[lwip-users] Re: the problem continious with my TCP connection socket

[Oscar F]

Hello again, i have tested to accept the connection without select, and only connect to the first connection.

aSocket[0]= accept(lSocket[0],(struct sockaddr*)&sRemoteAddr[0],(
> socklen_t *)sizeof(sRemoteAddr[0]));

then the next

aSocket[1]= accept(lSocket[1],(struct sockaddr*)&sRemoteAddr[1],(
> socklen_t *)sizeof(sRemoteAddr[1]));

but here dosen´t work and the program break!!


Can i create 8 socket TCP in a single task? maybe this is the problem

Regards
Oscar

On Mon, Sep 28, 2009 at 9:49 PM, Oscar F <address@hidden> wrote:

Hello everybody, i have more problem with the connection TCP. The last time i achive to wait for accept connection. today i have the program of the customer (is closed) and i can´t accept the connection. I´ve installed the wireshark to see something but i don´t understand.
My apllication must be accept 8 socket 3 for request and 5 for answer.

The code is that, but i don´t know if the coorect configuration and the correct way to accept the connection.

portTASK_FUNCTION( vProtocolRTUServer, pvParameters )
{
    //Local variables of function ==> maybe put global
    int i,maxfd,maxfd2,numconection,ret;

    struct sockaddr_in sLocalAddr[NUM_SOCKET];
    struct sockaddr_in sRemoteAddr[NUM_SOCKET];

    fd_set readset, acceptset;


    //Create the NUM_SOCKET=8 connection to wait the accept
    for(i=0;i<NUM_SOCKET;i++)
    {
          //Create the 8 socket
        lSocket[i] = lwip_socket(AF_INET, SOCK_STREAM, 0);
        if (lSocket[i]<0)
         return;


          //Bind to this socket
          memset((char *)&sLocalAddr[i], 0, sizeof(sLocalAddr[i]));
        sLocalAddr[i].sin_family = AF_INET;
        sLocalAddr[i].sin_len = sizeof(sLocalAddr[i]);
        sLocalAddr[i].sin_addr.s_addr = htonl(INADDR_ANY); //!!!!CUIDADO SINO VALE CUALQUIER DIRECCION CAMBIAR!!!!
        sLocalAddr[i].sin_port = PortConnection[i]; //Ports of the table


        if (lwip_bind(lSocket[i],(struct sockaddr *)&sLocalAddr[i], sizeof(sLocalAddr[i])) < 0)
         {
           //Error. Close the socket
           lwip_close(lSocket[i]);
         }

        //Listen to the 8 socket.Maximum 10 connection for socket
        if ( lwip_listen(lSocket[i],10) != 0 )
         {
           lwip_close(lSocket[i]);
         }
      }

      //Using of select function to wait for the accept connection
      FD_ZERO(&acceptset);
      FD_ZERO(&readset);

      maxfd=0;
      maxfd2=0;
      numconection=0;
      //Add the 8 socket to wait the accept connection
      for(i=0;i<NUM_SOCKET;i++)
       {
        FD_SET(lSocket[i], &acceptset);
        if (lSocket[i]> maxfd)
         maxfd = lSocket[i];
       }

//The application wait here. Never accept any connection.

      do{
          // Check for received packets on configured sockets (blocking )
          ret = select(maxfd+1, &acceptset, NULL, NULL, NULL);

          if (ret > 0) //No error
            {
              for(i=0;i<NUM_SOCKET;i++)
              {
                 if (FD_ISSET(lSocket[i], &acceptset))
                  {
                   //connection receive ==> then accept
                   aSocket[i]= accept(lSocket[i],(struct sockaddr*)&sRemoteAddr[i],(socklen_t *)sizeof(sRemoteAddr[i]));
                   if(aSocket[i]>0)
                    {
                       if (i<3)
                       {
                        FD_SET(aSocket[i], &readset); //Add the three socket to wait for the receive data
                        if (aSocket[i]> maxfd2)
                         maxfd2 = aSocket[i];
                       }
                       numconection++;
                    }
                   else
                      lwip_close(aSocket[i]);

                   //FD_CLR(lSocket[i], &acceptset);
                  }
                }
              }
          else
           {
               CloseConnectionPC(aSocket,lSocket );
               return;
           }
      }while ( numconection <NUM_SOCKET );


Can you help me. I´m lost.

thank
Oscar