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full implementation of peer test

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orignal 2015-02-25 21:56:51 -05:00
parent 34e31f3d78
commit 51aea367c3
4 changed files with 90 additions and 40 deletions
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84
SSUSession.cpp
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@ -896,62 +896,80 @@ namespace transport
LogPrint (eLogWarning, "Address of ", size, " bytes not supported");
return;
}
if (m_PeerTestNonces.count (nonce) > 0)
{
switch (m_Server.GetPeerTestParticipant (nonce))
{
// existing test
if (m_PeerTest) // Alice
{
case ePeerTestParticipantAlice1:
{
if (m_State == eSessionStateEstablished)
LogPrint (eLogDebug, "SSU peer test from Bob. We are Alice");
else
{
LogPrint (eLogDebug, "SSU first peer test from Charlie. We are Alice");
m_PeerTest = false;
m_PeerTestNonces.erase (nonce);
m_Server.PeerTestComplete (nonce);
m_Server.UpdatePeerTest (nonce, ePeerTestParticipantAlice2);
SendPeerTest (nonce, senderEndpoint.address ().to_v4 ().to_ulong (),
senderEndpoint.port (), introKey, true, false); // to Charlie
}
}
else if (port) // Bob
break;
}
case ePeerTestParticipantAlice2:
{
if (m_State == eSessionStateEstablished)
LogPrint (eLogDebug, "SSU peer test from Bob. We are Alice");
else
{
// peer test successive
LogPrint (eLogDebug, "SSU second peer test from Charlie. We are Alice");
m_Server.RemovePeerTest (nonce);
}
break;
}
case ePeerTestParticipantBob:
{
LogPrint (eLogDebug, "SSU peer test from Charlie. We are Bob");
m_PeerTestNonces.erase (nonce); // nonce has been used
m_Server.RemovePeerTest (nonce); // nonce has been used
boost::asio::ip::udp::endpoint ep (boost::asio::ip::address_v4 (be32toh (address)), be16toh (port)); // Alice's address/port
auto session = m_Server.FindSession (ep); // find session with Alice
if (session)
session->Send (PAYLOAD_TYPE_PEER_TEST, buf1, len); // back to Alice
break;
}
else // Charlie
{
case ePeerTestParticipantCharlie:
{
LogPrint (eLogDebug, "SSU peer test from Alice. We are Charlie");
m_Server.RemovePeerTest (nonce); // nonce has been used
SendPeerTest (nonce, senderEndpoint.address ().to_v4 ().to_ulong (),
senderEndpoint.port (), introKey); // to Alice with her actual address
break;
}
}
else
{
if (m_State == eSessionStateEstablished)
// test not found
case ePeerTestParticipantUnknown:
{
// new test
m_PeerTestNonces.insert (nonce);
if (port)
if (m_State == eSessionStateEstablished)
{
LogPrint (eLogDebug, "SSU peer test from Bob. We are Charlie");
Send (PAYLOAD_TYPE_PEER_TEST, buf1, len); // back to Bob
SendPeerTest (nonce, be32toh (address), be16toh (port), introKey); // to Alice with her address received from Bob
// new test
if (port)
{
LogPrint (eLogDebug, "SSU peer test from Bob. We are Charlie");
m_Server.NewPeerTest (nonce, ePeerTestParticipantCharlie);
Send (PAYLOAD_TYPE_PEER_TEST, buf1, len); // back to Bob
SendPeerTest (nonce, be32toh (address), be16toh (port), introKey); // to Alice with her address received from Bob
}
else
{
LogPrint (eLogDebug, "SSU peer test from Alice. We are Bob");
auto session = m_Server.GetRandomEstablishedSession (shared_from_this ()); // Charlie
if (session)
{
m_Server.NewPeerTest (nonce, ePeerTestParticipantBob);
session->SendPeerTest (nonce, senderEndpoint.address ().to_v4 ().to_ulong (),
senderEndpoint.port (), introKey, false); // to Charlie with Alice's actual address
}
}
}
else
{
LogPrint (eLogDebug, "SSU peer test from Alice. We are Bob");
auto session = m_Server.GetRandomEstablishedSession (shared_from_this ()); // Charlie
if (session)
session->SendPeerTest (nonce, senderEndpoint.address ().to_v4 ().to_ulong (),
senderEndpoint.port (), introKey, false); // to Charlie with Alice's actual address
}
LogPrint (eLogError, "SSU unexpected peer test");
}
else
LogPrint (eLogDebug, "SSU second peer test from Charlie. We are Alice");
}
}
@ -1023,8 +1041,8 @@ namespace transport
}
uint32_t nonce = i2p::context.GetRandomNumberGenerator ().GenerateWord32 ();
if (!nonce) nonce = 1;
m_PeerTestNonces.insert (nonce);
m_Server.NewPeerTest (nonce);
m_PeerTest = false;
m_Server.NewPeerTest (nonce, ePeerTestParticipantAlice1);
SendPeerTest (nonce, 0, 0, address->key, false, false); // address and port always zero for Alice
}