TcpSocket and QTextStream does not print first line of data

[nbkhwjm]

I have the following function:

void Rsh::receiveMessage() {
 
	QString responseLine;
	QString response;
 
	QTextStream in(tcpSocket);
 
	if( !tcpSocket->canReadLine() )
	{
        	return;
        }
 
	while( tcpSocket->canReadLine() ){
        	responseLine = tcpSocket->readLine();
		response.append(responseLine);
	}
		ui.ResultsTextEdit->append(tr("%1").arg(response));
}

void Rsh::receiveMessage() {

	QString responseLine;
	QString response;
	
	QTextStream in(tcpSocket);

	if( !tcpSocket->canReadLine() )
	{
        	return;
        }

	while( tcpSocket->canReadLine() ){
        	responseLine = tcpSocket->readLine();
		response.append(responseLine);
	}
		ui.ResultsTextEdit->append(tr("%1").arg(response));
}

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This works to pull data from the connection, however the first complete line of text is always missing...

any ideas?

[jacek]

Where do you use "in"?

[nbkhwjm]

Thats the only one....

[jacek]

Thats the only one....

Could you elaborate? You create QTextStream instance and never use it and most likely that's what eats your first line.

[nbkhwjm]

You are correct... The first line was in the "in" buffer.... while i was only printing the "response".

This seems to work fine...

Thanks for the pointer.

void Rsh::receiveMessage() {
 
	QString responseLine;
	QString response;
 
	QTextStream in(tcpSocket);
 
	if( !tcpSocket->canReadLine() )
	{
        	return;
        }
 
	while( tcpSocket->canReadLine() ){
        	responseLine = in.readAll();
		response.append(responseLine);
	}
		ui.ResultsTextEdit->append(response);
}

void Rsh::receiveMessage() {

	QString responseLine;
	QString response;
	
	QTextStream in(tcpSocket);

	if( !tcpSocket->canReadLine() )
	{
        	return;
        }

	while( tcpSocket->canReadLine() ){
        	responseLine = in.readAll();
		response.append(responseLine);
	}
		ui.ResultsTextEdit->append(response);
}

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