java socket programming problem
- by mk.persia
Hi,
what's wrong with my code?
sorry about my bad English
package sockettest;
import java.io.*;
import java.net.*;
class sevr implements Runnable{
public void run() {
ServerSocket sSkt = null;
Socket skt = null;
BufferedReader br = null;
BufferedWriter bw = null;
try{
System.out.println("Server: is about to create socket");
sSkt = new ServerSocket(6666);
System.out.println("Server: socket created");
}
catch(IOException e){
System.out.println("Server: socket creation failure");
}
try{
System.out.println("Server: is listening");
skt = sSkt.accept();
System.out.println("Server: Connection Established");
}
catch(IOException e){
System.out.println("Server: listening failed");
}
try{
System.out.println("Server: creating streams");
br = new BufferedReader(new InputStreamReader(skt.getInputStream()));
bw = new BufferedWriter(new OutputStreamWriter(skt.getOutputStream()));
System.out.println("Server: stream done");
}
catch(IOException e){
System.out.println("Server: stream failed");
}
System.out.println("Server: reading the request");
try{
String line = null;
while((line =br.readLine()) != null){
System.out.println("Server: client said- "+ line);
}
}
catch(IOException e){
System.out.println("Server: reading failed");
}
System.out.println("Server: reading fished");
System.out.println("Server: responding");
try{
bw.write("Hi! I am server!");
}
catch(IOException e){
System.out.println("Server: responding failed");
}
System.out.println("Server: responding finished");
System.out.println("Server: is finishing");
try {
br.close();
bw.close();
skt.close();
sSkt.close();
} catch (IOException e) {
System.out.println("Server: finishing failed");
}
System.out.println("Server: done");
}
}
class clnt implements Runnable{
public void run() {
Socket skt = null;
BufferedReader br = null;
BufferedWriter bw = null;
try{
System.out.println("Client: about to create socket");
skt = new Socket(InetAddress.getLocalHost(),6666);
System.out.println("Client: socket created");
}
catch(IOException e){
System.out.println("Client: socket creation failure");
}
try{
System.out.println("Client: creating streams");
br = new BufferedReader(new InputStreamReader(skt.getInputStream()));
bw = new BufferedWriter(new OutputStreamWriter(skt.getOutputStream()));
System.out.println("Client: stream done");
}
catch(IOException e){
System.out.println("Client: stream failed");
}
System.out.println("Client: requesting");
try{
bw.write("Hi! I am Client!");
}
catch(IOException e){
System.out.println("Client: requesting failed");
}
System.out.println("Client: requesting finished");
System.out.println("Client: reading the respond");
try{
String line = null;
while((line =br.readLine()) != null){
System.out.println("Client: server said- "+ line);
}
}
catch(IOException e){
System.out.println("Client: reading failed");
}
System.out.println("Client: reading fished");
System.out.println("Clientrver: is finishing");
try {
br.close();
bw.close();
skt.close();
} catch (IOException e) {
System.out.println("Client: finishing failed");
}
System.out.println("Client: done");
}
}
public class Main {
public static void main(String[] args) {
System.out.println("Main started");
Thread sThread = new Thread(new sevr());
Thread cThread = new Thread(new clnt());
sThread.start();
cThread.start();
try {
sThread.join();
cThread.join();
} catch (InterruptedException ex) {
System.out.println("joining failed");
}
System.out.println("Main done");
}
}
output:
Main started
Server: is about to create socket
Client: about to create socket
Client: socket created
Client: creating streams
Server: socket created
Server: is listening
Server: Connection Established
Server: creating streams
Server: stream done
Server: reading the request
Client: stream done
Client: requesting
Client: requesting finished
Client: reading the respond
and it waits here forever!
