internal void Discover(NetPeer peer)
{
string content =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
m_discoveryResponseDeadline = NetTime.Now + 6.0; // arbitrarily chosen number, router gets 6 seconds to respond
m_status = UPnPStatus.Discovering;
byte[] raw = System.Text.Encoding.UTF8.GetBytes(content);
m_peer.LogDebug("Attempting UPnP discovery");
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
if (peer.Configuration.BroadcastAddress.Equals(IPAddress.Broadcast))
{
foreach (IPAddress address in NetUtility.GetBroadcastAddresses())
{
peer.RawSend(raw, 0, raw.Length, new NetEndPoint(address, 1900));
}
}
else
{
peer.RawSend(raw, 0, raw.Length, new NetEndPoint(peer.Configuration.BroadcastAddress, 1900));
}
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, false);
}
internal void ExtractServiceUrl(string resp)
{
#if !DEBUG
try
{
#endif
XmlDocument desc = new XmlDocument();
desc.Load(WebRequest.Create(resp).GetResponse().GetResponseStream());
XmlNamespaceManager nsMgr = new XmlNamespaceManager(desc.NameTable);
nsMgr.AddNamespace("tns", "urn:schemas-upnp-org:device-1-0");
XmlNode typen = desc.SelectSingleNode("//tns:device/tns:deviceType/text()", nsMgr);
if (!typen.Value.Contains("InternetGatewayDevice"))
{
return;
}
XmlNode node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:WANIPConnection:1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
return;
}
m_serviceUrl = CombineUrls(resp, node.Value);
m_peer.LogDebug("UPnP service ready");
m_discoveryComplete.Set();
#if !DEBUG
}
catch { return; }
#endif
}
internal void Discover(NetPeer peer)
{
string str =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
m_discoveryResponseDeadline = NetTime.Now + 6.0; // arbitrarily chosen number, router gets 6 seconds to respond
m_status = UPnPStatus.Discovering;
byte[] arr = System.Text.Encoding.UTF8.GetBytes(str);
m_peer.LogDebug("Attempting UPnP discovery");
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
peer.RawSend(arr, 0, arr.Length, new NetEndPoint(NetUtility.GetBroadcastAddress(), 1900));
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, false);
}
// received a library message while Connected
internal void ReceivedLibraryMessage(NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
float now = (float)NetTime.Now;
switch (tp)
{
case NetMessageType.Connect:
m_peer.LogDebug("Received handshake message (" + tp + ") despite connection being in place");
break;
case NetMessageType.ConnectResponse:
// handshake message must have been lost
HandleConnectResponse(now, tp, ptr, payloadLength);
break;
case NetMessageType.ConnectionEstablished:
// do nothing, all's well
break;
case NetMessageType.LibraryError:
m_peer.ThrowOrLog("LibraryError received by ReceivedLibraryMessage; this usually indicates a malformed message");
break;
case NetMessageType.Disconnect:
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
m_disconnectRequested = true;
m_disconnectMessage = msg.ReadString();
m_disconnectReqSendBye = false;
//ExecuteDisconnect(msg.ReadString(), false);
break;
case NetMessageType.Acknowledge:
for (int i = 0; i < payloadLength; i += 3)
{
NetMessageType acktp = (NetMessageType)m_peer.m_receiveBuffer[ptr++]; // netmessagetype
int seqNr = m_peer.m_receiveBuffer[ptr++];
seqNr |= (m_peer.m_receiveBuffer[ptr++] << 8);
// need to enqueue this and handle it in the netconnection heartbeat; so be able to send resends together with normal sends
m_queuedIncomingAcks.Enqueue(new NetTuple <NetMessageType, int>(acktp, seqNr));
}
break;
case NetMessageType.Ping:
int pingNr = m_peer.m_receiveBuffer[ptr++];
SendPong(pingNr);
break;
case NetMessageType.Pong:
NetIncomingMessage pmsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int pongNr = pmsg.ReadByte();
float remoteSendTime = pmsg.ReadSingle();
ReceivedPong(now, pongNr, remoteSendTime);
break;
case NetMessageType.ExpandMTURequest:
SendMTUSuccess(payloadLength);
break;
case NetMessageType.ExpandMTUSuccess:
if (m_peer.Configuration.AutoExpandMTU == false)
{
m_peer.LogDebug("Received ExpandMTURequest altho AutoExpandMTU is turned off!");
break;
}
NetIncomingMessage emsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int size = emsg.ReadInt32();
HandleExpandMTUSuccess(now, size);
break;
case NetMessageType.NatIntroduction:
// Unusual situation where server is actually already known, but got a nat introduction - oh well, lets handle it as usual
m_peer.HandleNatIntroduction(ptr);
break;
default:
m_peer.LogWarning("Connection received unhandled library message: " + tp);
break;
}
}
// received a library message while Connected
internal void ReceivedLibraryMessage(NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
float now = (float)NetTime.Now;
switch (tp)
{
case NetMessageType.Disconnect:
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
ExecuteDisconnect(msg.ReadString(), false);
break;
case NetMessageType.Acknowledge:
for (int i = 0; i < payloadLength; i += 3)
{
NetMessageType acktp = (NetMessageType)m_peer.m_receiveBuffer[ptr++]; // netmessagetype
int seqNr = m_peer.m_receiveBuffer[ptr++];
seqNr |= (m_peer.m_receiveBuffer[ptr++] << 8);
// need to enqueue this and handle it in the netconnection heartbeat; so be able to send resends together with normal sends
m_queuedIncomingAcks.Enqueue(new NetTuple <NetMessageType, int>(acktp, seqNr));
}
break;
case NetMessageType.Ping:
int pingNr = m_peer.m_receiveBuffer[ptr++];
SendPong(pingNr);
break;
case NetMessageType.Pong:
NetIncomingMessage pmsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int pongNr = pmsg.ReadByte();
float remoteSendTime = pmsg.ReadSingle();
ReceivedPong(now, pongNr, remoteSendTime);
break;
case NetMessageType.ExpandMTURequest:
SendMTUSuccess(payloadLength);
break;
case NetMessageType.ExpandMTUSuccess:
NetIncomingMessage emsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int size = emsg.ReadInt32();
HandleExpandMTUSuccess(now, size);
break;
case NetMessageType.NatIntroduction:
// Unusual situation where server is actually already known, but got a nat introduction - oh well, lets handle it as usual
m_peer.HandleNatIntroduction(ptr);
break;
case NetMessageType.ConnectResponse: // Lidgren bug fix -AR
// ConnectionEstablished (from handshake) must have been lost, send another one
m_peer.LogDebug("Resending ConnectionEstablished...");
SendConnectionEstablished();
break;
default:
m_peer.LogWarning("Connection received unhandled library message: " + tp);
break;
}
}
