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using System;
using System.Net.Sockets;
namespace OpenSim.Region.ScriptEngine.Common.TRPC
{
public class TCPSocket
{
public readonly Socket Client;
public readonly int ID;
public delegate void DataReceivedDelegate(int ID, byte[] data, int offset, int length);
public delegate void DataSentDelegate(int ID, int length);
public delegate void CloseDelegate(int ID);
public event DataReceivedDelegate DataReceived;
public event DataSentDelegate DataSent;
public event CloseDelegate Close;
private byte[] RecvQueue = new byte[4096];
private int RecvQueueSize = 4096;
public TCPSocket(int id, Socket client)
{
ID = id;
Client = client;
}
public void Start()
{
// Start listening
BeginReceive();
}
private void BeginReceive()
{
Client.BeginReceive(RecvQueue, 0, RecvQueueSize, SocketFlags.None, new AsyncCallback(asyncDataReceived), Client);
}
/// <summary>
/// Callback for successful receive (or connection close)
/// </summary>
/// <param name="ar"></param>
private void asyncDataReceived(IAsyncResult ar)
{
Socket client = (Socket)ar.AsyncState;
int recv = client.EndReceive(ar);
// Is connection closed?
if (recv == 0)
{
client.Close();
Close(ID);
return;
}
// Call receive event
DataReceived(ID, RecvQueue, 0, recv);
// Start new receive
BeginReceive();
}
public void Send(int clientID, byte[] data, int offset, int len)
{
Client.BeginSend(data, offset, len, SocketFlags.None, new AsyncCallback(asyncDataSent), Client);
}
/// <summary>
/// Callback for successful send
/// </summary>
/// <param name="ar"></param>
void asyncDataSent(IAsyncResult ar)
{
Socket client = (Socket)ar.AsyncState;
int sent = client.EndSend(ar);
DataSent(ID, sent);
}
public void Disconnect()
{
Client.Close();
Close(ID);
}
}
}
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