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나는 TCP 서버 (PC) - 클라이언트 (안드로이드) 애플리케이션을 만들었습니다. 서버에 클라이언트를 연결했지만 내 안드로이드 응용 프로그램을 다시 시작할 때 연결을 설정할 수 없습니다. 이것을 어떻게 처리 할 것인가? 안드로이드 응용 프로그램을 다시 시작하면 서버의 포트에 연결됩니까? ,이 등 HTTP, POP, SMTP, 같은 많은 응용 프로그램에 사용됩니다 간단하기 때문에 TCP는 프로토콜은 가장 일반적으로 사용되는 프로토콜 서버 VB.net와 안드로이드안드로이드 TCP 서버 클라이언트
Sub Main()
Dim serverSocket As New TcpListener(8888)
Dim requestCount As Integer
Dim clientSocket As TcpClient
serverSocket.Start()
msg("Server Started")
clientSocket = serverSocket.AcceptTcpClient()
msg("Accept connection from client")
requestCount = 0
Dim flag As Boolean = True
While (flag = True)
Try
requestCount = requestCount + 1
Dim networkStream As NetworkStream = _
clientSocket.GetStream()
Dim bytesFrom(10024) As Byte
networkStream.Read(bytesFrom, 0, CInt(clientSocket.ReceiveBufferSize))
Dim dataFromClient As String = _
System.Text.Encoding.ASCII.GetString(bytesFrom)
msg("Data from client - " + dataFromClient)
Dim serverResponse As String = _
"Server response " + Convert.ToString(requestCount)
Dim sendBytes As [Byte]() = _
Encoding.ASCII.GetBytes(serverResponse)
networkStream.Write(sendBytes, 0, sendBytes.Length)
networkStream.Flush()
msg(serverResponse)
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End While
clientSocket.Close()
serverSocket.Stop()
msg("exit")
Console.ReadLine()
End Sub
Sub msg(ByVal mesg As String)
mesg.Trim()
Console.WriteLine(" >> " + mesg)
End Sub
public class connectTask extends AsyncTask<String, String, TCPClient> {
@Override
protected TCPClient doInBackground(String... message) {
// we create a TCPClient object and
mTcpClient = new TCPClient(new TCPClient.OnMessageReceived() {
@Override
// here the messageReceived method is implemented
public void messageReceived(String message) {
// this method calls the onProgressUpdate
publishProgress(message);
}
});
mTcpClient.run();
return null;
}
public class TCPClient {
private String serverMessage;
public static final String SERVERIP = "192.168.1.65"; //your computer IP address
public static final int SERVERPORT = 4444;
private OnMessageReceived mMessageListener = null;
private boolean mRun = false;
PrintWriter out;
BufferedReader in;
/**
* Constructor of the class. OnMessagedReceived listens for the messages received from server
*/
public TCPClient(OnMessageReceived listener) {
mMessageListener = listener;
}
/**
* Sends the message entered by client to the server
* @param message text entered by client
*/
public void sendMessage(String message){
if (out != null && !out.checkError()) {
out.println(message);
out.flush();
}
}
public void stopClient(){
mRun = false;
}
public void run() {
mRun = true;
try {
//here you must put your computer's IP address.
InetAddress serverAddr = InetAddress.getByName(SERVERIP);
Log.e("TCP Client", "C: Connecting...");
//create a socket to make the connection with the server
Socket socket = new Socket(serverAddr, SERVERPORT);
try {
//send the message to the server
out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
Log.e("TCP Client", "C: Sent.");
//receive the message which the server sends back
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
//in this while the client listens for the messages sent by the server
while (mRun) {
serverMessage = in.readLine();
if (serverMessage != null && mMessageListener != null) {
//call the method messageReceived from MyActivity class
mMessageListener.messageReceived(serverMessage);
}
serverMessage = null;
}
Log.e("RESPONSE FROM SERVER", "S: Received Message: '" + serverMessage + "'");
} catch (Exception e) {
Log.e("TCP", "S: Error", e);
} finally {
//the socket must be closed. It is not possible to reconnect to this socket
// after it is closed, which means a new socket instance has to be created.
socket.close();
Log.e("Socket","Closed");
}
} catch (Exception e) {
Log.e("TCP", "C: Error", e);
}
}
일부 코드는 물론 오류를 게시하십시오. – conor