I am making a chat room using simple socket-socket connections. I have a server and client program. The server runs on port 225, and then when I run the client on port 225 so that they can read/write to the sockets, the client instantly stops with the error message

java.net.SocketException: Connection resetJava Result: 1

为何要提出这个例外? 它连接, 线被打印到控制台, 显示 :

try {
    client = new Socket(serverAdress, portNumber);
    System.out.println("Successful connection to server on port " + portNumber + ".");

那么为什么它不能连接起来呢?

这是例外追踪...

java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:168)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:264)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:306)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:158)
at java.io.InputStreamReader.read(InputStreamReader.java:167)
at java.io.BufferedReader.fill(BufferedReader.java:136)
at java.io.BufferedReader.readLine(BufferedReader.java:299)
at java.io.BufferedReader.readLine(BufferedReader.java:362)
at schoolroom10.SchoolRoomClient.SchoolRoomClientWindow.main(SchoolRoomClientWindow.java:85)

这是我的服务器代码...

public class SchoolRoomServer {

    //  server  will create the server over the local port:
    static ServerSocket serverSocket = null;

    //Socket for listening:
    static Socket clientcommunicate = null;

    //portnum is the number of the local port. Change to required port before running.
    static int portnum = 225;

    public static void main(String[] args) throws IOException{
        try {
            serverSocket = new ServerSocket(portnum);
        clientcommunicate = serverSocket.accept();
            Communicate c = new Communicate(Communicate.server);
            Thread t = new Thread(c);
            t.start();
        } catch (UnknownHostException uhe) {
            System.err.println(uhe);
            System.exit(1);
        } catch (IOException ioe) {
            System.err.println(ioe);
            System.exit(1);
        }


    } 
}

class Communicate implements Runnable {
    public static Socket server;
    Communicate(Socket server) {
        Communicate.server = server;
    }
    public void run() {
        String in = "";
        try {
            //i/o for clients:
            PrintStream output = new PrintStream(server.getOutputStream());
            BufferedReader input = new BufferedReader(new InputStreamReader(server.getInputStream()));
            String message;

            //Message handling:
            while(((message = input.readLine()) != null) && (!in.equals("."))) {
                output.println(message);
            }
        } catch (IOException ioe) {
            System.err.println(ioe);
        }
    }
}