private void RecvSend(Socket sktRecv, Socket sktSend)
{
RecvPack pack = new RecvPack();
pack.sktRecv = sktRecv;
pack.sktSend = sktSend;
AsyncCallback ac = RecvCallback;
sktRecv.BeginReceive(pack.buf, 0, pack.buf.Length, SocketFlags.None, ac, pack);
}
private void RecvCallback(IAsyncResult ar)
{
try
{
// 1.接收
RecvPack pack = (RecvPack)ar.AsyncState;
int nRecv = pack.sktRecv.EndReceive(ar);
if (nRecv > 0)
{
// 2.复制
RecvPack packSend = new RecvPack();
packSend.sktSend = pack.sktSend;
Array.Copy(pack.buf, packSend.buf, nRecv);
// 3.发送
AsyncCallback ac = SendCallback;
pack.sktSend.BeginSend(packSend.buf, 0, nRecv, SocketFlags.None, ac, packSend);
// 4.再接收
AsyncCallback acRecv = RecvCallback;
pack.sktRecv.BeginReceive(pack.buf, 0, pack.buf.Length, SocketFlags.None, acRecv, pack);
}
else
{
// 5.关闭连接
pack.sktSend.Shutdown(SocketShutdown.Both);
pack.sktSend.Close();
pack.sktRecv.Shutdown(SocketShutdown.Both);
pack.sktRecv.Close();
if (OnFinished != null)
{
OnFinished(this);
}
}
}
catch (SocketException)
{
// Cancelled 对端关闭了连接
if (OnFinished != null)
{
OnFinished(this);
}
}
catch (ObjectDisposedException)
{
// Cancelled
if (OnFinished != null)
{
OnFinished(this);
}
}
}
private void SendCallback(IAsyncResult ar)
{
try
{
RecvPack pack = (RecvPack)ar.AsyncState;
int nSent = pack.sktSend.EndSend(ar);
}
catch (SocketException)
{
// Cancelled 对端关闭了连接
if (OnFinished != null)
{
OnFinished(this);
}
}
catch (ObjectDisposedException)
{
// Cancelled
if (OnFinished != null)
{
OnFinished(this);
}
}
}
