internal void SendConnectionEstablished() { NetOutgoingMessage om = m_peer.CreateMessage(0); om.m_messageType = NetMessageType.ConnectionEstablished; om.Write((float)NetTime.Now); m_peer.SendLibrary(om, m_remoteEndpoint); m_handshakeAttempts = 0; InitializePing(); if (m_status != NetConnectionStatus.Connected) { SetStatus(NetConnectionStatus.Connected, "Connected to " + NetUtility.ToHexString(m_remoteUniqueIdentifier)); } }
private void InitializeNetwork() { lock (m_initializeLock) { m_configuration.Lock(); if (m_status == NetPeerStatus.Running) { return; } if (m_configuration.m_enableUPnP) { m_upnp = new NetUPnP(this); } InitializePools(); m_releasedIncomingMessages.Clear(); m_unsentUnconnectedMessages.Clear(); m_handshakes.Clear(); // bind to socket IPEndPoint iep = null; iep = new IPEndPoint(m_configuration.LocalAddress, m_configuration.Port); EndPoint ep = (EndPoint)iep; m_socket = new PlatformSocket(); m_socket.ReceiveBufferSize = m_configuration.ReceiveBufferSize; m_socket.SendBufferSize = m_configuration.SendBufferSize; m_socket.Blocking = false; m_socket.Bind(ep); m_socket.Setup(); IPEndPoint boundEp = m_socket.LocalEndPoint as IPEndPoint; LogDebug("Socket bound to " + boundEp + ": " + m_socket.IsBound); m_listenPort = boundEp.Port; m_receiveBuffer = new byte[m_configuration.ReceiveBufferSize]; m_sendBuffer = new byte[m_configuration.SendBufferSize]; m_readHelperMessage = new NetIncomingMessage(NetIncomingMessageType.Error); m_readHelperMessage.m_data = m_receiveBuffer; byte[] macBytes = new byte[8]; NetRandom.Instance.NextBytes(macBytes); #if IS_FULL_NET_AVAILABLE try { System.Net.NetworkInformation.PhysicalAddress pa = NetUtility.GetMacAddress(); if (pa != null) { macBytes = pa.GetAddressBytes(); LogVerbose("Mac address is " + NetUtility.ToHexString(macBytes)); } else { LogWarning("Failed to get Mac address"); } } catch (NotSupportedException) { // not supported; lets just keep the random bytes set above } #endif byte[] epBytes = BitConverter.GetBytes(boundEp.GetHashCode()); byte[] combined = new byte[epBytes.Length + macBytes.Length]; Array.Copy(epBytes, 0, combined, 0, epBytes.Length); Array.Copy(macBytes, 0, combined, epBytes.Length, macBytes.Length); #if WINDOWS_PHONE SHA1 s = new SHA1Managed(); m_uniqueIdentifier = BitConverter.ToInt64(s.ComputeHash(combined), 0); #else m_uniqueIdentifier = BitConverter.ToInt64(SHA1.Create().ComputeHash(combined), 0); #endif m_status = NetPeerStatus.Running; } }
internal void ReceivedHandshake(double now, NetMessageType tp, int ptr, int payloadLength) { m_peer.VerifyNetworkThread(); byte[] hail; switch (tp) { case NetMessageType.Connect: if (m_status == NetConnectionStatus.None) { // Whee! Server full has already been checked bool ok = ValidateHandshakeData(ptr, payloadLength, out hail); if (ok) { if (hail != null) { m_remoteHailMessage = m_peer.CreateIncomingMessage(NetIncomingMessageType.Data, hail); m_remoteHailMessage.LengthBits = (hail.Length * 8); } else { m_remoteHailMessage = null; } if (m_peerConfiguration.IsMessageTypeEnabled(NetIncomingMessageType.ConnectionApproval)) { // ok, let's not add connection just yet NetIncomingMessage appMsg = m_peer.CreateIncomingMessage(NetIncomingMessageType.ConnectionApproval, (m_remoteHailMessage == null ? 0 : m_remoteHailMessage.LengthBytes)); appMsg.m_receiveTime = now; appMsg.m_senderConnection = this; appMsg.m_senderEndpoint = this.m_remoteEndpoint; if (m_remoteHailMessage != null) { appMsg.Write(m_remoteHailMessage.m_data, 0, m_remoteHailMessage.LengthBytes); } m_peer.ReleaseMessage(appMsg); return; } SendConnectResponse((float)now, true); } return; } if (m_status == NetConnectionStatus.RespondedConnect) { // our ConnectResponse must have been lost SendConnectResponse((float)now, true); return; } m_peer.LogDebug("Unhandled Connect: " + tp + ", status is " + m_status + " length: " + payloadLength); break; case NetMessageType.ConnectResponse: switch (m_status) { case NetConnectionStatus.InitiatedConnect: // awesome bool ok = ValidateHandshakeData(ptr, payloadLength, out hail); if (ok) { if (hail != null) { m_remoteHailMessage = m_peer.CreateIncomingMessage(NetIncomingMessageType.Data, hail); m_remoteHailMessage.LengthBits = (hail.Length * 8); } else { m_remoteHailMessage = null; } m_peer.AcceptConnection(this); SendConnectionEstablished(); return; } break; case NetConnectionStatus.RespondedConnect: // hello, wtf? break; case NetConnectionStatus.Disconnecting: case NetConnectionStatus.Disconnected: case NetConnectionStatus.None: // wtf? anyway, bye! break; case NetConnectionStatus.Connected: // my ConnectionEstablished must have been lost, send another one SendConnectionEstablished(); return; } break; case NetMessageType.ConnectionEstablished: switch (m_status) { case NetConnectionStatus.Connected: // ok... break; case NetConnectionStatus.Disconnected: case NetConnectionStatus.Disconnecting: case NetConnectionStatus.None: // too bad, almost made it break; case NetConnectionStatus.InitiatedConnect: // weird, should have been ConnectResponse... break; case NetConnectionStatus.RespondedConnect: // awesome NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength); InitializeRemoteTimeOffset(msg.ReadSingle()); m_peer.AcceptConnection(this); InitializePing(); SetStatus(NetConnectionStatus.Connected, "Connected to " + NetUtility.ToHexString(m_remoteUniqueIdentifier)); return; } break; case NetMessageType.Disconnect: // ouch string reason = "Ouch"; try { NetIncomingMessage inc = m_peer.SetupReadHelperMessage(ptr, payloadLength); reason = inc.ReadString(); } catch { } ExecuteDisconnect(reason, false); break; case NetMessageType.Discovery: m_peer.HandleIncomingDiscoveryRequest(now, m_remoteEndpoint, ptr, payloadLength); return; case NetMessageType.DiscoveryResponse: m_peer.HandleIncomingDiscoveryResponse(now, m_remoteEndpoint, ptr, payloadLength); return; case NetMessageType.Ping: // silently ignore return; default: m_peer.LogDebug("Unhandled type during handshake: " + tp + " length: " + payloadLength); break; } }