problem with QByteArray data !

[Con Nít]

i' sorry .

this is the original code :

a part of simplechatclient.cpp :

void SimpleChatClient::sendMessage()
{
	// "<nick> message\n"
	socket->write("<" + nick->text().toLatin1() + "> " + message->text().toLatin1() + "\n");
	message->clear();
}
 
void SimpleChatClient::receiveMessage()
{
	// missing some checks for returns values for the sake of simplicity
	qint64 bytes = buffer->write(socket->readAll());
	// go back as many bytes as we just wrote so that it can be read
	buffer->seek(buffer->pos() - bytes);
	// read only full lines, line by line
	while (buffer->canReadLine())
	{
		QString line = buffer->readLine();
		chat->append(line.simplified());
	}
}

void SimpleChatClient::sendMessage()
{
	// "<nick> message\n"
	socket->write("<" + nick->text().toLatin1() + "> " + message->text().toLatin1() + "\n");
	message->clear();
}

void SimpleChatClient::receiveMessage()
{
	// missing some checks for returns values for the sake of simplicity
	qint64 bytes = buffer->write(socket->readAll());
	// go back as many bytes as we just wrote so that it can be read
	buffer->seek(buffer->pos() - bytes);
	// read only full lines, line by line
	while (buffer->canReadLine())
	{
		QString line = buffer->readLine();
		chat->append(line.simplified());
	}
}

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a part of simplechatsever.cpp :

void SimpleChatServer::receiveMessage()
{
	QTcpSocket* socket = static_cast<QTcpSocket*>(sender());
	QBuffer* buffer = buffers.value(socket);
 
	// missing some checks for returns values for the sake of simplicity
	qint64 bytes = buffer->write(socket->readAll());
	// go back as many bytes as we just wrote so that it can be read
	buffer->seek(buffer->pos() - bytes);
	// read only full lines, line by line
	while (buffer->canReadLine())
	{
		QByteArray line = buffer->readLine();
		foreach (QTcpSocket* connection, connections)
		{
			connection->write(line);
		}
	}
}

void SimpleChatServer::receiveMessage()
{
	QTcpSocket* socket = static_cast<QTcpSocket*>(sender());
	QBuffer* buffer = buffers.value(socket);
	
	// missing some checks for returns values for the sake of simplicity
	qint64 bytes = buffer->write(socket->readAll());
	// go back as many bytes as we just wrote so that it can be read
	buffer->seek(buffer->pos() - bytes);
	// read only full lines, line by line
	while (buffer->canReadLine())
	{
		QByteArray line = buffer->readLine();
		foreach (QTcpSocket* connection, connections)
		{
			connection->write(line);
		}
	}
}

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I had fix only at these methods And declare quint32 blockSize in the header file.

[squidge]

Did you not try to debug your code before posting here?

Eg. does sendMessage transmit a valid message?
Which lines of receiveMessage are actually executed?

[Con Nít]

i try to debug program and i get some error on "if (socket->bytesAvailable() < blockSize) return; ", i delete it from my source code then sendMessage and receiveMessage run on both server and client, but messenge data not receive, i have just known a little about it, but not mastered yet!

help me ,i really need it :-(( thank in advance .

[Con Nít]

UP ... help me :-(( i verry need it :-S

[wysota]

Check what blockSize contains after you stream data to it from the data stream.

By the way, I think the code for the chat needs to be reviewed. Creating a data stream in a slot connected to readyRead() is really a bad idea.