update LeaseSet if a tunnel was deleted

libi2pd/LeaseSet.cpp

@@ -135,7 +135,7 @@ namespace data
 		}
 	}
 
-	uint64_t LeaseSet::ExtractTimestamp (const uint8_t * buf, size_t len) const
+	uint64_t LeaseSet::ExtractTimestamp (const uint8_t * buf, size_t len, uint8_t& num) const
 	{
 		if (!m_Identity) return 0;
 		size_t size = m_Identity->GetFullLen ();
@@ -143,7 +143,7 @@ namespace data
 		size += 256; // encryption key
 		size += m_Identity->GetSigningPublicKeyLen (); // unused signing key
 		if (size > len) return 0;
-		uint8_t num = buf[size];
+		num = buf[size];
 		size++; // num
 		if (size + num*LEASE_SIZE > len) return 0;
 		uint64_t timestamp= 0 ;
@@ -160,7 +160,8 @@ namespace data
 
 	bool LeaseSet::IsNewer (const uint8_t * buf, size_t len) const
 	{
-		return ExtractTimestamp (buf, len) > ExtractTimestamp (m_Buffer, m_BufferLen);
+		uint8_t num1, num2;
+		return ExtractTimestamp (buf, len, num2) > ExtractTimestamp (m_Buffer, m_BufferLen, num1) || num2 < num1; // some lease might be deleted
 	}
 
 	bool LeaseSet::ExpiresSoon(const uint64_t dlt, const uint64_t fudge) const

libi2pd/LeaseSet.h

@@ -82,7 +82,7 @@ namespace data
 		private:
 
 			void ReadFromBuffer (bool readIdentity = true, bool verifySignature = true);
-			uint64_t ExtractTimestamp (const uint8_t * buf, size_t len) const; // min expiration time
+			uint64_t ExtractTimestamp (const uint8_t * buf, size_t len, uint8_t& num) const; // returns max expiration time, num is number of leases
 
 		private: