Why is my server not receiving more than one packet?

[MthDc]

I'm trying out SFML networking for the first time, and I've only got experience with networking in Java. While there are obviously similarities, I'm a bit confused about why this code doesn't work:

<--snip--> I have posted a new question in this thread <--snip-->

[AlexAUT]

You are creating your thread in a local scope in your server application, so your threads gets "instantly" deleted. Look at http://www.sfml-dev.org/tutorials/2.0/system-thread.php command mistakes, it´s exactly your problem.

Your sf::Thread has to be a member of the GameServer class.


AlexAUT

[MthDc]

That's embarassing. I didn't scroll down the entire page. Thanks!

[AlexAUT]

. I didn't scroll down the entire page.

Yeah, maybe Laurent should insert a index at the top of every tutorial, like wikipedia does.



AlexAUT

[MthDc]

I have another question (didn't want to make another topic for it to avoid flooding the forums ). For some reason my server only accepts one packet from each client.
I have this code in the server file:

while(true)
        {
                sf::Packet packet;
                if(client_one->receive(packet) == sf::Socket::Done)
                {
                        std::string s;
                        packet >> s;
                        std::cout << "CLIENT_ONE: " << s << std::endl;
                }
                if(client_two->receive(packet) == sf::Socket::Done)
                {
                        std::string s;
                        packet >> s;
                        std::cout << "CLIENT_TWO: " << s << std::endl;
                }
        }

Which recieves the first packet from each client, but no packets which are sent later. Debugging the application seems to indicate the while(true) ends somehow! What could be the issue?

[AlexAUT]

I guess your sockets are in non-blocking mode, and this while-loop happens in a thread? Am I right?


If yes, i think your thread gets destroyed, maybe your GameServer class instance gets destroyed? Because your code example should work.


AlexAUT

[MthDc]

The listener socket on the server is in non-blocking mode, the rest is in blocking mode.
I have allocated the server on the heap and made sure to delete it only after sending the packets, and there was still no output, so that isn't the issue. :/

[AlexAUT]

Hmm, can you send some more code? Because this example doesn't represent your error.


btw there is a logic error in your code: Because your sockets are in blocking mode your server can't receive two packets from one client without receiving a packet from the other client.

AlexAUT

[MthDc]

Thanks to your statement I managed to get this example working (by making them non-blocking). I interpreted the 'blocking state' wrongly in the tutorial: I thought it meant something different.

It doesn't work in my game project though, just in a little text based example. But I'll try to make it work