Method SendTokenRequest

libi2pd/SSU2Session.cpp:1454–1496

	}

	void SSU2Session::SendTokenRequest ()
	{
		// we are Alice
#if OPENSSL_PQ
		if (m_Server.GetVersion () > 2) // we support post quantum in config
			SetVersion (m_Address->v);
#endif
		Header header;
		uint8_t h[32], payload[41];
		// fill packet
		header.h.connID = m_DestConnID; // dest id
		RAND_bytes (header.buf + 8, 4); // random packet num
		header.h.type = eSSU2TokenRequest;
		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
		memset (h + 24, 0, 8); // zero token
		// payload
		payload[0] = eSSU2BlkDateTime;
		htobe16buf (payload + 1, 4);
		htobe32buf (payload + 3, (i2p::util::GetMillisecondsSinceEpoch () + 500)/1000);
		size_t payloadSize = 7;
		payloadSize += CreatePaddingBlock (payload + payloadSize, 25 - payloadSize, 1);
		// encrypt
		uint8_t nonce[12];
		CreateNonce (be32toh (header.h.packetNum), nonce);
		i2p::crypto::AEADChaCha20Poly1305 (payload, payloadSize, h, 32, m_Address->i, nonce, payload, payloadSize + 16, true);
		payloadSize += 16;
		header.ll[0] ^= CreateHeaderMask (m_Address->i, payload + (payloadSize - 24));
		header.ll[1] ^= CreateHeaderMask (m_Address->i, payload + (payloadSize - 12));
		memset (nonce, 0, 12);
		m_Server.ChaCha20 (h + 16, 16, m_Address->i, nonce, h + 16);
		// send
		if (m_Server.AddPendingOutgoingSession (shared_from_this ()))
			m_Server.Send (header.buf, 16, h + 16, 16, payload, payloadSize, m_RemoteEndpoint);
		else
		{
			LogPrint (eLogWarning, "SSU2: TokenRequest request to ", m_RemoteEndpoint, " already pending");
			Terminate ();
		}
	}

	bool SSU2Session::ProcessTokenRequest (Header& header, uint8_t * buf, size_t len)
	{