An existing connection was forcibly closed by the remote host

Question

I am working with a commercial application which is throwing a SocketException with the message,

An existing connection was forcibly closed by the rem

Answer 1

This is not a bug in your code. It is coming from .Net's Socket implementation. If you use the overloaded implementation of EndReceive as below you will not get this exception.

    SocketError errorCode;
    int nBytesRec = socket.EndReceive(ar, out errorCode);
    if (errorCode != SocketError.Success)
    {
        nBytesRec = 0;
    }