socket的BeginConnect(EndPoint remoteEP,AsyncCallback callback,objcet state);个人理解1.socket.BeginConnect();

1.socket.BeginConnect();

　　其中的三个参数值EndPoint remoteEP,这个是用来指定连接的socket服务器的的地址

socket参数表

EndPoint remoteEP	这个的参数用来指定socket所连接的服务器的地址,一般包含的信息有,IP地址+端口号Point
AsyncCallback callback	这个参数指定一个异步的委托来请求socket服务器,并执行.
objcet state	用来指定异步请求委托的参数

 

 

 

 

 

 

 

 

 

 

 

public static void AsynConnect(string json, string ip, int port)
{
try
{
timeoutObject = new ManualResetEvent(false);
sendstr = json;
IPEndPoint ipe = new IPEndPoint(IPAddress.Parse(ip), port);
client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
client.BeginConnect(ipe, new AsyncCallback(CallBackMethod), client);
if (!timeoutObject.WaitOne(5000, false))
{
client.Close();
}
}
catch (Exception ex)
{
}
}
public static void CallBackMethod(IAsyncResult asyncresult)
{
try
{
client = asyncresult.AsyncState as Socket;
if (client != null)
{
client.EndConnect(asyncresult);
AsynSend(client, sendstr);
AsynRecive(client);
}
}
catch (Exception e)
{
}
finally
{
timeoutObject.Set();
}
}
public static void AsynSend(Socket socket, string message)
{
if (socket == null || message == string.Empty) return;
//编码

byte[] data = Encoding.UTF8.GetBytes(message);
try
{
socket.BeginSend(data, 0, data.Length, SocketFlags.None, asyncResult =>
{
int length = socket.EndSend(asyncResult);
// Console.WriteLine(string.Format("客户端发送消息:{0}", message));
}, null);
}
catch (Exception ex)
{
}
}
static string receicestr = "";
public static void AsynRecive(Socket socket)
{
byte[] data = new byte[1024];
try
{
socket.BeginReceive(data, 0, data.Length, SocketFlags.None,
asyncResult =>
{
int length = socket.EndReceive(asyncResult);
receicestr += Encoding.UTF8.GetString(data);
AsynRecive(socket);
}, null);
}
catch (Exception ex)
{
}
}

按照我的理解是,先创建一个socket连接对象,开启BeginConnect()连接的同时,开启一个新的线程用来走

传入的异步委托,在委托中调用EndConnect(),方法来来让阻塞的线程往下走并同时进行了发送消息和接受

消息两个操作,

 

 

 

第一篇随笔可能语言逻辑和信息不太完整和严谨,如果有错误的地方和不严谨的地方请在下方回复我,我将及时改正