之所以要進行socket套接字通訊庫封裝，主要是直接使用套接字進行網路通訊程式設計相對複雜，特別對於初學者而言。實際上微軟從.net 2.0開始已經提供了tcp、udp通訊高階封裝類如下：
tcplistener
tcpclient
udpclient
custcplistener
custcpclient
public class custcplistener
}protected bool active
}public endpoint localendpoint
return this.mserversocket.localendpoint;}}
public networkstream datastream
return networkstream;}}
public custcplistener(ipendpoint localep)
public custcplistener(string localaddr, int port)
this.mserversocketendpoint = new ipendpoint(ipaddress.parse(localaddr), port);
this.mserversocket = new socket(this.mserversocketendpoint.addressfamily, sockettype.stream, protocoltype.tcp);
}public custcplistener(int port)
public void start()
/// /// 開始伺服器監聽
///
/// 同時等待連線的最大個數（半連線佇列個數限制）
public void start(int backlog)
if (this.mserversocket == null)
this.mserversocket.bind(this.mserversocketendpoint);
this.mserversocket.listen(backlog);
this.isactive = true;
}public void stop()
this.isactive = false;
this.mserversocket = new socket(this.mserversocketendpoint.addressfamily, sockettype.stream, protocoltype.tcp);
}public socket acceptsocket()
public custcpclient accepttcpclient()
}
public class custcpclient : idisposable
protected bool active
public ipendpoint clientsocketendpoint
public bool isconnected }
public networkstream datastream
return networkstream;}}
public custcpclient(ipendpoint localep)
this.client = new socket(localep.addressfamily, sockettype.stream, protocoltype.tcp);
this.active = false;
this.client.bind(localep);
this.clientsocketendpoint = localep;
}public custcpclient(string localaddr, int port)
ipendpoint localep = new ipendpoint(ipaddress.parse(localaddr), port);
this.client = new socket(localep.addressfamily, sockettype.stream, protocoltype.tcp);
this.active = false;
this.client.bind(localep);
this.clientsocketendpoint = localep;
}internal custcpclient(socket acceptedsocket)
public void connect(string address, int port)
ipendpoint remoteep = new ipendpoint(ipaddress.parse(address), port);
this.connect(remoteep);
}public void connect(ipendpoint remoteep)
this.client.connect(remoteep);
this.active = true;
}public void close()
protected virtual void dispose(bool disposing)
else
}gc.suppressfinalize(this);}}
public void dispose()
}
class program
private static void listenerclientconnection()
port=",
tcpclient.clientsocketendpoint.address, tcpclient.clientsocketendpoint.port);
thread thread = new thread(datahandleprocess);
thread.isbackground = true;
thread.start(tcpclient);}}
private static void datahandleprocess(object obj)
catch (exception)
thread.sleep(5);}}
}
class program
private static void userprocess()
次,內容：", i, "測試通訊");
console.writeline("傳送資料：", str);
sw.writeline(str);
}break;}}
}
補充：目前有很多優秀的開源socket框架，比如supersocket、fastsocket等。
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