我正在制作一个分为两部分的程序。
第 1 部分：在 PC 上运行的 C# server-socket 应用程序，侦听命令并采取相应措施。
第 2 部分：在手机上运行的 Java 客户端套接字应用程序，当按下按钮时，它会向 pc 发送命令。
目前，我可以将命令从客户端发送到服务器，一切都很好。但我的问题是：当我向服务器发送特定命令时，我希望服务器回复客户端，客户端读取该回复。
问题是，当客户端尝试读取时，它会超时。
Java客户端程序：
class ClientThread implements Runnable
{
public void run()
{
try
{
Socket socket = new Socket(serverIpAddress, serverPort);
socket.setSoTimeout(5000);
while (true)
{
try
{
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
Log.d("Nicklas", "Out it goes");
out.println(Command);
if (Command == "CMD:GetOptions<EOF>")
{
Log.d("Nicklas", "Getting options");
try
{
Log.d("Nicklas", "Line 1");
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
Log.d("Nicklas", "Line 2");
String answer = in.readLine();
Log.d("Nicklas", "answer = " + answer );
}
catch (Exception ee)
{
Log.d("Nicklasasasas", ee.toString());
}
}
break;
}
catch (Exception e)
{
Log.d("Nicklas", "CAE = " + e.toString());
break;
}
}
socket.close();
}
catch (ConnectException ee)
{
Log.d("Nicklas", "Kunne ikke forbinde");
}
catch (Exception e)
{
Log.d("Nicklasssssss", e.toString());
}
}
}
这被称为：
Thread cThread = new Thread(new ClientThread());
cThread.start();
并使用全局变量“Command”，它将包含不同的信息，具体取决于按下的按钮。
程序在“String answer = in.readline();”行失败 除了“java.net.SocketTimeoutException”。
这是程序的 C# 服务器部分：
private void ListenForClients()
{
this.tcpListener.Start();
while (true)
{
//blocks until a client has connected to the server
TcpClient client = this.tcpListener.AcceptTcpClient();
//create a thread to handle communication
//with connected client
Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
clientThread.Start(client);
}
}
private void HandleClientComm(object client)
{
TcpClient tcpClient = (TcpClient)client;
NetworkStream clientStream = tcpClient.GetStream();
byte[] message = new byte[4096];
int bytesRead;
while (true)
{
bytesRead = 0;
try
{
//blocks until a client sends a message
bytesRead = clientStream.Read(message, 0, 4096);
}
catch
{
//a socket error has occured
break;
}
if (bytesRead == 0)
{
//the client has disconnected from the server
break;
}
//message has successfully been received
ASCIIEncoding encoder = new ASCIIEncoding();
//System.Diagnostics.Debug.WriteLine(encoder.GetString(message, 0, bytesRead));
string Input = (encoder.GetString(message, 0, bytesRead));
Input = Input.Trim();
object[] obj = new object[1];
obj[0] = Input;
if (Input == "CMD:GetOptions<EOF>")
{
try
{
byte[] buffer = encoder.GetBytes("CMD:Accepted");
clientStream.Write(buffer, 0, buffer.Length);
clientStream.Flush();
MessageBox.Show("Client program asked for reply");
}
catch (Exception e)
{
MessageBox.Show("Oh it no work!: " + e.ToString());
}
}
else
{
Udfor(Input);
}
}
tcpClient.Close();
}
在 Form1() 中使用以下方法调用
this.tcpListener = new TcpListener(IPAddress.Any, 4532);
this.listenThread = new Thread(new ThreadStart(ListenForClients));
this.listenThread.Start();
C# 服务器似乎工作正常，并显示消息框“客户端程序要求回复”
谁能发现错误？