Method SendRetry

libi2pd/SSU2Session.cpp:1541–1579

	}

	void SSU2Session::SendRetry ()
	{
		// we are Bob
		Header header;
		uint8_t h[32], payload[72];
		// fill packet
		header.h.connID = m_DestConnID; // dest id
		RAND_bytes (header.buf + 8, 4); // random packet num
		header.h.type = eSSU2Retry;
		header.h.flags[0] = GetVersion (); // ver
		header.h.flags[1] = (uint8_t)i2p::context.GetNetID (); // netID
		header.h.flags[2] = 0; // flag
		memcpy (h, header.buf, 16);
		memcpy (h + 16, &m_SourceConnID, 8); // source id
		uint64_t token = 0;
		if (m_TerminationReason == eSSU2TerminationReasonNormalClose)
			token = m_Server.GetIncomingToken (m_RemoteEndpoint);
		memcpy (h + 24, &token, 8); // token
		// payload
		payload[0] = eSSU2BlkDateTime;
		htobe16buf (payload + 1, 4);
		htobe32buf (payload + 3, (i2p::util::GetMillisecondsSinceEpoch () + 500)/1000);
		size_t payloadSize = 7;
		payloadSize += CreateAddressBlock (payload + payloadSize, 56 - payloadSize, m_RemoteEndpoint);
		if (m_TerminationReason != eSSU2TerminationReasonNormalClose)
			payloadSize += CreateTerminationBlock (payload + payloadSize, 56 - payloadSize);
		payloadSize += CreatePaddingBlock (payload + payloadSize, 56 - payloadSize);
		// encrypt
		uint8_t nonce[12];
		CreateNonce (be32toh (header.h.packetNum), nonce);
		i2p::crypto::AEADChaCha20Poly1305 (payload, payloadSize, h, 32, i2p::context.GetSSU2IntroKey (), nonce, payload, payloadSize + 16, true);
		payloadSize += 16;
		header.ll[0] ^= CreateHeaderMask (i2p::context.GetSSU2IntroKey (), payload + (payloadSize - 24));
		header.ll[1] ^= CreateHeaderMask (i2p::context.GetSSU2IntroKey (), payload + (payloadSize - 12));
		memset (nonce, 0, 12);
		m_Server.ChaCha20 (h + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, h + 16);
		// send
		m_Server.Send (header.buf, 16, h + 16, 16, payload, payloadSize, m_RemoteEndpoint);
	}

	bool SSU2Session::ProcessRetry (uint8_t * buf, size_t len)
	{