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@ -382,7 +382,7 @@ namespace ssu
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uint16_t fragmentSize = fragmentInfo & 0x1FFF; // bits 0 - 13
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bool isLast = fragmentInfo & 0x010000; // bit 16
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uint8_t fragmentNum = fragmentInfo >> 17; // bits 23 - 17
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LogPrint ("SSU data fragment ", (int)fragmentNum, " of message ", msgID, " size=", (int)fragmentSize, isLast ? " last" : " non-last");
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LogPrint ("SSU data fragment ", (int)fragmentNum, " of message ", msgID, " size=", (int)fragmentSize, isLast ? " last" : " non-last");
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I2NPMessage * msg = nullptr;
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if (fragmentNum > 0) // follow-up fragment
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{
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@ -414,15 +414,35 @@ namespace ssu
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m_IncomleteMessages.erase (msgID);
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msg->FromSSU (msgID);
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i2p::HandleI2NPMessage (msg, false);
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SendMsgAck (msgID);
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}
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}
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buf += fragmentSize;
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}
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}
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void SSUSession::SendMsgAck (uint32_t msgID)
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{
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uint8_t buf[48]; // actual length is 44 = 37 + 7 but pad it to multiple of 16
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uint8_t iv[16];
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*buf = DATA_FLAG_EXPLICIT_ACKS_INCLUDED; // flag
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buf[1] = 1; // number of ACKs
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*(uint32_t *)(buf + 2) = htobe32 (msgID); // msgID
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buf[6] = 0; // number of fragments
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CryptoPP::RandomNumberGenerator& rnd = i2p::context.GetRandomNumberGenerator ();
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rnd.GenerateBlock (iv, 16); // random iv
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// encrypt message with session key
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FillHeaderAndEncrypt (PAYLOAD_TYPE_DATA, buf, 48, m_SessionKey, iv, m_MacKey);
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m_State = eSessionStateConfirmedSent;
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m_Server->Send (buf, 48, m_RemoteEndpoint);
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}
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SSUServer::SSUServer (boost::asio::io_service& service, int port):
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m_Endpoint (boost::asio::ip::udp::v4 (), port), m_Socket (service, m_Endpoint)
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{
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m_Socket.set_option (boost::asio::socket_base::receive_buffer_size (65535));
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m_Socket.set_option (boost::asio::socket_base::send_buffer_size (65535));
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}
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SSUServer::~SSUServer ()
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