Messages

1

Network / Re: Unhandled exception: Access violation

« on: July 24, 2013, 12:11:58 am »

Oops!
Found it. The last for-loop deleting all the sockets, was in the while loop which uses the sockets. This is truly wrong

2

Network / Re: Unhandled exception: Access violation

« on: July 23, 2013, 11:54:02 pm »

Have you ever heard of the magical tool debugger? Try to run it through that and find out what causes the problem.

1. I'm using Visual Studio. It has a debugger. But it sayed nothing helpful.
just

Access violation when reading at position 0xFEEEFEEE.

!

Also you shouldn't use manual memory management, but rather make use of RAII and smart pointers.

2. I think manual memory management is okay for the moment

3

Network / Unhandled exception: Access violation

« on: July 23, 2013, 11:14:11 pm »

Hi,
I've made a little chatprogramm(just for fun ) and I have this little problem you can see in the title.

the full error message is
"Unhandled exception at 0x773f15de in sfmlserver.exe: 0xC0000005: Access violation."
It pops up everytime my client is connecting to my server (both on my computer).

Actually I don't even know if the connection causes the problem.
code of the server:

#include<SFML\Audio.hpp>
#include<SFML\Graphics.hpp>
#include<SFML\Network.hpp>
#include<iostream>
#include<string>
#include<vector>
#include<conio.h>
int main()
{
        std::cout<<"server is online"<<std::endl;
        sf::TcpListener list;
        sf::SocketSelector select;
        std::vector<sf::TcpSocket*> clients;
        list.listen(50000);
        select.add(list);
        while(true){
                if(select.wait()){
                        if(select.isReady(list)){
                                sf::TcpSocket *socket = new sf::TcpSocket;
                                list.accept(*socket);
                                sf::Packet packet;
                                std::string id;
                                if(socket->receive(packet)==sf::Socket::Done)
                                                packet>>id;

                                std::cout<< id << " has joined the chatroom" << std::endl;
                                clients.push_back(socket);
                                select.add(*socket);
                        }
                        else{
                                for(int i=0;i<clients.size();i++){
                               
                                        if(select.isReady(*clients[i])){
                                                sf::Packet pack;
                                                if(clients[i]->receive(pack)==sf::Socket::Done){
                                                        std::string text;
                                                        for(int j=0;i<clients.size();j++){
                                                                if(j!=i){
                                                                        clients[j]->send(pack);
                                                                }      
                                                        }
                                                }
                                        }
                                }
                        }
                }
        for(std::vector<sf::TcpSocket*>::iterator it=clients.begin(); it!=clients.end();it++)
                delete *it;
        }
        system("pause");
        return 0;
}