SSUSession> SSUServer::GetRandomEstablishedV4Session (std::shared_ptr<const SSUSession> excluded) // v4 only
-	{
-		return GetRandomV4Session (
-			[excluded](std::shared_ptr<SSUSession> session)->bool
-			{
-				return session->GetState () == eSessionStateEstablished && session != excluded;
-			}
-		);
-	}
-
-	template<typename Filter>
-	std::shared_ptr<SSUSession> SSUServer::GetRandomV6Session (Filter filter) // v6 only
-	{
-		std::vector<std::shared_ptr<SSUSession> > filteredSessions;
-		for (const auto& s :m_SessionsV6)
-			if (filter (s.second)) filteredSessions.push_back (s.second);
-		if (filteredSessions.size () > 0)
-		{
-			auto ind = rand () % filteredSessions.size ();
-			return filteredSessions[ind];
-		}
-		return nullptr;
-	}
-
-	std::shared_ptr<SSUSession> SSUServer::GetRandomEstablishedV6Session (std::shared_ptr<const SSUSession> excluded) // v6 only
-	{
-		return GetRandomV6Session (
-			[excluded](std::shared_ptr<SSUSession> session)->bool
-			{
-				return session->GetState () == eSessionStateEstablished && session != excluded;
-			}
-		);
-	}
-
-	std::list<std::shared_ptr<SSUSession> > SSUServer::FindIntroducers (int maxNumIntroducers,
-		bool v4, std::set<i2p::data::IdentHash>& excluded)
-	{
-		uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-		std::list<std::shared_ptr<SSUSession> > ret;
-		const auto& sessions = v4 ? m_Sessions : m_SessionsV6;
-		for (const auto& s : sessions)
-		{
-			if (s.second->GetRelayTag () && s.second->GetState () == eSessionStateEstablished &&
-				ts < s.second->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_EXPIRATION)
-				ret.push_back (s.second);
-			else if (s.second->GetRemoteIdentity ())
-				excluded.insert (s.second->GetRemoteIdentity ()->GetIdentHash ());
-		}
-		if ((int)ret.size () > maxNumIntroducers)
-		{
-			// shink ret randomly
-			int sz = ret.size () - maxNumIntroducers;
-			for (int i = 0; i < sz; i++)
-			{
-				auto ind = rand () % ret.size ();
-				auto it = ret.begin ();
-				std::advance (it, ind);
-				ret.erase (it);
-			}
-		}
-		return ret;
-	}
-
-	void SSUServer::RescheduleIntroducersUpdateTimer ()
-	{
-		m_IntroducersUpdateTimer.cancel ();
-		m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL/2));
-		m_IntroducersUpdateTimer.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
-			this, std::placeholders::_1, true));
-	}
-
-	void SSUServer::ScheduleIntroducersUpdateTimer ()
-	{
-		m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL));
-		m_IntroducersUpdateTimer.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
-			this, std::placeholders::_1, true));
-	}
-
-	void SSUServer::RescheduleIntroducersUpdateTimerV6 ()
-	{
-		m_IntroducersUpdateTimerV6.cancel ();
-		m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL/2));
-		m_IntroducersUpdateTimerV6.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
-			this, std::placeholders::_1, false));
-	}
-
-	void SSUServer::ScheduleIntroducersUpdateTimerV6 ()
-	{
-		m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL));
-		m_IntroducersUpdateTimerV6.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
-			this, std::placeholders::_1, false));
-	}
-
-	void SSUServer::HandleIntroducersUpdateTimer (const boost::system::error_code& ecode, bool v4)
-	{
-		if (ecode != boost::asio::error::operation_aborted)
-		{
-			// timeout expired
-			if (v4)
-			{
-				if (i2p::context.GetStatus () == eRouterStatusTesting)
-				{
-					// we still don't know if we need introducers
-					ScheduleIntroducersUpdateTimer ();
-					return;
-				}
-				if (i2p::context.GetStatus () != eRouterStatusFirewalled)
-				{
-					// we don't need introducers
-					m_Introducers.clear ();
-					return;
-				}
-				// we are firewalled
-				if (!i2p::context.IsUnreachable ()) i2p::context.SetUnreachable (true, false); // v4
-			}
-			else
-			{
-				if (i2p::context.GetStatusV6 () == eRouterStatusTesting)
-				{
-					// we still don't know if we need introducers
-					ScheduleIntroducersUpdateTimerV6 ();
-					return;
-				}
-				if (i2p::context.GetStatusV6 () != eRouterStatusFirewalled)
-				{
-					// we don't need introducers
-					m_IntroducersV6.clear ();
-					return;
-				}
-				// we are firewalled
-				auto addr = i2p::context.GetRouterInfo ().GetSSUV6Address ();
-				if (addr && addr->ssu && addr->ssu->introducers.empty ())
-					i2p::context.SetUnreachable (false, true); // v6
-			}
-
-			std::list<boost::asio::ip::udp::endpoint> newList;
-			size_t numIntroducers = 0;
-			uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-			std::set<i2p::data::IdentHash> excluded;
-			auto& introducers = v4 ? m_Introducers : m_IntroducersV6;
-			for (const auto& it : introducers)
-			{
-				auto session = FindSession (it);
-				if (session)
-				{
-					if (ts < session->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_EXPIRATION)
-						session->SendKeepAlive ();
-					if (ts < session->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_DURATION)
-					{
-						newList.push_back (it);
-						numIntroducers++;
-						if (session->GetRemoteIdentity ())
-							excluded.insert (session->GetRemoteIdentity ()->GetIdentHash ());
-					}
-					else
-						session = nullptr;
-				}
-				if (!session)
-					i2p::context.RemoveIntroducer (it);
-			}
-			if (numIntroducers < SSU_MAX_NUM_INTRODUCERS)
-			{
-				// create new
-				auto sessions = FindIntroducers (SSU_MAX_NUM_INTRODUCERS, v4, excluded); // try to find if duplicates
-				if (sessions.empty () && !introducers.empty ())
-				{
-					// bump creation time for previous introducers if no new sessions found
-					LogPrint (eLogDebug, "SSU: No new introducers found. Trying to reuse existing");
-					for (const auto& it : introducers)
-					{
-						auto session = FindSession (it);
-						if (session)
-							session->SetCreationTime (session->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_DURATION);
-					}
-					// try again
-					excluded.clear ();
-					sessions = FindIntroducers (SSU_MAX_NUM_INTRODUCERS, v4, excluded);
-				}
-				for (const auto& it1: sessions)
-				{
-					const auto& ep = it1->GetRemoteEndpoint ();
-					i2p::data::RouterInfo::Introducer introducer;
-					introducer.iHost = ep.address ();
-					introducer.iPort = ep.port ();
-					introducer.iTag = it1->GetRelayTag ();
-					introducer.iKey = it1->GetIntroKey ();
-					introducer.iExp = it1->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_EXPIRATION;
-					if (i2p::context.AddIntroducer (introducer))
-					{
-						newList.push_back (ep);
-						if (newList.size () >= SSU_MAX_NUM_INTRODUCERS) break;
-					}
-					if (it1->GetRemoteIdentity ())
-						excluded.insert (it1->GetRemoteIdentity ()->GetIdentHash ());
-				}
-			}
-			introducers = newList;
-			if (introducers.size () < SSU_MAX_NUM_INTRODUCERS)
-			{
-				for (auto i = introducers.size (); i < SSU_MAX_NUM_INTRODUCERS; i++)
-				{
-					auto introducer = i2p::data::netdb.GetRandomIntroducer (v4, excluded);
-					if (introducer)
-					{
-						auto address = v4 ? introducer->GetSSUAddress (true) : introducer->GetSSUV6Address ();
-						if (address && !address->host.is_unspecified () && address->port)
-						{
-							boost::asio::ip::udp::endpoint ep (address->host, address->port);
-							if (std::find (introducers.begin (), introducers.end (), ep) == introducers.end ()) // not connected yet
-							{
-								CreateDirectSession (introducer, ep, false);
-								excluded.insert (introducer->GetIdentHash ());
-							}
-						}
-					}
-					else
-					{
-						LogPrint (eLogDebug, "SSU: Can't find more introducers");
-						break;
-					}
-				}
-			}
-			if (v4)
-				ScheduleIntroducersUpdateTimer ();
-			else
-				ScheduleIntroducersUpdateTimerV6 ();
-		}
-	}
-
-	void SSUServer::NewPeerTest (uint32_t nonce, PeerTestParticipant role, std::shared_ptr<SSUSession> session)
-	{
-		m_PeerTests[nonce] = { i2p::util::GetMillisecondsSinceEpoch (), role, session };
-	}
-
-	PeerTestParticipant SSUServer::GetPeerTestParticipant (uint32_t nonce)
-	{
-		auto it = m_PeerTests.find (nonce);
-		if (it != m_PeerTests.end ())
-			return it->second.role;
-		else
-			return ePeerTestParticipantUnknown;
-	}
-
-	std::shared_ptr<SSUSession> SSUServer::GetPeerTestSession (uint32_t nonce)
-	{
-		auto it = m_PeerTests.find (nonce);
-		if (it != m_PeerTests.end ())
-			return it->second.session;
-		else
-			return nullptr;
-	}
-
-	void SSUServer::UpdatePeerTest (uint32_t nonce, PeerTestParticipant role)
-	{
-		auto it = m_PeerTests.find (nonce);
-		if (it != m_PeerTests.end ())
-			it->second.role = role;
-	}
-
-	void SSUServer::RemovePeerTest (uint32_t nonce)
-	{
-		m_PeerTests.erase (nonce);
-	}
-
-	void SSUServer::SchedulePeerTestsCleanupTimer ()
-	{
-		m_PeerTestsCleanupTimer.expires_from_now (boost::posix_time::seconds(SSU_PEER_TEST_TIMEOUT));
-		m_PeerTestsCleanupTimer.async_wait (std::bind (&SSUServer::HandlePeerTestsCleanupTimer,
-			this, std::placeholders::_1));
-	}
-
-	void SSUServer::HandlePeerTestsCleanupTimer (const boost::system::error_code& ecode)
-	{
-		if (ecode != boost::asio::error::operation_aborted)
-		{
-			int numDeleted = 0;
-			uint64_t ts = i2p::util::GetMillisecondsSinceEpoch ();
-			for (auto it = m_PeerTests.begin (); it != m_PeerTests.end ();)
-			{
-				if (ts > it->second.creationTime + SSU_PEER_TEST_TIMEOUT*1000LL)
-				{
-					numDeleted++;
-					it = m_PeerTests.erase (it);
-				}
-				else
-					++it;
-			}
-			if (numDeleted > 0)
-				LogPrint (eLogDebug, "SSU: ", numDeleted, " peer tests have been expired");
-			// some cleaups. TODO: use separate timer
-			m_FragmentsPool.CleanUp ();
-			m_IncompleteMessagesPool.CleanUp ();
-			m_SentMessagesPool.CleanUp ();
-
-			SchedulePeerTestsCleanupTimer ();
-		}
-	}
-
-	void SSUServer::ScheduleTermination ()
-	{
-		uint64_t timeout = SSU_TERMINATION_CHECK_TIMEOUT + (rand () % SSU_TERMINATION_CHECK_TIMEOUT)/5;
-		m_TerminationTimer.expires_from_now (boost::posix_time::seconds(timeout));
-		m_TerminationTimer.async_wait (std::bind (&SSUServer::HandleTerminationTimer,
-			this, std::placeholders::_1));
-	}
-
-	void SSUServer::HandleTerminationTimer (const boost::system::error_code& ecode)
-	{
-		if (ecode != boost::asio::error::operation_aborted)
-		{
-			auto ts = i2p::util::GetSecondsSinceEpoch ();
-			for (auto& it: m_Sessions)
-				if (it.second->IsTerminationTimeoutExpired (ts))
-				{
-					auto session = it.second;
-					if (it.first != session->GetRemoteEndpoint ())
-						LogPrint (eLogWarning, "SSU: Remote endpoint ", session->GetRemoteEndpoint (), " doesn't match key ", it.first, " adjusted");
-					m_Service.post ([session]
-						{
-							LogPrint (eLogWarning, "SSU: No activity with ", session->GetRemoteEndpoint (), " for ", session->GetTerminationTimeout (), " seconds");
-							session->Failed ();
-						});
-				}
-				else
-					it.second->CleanUp (ts);
-			ScheduleTermination ();
-		}
-	}
-
-	void SSUServer::ScheduleTerminationV6 ()
-	{
-		uint64_t timeout = SSU_TERMINATION_CHECK_TIMEOUT + (rand () % SSU_TERMINATION_CHECK_TIMEOUT)/5;
-		m_TerminationTimerV6.expires_from_now (boost::posix_time::seconds(timeout));
-		m_TerminationTimerV6.async_wait (std::bind (&SSUServer::HandleTerminationTimerV6,
-			this, std::placeholders::_1));
-	}
-
-	void SSUServer::HandleTerminationTimerV6 (const boost::system::error_code& ecode)
-	{
-		if (ecode != boost::asio::error::operation_aborted)
-		{
-			auto ts = i2p::util::GetSecondsSinceEpoch ();
-			for (auto& it: m_SessionsV6)
-				if (it.second->IsTerminationTimeoutExpired (ts))
-				{
-					auto session = it.second;
-					if (it.first != session->GetRemoteEndpoint ())
-						LogPrint (eLogWarning, "SSU: Remote endpoint ", session->GetRemoteEndpoint (), " doesn't match key ", it.first);
-					m_Service.post ([session]
-						{
-							LogPrint (eLogWarning, "SSU: No activity with ", session->GetRemoteEndpoint (), " for ", session->GetTerminationTimeout (), " seconds");
-							session->Failed ();
-						});
-				}
-				else
-					it.second->CleanUp (ts);
-			ScheduleTerminationV6 ();
-		}
-	}
-}
-}

libi2pd/SSU.h

@@ -1,159 +0,0 @@
-/*
-* Copyright (c) 2013-2022, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#ifndef SSU_H__
-#define SSU_H__
-
-#include <inttypes.h>
-#include <string.h>
-#include <map>
-#include <list>
-#include <set>
-#include <thread>
-#include <mutex>
-#include <boost/asio.hpp>
-#include "Crypto.h"
-#include "util.h"
-#include "I2PEndian.h"
-#include "Identity.h"
-#include "RouterInfo.h"
-#include "I2NPProtocol.h"
-#include "SSUSession.h"
-
-namespace i2p
-{
-namespace transport
-{
-	const int SSU_KEEP_ALIVE_INTERVAL = 30; // 30 seconds
-	const int SSU_PEER_TEST_TIMEOUT = 60; // 60 seconds
-	const int SSU_TO_INTRODUCER_SESSION_DURATION = 3600; // 1 hour
-	const int SSU_TO_INTRODUCER_SESSION_EXPIRATION = 4800; // 80 minutes
-	const int SSU_TERMINATION_CHECK_TIMEOUT = 30; // 30 seconds
-	const size_t SSU_MAX_NUM_INTRODUCERS = 3;
-	const size_t SSU_SOCKET_RECEIVE_BUFFER_SIZE = 0x1FFFF; // 128K
-	const size_t SSU_SOCKET_SEND_BUFFER_SIZE = 0x1FFFF; // 128K
-
-	struct SSUPacket
-	{
-		i2p::crypto::AESAlignedBuffer<SSU_MTU_V6 + 18> buf; // max MTU + iv + size
-		boost::asio::ip::udp::endpoint from;
-		size_t len;
-	};
-
-	class SSUServer
-	{
-		public:
-
-			SSUServer (int port);
-			~SSUServer ();
-			void Start ();
-			void Stop ();
-			bool CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest = false, bool v4only = false);
-			bool CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router,
-				std::shared_ptr<const i2p::data::RouterInfo::Address> address, bool peerTest = false);
-			void CreateDirectSession (std::shared_ptr<const i2p::data::RouterInfo> router, boost::asio::ip::udp::endpoint remoteEndpoint, bool peerTest);
-			std::shared_ptr<SSUSession> FindSession (const boost::asio::ip::udp::endpoint& e) const;
-			std::shared_ptr<SSUSession> GetRandomEstablishedV4Session (std::shared_ptr<const SSUSession> excluded);
-			std::shared_ptr<SSUSession> GetRandomEstablishedV6Session (std::shared_ptr<const SSUSession> excluded);
-			void DeleteSession (std::shared_ptr<SSUSession> session);
-			void DeleteAllSessions ();
-
-			boost::asio::io_service& GetService () { return m_Service; };
-			i2p::util::MemoryPool<Fragment>& GetFragmentsPool () { return m_FragmentsPool; };
-			i2p::util::MemoryPool<IncompleteMessage>& GetIncompleteMessagesPool () { return m_IncompleteMessagesPool; };
-			i2p::util::MemoryPool<SentMessage>& GetSentMessagesPool () { return m_SentMessagesPool; };
-
-			uint16_t GetPort () const { return m_Endpoint.port (); };
-			bool IsSyncClockFromPeers () const { return m_IsSyncClockFromPeers; };
-			void SetLocalAddress (const boost::asio::ip::address& localAddress);
-
-			void Send (const uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& to);
-			void AddRelay (uint32_t tag, std::shared_ptr<SSUSession> relay);
-			void RemoveRelay (uint32_t tag);
-			std::shared_ptr<SSUSession> FindRelaySession (uint32_t tag);
-			void RescheduleIntroducersUpdateTimer ();
-			void RescheduleIntroducersUpdateTimerV6 ();
-
-			void NewPeerTest (uint32_t nonce, PeerTestParticipant role, std::shared_ptr<SSUSession> session = nullptr);
-			PeerTestParticipant GetPeerTestParticipant (uint32_t nonce);
-			std::shared_ptr<SSUSession> GetPeerTestSession (uint32_t nonce);
-			void UpdatePeerTest (uint32_t nonce, PeerTestParticipant role);
-			void RemovePeerTest (uint32_t nonce);
-
-		private:
-
-			void OpenSocket ();
-			void OpenSocketV6 ();
-			void Run ();
-			void RunReceivers ();
-			void RunReceiversV6 ();
-			void Receive ();
-			void ReceiveV6 ();
-			void HandleReceivedFrom (const boost::system::error_code& ecode, std::size_t bytes_transferred, SSUPacket * packet);
-			void HandleReceivedFromV6 (const boost::system::error_code& ecode, std::size_t bytes_transferred, SSUPacket * packet);
-			void HandleReceivedPackets (std::vector<SSUPacket *> packets,
-				std::map<boost::asio::ip::udp::endpoint, std::shared_ptr<SSUSession> >* sessions);
-
-			void CreateSessionThroughIntroducer (std::shared_ptr<const i2p::data::RouterInfo> router,
-				std::shared_ptr<const i2p::data::RouterInfo::Address> address, bool peerTest = false);
-			template<typename Filter>
-			std::shared_ptr<SSUSession> GetRandomV4Session (Filter filter);
-			template<typename Filter>
-			std::shared_ptr<SSUSession> GetRandomV6Session (Filter filter);
-
-			std::list<std::shared_ptr<SSUSession> > FindIntroducers (int maxNumIntroducers, bool v4, std::set<i2p::data::IdentHash>& excluded);
-			void ScheduleIntroducersUpdateTimer ();
-			void ScheduleIntroducersUpdateTimerV6 ();
-			void HandleIntroducersUpdateTimer (const boost::system::error_code& ecode, bool v4);
-
-			void SchedulePeerTestsCleanupTimer ();
-			void HandlePeerTestsCleanupTimer (const boost::system::error_code& ecode);
-
-			// timer
-			void ScheduleTermination ();
-			void HandleTerminationTimer (const boost::system::error_code& ecode);
-			void ScheduleTerminationV6 ();
-			void HandleTerminationTimerV6 (const boost::system::error_code& ecode);
-
-		private:
-
-			struct PeerTest
-			{
-				uint64_t creationTime;
-				PeerTestParticipant role;
-				std::shared_ptr<SSUSession> session; // for Bob to Alice
-			};
-
-			volatile bool m_IsRunning;
-			std::thread * m_Thread, * m_ReceiversThread, * m_ReceiversThreadV6;
-			boost::asio::io_service m_Service, m_ReceiversService, m_ReceiversServiceV6;
-			boost::asio::io_service::work m_Work, m_ReceiversWork, m_ReceiversWorkV6;
-			boost::asio::ip::udp::endpoint m_Endpoint, m_EndpointV6;
-			boost::asio::ip::udp::socket m_Socket, m_SocketV6;
-			boost::asio::deadline_timer m_IntroducersUpdateTimer, m_IntroducersUpdateTimerV6,
-				m_PeerTestsCleanupTimer, m_TerminationTimer, m_TerminationTimerV6;
-			bool m_IsSyncClockFromPeers;
-			std::list<boost::asio::ip::udp::endpoint> m_Introducers, m_IntroducersV6; // introducers we are connected to
-			std::map<boost::asio::ip::udp::endpoint, std::shared_ptr<SSUSession> > m_Sessions, m_SessionsV6;
-			std::map<uint32_t, std::shared_ptr<SSUSession> > m_Relays; // we are introducer
-			std::map<uint32_t, PeerTest> m_PeerTests; // nonce -> creation time in milliseconds
-
-			i2p::util::MemoryPool<Fragment> m_FragmentsPool;
-			i2p::util::MemoryPool<IncompleteMessage> m_IncompleteMessagesPool;
-			i2p::util::MemoryPool<SentMessage> m_SentMessagesPool;
-			i2p::util::MemoryPoolMt<SSUPacket> m_PacketsPool;
-
-		public:
-			// for HTTP only
-			const decltype(m_Sessions)& GetSessions () const { return m_Sessions; };
-			const decltype(m_SessionsV6)& GetSessionsV6 () const { return m_SessionsV6; };
-	};
-}
-}
-
-#endif

libi2pd/SSU2.cpp

@@ -68,9 +68,8 @@ namespace transport
 						if (ssu2Port) port = ssu2Port;
 						else
 						{
-							bool ssu;   i2p::config::GetOption("ssu", ssu);
 							uint16_t p; i2p::config::GetOption ("port", p);
-							if (p) port = ssu ? (p + 1) : p;
+							if (p) port = p;
 						}
 					}
 					if (port)
@@ -409,7 +408,7 @@ namespace transport
 				return it->second;
 			it++;
 		}
-		// not found, try from begining
+		// not found, try from beginning
 		it = m_Sessions.begin ();
 		while (it != m_Sessions.end () && ind)
 		{
@@ -642,7 +641,7 @@ namespace transport
 		// try to find existing session first
 		for (auto& it: address->ssu->introducers)
 		{
-			auto it1 = m_SessionsByRouterHash.find (it.iKey);
+			auto it1 = m_SessionsByRouterHash.find (it.iH);
 			if (it1 != m_SessionsByRouterHash.end ())
 			{
 				it1->second->Introduce (session, it.iTag);
@@ -655,17 +654,17 @@ namespace transport
 		uint32_t relayTag = 0;
 		if (!address->ssu->introducers.empty ())
 		{
-			std::vector<int> indicies;
+			std::vector<int> indices;
-			for (int i = 0; i < (int)address->ssu->introducers.size (); i++) indicies.push_back(i);
+			for (int i = 0; i < (int)address->ssu->introducers.size (); i++) indices.push_back(i);
-			if (indicies.size () > 1)
+			if (indices.size () > 1)
-				std::shuffle (indicies.begin(), indicies.end(), std::mt19937(std::random_device()()));
+				std::shuffle (indices.begin(), indices.end(), std::mt19937(std::random_device()()));
 
-			for (auto i: indicies)
+			for (auto i: indices)
 			{
-				const auto& introducer = address->ssu->introducers[indicies[i]];
+				const auto& introducer = address->ssu->introducers[indices[i]];
 				if (introducer.iTag && ts < introducer.iExp)
 				{
-					r = i2p::data::netdb.FindRouter (introducer.iKey);
+					r = i2p::data::netdb.FindRouter (introducer.iH);
 					if (r && r->IsReachableFrom (i2p::context.GetRouterInfo ()))
 					{
 						relayTag = introducer.iTag;
@@ -714,7 +713,7 @@ namespace transport
 			// introducers not found, try to request them
 			for (auto& it: address->ssu->introducers)
 				if (it.iTag && ts < it.iExp)
-					i2p::data::netdb.RequestDestination (it.iKey);
+					i2p::data::netdb.RequestDestination (it.iH);
 		}
 	}
 
@@ -962,7 +961,8 @@ namespace transport
 			{
 				i2p::data::RouterInfo::Introducer introducer;
 				introducer.iTag = it->GetRelayTag ();
-				introducer.iKey = it->GetRemoteIdentity ()->GetIdentHash ();
+				introducer.iH = it->GetRemoteIdentity ()->GetIdentHash ();
+				introducer.isH = true;
 				introducer.iExp = it->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION;
 				excluded.insert (it->GetRemoteIdentity ()->GetIdentHash ());
 				if (i2p::context.AddSSU2Introducer (introducer, v4))
@@ -1068,7 +1068,7 @@ namespace transport
 				// we are firewalled
 				auto addr = i2p::context.GetRouterInfo ().GetSSU2V4Address ();
 				if (addr && addr->ssu && addr->ssu->introducers.empty ())
-					i2p::context.SetUnreachableSSU2 (true, false); // v4
+					i2p::context.SetUnreachable (true, false); // v4
 
 				UpdateIntroducers (true);
 				ScheduleIntroducersUpdateTimer ();
@@ -1091,7 +1091,7 @@ namespace transport
 				// we are firewalled
 				auto addr = i2p::context.GetRouterInfo ().GetSSU2V6Address ();
 				if (addr && addr->ssu && addr->ssu->introducers.empty ())
-					i2p::context.SetUnreachableSSU2 (false, true); // v6
+					i2p::context.SetUnreachable (false, true); // v6
 
 				UpdateIntroducers (false);
 				ScheduleIntroducersUpdateTimerV6 ();

libi2pd/SSU2Session.cpp

@@ -94,7 +94,10 @@ namespace transport
 		if (!ecode)
 		{
 			// timeout expired
-			LogPrint (eLogWarning, "SSU2: Session with ", m_RemoteEndpoint, " was not established after ", SSU2_CONNECT_TIMEOUT, " seconds");
+			if (m_State == eSSU2SessionStateIntroduced) // WaitForIntroducer
+				LogPrint (eLogWarning, "SSU2: Session was not introduced after ", SSU2_CONNECT_TIMEOUT, " seconds");
+			else	
+				LogPrint (eLogWarning, "SSU2: Session with ", m_RemoteEndpoint, " was not established after ", SSU2_CONNECT_TIMEOUT, " seconds");
 			Terminate ();
 		}
 	}
@@ -103,7 +106,7 @@ namespace transport
 	{
 		// we are Alice
 		if (!session || !relayTag) return false;
-		// find local adddress to introduce
+		// find local address to introduce
 		auto localAddress = session->FindLocalAddress ();
 		if (!localAddress) return false;
 		// create nonce
@@ -520,6 +523,11 @@ namespace transport
 			case eSSU2PeerTest:
 			{
 				// TODO: remove later
+				if (len < 32)
+				{
+					LogPrint (eLogWarning, "SSU2: PeerTest message too short ", len);
+					break;
+				}		
 				const uint8_t nonce[12] = {0};
 				uint64_t headerX[2];
 				i2p::crypto::ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
@@ -603,6 +611,11 @@ namespace transport
 	void SSU2Session::ProcessSessionRequest (Header& header, uint8_t * buf, size_t len)
 	{
 		// we are Bob
+		if (len < 80)
+		{
+			LogPrint (eLogWarning, "SSU2: SessionRequest message too short ", len);
+			return;
+		}	
 		const uint8_t nonce[12] = {0};
 		uint8_t headerX[48];
 		i2p::crypto::ChaCha20 (buf + 16, 48, i2p::context.GetSSU2IntroKey (), nonce, headerX);
@@ -723,6 +736,11 @@ namespace transport
 		if (header.h.type != eSSU2SessionCreated)
 		// this situation is valid, because it might be Retry with different encryption
 			return false;
+		if (len < 80)
+		{
+			LogPrint (eLogWarning, "SSU2: SessionCreated message too short ", len);
+			return false;
+		}
 		const uint8_t nonce[12] = {0};
 		uint8_t headerX[48];
 		i2p::crypto::ChaCha20 (buf + 16, 48, kh2, nonce, headerX);
@@ -863,6 +881,12 @@ namespace transport
 				LogPrint (eLogError, "SSU2: Too many fragments ", numFragments, " in SessionConfirmed");
 				return false;
 			}
+			if (len < 32)
+			{
+				LogPrint (eLogWarning, "SSU2: SessionConfirmed fragment too short ", len);
+				if (m_SessionConfirmedFragment) m_SessionConfirmedFragment.reset (nullptr);
+				return false;
+			}	
 			if (!(header.h.flags[0] & 0xF0))
 			{
 				// first fragment
@@ -910,6 +934,12 @@ namespace transport
 				len = m_SessionConfirmedFragment->payloadSize + 16;
 			}
 		}
+		if (len < 80)
+		{
+			LogPrint (eLogWarning, "SSU2: SessionConfirmed message too short ", len);
+			if (m_SessionConfirmedFragment) m_SessionConfirmedFragment.reset (nullptr);
+			return false;
+		}	
 		// KDF for Session Confirmed part 1
 		m_NoiseState->MixHash (header.buf, 16); // h = SHA256(h || header)
 		// decrypt part1
@@ -1118,6 +1148,11 @@ namespace transport
 			LogPrint (eLogWarning, "SSU2: Unexpected message type ", (int)header.h.type, " instead ", (int)eSSU2Retry);
 			return false;
 		}
+		if (len < 48)
+		{
+			LogPrint (eLogWarning, "SSU2: Retry message too short ", len);
+			return false;
+		}	
 		uint8_t nonce[12] = {0};
 		uint64_t headerX[2]; // sourceConnID, token
 		i2p::crypto::ChaCha20 (buf + 16, 16, m_Address->i, nonce, (uint8_t *)headerX);
@@ -1202,6 +1237,11 @@ namespace transport
 			LogPrint (eLogWarning, "SSU2: Unexpected message type ", (int)header.h.type, " instead ", (int)eSSU2HolePunch);
 			return false;
 		}
+		if (len < 48)
+		{
+			LogPrint (eLogWarning, "SSU2: HolePunch message too short ", len);
+			return false;
+		}	
 		uint8_t nonce[12] = {0};
 		uint64_t headerX[2]; // sourceConnID, token
 		i2p::crypto::ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
@@ -1273,6 +1313,11 @@ namespace transport
 			LogPrint (eLogWarning, "SSU2: Unexpected message type ", (int)header.h.type, " instead ", (int)eSSU2PeerTest);
 			return false;
 		}
+		if (len < 48)
+		{
+			LogPrint (eLogWarning, "SSU2: PeerTest message too short ", len);
+			return false;
+		}	
 		uint8_t nonce[12] = {0};
 		uint64_t headerX[2]; // sourceConnID, token
 		i2p::crypto::ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
@@ -1340,6 +1385,11 @@ namespace transport
 			m_RemoteEndpoint = from;
 			SendPathChallenge ();
 		}
+		if (len < 32)
+		{
+			LogPrint (eLogWarning, "SSU2: Data message too short ", len);
+			return;
+		}	
 		uint8_t payload[SSU2_MAX_PACKET_SIZE];
 		size_t payloadSize = len - 32;
 		uint32_t packetNum = be32toh (header.h.packetNum);
@@ -2266,9 +2316,9 @@ namespace transport
 		if (m_Address)
 		{
 			if (m_Address->IsV4 ())
-				i2p::context.SetStatusSSU2 (status);
+				i2p::context.SetStatus (status);
 			else if (m_Address->IsV6 ())
-				i2p::context.SetStatusV6SSU2 (status);
+				i2p::context.SetStatusV6 (status);
 		}
 	}
 

libi2pd/SSU2Session.h

@@ -35,7 +35,7 @@ namespace transport
 	const int SSU2_PEER_TEST_EXPIRATION_TIMEOUT = 60; // 60 seconds
 	const size_t SSU2_MAX_PACKET_SIZE = 1500;
 	const size_t SSU2_MIN_PACKET_SIZE = 1280;
-	const int SSU2_HANDSHAKE_RESEND_INTERVAL = 1000; // in millseconds
+	const int SSU2_HANDSHAKE_RESEND_INTERVAL = 1000; // in milliseconds
 	const int SSU2_RESEND_INTERVAL = 300; // in milliseconds
 	const int SSU2_MAX_NUM_RESENDS = 5;
 	const int SSU2_INCOMPLETE_MESSAGES_CLEANUP_TIMEOUT = 30; // in seconds

libi2pd/SSUData.cpp

@@ -1,516 +0,0 @@
-/*
-* Copyright (c) 2013-2022, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#include <stdlib.h>
-#include "Log.h"
-#include "Timestamp.h"
-#include "NetDb.hpp"
-#include "SSU.h"
-#include "SSUData.h"
-
-namespace i2p
-{
-namespace transport
-{
-	void IncompleteMessage::AttachNextFragment (const uint8_t * fragment, size_t fragmentSize)
-	{
-		if (msg->len + fragmentSize > msg->maxLen)
-		{
-			LogPrint (eLogWarning, "SSU: I2NP message size ", msg->maxLen, " is not enough");
-			auto newMsg = NewI2NPMessage ();
-			*newMsg = *msg;
-			msg = newMsg;
-		}
-		if (msg->Concat (fragment, fragmentSize) < fragmentSize)
-			LogPrint (eLogError, "SSU: I2NP buffer overflow ", msg->maxLen);
-		nextFragmentNum++;
-	}
-
-	SSUData::SSUData (SSUSession& session):
-		m_Session (session), m_ResendTimer (session.GetService ()),
-		m_MaxPacketSize (session.IsV6 () ? SSU_V6_MAX_PACKET_SIZE : SSU_V4_MAX_PACKET_SIZE),
-		m_PacketSize (m_MaxPacketSize), m_LastMessageReceivedTime (0)
-	{
-	}
-
-	SSUData::~SSUData ()
-	{
-	}
-
-	void SSUData::Start ()
-	{
-	}
-
-	void SSUData::Stop ()
-	{
-		m_ResendTimer.cancel ();
-		m_IncompleteMessages.clear ();
-		m_SentMessages.clear ();
-		m_ReceivedMessages.clear ();
-	}
-
-	void SSUData::AdjustPacketSize (std::shared_ptr<const i2p::data::RouterInfo> remoteRouter)
-	{
-		if (!remoteRouter) return;
-		auto ssuAddress = remoteRouter->GetSSUAddress ();
-		if (ssuAddress && ssuAddress->ssu->mtu)
-		{
-			if (m_Session.IsV6 ())
-				m_PacketSize = ssuAddress->ssu->mtu - IPV6_HEADER_SIZE - UDP_HEADER_SIZE;
-			else
-				m_PacketSize = ssuAddress->ssu->mtu - IPV4_HEADER_SIZE - UDP_HEADER_SIZE;
-			if (m_PacketSize > 0)
-			{
-				// make sure packet size multiple of 16
-				m_PacketSize >>= 4;
-				m_PacketSize <<= 4;
-				if (m_PacketSize > m_MaxPacketSize) m_PacketSize = m_MaxPacketSize;
-				LogPrint (eLogDebug, "SSU: MTU=", ssuAddress->ssu->mtu, " packet size=", m_PacketSize);
-			}
-			else
-			{
-				LogPrint (eLogWarning, "SSU: Unexpected MTU ", ssuAddress->ssu->mtu);
-				m_PacketSize = m_MaxPacketSize;
-			}
-		}
-	}
-
-	void SSUData::UpdatePacketSize (const i2p::data::IdentHash& remoteIdent)
-	{
-		auto routerInfo = i2p::data::netdb.FindRouter (remoteIdent);
-		if (routerInfo)
-			AdjustPacketSize (routerInfo);
-	}
-
-	void SSUData::ProcessSentMessageAck (uint32_t msgID)
-	{
-		auto it = m_SentMessages.find (msgID);
-		if (it != m_SentMessages.end ())
-		{
-			m_SentMessages.erase (it);
-			if (m_SentMessages.empty ())
-				m_ResendTimer.cancel ();
-		}
-	}
-
-	void SSUData::ProcessAcks (uint8_t *& buf, uint8_t flag)
-	{
-		if (flag & DATA_FLAG_EXPLICIT_ACKS_INCLUDED)
-		{
-			// explicit ACKs
-			uint8_t numAcks =*buf;
-			buf++;
-			for (int i = 0; i < numAcks; i++)
-				ProcessSentMessageAck (bufbe32toh (buf+i*4));
-			buf += numAcks*4;
-		}
-		if (flag & DATA_FLAG_ACK_BITFIELDS_INCLUDED)
-		{
-			// explicit ACK bitfields
-			uint8_t numBitfields =*buf;
-			buf++;
-			for (int i = 0; i < numBitfields; i++)
-			{
-				uint32_t msgID = bufbe32toh (buf);
-				buf += 4; // msgID
-				auto it = m_SentMessages.find (msgID);
-				// process individual Ack bitfields
-				bool isNonLast = false;
-				int fragment = 0;
-				do
-				{
-					uint8_t bitfield = *buf;
-					isNonLast = bitfield & 0x80;
-					bitfield &= 0x7F; // clear MSB
-					if (bitfield && it != m_SentMessages.end ())
-					{
-						int numSentFragments = it->second->fragments.size ();
-						// process bits
-						uint8_t mask = 0x01;
-						for (int j = 0; j < 7; j++)
-						{
-							if (bitfield & mask)
-							{
-								if (fragment < numSentFragments)
-									it->second->fragments[fragment] = nullptr;
-							}
-							fragment++;
-							mask <<= 1;
-						}
-					}
-					buf++;
-				}
-				while (isNonLast);
-			}
-		}
-	}
-
-	void SSUData::ProcessFragments (uint8_t * buf)
-	{
-		uint8_t numFragments = *buf; // number of fragments
-		buf++;
-		for (int i = 0; i < numFragments; i++)
-		{
-			uint32_t msgID = bufbe32toh (buf); // message ID
-			buf += 4;
-			uint8_t frag[4] = {0};
-			memcpy (frag + 1, buf, 3);
-			buf += 3;
-			uint32_t fragmentInfo = bufbe32toh (frag); // fragment info
-			uint16_t fragmentSize = fragmentInfo & 0x3FFF; // bits 0 - 13
-			bool isLast = fragmentInfo & 0x010000; // bit 16
-			uint8_t fragmentNum = fragmentInfo >> 17; // bits 23 - 17
-			if (fragmentSize >= SSU_V4_MAX_PACKET_SIZE)
-			{
-				LogPrint (eLogError, "SSU: Fragment size ", fragmentSize, " exceeds max SSU packet size");
-				return;
-			}
-
-			// find message with msgID
-			auto it = m_IncompleteMessages.find (msgID);
-			if (it == m_IncompleteMessages.end ())
-			{
-				// create new message
-				auto msg = NewI2NPShortMessage ();
-				msg->len -= I2NP_SHORT_HEADER_SIZE;
-				it = m_IncompleteMessages.insert (std::make_pair (msgID,
-					m_Session.GetServer ().GetIncompleteMessagesPool ().AcquireShared (std::move (msg)))).first;
-			}
-			auto& incompleteMessage = it->second;
-			// mark fragment as received
-			if (fragmentNum < 64)
-				incompleteMessage->receivedFragmentsBits |= (uint64_t(0x01) << fragmentNum);
-			else
-				LogPrint (eLogWarning, "SSU: Fragment number ", fragmentNum, " exceeds 64");
-
-			// handle current fragment
-			if (fragmentNum == incompleteMessage->nextFragmentNum)
-			{
-				// expected fragment
-				incompleteMessage->AttachNextFragment (buf, fragmentSize);
-				if (!isLast && !incompleteMessage->savedFragments.empty ())
-				{
-					// try saved fragments
-					for (auto it1 = incompleteMessage->savedFragments.begin (); it1 != incompleteMessage->savedFragments.end ();)
-					{
-						auto& savedFragment = *it1;
-						if (savedFragment->fragmentNum == incompleteMessage->nextFragmentNum)
-						{
-							incompleteMessage->AttachNextFragment (savedFragment->buf, savedFragment->len);
-							isLast = savedFragment->isLast;
-							incompleteMessage->savedFragments.erase (it1++);
-						}
-						else
-							break;
-					}
-					if (isLast)
-						LogPrint (eLogDebug, "SSU: Message ", msgID, " complete");
-				}
-			}
-			else
-			{
-				if (fragmentNum < incompleteMessage->nextFragmentNum)
-					// duplicate fragment
-					LogPrint (eLogWarning, "SSU: Duplicate fragment ", (int)fragmentNum, " of message ", msgID, ", ignored");
-				else
-				{
-					// missing fragment
-					LogPrint (eLogWarning, "SSU: Missing fragments from ", (int)incompleteMessage->nextFragmentNum, " to ", fragmentNum - 1, " of message ", msgID);
-					auto savedFragment = m_Session.GetServer ().GetFragmentsPool ().AcquireShared (fragmentNum, buf, fragmentSize, isLast);
-					if (incompleteMessage->savedFragments.insert (savedFragment).second)
-						incompleteMessage->lastFragmentInsertTime = i2p::util::GetSecondsSinceEpoch ();
-					else
-						LogPrint (eLogWarning, "SSU: Fragment ", (int)fragmentNum, " of message ", msgID, " already saved");
-				}
-				isLast = false;
-			}
-
-			if (isLast)
-			{
-				// delete incomplete message
-				auto msg = incompleteMessage->msg;
-				incompleteMessage->msg = nullptr;
-				m_IncompleteMessages.erase (msgID);
-				// process message
-				SendMsgAck (msgID);
-				msg->FromSSU (msgID);
-				if (m_Session.GetState () == eSessionStateEstablished)
-				{
-					if (!m_ReceivedMessages.count (msgID))
-					{
-						m_LastMessageReceivedTime = i2p::util::GetSecondsSinceEpoch ();
-						m_ReceivedMessages.emplace (msgID, m_LastMessageReceivedTime);
-						if (!msg->IsExpired ())
-						{
-							m_Handler.PutNextMessage (std::move (msg));
-						}
-						else
-							LogPrint (eLogDebug, "SSU: message expired");
-					}
-					else
-						LogPrint (eLogWarning, "SSU: Message ", msgID, " already received");
-				}
-				else
-				{
-					// we expect DeliveryStatus
-					if (msg->GetTypeID () == eI2NPDeliveryStatus)
-					{
-						LogPrint (eLogDebug, "SSU: session established");
-						m_Session.Established ();
-					}
-					else
-						LogPrint (eLogError, "SSU: unexpected message ", (int)msg->GetTypeID ());
-				}
-			}
-			else
-				SendFragmentAck (msgID, incompleteMessage->receivedFragmentsBits);
-			buf += fragmentSize;
-		}
-	}
-
-	void SSUData::FlushReceivedMessage ()
-	{
-		m_Handler.Flush ();
-	}
-
-	void SSUData::ProcessMessage (uint8_t * buf, size_t len)
-	{
-		//uint8_t * start = buf;
-		uint8_t flag = *buf;
-		buf++;
-		LogPrint (eLogDebug, "SSU: Process data, flags=", (int)flag, ", len=", len);
-		// process acks if presented
-		if (flag & (DATA_FLAG_ACK_BITFIELDS_INCLUDED | DATA_FLAG_EXPLICIT_ACKS_INCLUDED))
-			ProcessAcks (buf, flag);
-		// extended data if presented
-		if (flag & DATA_FLAG_EXTENDED_DATA_INCLUDED)
-		{
-			uint8_t extendedDataSize = *buf;
-			buf++; // size
-			LogPrint (eLogDebug, "SSU: extended data of ", extendedDataSize, " bytes present");
-			buf += extendedDataSize;
-		}
-		// process data
-		ProcessFragments (buf);
-	}
-
-	void SSUData::Send (std::shared_ptr<i2p::I2NPMessage> msg)
-	{
-		uint32_t msgID = msg->ToSSU ();
-		if (m_SentMessages.find (msgID) != m_SentMessages.end())
-		{
-			LogPrint (eLogWarning, "SSU: message ", msgID, " already sent");
-			return;
-		}
-		if (m_SentMessages.empty ()) // schedule resend at first message only
-			ScheduleResend ();
-
-		auto ret = m_SentMessages.emplace (msgID, m_Session.GetServer ().GetSentMessagesPool ().AcquireShared ());
-		auto& sentMessage = ret.first->second;
-		if (ret.second)
-		{
-			sentMessage->nextResendTime = i2p::util::GetSecondsSinceEpoch () + RESEND_INTERVAL;
-			sentMessage->numResends = 0;
-		}
-		auto& fragments = sentMessage->fragments;
-		size_t payloadSize = m_PacketSize - sizeof (SSUHeader) - 9; // 9 = flag + #frg(1) + messageID(4) + frag info (3)
-		size_t len = msg->GetLength ();
-		uint8_t * msgBuf = msg->GetSSUHeader ();
-
-		uint32_t fragmentNum = 0;
-		while (len > 0 && fragmentNum <= 127)
-		{
-			auto fragment = m_Session.GetServer ().GetFragmentsPool ().AcquireShared ();
-			fragment->fragmentNum = fragmentNum;
-			uint8_t	* payload = fragment->buf + sizeof (SSUHeader);
-			*payload = DATA_FLAG_WANT_REPLY; // for compatibility
-			payload++;
-			*payload = 1; // always 1 message fragment per message
-			payload++;
-			htobe32buf (payload, msgID);
-			payload += 4;
-			bool isLast = (len <= payloadSize) || fragmentNum == 127; // 127 fragments max
-			size_t size = isLast ? len : payloadSize;
-			uint32_t fragmentInfo = (fragmentNum << 17);
-			if (isLast)
-				fragmentInfo |= 0x010000;
-
-			fragmentInfo |= size;
-			fragmentInfo = htobe32 (fragmentInfo);
-			memcpy (payload, (uint8_t *)(&fragmentInfo) + 1, 3);
-			payload += 3;
-			memcpy (payload, msgBuf, size);
-
-			size += payload - fragment->buf;
-			uint8_t rem = size & 0x0F;
-			if (rem) // make sure 16 bytes boundary
-			{
-				auto padding = 16 - rem;
-				memset (fragment->buf + size, 0, padding);
-				size += padding;
-			}
-			fragment->len = size;
-			fragments.push_back (fragment);
-
-			// encrypt message with session key
-			uint8_t buf[SSU_V4_MAX_PACKET_SIZE + 18];
-			m_Session.FillHeaderAndEncrypt (PAYLOAD_TYPE_DATA, fragment->buf, size, buf);
-			try
-			{
-				m_Session.Send (buf, size);
-			}
-			catch (boost::system::system_error& ec)
-			{
-				LogPrint (eLogWarning, "SSU: Can't send data fragment ", ec.what ());
-			}
-			if (!isLast)
-			{
-				len -= payloadSize;
-				msgBuf += payloadSize;
-			}
-			else
-				len = 0;
-			fragmentNum++;
-		}
-	}
-
-	void SSUData::SendMsgAck (uint32_t msgID)
-	{
-		uint8_t buf[48 + 18] = {0}; // actual length is 44 = 37 + 7 but pad it to multiple of 16
-		uint8_t * payload = buf + sizeof (SSUHeader);
-		*payload = DATA_FLAG_EXPLICIT_ACKS_INCLUDED; // flag
-		payload++;
-		*payload = 1; // number of ACKs
-		payload++;
-		htobe32buf (payload, msgID); // msgID
-		payload += 4;
-		*payload = 0; // number of fragments
-
-		// encrypt message with session key
-		m_Session.FillHeaderAndEncrypt (PAYLOAD_TYPE_DATA, buf, 48);
-		m_Session.Send (buf, 48);
-	}
-
-	void SSUData::SendFragmentAck (uint32_t msgID, uint64_t bits)
-	{
-		if (!bits) return;
-		uint8_t buf[64 + 18] = {0};
-		uint8_t * payload = buf + sizeof (SSUHeader);
-		*payload = DATA_FLAG_ACK_BITFIELDS_INCLUDED; // flag
-		payload++;
-		*payload = 1; // number of ACK bitfields
-		payload++;
-		// one ack
-		*(uint32_t *)(payload) = htobe32 (msgID); // msgID
-		payload += 4;
-		size_t len = 0;
-		while (bits)
-		{
-			*payload = (bits & 0x7F); // next 7 bits
-			bits >>= 7;
-			if (bits) *payload &= 0x80; // 0x80 means non-last
-			payload++; len++;
-		}
-		*payload = 0; // number of fragments
-		len = (len <= 4) ? 48 : 64; // 48 = 37 + 7 + 4
-		// encrypt message with session key
-		m_Session.FillHeaderAndEncrypt (PAYLOAD_TYPE_DATA, buf, len);
-		m_Session.Send (buf, len);
-	}
-
-	void SSUData::ScheduleResend()
-	{
-		m_ResendTimer.cancel ();
-		m_ResendTimer.expires_from_now (boost::posix_time::seconds(RESEND_INTERVAL));
-		auto s = m_Session.shared_from_this();
-		m_ResendTimer.async_wait ([s](const boost::system::error_code& ecode)
-			{ s->m_Data.HandleResendTimer (ecode); });
-	}
-
-	void SSUData::HandleResendTimer (const boost::system::error_code& ecode)
-	{
-		if (ecode != boost::asio::error::operation_aborted)
-		{
-			uint8_t buf[SSU_V4_MAX_PACKET_SIZE + 18];
-			uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-			int numResent = 0;
-			for (auto it = m_SentMessages.begin (); it != m_SentMessages.end ();)
-			{
-				if (ts >= it->second->nextResendTime)
-				{
-					if (it->second->numResends < MAX_NUM_RESENDS)
-					{
-						for (auto& f: it->second->fragments)
-							if (f)
-							{
-								try
-								{
-									m_Session.FillHeaderAndEncrypt (PAYLOAD_TYPE_DATA, f->buf, f->len, buf);
-									m_Session.Send (buf, f->len); // resend
-									numResent++;
-								}
-								catch (boost::system::system_error& ec)
-								{
-									LogPrint (eLogWarning, "SSU: Can't resend message ", it->first, " data fragment: ", ec.what ());
-								}
-							}
-
-						it->second->numResends++;
-						it->second->nextResendTime += it->second->numResends*RESEND_INTERVAL;
-						++it;
-					}
-					else
-					{
-						LogPrint (eLogInfo, "SSU: message ", it->first, " has not been ACKed after ", MAX_NUM_RESENDS, " attempts, deleted");
-						it = m_SentMessages.erase (it);
-					}
-				}
-				else
-					++it;
-			}
-			if (m_SentMessages.empty ()) return; // nothing to resend
-			if (numResent < MAX_OUTGOING_WINDOW_SIZE)
-				ScheduleResend ();
-			else
-			{
-				LogPrint (eLogError, "SSU: resend window exceeds max size. Session terminated");
-				m_Session.Close ();
-			}
-		}
-	}
-
-	void SSUData::CleanUp (uint64_t ts)
-	{
-		for (auto it = m_IncompleteMessages.begin (); it != m_IncompleteMessages.end ();)
-		{
-			if (ts > it->second->lastFragmentInsertTime + INCOMPLETE_MESSAGES_CLEANUP_TIMEOUT)
-			{
-				LogPrint (eLogWarning, "SSU: message ", it->first, " was not completed in ", INCOMPLETE_MESSAGES_CLEANUP_TIMEOUT, " seconds, deleted");
-				it = m_IncompleteMessages.erase (it);
-			}
-			else
-				++it;
-		}
-
-		if (m_ReceivedMessages.size () > MAX_NUM_RECEIVED_MESSAGES || ts > m_LastMessageReceivedTime + DECAY_INTERVAL)
-			// decay
-			m_ReceivedMessages.clear ();
-		else
-		{
-			// delete old received messages
-			for (auto it = m_ReceivedMessages.begin (); it != m_ReceivedMessages.end ();)
-			{
-				if (ts > it->second + RECEIVED_MESSAGES_CLEANUP_TIMEOUT)
-					it = m_ReceivedMessages.erase (it);
-				else
-					++it;
-			}
-		}
-	}
-}
-}

libi2pd/SSUData.h

@@ -1,131 +0,0 @@
-/*
-* Copyright (c) 2013-2022, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#ifndef SSU_DATA_H__
-#define SSU_DATA_H__
-
-#include <inttypes.h>
-#include <string.h>
-#include <vector>
-#include <map>
-#include <unordered_map>
-#include <memory>
-#include <boost/asio.hpp>
-#include "I2NPProtocol.h"
-#include "Identity.h"
-#include "RouterInfo.h"
-#include "TransportSession.h"
-
-namespace i2p
-{
-namespace transport
-{
-	const size_t SSU_MTU_V4 = 1484;
-	const size_t SSU_MTU_V6 = 1488;
-	const size_t SSU_V4_MAX_PACKET_SIZE = SSU_MTU_V4 - IPV4_HEADER_SIZE - UDP_HEADER_SIZE; // 1456
-	const size_t SSU_V6_MAX_PACKET_SIZE = SSU_MTU_V6 - IPV6_HEADER_SIZE - UDP_HEADER_SIZE; // 1440
-	const int RESEND_INTERVAL = 3; // in seconds
-	const int MAX_NUM_RESENDS = 5;
-	const int DECAY_INTERVAL = 20; // in seconds
-	const int INCOMPLETE_MESSAGES_CLEANUP_TIMEOUT = 30; // in seconds
-	const int RECEIVED_MESSAGES_CLEANUP_TIMEOUT = 40; // in seconds
-	const unsigned int MAX_NUM_RECEIVED_MESSAGES = 1000; // how many msgID we store for duplicates check
-	const int MAX_OUTGOING_WINDOW_SIZE = 200; // how many unacked message we can store
-	// data flags
-	const uint8_t DATA_FLAG_EXTENDED_DATA_INCLUDED = 0x02;
-	const uint8_t DATA_FLAG_WANT_REPLY = 0x04;
-	const uint8_t DATA_FLAG_REQUEST_PREVIOUS_ACKS = 0x08;
-	const uint8_t DATA_FLAG_EXPLICIT_CONGESTION_NOTIFICATION = 0x10;
-	const uint8_t DATA_FLAG_ACK_BITFIELDS_INCLUDED = 0x40;
-	const uint8_t DATA_FLAG_EXPLICIT_ACKS_INCLUDED = 0x80;
-
-	struct Fragment
-	{
-		int fragmentNum;
-		size_t len;
-		bool isLast;
-		uint8_t buf[SSU_V4_MAX_PACKET_SIZE + 18]; // use biggest
-
-		Fragment () = default;
-		Fragment (int n, const uint8_t * b, int l, bool last):
-			fragmentNum (n), len (l), isLast (last) { memcpy (buf, b, len); };
-	};
-
-	struct FragmentCmp
-	{
-		bool operator() (const std::shared_ptr<Fragment>& f1, const std::shared_ptr<Fragment>& f2) const
-		{
-			return f1->fragmentNum < f2->fragmentNum;
-		};
-	};
-
-	struct IncompleteMessage
-	{
-		std::shared_ptr<I2NPMessage> msg;
-		int nextFragmentNum;
-		uint32_t lastFragmentInsertTime; // in seconds
-		uint64_t receivedFragmentsBits;
-		std::set<std::shared_ptr<Fragment>, FragmentCmp> savedFragments;
-
-		IncompleteMessage (std::shared_ptr<I2NPMessage>&& m): msg (m), nextFragmentNum (0),
-			lastFragmentInsertTime (0), receivedFragmentsBits (0) {};
-		void AttachNextFragment (const uint8_t * fragment, size_t fragmentSize);
-	};
-
-	struct SentMessage
-	{
-		std::vector<std::shared_ptr<Fragment> > fragments;
-		uint32_t nextResendTime; // in seconds
-		int numResends;
-	};
-
-	class SSUSession;
-	class SSUData
-	{
-		public:
-
-			SSUData (SSUSession& session);
-			~SSUData ();
-
-			void Start ();
-			void Stop ();
-			void CleanUp (uint64_t ts);
-
-			void ProcessMessage (uint8_t * buf, size_t len);
-			void FlushReceivedMessage ();
-			void Send (std::shared_ptr<i2p::I2NPMessage> msg);
-
-			void AdjustPacketSize (std::shared_ptr<const i2p::data::RouterInfo> remoteRouter);
-			void UpdatePacketSize (const i2p::data::IdentHash& remoteIdent);
-
-		private:
-
-			void SendMsgAck (uint32_t msgID);
-			void SendFragmentAck (uint32_t msgID, uint64_t bits);
-			void ProcessAcks (uint8_t *& buf, uint8_t flag);
-			void ProcessFragments (uint8_t * buf);
-			void ProcessSentMessageAck (uint32_t msgID);
-
-			void ScheduleResend ();
-			void HandleResendTimer (const boost::system::error_code& ecode);
-
-		private:
-
-			SSUSession& m_Session;
-			std::map<uint32_t, std::shared_ptr<IncompleteMessage> > m_IncompleteMessages;
-			std::map<uint32_t, std::shared_ptr<SentMessage> > m_SentMessages;
-			std::unordered_map<uint32_t, uint64_t> m_ReceivedMessages; // msgID -> timestamp in seconds
-			boost::asio::deadline_timer m_ResendTimer;
-			int m_MaxPacketSize, m_PacketSize;
-			i2p::I2NPMessagesHandler m_Handler;
-			uint32_t m_LastMessageReceivedTime; // in second
-	};
-}
-}
-
-#endif

libi2pd/SSUSession.h

@@ -1,177 +0,0 @@
-/*
-* Copyright (c) 2013-2022, The PurpleI2P Project
-*
-* This file is part of Purple i2pd project and licensed under BSD3
-*
-* See full license text in LICENSE file at top of project tree
-*/
-
-#ifndef SSU_SESSION_H__
-#define SSU_SESSION_H__
-
-#include <inttypes.h>
-#include <set>
-#include <memory>
-#include "Crypto.h"
-#include "I2NPProtocol.h"
-#include "TransportSession.h"
-#include "SSUData.h"
-
-namespace i2p
-{
-namespace transport
-{
-	const uint8_t SSU_HEADER_EXTENDED_OPTIONS_INCLUDED = 0x04;
-	struct SSUHeader
-	{
-		uint8_t mac[16];
-		uint8_t iv[16];
-		uint8_t flag;
-		uint8_t time[4];
-
-		uint8_t GetPayloadType () const { return flag >> 4; };
-		bool IsExtendedOptions () const { return flag & SSU_HEADER_EXTENDED_OPTIONS_INCLUDED; };
-	};
-
-	const int SSU_CONNECT_TIMEOUT = 5; // 5 seconds
-	const int SSU_TERMINATION_TIMEOUT = 330; // 5.5 minutes
-	const int SSU_CLOCK_SKEW = 60; // in seconds
-	const int SSU_CLOCK_THRESHOLD = 15; // in seconds, if more we should adjust
-	const size_t SSU_MAX_I2NP_MESSAGE_SIZE = 32768;
-
-	// payload types (4 bits)
-	const uint8_t PAYLOAD_TYPE_SESSION_REQUEST = 0;
-	const uint8_t PAYLOAD_TYPE_SESSION_CREATED = 1;
-	const uint8_t PAYLOAD_TYPE_SESSION_CONFIRMED = 2;
-	const uint8_t PAYLOAD_TYPE_RELAY_REQUEST = 3;
-	const uint8_t PAYLOAD_TYPE_RELAY_RESPONSE = 4;
-	const uint8_t PAYLOAD_TYPE_RELAY_INTRO = 5;
-	const uint8_t PAYLOAD_TYPE_DATA = 6;
-	const uint8_t PAYLOAD_TYPE_PEER_TEST = 7;
-	const uint8_t PAYLOAD_TYPE_SESSION_DESTROYED = 8;
-
-	// extended options
-	const uint16_t EXTENDED_OPTIONS_FLAG_REQUEST_RELAY_TAG = 0x0001;
-
-	enum SessionState
-	{
-		eSessionStateUnknown,
-		eSessionStateIntroduced,
-		eSessionStateEstablished,
-		eSessionStateClosed,
-		eSessionStateFailed
-	};
-
-	enum PeerTestParticipant
-	{
-		ePeerTestParticipantUnknown = 0,
-		ePeerTestParticipantAlice1,
-		ePeerTestParticipantAlice2,
-		ePeerTestParticipantBob,
-		ePeerTestParticipantCharlie
-	};
-
-	class SSUServer;
-	class SSUSession: public TransportSession, public std::enable_shared_from_this<SSUSession>
-	{
-		public:
-
-			SSUSession (SSUServer& server, boost::asio::ip::udp::endpoint& remoteEndpoint,
-				std::shared_ptr<const i2p::data::RouterInfo> router = nullptr, bool peerTest = false);
-			void ProcessNextMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
-			~SSUSession ();
-
-			void Connect ();
-			void WaitForConnect ();
-			void Introduce (const i2p::data::RouterInfo::Introducer& introducer,
-				std::shared_ptr<const i2p::data::RouterInfo> to); // Alice to Charlie
-			void WaitForIntroduction ();
-			void Close ();
-			void Done ();
-			void Failed ();
-			const boost::asio::ip::udp::endpoint& GetRemoteEndpoint () { return m_RemoteEndpoint; };
-			SSUServer& GetServer () { return m_Server; };
-
-			bool IsV6 () const { return m_RemoteEndpoint.address ().is_v6 (); };
-			void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs);
-			void SendPeerTest (); // Alice
-
-			SessionState GetState () const { return m_State; };
-			size_t GetNumSentBytes () const { return m_NumSentBytes; };
-			size_t GetNumReceivedBytes () const { return m_NumReceivedBytes; };
-
-			void SendKeepAlive ();
-			uint32_t GetRelayTag () const { return m_RelayTag; };
-			const i2p::data::RouterInfo::IntroKey& GetIntroKey () const { return m_IntroKey; };
-
-			void FlushData ();
-			void CleanUp (uint64_t ts);
-
-		private:
-
-			boost::asio::io_service& GetService ();
-			void CreateAESandMacKey (const uint8_t * pubKey);
-			size_t GetSSUHeaderSize (const uint8_t * buf) const;
-			void PostI2NPMessages (std::vector<std::shared_ptr<I2NPMessage> > msgs);
-			void ProcessMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint); // call for established session
-			void ProcessSessionRequest (const uint8_t * buf, size_t len);
-			void SendSessionRequest ();
-			void SendRelayRequest (const i2p::data::RouterInfo::Introducer& introducer, uint32_t nonce);
-			void ProcessSessionCreated (uint8_t * buf, size_t len);
-			void SendSessionCreated (const uint8_t * x, bool sendRelayTag = true);
-			void ProcessSessionConfirmed (const uint8_t * buf, size_t len);
-			void SendSessionConfirmed (const uint8_t * y, const uint8_t * ourAddress, size_t ourAddressLen);
-			void ProcessRelayRequest (const uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& from);
-			void SendRelayResponse (uint32_t nonce, const boost::asio::ip::udp::endpoint& from,
-				const uint8_t * introKey, const boost::asio::ip::udp::endpoint& to);
-			void SendRelayIntro (std::shared_ptr<SSUSession> session, const boost::asio::ip::udp::endpoint& from);
-			void ProcessRelayResponse (const uint8_t * buf, size_t len);
-			void ProcessRelayIntro (const uint8_t * buf, size_t len);
-			void Established ();
-			void ScheduleConnectTimer ();
-			void HandleConnectTimer (const boost::system::error_code& ecode);
-			void ProcessPeerTest (const uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
-			void SendPeerTest (uint32_t nonce, const boost::asio::ip::address& address, uint16_t port, const uint8_t * introKey, bool toAddress = true, bool sendAddress = true);
-			void ProcessData (uint8_t * buf, size_t len);
-			void SendSessionDestroyed ();
-			void Send (uint8_t type, const uint8_t * payload, size_t len); // with session key
-			void Send (const uint8_t * buf, size_t size);
-
-			void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, const i2p::crypto::AESKey& aesKey,
-				const uint8_t * iv, const i2p::crypto::MACKey& macKey, uint8_t flag = 0);
-			void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len); // with session key
-			void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * in, size_t len, uint8_t * out); // with session key
-			void Decrypt (uint8_t * buf, size_t len, const i2p::crypto::AESKey& aesKey);
-			void DecryptSessionKey (uint8_t * buf, size_t len);
-			bool Validate (uint8_t * buf, size_t len, const i2p::crypto::MACKey& macKey);
-
-			void Reset ();
-
-			static size_t ExtractIPAddressAndPort (const uint8_t * buf, size_t len, boost::asio::ip::address& ip, uint16_t& port); // returns actual buf size
-
-		private:
-
-			friend class SSUData; // TODO: change in later
-			SSUServer& m_Server;
-			const boost::asio::ip::udp::endpoint m_RemoteEndpoint;
-			boost::asio::deadline_timer m_ConnectTimer;
-			bool m_IsPeerTest;
-			SessionState m_State;
-			bool m_IsSessionKey;
-			uint32_t m_RelayTag; // received from peer
-			uint32_t m_SentRelayTag; // sent by us
-			i2p::crypto::CBCEncryption m_SessionKeyEncryption;
-			i2p::crypto::CBCDecryption m_SessionKeyDecryption;
-			i2p::crypto::AESKey m_SessionKey;
-			i2p::crypto::MACKey m_MacKey;
-			i2p::data::RouterInfo::IntroKey m_IntroKey;
-			SSUData m_Data;
-			bool m_IsDataReceived;
-			std::unique_ptr<SignedData> m_SignedData; // we need it for SessionConfirmed only
-			std::map<uint32_t, std::pair <std::shared_ptr<const i2p::data::RouterInfo>, uint64_t > > m_RelayRequests; // nonce->(Charlie, timestamp)
-			std::shared_ptr<i2p::crypto::DHKeys> m_DHKeysPair; // X - for client and Y - for server
-	};
-}
-}
-
-#endif

libi2pd/Timestamp.h

@@ -25,7 +25,7 @@ namespace util
 	uint32_t GetHoursSinceEpoch ();
 
 	void GetCurrentDate (char * date); // returns date as YYYYMMDD string, 9 bytes
-	void GetDateString (uint64_t timestamp, char * date); // timestap is seconds since epoch, returns date as YYYYMMDD string, 9 bytes
+	void GetDateString (uint64_t timestamp, char * date); // timestamp is seconds since epoch, returns date as YYYYMMDD string, 9 bytes
 	void AdjustTimeOffset (int64_t offset); // in seconds from current
 
 	class NTPTimeSync

libi2pd/Transports.cpp

@@ -136,7 +136,7 @@ namespace transport
 	Transports::Transports ():
 		m_IsOnline (true), m_IsRunning (false), m_IsNAT (true), m_CheckReserved(true), m_Thread (nullptr),
 		m_Service (nullptr), m_Work (nullptr), m_PeerCleanupTimer (nullptr), m_PeerTestTimer (nullptr),
-		m_SSUServer (nullptr), m_SSU2Server (nullptr), m_NTCP2Server (nullptr),
+		m_SSU2Server (nullptr), m_NTCP2Server (nullptr),
 		m_X25519KeysPairSupplier (15), // 15 pre-generated keys
 		m_TotalSentBytes(0), m_TotalReceivedBytes(0), m_TotalTransitTransmittedBytes (0),
 		m_InBandwidth (0), m_OutBandwidth (0), m_TransitBandwidth(0),
@@ -157,7 +157,7 @@ namespace transport
 		}
 	}
 
-	void Transports::Start (bool enableNTCP2, bool enableSSU, bool enableSSU2)
+	void Transports::Start (bool enableNTCP2, bool enableSSU2)
 	{
 		if (!m_Service)
 		{
@@ -205,22 +205,6 @@ namespace transport
 				m_NTCP2Server = new NTCP2Server ();
 		}
 
-		// create SSU server
-		int ssuPort = 0;
-		if (enableSSU)
-		{
-			auto& addresses = context.GetRouterInfo ().GetAddresses ();
-			for (const auto& address: addresses)
-			{
-				if (!address) continue;
-				if (address->transportStyle == RouterInfo::eTransportSSU)
-				{
-					ssuPort = address->port;
-					m_SSUServer = new SSUServer (address->port);
-					break;
-				}
-			}
-		}
 		// create SSU2 server
 		if (enableSSU2) 
 		{	
@@ -255,7 +239,6 @@ namespace transport
 				if (!ec)
 				{
 					if (m_NTCP2Server) m_NTCP2Server->SetLocalAddress (addr);
-					if (m_SSUServer) m_SSUServer->SetLocalAddress (addr);
 					if (m_SSU2Server) m_SSU2Server->SetLocalAddress (addr);
 				}
 			}
@@ -282,7 +265,6 @@ namespace transport
 				if (!ec)
 				{
 					if (m_NTCP2Server) m_NTCP2Server->SetLocalAddress (addr);
-					if (m_SSUServer) m_SSUServer->SetLocalAddress (addr);
 					if (m_SSU2Server) m_SSU2Server->SetLocalAddress (addr);
 				}
 			}
@@ -315,22 +297,7 @@ namespace transport
 		// start servers
 		if (m_NTCP2Server) m_NTCP2Server->Start ();
 		if (m_SSU2Server) m_SSU2Server->Start ();
-		if (m_SSUServer)
+		if (m_SSU2Server) DetectExternalIP ();
-		{
-			LogPrint (eLogInfo, "Transports: Start listening UDP port ", ssuPort);
-			try
-			{
-				m_SSUServer->Start ();
-			}
-			catch (std::exception& ex )
-			{
-				LogPrint(eLogError, "Transports: Failed to bind to UDP port", ssuPort);
-				m_SSUServer->Stop ();
-				delete m_SSUServer;
-				m_SSUServer = nullptr;
-			}
-		}
-		if (m_SSUServer || m_SSU2Server) DetectExternalIP ();
 
 		m_PeerCleanupTimer->expires_from_now (boost::posix_time::seconds(5*SESSION_CREATION_TIMEOUT));
 		m_PeerCleanupTimer->async_wait (std::bind (&Transports::HandlePeerCleanupTimer, this, std::placeholders::_1));
@@ -347,12 +314,6 @@ namespace transport
 		if (m_PeerCleanupTimer) m_PeerCleanupTimer->cancel ();
 		if (m_PeerTestTimer) m_PeerTestTimer->cancel ();
 		m_Peers.clear ();
-		if (m_SSUServer)
-		{
-			m_SSUServer->Stop ();
-			delete m_SSUServer;
-			m_SSUServer = nullptr;
-		}
 
 		if (m_SSU2Server)
 		{
@@ -538,21 +499,6 @@ namespace transport
 						}
 						break;
 					}
-					case i2p::data::RouterInfo::eSSUV4:
-					case i2p::data::RouterInfo::eSSUV6:
-					{
-						if (!m_SSUServer) continue;
-						std::shared_ptr<const RouterInfo::Address> address = (tr == i2p::data::RouterInfo::eSSUV6) ?
-							peer.router->GetSSUV6Address () : peer.router->GetSSUAddress (true);
-						if (address && m_CheckReserved && i2p::util::net::IsInReservedRange(address->host))
-							address = nullptr;
-						if (address && address->IsReachableSSU ())
-						{
-							if (m_SSUServer->CreateSession (peer.router, address))
-								return true;
-						}
-						break;
-					}
 					case i2p::data::RouterInfo::eNTCP2V6Mesh:
 					{
 						if (!m_NTCP2Server) continue;
@@ -595,9 +541,7 @@ namespace transport
 			i2p::data::RouterInfo::eNTCP2V4,
 			i2p::data::RouterInfo::eSSU2V6,
 			i2p::data::RouterInfo::eSSU2V4,
-			i2p::data::RouterInfo::eNTCP2V6Mesh,
+			i2p::data::RouterInfo::eNTCP2V6Mesh
-			i2p::data::RouterInfo::eSSUV6,
-			i2p::data::RouterInfo::eSSUV4
 		},
 			ssu2Priority =
 		{
@@ -605,9 +549,7 @@ namespace transport
 			i2p::data::RouterInfo::eSSU2V4,
 			i2p::data::RouterInfo::eNTCP2V6,
 			i2p::data::RouterInfo::eNTCP2V4,
-			i2p::data::RouterInfo::eNTCP2V6Mesh,
+			i2p::data::RouterInfo::eNTCP2V6Mesh
-			i2p::data::RouterInfo::eSSUV6,
-			i2p::data::RouterInfo::eSSUV4
 		};
 		if (!peer.router) return;
 		auto compatibleTransports = context.GetRouterInfo ().GetCompatibleTransports (false) &
@@ -654,7 +596,7 @@ namespace transport
 			i2p::context.SetStatus (eRouterStatusOK);
 			return;
 		}
-		if (m_SSUServer || m_SSU2Server)
+		if (m_SSU2Server)
 			PeerTest ();
 		else
 			LogPrint (eLogWarning, "Transports: Can't detect external IP. SSU or SSU2 is not available");
@@ -662,103 +604,44 @@ namespace transport
 
 	void Transports::PeerTest (bool ipv4, bool ipv6)
 	{
-		if (RoutesRestricted() || (!m_SSUServer && !m_SSU2Server)) return;
+		if (RoutesRestricted() || !m_SSU2Server || m_SSU2Server->UsesProxy ()) return;
 		if (ipv4 && i2p::context.SupportsV4 ())
 		{
 			LogPrint (eLogInfo, "Transports: Started peer test IPv4");
 			std::set<i2p::data::IdentHash> excluded;
 			excluded.insert (i2p::context.GetIdentHash ()); // don't pick own router
-			if (m_SSUServer)
+			for (int i = 0; i < 5; i++)
-			{
-				bool statusChanged = false;
-				for (int i = 0; i < 5; i++)
-				{
-					auto router = i2p::data::netdb.GetRandomPeerTestRouter (true, excluded); // v4
-					if (router)
-					{
-						auto addr = router->GetSSUAddress (true); // ipv4
-						if (addr && !i2p::util::net::IsInReservedRange(addr->host))
-						{
-							if (!statusChanged)
-							{
-								statusChanged = true;
-								i2p::context.SetStatus (eRouterStatusTesting); // first time only
-							}
-							m_SSUServer->CreateSession (router, addr, true); // peer test v4
-						}
-						excluded.insert (router->GetIdentHash ());
-					}
-				}
-				if (!statusChanged)
-					LogPrint (eLogWarning, "Transports: Can't find routers for peer test IPv4");
-			}
-			// SSU2
-			if (m_SSU2Server && !m_SSU2Server->UsesProxy ())
 			{
-				excluded.clear ();
+				auto router = i2p::data::netdb.GetRandomSSU2PeerTestRouter (true, excluded); // v4
-				excluded.insert (i2p::context.GetIdentHash ());
+				if (router)
-				int numTests = m_SSUServer ? 3 : 5;
-				for (int i = 0; i < numTests; i++)
 				{
-					auto router = i2p::data::netdb.GetRandomSSU2PeerTestRouter (true, excluded); // v4
+					if (i2p::context.GetStatus () != eRouterStatusTesting)
-					if (router)
+						i2p::context.SetStatus (eRouterStatusTesting);
-					{
+					m_SSU2Server->StartPeerTest (router, true);
-						if (i2p::context.GetStatus () != eRouterStatusTesting)
+					excluded.insert (router->GetIdentHash ());
-							i2p::context.SetStatusSSU2 (eRouterStatusTesting);
-						m_SSU2Server->StartPeerTest (router, true);
-						excluded.insert (router->GetIdentHash ());
-					}
 				}
 			}
+			if (excluded.size () <= 1)
+				LogPrint (eLogWarning, "Transports: Can't find routers for peer test IPv4");
 		}
 		if (ipv6 && i2p::context.SupportsV6 ())
 		{
 			LogPrint (eLogInfo, "Transports: Started peer test IPv6");
 			std::set<i2p::data::IdentHash> excluded;
 			excluded.insert (i2p::context.GetIdentHash ()); // don't pick own router
-			if (m_SSUServer)
+			for (int i = 0; i < 5; i++)
 			{
-				bool statusChanged = false;
+				auto router = i2p::data::netdb.GetRandomSSU2PeerTestRouter (false, excluded); // v6
-				for (int i = 0; i < 5; i++)
+				if (router)
 				{
-					auto router = i2p::data::netdb.GetRandomPeerTestRouter (false, excluded); // v6
+					if (i2p::context.GetStatusV6 () != eRouterStatusTesting)
-					if (router)
+						i2p::context.SetStatusV6 (eRouterStatusTesting);
-					{
+					m_SSU2Server->StartPeerTest (router, false);
-						auto addr = router->GetSSUV6Address ();
+					excluded.insert (router->GetIdentHash ());
-						if (addr && !i2p::util::net::IsInReservedRange(addr->host))
-						{
-							if (!statusChanged)
-							{
-								statusChanged = true;
-								i2p::context.SetStatusV6 (eRouterStatusTesting); // first time only
-							}
-							m_SSUServer->CreateSession (router, addr, true); // peer test v6
-						}
-						excluded.insert (router->GetIdentHash ());
-					}
-				}
-				if (!statusChanged)
-					LogPrint (eLogWarning, "Transports: Can't find routers for peer test IPv6");
-			}
-
-			// SSU2
-			if (m_SSU2Server && !m_SSU2Server->UsesProxy ())
-			{
-				excluded.clear ();
-				excluded.insert (i2p::context.GetIdentHash ());
-				int numTests = m_SSUServer ? 3 : 5;
-				for (int i = 0; i < numTests; i++)
-				{
-					auto router = i2p::data::netdb.GetRandomSSU2PeerTestRouter (false, excluded); // v6
-					if (router)
-					{
-						if (i2p::context.GetStatusV6 () != eRouterStatusTesting)
-							i2p::context.SetStatusV6SSU2 (eRouterStatusTesting);
-						m_SSU2Server->StartPeerTest (router, false);
-						excluded.insert (router->GetIdentHash ());
-					}
 				}
 			}
+			if (excluded.size () <= 1)
+				LogPrint (eLogWarning, "Transports: Can't find routers for peer test IPv6");
 		}
 	}
 
@@ -1075,7 +958,6 @@ namespace transport
 		i2p::context.SetSupportsV4 (ipv4);
 		i2p::context.SetSupportsMesh (ygg, yggaddr);
 
-		i2p::context.RemoveNTCPAddress (!ipv6); // TODO: remove later
 		bool ntcp2; i2p::config::GetOption("ntcp2.enabled", ntcp2);
 		if (ntcp2)
 		{
@@ -1108,15 +990,13 @@ namespace transport
 			if (!ipv4 && !ipv6)
 				i2p::context.SetStatus (eRouterStatusMesh);
 		}
-		bool ssu; i2p::config::GetOption("ssu", ssu);
-		if (!ssu) i2p::context.RemoveSSUAddress (); // TODO: remove later
 		bool ssu2; i2p::config::GetOption("ssu2.enabled", ssu2);
 		if (ssu2 && i2p::config::IsDefault ("ssu2.enabled") && !ipv4 && !ipv6)
 			ssu2 = false; // don't enable ssu2 for yggdrasil only router
 		if (ssu2)
 		{
 			uint16_t ssu2port; i2p::config::GetOption("ssu2.port", ssu2port);
-			if (!ssu2port && port) ssu2port = ssu ? (port + 1) : port;
+			if (!ssu2port && port) ssu2port = port;
 			bool published; i2p::config::GetOption("ssu2.published", published);
 			if (published)
 				i2p::context.PublishSSU2Address (ssu2port, true, ipv4, ipv6); // publish

libi2pd/Transports.h

@@ -21,7 +21,6 @@
 #include <atomic>
 #include <boost/asio.hpp>
 #include "TransportSession.h"
-#include "SSU.h"
 #include "SSU2.h"
 #include "NTCP2.h"
 #include "RouterInfo.h"
@@ -96,10 +95,9 @@ namespace transport
 			Transports ();
 			~Transports ();
 
-			void Start (bool enableNTCP2=true, bool enableSSU=true, bool enableSSU2=false);
+			void Start (bool enableNTCP2=true, bool enableSSU2=true);
 			void Stop ();
 
-			bool IsBoundSSU() const { return m_SSUServer != nullptr; }
 			bool IsBoundSSU2() const { return m_SSU2Server != nullptr; }
 			bool IsBoundNTCP2() const { return m_NTCP2Server != nullptr; }
 
@@ -170,7 +168,6 @@ namespace transport
 			boost::asio::io_service::work * m_Work;
 			boost::asio::deadline_timer * m_PeerCleanupTimer, * m_PeerTestTimer;
 
-			SSUServer * m_SSUServer;
 			SSU2Server * m_SSU2Server;
 			NTCP2Server * m_NTCP2Server;
 			mutable std::mutex m_PeersMutex;
@@ -196,7 +193,6 @@ namespace transport
 		public:
 
 			// for HTTP only
-			const SSUServer * GetSSUServer () const { return m_SSUServer; };
 			const NTCP2Server * GetNTCP2Server () const { return m_NTCP2Server; };
 			const SSU2Server * GetSSU2Server () const { return m_SSU2Server; };
 			const decltype(m_Peers)& GetPeers () const { return m_Peers; };

libi2pd/TunnelPool.cpp

@@ -76,12 +76,12 @@ namespace tunnel
 			if (m_NumInboundHops > size)
 			{
 				m_NumInboundHops = size;
-				LogPrint (eLogInfo, "Tunnels: Inbound tunnel length has beed adjusted to ", size, " for explicit peers");
+				LogPrint (eLogInfo, "Tunnels: Inbound tunnel length has been adjusted to ", size, " for explicit peers");
 			}
 			if (m_NumOutboundHops > size)
 			{
 				m_NumOutboundHops = size;
-				LogPrint (eLogInfo, "Tunnels: Outbound tunnel length has beed adjusted to ", size, " for explicit peers");
+				LogPrint (eLogInfo, "Tunnels: Outbound tunnel length has been adjusted to ", size, " for explicit peers");
 			}
 			m_NumInboundTunnels = 1;
 			m_NumOutboundTunnels = 1;

libi2pd/util.cpp

@@ -84,7 +84,7 @@ const char *inet_ntop_xp(int af, const void *src, char *dst, socklen_t size)
 		default:
 			return NULL;
 	}
-	/* cannot direclty use &size because of strict aliasing rules */
+	/* cannot directly use &size because of strict aliasing rules */
 	return (WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst, &s) == 0)? dst : NULL;
 }
 

libi2pd_client/UDPTunnel.cpp

@@ -259,7 +259,7 @@ namespace client
 	void I2PUDPClientTunnel::HandleRecvFromLocal (const boost::system::error_code & ec, std::size_t transferred)
 	{
 		if (m_cancel_resolve) {
-			LogPrint (eLogDebug, "UDP Client: Ignoring incomming data: stopping");
+			LogPrint (eLogDebug, "UDP Client: Ignoring incoming data: stopping");
 			return;
 		}
 		if (ec) {

tests/test-blinding.cpp

@@ -16,28 +16,26 @@ void BlindTest (SigningKeyType sigType)
 	auto timestamp = GetSecondsSinceEpoch ();	
 	char date[9];
 	GetDateString (timestamp, date);
-	uint8_t blindedPriv[64], blindedPub[128]; 
+	uint8_t blindedPriv[32], blindedPub[32]; 
 	auto publicKeyLen = blindedKey.BlindPrivateKey (keys.GetSigningPrivateKey (), date, blindedPriv, blindedPub);
-	uint8_t blindedPub1[128];	
+	uint8_t blindedPub1[32];	
 	blindedKey.GetBlindedKey (date, blindedPub1);
 	// check if public key produced from private blinded key matches blided public key
 	assert (!memcmp (blindedPub, blindedPub1, publicKeyLen));
 	// try to sign and verify
-	std::unique_ptr<Signer> blindedSigner (PrivateKeys::CreateSigner (sigType, blindedPriv));
+	std::unique_ptr<Signer> blindedSigner (PrivateKeys::CreateSigner (blindedKey.GetBlindedSigType (), blindedPriv));
-	uint8_t buf[100], signature[128];
+	uint8_t buf[100], signature[64];
 	memset (buf, 1, 100);
 	blindedSigner->Sign (buf, 100, signature);	
-	std::unique_ptr<Verifier> blindedVerifier (IdentityEx::CreateVerifier (sigType));
+	std::unique_ptr<Verifier> blindedVerifier (IdentityEx::CreateVerifier (blindedKey.GetBlindedSigType ()));
-	blindedVerifier->SetPublicKey (blindedPub1);
+	blindedVerifier->SetPublicKey (blindedPub);
 	assert (blindedVerifier->Verify (buf, 100, signature));		
 }
 
 int main ()
 {
+	// EdDSA test	
+	BlindTest (SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519);
 	// RedDSA test	
 	BlindTest (SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519);
-	// P256 test
-	BlindTest (SIGNING_KEY_TYPE_ECDSA_SHA256_P256);
-	// P384 test
-	BlindTest (SIGNING_KEY_TYPE_ECDSA_SHA384_P384);
 }