QTcpSocket reading problem.

[vani.pv]

I have an application using QTcpSocket.

for reading data i am using readline() as follows.

socket.write(buf,buf.length);
while(!socket.canReadLine());
socket.read(rbuf,socket.bytesAvailable);

But there is no data in my buf after reading and my gui getting freeze at bcoz of while loop.

can any one tell me how to wait until data available in the socket?

Thanks...

[Qtonimo]

Use readyRead Signal. Write a class, which has several members (QByteArray buffer, QTcpSocket socket, ...) and a slot readyReadSlot(). Connect
the readyRead Signal of the socket to your slot.

Call socket.readAll() in your readyReadSlot() and append the returned QByteArray to your buffer member. Then check, if all data is in your buffer. If yes then process your data, if not return and wait for the next readyRead Signal of your socket.

[decipher]

on button click do this

sock.connectToHost(ipaddr, port);
QObject::connect(&sock, SIGNAL(readyRead()), this, SLOT(read()));

sock.connectToHost(ipaddr, port);
QObject::connect(&sock, SIGNAL(readyRead()), this, SLOT(read()));

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In read()

while(sock.canReadLine())
          {
          QString line;
          line.setLength(4096);
          line = sock.readLine(); // read the line of text
        line=line.trimmed();
 
       qDebug()<<"read"<<line;
          }

while(sock.canReadLine())
          {
          QString line;
          line.setLength(4096);
          line = sock.readLine(); // read the line of text
        line=line.trimmed();
          
       qDebug()<<"read"<<line;
          }

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Hope this helps
On exit click
close socket
disconnect object

[viulskiez]

Don't forget to read QAbstractSocket documentation and learn about blocking and nonblocking socket.

[vani.pv]

Thanks to all.........