//异步创建网络连接
private static void MyConnectAsyncInternal(this EndPoint remoteEndPoint, MyConnectedCallback callback, object state)
{
if (remoteEndPoint is DnsEndPoint)
{
var dnsEndPoint = (DnsEndPoint)remoteEndPoint;
var asyncResult = Dns.BeginGetHostAddresses(dnsEndPoint.Host, MyOnGetHostAddresses,
new DnsConnectState
{
Port = dnsEndPoint.Port,
Callback = callback,
State = state
});
if (asyncResult.CompletedSynchronously)
{
MyOnGetHostAddresses(asyncResult);
}
}
else
{
var e = MyCreateSocketAsyncArgs(remoteEndPoint, callback, state);
var socket = new Socket(remoteEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
e.AcceptSocket = socket;
socket.BeginConnect(remoteEndPoint, new AsyncCallback(MyConnectionCallback), e);
}
}
//创建自定义连接参数
static MySocketAsyncArgs MyCreateSocketAsyncArgs(EndPoint remoteEndPoint, MyConnectedCallback callback, object state)
{
var e = new MySocketAsyncArgs();
e.State = state;
e.Callback = callback;
e.RemoteEndPoint = remoteEndPoint;
return(e);
}
public static void MyConnectAsync(this EndPoint remoteEndPoint, MyConnectedCallback callback, object state)
{
MyConnectAsyncInternal(remoteEndPoint, callback, state);
}
