connection problem...

[mark smith]

hi

i have problem to connect to server
i run the code and i get:

->connection ok
and after
->not able to connect to server

if i use telnet to connect server, i don't have any problem..

this is the code

public void ConnexionServeur(){ 
        Socket kkSocket = null; 
        PrintWriter out = null; 
        BufferedReader in = null; 
        try { 
            kkSocket = new Socket(getIpServeur(), getPortServeur()); 
            out = new PrintWriter(kkSocket.getOutputStream(), true); 
            in = new BufferedReader(new InputStreamReader(kkSocket.getInputStream())); 
 
            BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in)); 
            String fromServer; 
            String fromUser; 
 
            while ((fromServer = in.readLine()) != null){ 
                String[] words = fromServer.split(":"); 
                if(words[0].equals("succes")) 
                  System.out.println("connection ok"); 
                else if(words[0].equals("lstClient")){ 
                  System.out.println("client list: "); 
                  for(int i=0;i<words[i].length()-1;i++) 
                      System.out.println(words[i] + " "); 
                } 
                System.out.println("serveur: "+ fromServer); 
                fromUser = stdIn.readLine(); 
                if (fromUser != null) { 
                  out.println(fromUser); 
                } 
            } 
            out.close(); 
            in.close(); 
            stdIn.close(); 
            kkSocket.close(); 
        } catch (UnknownHostException e) { 
            System.err.println("host unknow"); 
            System.exit(1); 
        } catch (IOException e) { 
            System.err.println("not able to connect to server"); 
            System.exit(1); 
        } 
    }

any idea?

[Stan James]

I'm not sure how you'd get from the first line that prints to the catch clause without going through the line that prints the server address.

Try writing out the stack trace of any exception you catch. That will point you to the line that failed.

catch (IOException e) 
{ 
    e.printStackTrace();
    System.err.println("something went wrong, lets find out what"); 
    System.exit(1); 
} 

[mark smith]

ya i forget to put code...

i will try to add more information i do:

i'm connect to a gateway to get some information to connect to a server...

in my main i do:

client.ConnexionPasserelle();
client.ConnexionServeur();

public void ConnexionPasserelle(){
        Socket kkSocket = null;
        PrintWriter out = null;
        BufferedReader in = null;
        
        try {
            kkSocket = new Socket(getIpPasserelle(), getPortPasserelle());
            out = new PrintWriter(kkSocket.getOutputStream(), true);
            in = new BufferedReader(new InputStreamReader(kkSocket.getInputStream()));
            
            BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
            String fromPasserelle;
            String fromUser;
            
            while ((fromPasserelle = in.readLine()) != null) {
                /*Connexion a la passerelle*/
                System.out.println("Passerelle>" + fromPasserelle);
                
                String[] words = fromPasserelle.split(":");
                if (words[0].equals("serveur-info")){
                    setIpServeur(words[1]);
                    setPortServeur(Integer.parseInt(words[2]));
                    System.out.println("Passerelle> " + words[1] + ":" + words[2]);
                } else if(words[0].equals("erreur")){
                    System.out.println("Passerelle> probleme divers survenu");
                }
                if (fromPasserelle.equals("Bye")){
                    break;
                }
 
                fromUser="Bye";
                if (fromUser != null) {
                    out.println(fromUser);
                }
                if(fromUser.equals("Bye")){
                    //ConnexionServeur();  /***********here***********/
                    break;
                }
            }
            out.close();
            in.close();
            stdIn.close();
            kkSocket.close();
            
        } catch (UnknownHostException e) {
            System.err.println("Passerelle Inconnue");
            System.exit(1);
        } catch (IOException e) {
            e.printStackTrace();
            System.err.println("Imposible d'etablir une connexion avec la passerelle");
            System.exit(1);
        }
    }

and now the code to connect to the server

  public void ConnexionServeur(){
        Socket kkSocket = null;
        PrintWriter out = null;
        BufferedReader in = null;
        try {
            
            kkSocket = new Socket(getIpServeur(), getPortServeur());
            out = new PrintWriter(kkSocket.getOutputStream(), true);
            in = new BufferedReader(new InputStreamReader(kkSocket.getInputStream()));
            
            BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
            String fromServer;
            String fromUser;
            
            while ((fromServer = in.readLine()) != null){
                System.out.println("serveur> "+ fromServer);
                String[] words = fromServer.split(":");
                if(words[0].equals("succes"))
                    System.out.println("connection reussi");
                else if(words[0].equals("lstClient")){
                    System.out.println("Liste des clients: ");
                    for(int i=0;i<words[i].length()-1;i++){
                        System.out.println(words[i] + " ");
                    }
                }
                System.out.print("client:~>");
                fromUser = stdIn.readLine();
                if (fromUser != null) {
                    out.println(fromUser);
                }
            }
            out.close();
            in.close();
            stdIn.close();
            kkSocket.close();
        } catch (UnknownHostException e) {
            System.err.println("Serveur Inconnue");
            System.exit(1);
        } catch (IOException e) {
            e.printStackTrace();
            System.err.println("Imposible d'etablir une connexion avec le serveur");
            System.exit(1);
        }
    }

the connection seem to stop correctely between client and Passerelle (gateway)
now i connect to the server i get:

serveur> succes:Connection au serveur reussi
connection reussi
client:~>java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:145)
at java.io.BufferedInputStream.read(BufferedInputStream.java:304)
at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:411)
at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:453)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:183)
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 Client.ConnexionServeur(Client.java:105)
at Client.main(Client.java:189)
Imposible d'etablir une connexion avec le serveur

but in my main if i do only

client.ConnexionPasserelle();

don't call ConnectionServeur.....

and uncomment code /**********here*******/

i'm able to connect to the serveur....

any idea?

[mark smith]

resolved...

in the connectionPasserelle, i removed stdIn... i can call connectionServeur in the main...