From 64f0a545fdf99bb1967d99ccd402e28db571d1f7 Mon Sep 17 00:00:00 2001
From: Vort <vvort@yandex.ru>
Date: Tue, 28 Feb 2023 19:41:17 +0200
Subject: [PATCH] Improve MSVC 2015 compatibility

---
 libi2pd/I2PEndian.h          | 18 ++++++++++++++++++
 libi2pd/Streaming.cpp        |  2 +-
 libi2pd/util.cpp             | 31 ++++++++++++++++++++++++++++++-
 libi2pd_client/HTTPProxy.cpp |  2 +-
 4 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/libi2pd/I2PEndian.h b/libi2pd/I2PEndian.h
index d97bd055..06abf29a 100644
--- a/libi2pd/I2PEndian.h
+++ b/libi2pd/I2PEndian.h
@@ -36,6 +36,23 @@
 #define le64toh(x) OSSwapLittleToHostInt64(x)
 
 #elif defined(_WIN32)
+#if defined(_MSC_VER)
+#include <stdlib.h>
+#define htobe16(x) _byteswap_ushort(x)
+#define htole16(x) (x)
+#define be16toh(x) _byteswap_ushort(x)
+#define le16toh(x) (x)
+
+#define htobe32(x) _byteswap_ulong(x)
+#define htole32(x) (x)
+#define be32toh(x) _byteswap_ulong(x)
+#define le32toh(x) (x)
+
+#define htobe64(x) _byteswap_uint64(x)
+#define htole64(x) (x)
+#define be64toh(x) _byteswap_uint64(x)
+#define le64toh(x) (x)
+#else
 #define htobe16(x) __builtin_bswap16(x)
 #define htole16(x) (x)
 #define be16toh(x) __builtin_bswap16(x)
@@ -50,6 +67,7 @@
 #define htole64(x) (x)
 #define be64toh(x) __builtin_bswap64(x)
 #define le64toh(x) (x)
+#endif
 
 #else
 #define NEEDS_LOCAL_ENDIAN
diff --git a/libi2pd/Streaming.cpp b/libi2pd/Streaming.cpp
index 62c4acc7..1049abce 100644
--- a/libi2pd/Streaming.cpp
+++ b/libi2pd/Streaming.cpp
@@ -384,7 +384,7 @@ namespace stream
 			memset (p.buf, 0, 22); // minimal header all zeroes
 			memcpy (p.buf + 4, packet->buf, 4); // but receiveStreamID is the sendStreamID from the ping
 			htobe16buf (p.buf + 18, PACKET_FLAG_ECHO); // and echo flag
-			ssize_t payloadLen = packet->len - (packet->GetPayload () - packet->buf);
+			auto payloadLen = int(packet->len) - (packet->GetPayload () - packet->buf);
 			if (payloadLen > 0)
 				memcpy (p.buf + 22, packet->GetPayload (), payloadLen);
 			else
diff --git a/libi2pd/util.cpp b/libi2pd/util.cpp
index daf7fcbf..2426f13a 100644
--- a/libi2pd/util.cpp
+++ b/libi2pd/util.cpp
@@ -15,7 +15,7 @@
 #include "Log.h"
 #include "I2PEndian.h"
 
-#if not defined (__FreeBSD__)
+#if !defined (__FreeBSD__) && !defined(_MSC_VER)
 #include <pthread.h>
 #endif
 
@@ -37,6 +37,19 @@
 #include <iphlpapi.h>
 #include <shlobj.h>
 
+#if defined(_MSC_VER)
+const DWORD MS_VC_EXCEPTION = 0x406D1388;
+#pragma pack(push,8)
+typedef struct tagTHREADNAME_INFO
+{
+	DWORD dwType;
+	LPCSTR szName;
+	DWORD dwThreadID;
+	DWORD dwFlags;
+} THREADNAME_INFO;
+#pragma pack(pop)
+#endif
+
 #define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
 #define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
 
@@ -162,7 +175,23 @@ namespace util
 #elif defined(__NetBSD__)
 		pthread_setname_np(pthread_self(), "%s", (void *)name);
 #elif !defined(__gnu_hurd__)
+	#if defined(_MSC_VER)
+		THREADNAME_INFO info;
+		info.dwType = 0x1000;
+		info.szName = name;
+		info.dwThreadID = -1;
+		info.dwFlags = 0;
+		#pragma warning(push)
+		#pragma warning(disable: 6320 6322)
+		__try {
+			RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR*)&info);
+		}
+		__except (EXCEPTION_EXECUTE_HANDLER) {
+		}
+		#pragma warning(pop)
+	#else
 		pthread_setname_np(pthread_self(), name);
+	#endif
 #endif
 	}
 
diff --git a/libi2pd_client/HTTPProxy.cpp b/libi2pd_client/HTTPProxy.cpp
index 3e5ab595..61930876 100644
--- a/libi2pd_client/HTTPProxy.cpp
+++ b/libi2pd_client/HTTPProxy.cpp
@@ -113,7 +113,7 @@ namespace proxy {
 			i2p::http::URL m_ProxyURL;
 			i2p::http::URL m_RequestURL;
 			uint8_t m_socks_buf[255+8]; // for socks request/response
-			ssize_t m_req_len;
+			int m_req_len;
 			i2p::http::URL m_ClientRequestURL;
 			i2p::http::HTTPReq m_ClientRequest;
 			i2p::http::HTTPRes m_ClientResponse;