java.net.SocketException problem


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Thread: java.net.SocketException problem

  1. #1
    Join Date
    Jan 2005
    Posts
    2

    java.net.SocketException problem

    What im trying to do is to create a client and server system similar to the whois protocol.

    What i have is a server program that has a database of peoples locations. Then the client can query the server by giving it a users username and it will respond with there location.

    Ive not really used any of java's networking features before doing this so i appologise if any of my questions are trivial.

    I have the client program working as it should, but im haveing problems with the server.

    Here is a bit of the code i have:
    Code:
    	public static void run() throws Exception
    	{
    		int port = 43;
    
    		try 
    		{
    			ServerSocket acceptSocket;
    			acceptSocket = new ServerSocket(port) ;
    			while (true) 
    			{
    				Socket s = acceptSocket.accept() ;
    				host = s.getInetAddress().getHostName();
    				doRequest(s);
    				s.close();
    			}
    		} 
    		catch (IOException e) 
    		{
    			System.out.println("run Method Error: " + e.toString());
    		}
    	}
    That is what waits for the connections on port 43, that again seems to work ok.

    This next bit of code however keeps throwing java.net.SocketException's:
    Code:
    	// reads the request from the stream
    	public static void readRequest(Socket s) throws Exception
    	{
    		int c;
    
    		System.out.println("Doing request");
    
    
    		InputStream in = s.getInputStream();
    		try
    		{
    
    			while ((c = in.read()) != -1) 
    			{
    				System.out.print((char) c);
    				request = request + (char)c;
    			}
    			in.close();
    
    		}
    		catch (IOException e)
    		{
    			System.out.println("readRequest Error: " + e.toString());
    		}
    
    	}
    The full exception is: java.net.SocketException: Connection reset by peer: JVM_
    recv in socket input stream read

    The data from the client is being received correctly, so why is this error being generated?

    Thanks in advance,

    Adam.

  2. #2
    Join Date
    Jan 2005
    Location
    Limerick, Ireland
    Posts
    19
    Connection reset by peer means that the other client application closed the connection post the code for the client

  3. #3
    Join Date
    Jan 2005
    Posts
    2
    Thanks for the reply but i have sorted the problem now.

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