72 lines
2.9 KiB
C#
72 lines
2.9 KiB
C#
using System;
|
|
using System.Net.Sockets;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
|
|
namespace Mistox.Server {
|
|
public class TCPConnection : IDisposable {
|
|
|
|
TcpClient _client;
|
|
TcpClientConnection _connection;
|
|
|
|
public TCPConnection( TcpClient tcpClient, string ConnectionID ) {
|
|
_client = tcpClient;
|
|
_client.NoDelay = true;
|
|
_connection = ServerInterface.Connections[ConnectionID];
|
|
ServerInterface.ServerInstance.InvokeUserConnected( ServerInterface.Connections[ConnectionID] );
|
|
// Start the receive thread
|
|
Thread receiveThread = new Thread(async () => await ReceiveThread() );
|
|
receiveThread.Start();
|
|
}
|
|
|
|
async Task ReceiveThread() {
|
|
using( NetworkStream ns = _client.GetStream() ) {
|
|
try {
|
|
byte[] headerBuffer = new byte[DataPacket.HeaderLength];
|
|
byte[] payloadBuffer = new byte[65535]; // Upper limit for safety
|
|
while( _connection.Connected ) {
|
|
|
|
// Read the header off
|
|
await ns.ReadExactlyAsync(headerBuffer, 0, 3);
|
|
|
|
// Parse the header
|
|
byte packetbyte = headerBuffer[0];
|
|
ushort dataLength = (ushort)((headerBuffer[1] << 8) | headerBuffer[2]);
|
|
|
|
// Make sure the data looks valid
|
|
if (dataLength > payloadBuffer.Length) {
|
|
throw new Exception("Incoming TCP payload is too large for the pre-allocated buffer.");
|
|
}
|
|
|
|
// Read off the data
|
|
await ns.ReadExactlyAsync(payloadBuffer, 0, dataLength);
|
|
|
|
// Create the dataobject
|
|
dynamic dataobject = DataPacket.Deserialize( packetbyte, dataLength, payloadBuffer.AsMemory(DataPacket.HeaderLength, dataLength) );
|
|
|
|
// Return the object
|
|
ServerInterface.ServerInstance.InvokeDataReceived(dataobject);
|
|
|
|
}
|
|
} catch (Exception e) {
|
|
ClientInterface.ServerClientInstance.Alive = false;
|
|
Dispose();
|
|
Console.WriteLine("TCP Receive exception: " + e.Message);
|
|
}
|
|
}
|
|
}
|
|
|
|
public async Task Send<T>( T packet ) {
|
|
byte[] byteData = DataPacket.Serialize( packet );
|
|
await _client.GetStream().WriteAsync( byteData, 0, byteData.Length );
|
|
}
|
|
|
|
public void Dispose() {
|
|
_connection.Connected = false;
|
|
ServerInterface.ServerInstance.InvokeUserDisconnected( _connection );
|
|
ServerInterface.ServerInstance.Alive = false;
|
|
ServerInterface.Connections.TryRemove( _connection.UserName, out _ );
|
|
}
|
|
}
|
|
}
|