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Message:

socket programming having flushing problem

Posted by chetana on September 14, 2000 at 3:20 AM

i am having a strange problem.i have written a code in socket programming wherein client sends a string to server and server sends back the string converting it to uppercase.the problem is when i run the code and start giving input the program works fine for first 7-8 lines and after that for the next 8-10 line of input no o/p is displayed immediately.the o/p appears together after 10 lines and again everything is all right for the next 8 lines.this cycle continues till i end the program.what is wrong with the code?
i am enclosing the code as well

//for client
import java.io.*;
import java.net.*;
class TCPClient {

public static void main(String argv[]) throws Exception
{
String sentence;
String modifiedSentence;

BufferedReader inFromUser =
new BufferedReader(new InputStreamReader(System.in));

Socket clientSocket = new Socket("hostname", 6789);

DataOutputStream outToServer =
new DataOutputStream(clientSocket.getOutputStream());

BufferedReader inFromServer =
new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
while(true)
{
sentence = inFromUser.readLine();

outToServer.writeBytes(sentence + '\n');

modifiedSentence = inFromServer.readLine();

System.out.println(modifiedSentence);
if(sentence.equals(".")break;
}

clientSocket.close();

}
}

//for server

import java.io.*;
import java.net.*;

class TCPServer {

public static void main(String argv[]) throws Exception
{
String clientSentence;
String capitalizedSentence;

ServerSocket welcomeSocket = new ServerSocket(6789);

while(true) {

Socket connectionSocket = welcomeSocket.accept();

BufferedReader inFromClient =
new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));

DataOutputStream outToClient =
new DataOutputStream(connectionSocket.getOutputStream());
while(true)
{
clientSentence = inFromClient.readLine();

capitalizedSentence = clientSentence.toUpperCase() + '\n';

outToClient.writeBytes(capitalizedSentence);
if(clientsentence.equals(".")break;
}
}
}
}

• flushing problem Markus November 08, 2000 at 5:26 AM (0)
• RE: Buffering problems Kishori Sharan September 15, 2000 at 10:43 AM (0)