C#TCP通讯（二）

客户端代码：

 1  byte[] ReadBytes = new byte[1024];  
 2 private void ConnectServer_Camera(string ip, int port)
 3  {
 5          tcpclient= new TcpClient();
 6          tcpclient.BeginConnect(IPAddress.Parse(ip), port, CameraProcess, null);
 8   }
 9  private async void CameraProcess(IAsyncResult ar)
10  {
11             if (tcpclient.Connected)
12             {
13                 tcpclient.EndConnect(ar);
14                 tcpclient.GetStream().BeginRead(ReadBytes , 0, ReadBytes .Length, ReceiveCallBack_Camera, null);
15             }
16             else
17             {
18                 await Task.Delay(2000);
19               
20                 tcpclient.BeginConnect(IPAddress.Parse(cameraIP), cameraPort, CameraProcess, null);
21             }
22   }
24  private void ReceiveCallBack_Camera(IAsyncResult ar)
25  {
27           int len = tcpclient.GetStream().EndRead(ar);
28            if (len > 0)
29            {
30              string str = Encoding.UTF8.GetString(ReadBytes , 0, len);
32            }
33             else
34             {
35              tcpclient= null;
37              ConnectServer_Camera(cameraIP, cameraPort);
38                 }
39            
41  }

  
private 
void ConnectServer_Camera(
string ip, 
int port)         {             
try             {                 mTcpClient_Camera = 
new TcpClient();                 mTcpClient_Camera.BeginConnect(IPAddress.Parse(ip), port, CameraProcess, 
null);             }             
catch (Exception e)             {                 mOP01ViewModel.AddRecordInfo(RecordLevel.Error, 
$”视觉服务连接异常：{e.Message
}”);             }         }