🚀 go-pugleaf

Well this can be a bit tricky since, as you said, you don't want to rely on
the exception. I have had problems in the past with a server socket closing
and no exception being thrown on the waiting client. I always code a simple
heartbeat message that is sent from the client to the server and the server
returns. If the heartbeat doesn't make it back in X amount of time, the
client closes the socket connection. With something like this in place you
can replace your for loop with a while loop....tell me if you need more
details....

Geoffrey L. Goetz wrote:

> I am having a problem with implementing the readLine() method of the
> BufferedReader.  I have an IP socket server written in Delphi C/S 3.0
> running on NT and want to send/receive a string of text to/from this ip
> server with a java client application (not an applet).  This java
> application will eventually be a servlet.  But first I need to get some
> of the basics of Java based IP programming under control.
>
> The problem is that the readLine() quits once a carriage return and/or a
> line feed is 'hit'.  So I decided to create a for loop that will execute
> 100 times until an exception is raised which will force an exit.  (BAD
> CODE)  Don't like counting on the exception and I never know if 100
> executions of readLine() will be enough.  The server application
> (Delphi/NT) will close the connection once the data is sent back if this
> helps...
>
> Any other (GOOD CODE) ways of implementing this?  For the example I am
> using port 80 on yahoo's web server and sending a request for the
> default page of the server, but my needs are not URL based.  I need to
> send and receive multiple strings to and from an open ip socket on a
> server (non standard ports).
>
> Thanks!
> -Geoff
>
> import java.net.*;
> import java.io.*;
> public class ClientSocket {
>   public static void main(String args[]) {
>     try {
>       InetAddress addr = InetAddress.getByName("www.yahoo.com");
>       Socket socket = new Socket(addr, 80);
>       BufferedReader in = new BufferedReader(
>         new InputStreamReader(socket.getInputStream()));
>       PrintWriter out = new PrintWriter(new BufferedWriter(
>         new OutputStreamWriter(socket.getOutputStream())),true);
>       out.println("GET / HTTP/1.0\f\n");
>       try {
>         for(int i = 0; i < 100; i++)
>           System.out.println(in.readLine()); }
>       catch(Exception e) { } }
>     catch(Exception e){
>       e.printStackTrace(); } } }



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