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FD_ISSET() code working on pc, but not on psp

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cadaver

Joined: 07 Aug 2005
Posts: 21

Posted: Tue Sep 09, 2008 4:46 am Post subject: FD_ISSET() code working on pc, but not on psp

Code:

bool getServerMessagesDgram()
{

begin:
   read_fds = master;

   timeval tv;

   tv.tv_sec = 0;
   tv.tv_usec = 0;

   if (select(FD_SETSIZE, &read_fds, NULL, NULL, &tv) == -1)
   {
      report_error("select failed.");
      return false;
   }

   if (FD_ISSET(fd_dgram_listen, &read_fds))
   {
      char buf[MESSAGE_LENGTH_SERVER];

      sockaddr_in remoteaddr;

      socklen_t addrlen;

      addrlen = sizeof remoteaddr;

      int nbytes = recvfrom(fd_dgram_listen, buf, MESSAGE_LENGTH_SERVER, 0, (sockaddr*)&remoteaddr, &addrlen);

      if (nbytes > 0)
      {

         // do something useful...

         goto begin; // read all from buffer...

      }

      return true;
   }
   return false;
}

This code is working as it should on the pc. (there is only one socket fd in the master set, I'm listening to)

But on the psp, FD_ISSET is always true, so the function loops forever, and recvfrom forever recieves bytes of length "MESSAGE_LENGTH_SERVER".

Both sets were cleared with

FD_ZERO(&master);
FD_ZERO(&read_fds);

The master was set up with

FD_SET(fd_dgram_listen, &master);

cadaver

Joined: 07 Aug 2005
Posts: 21

Posted: Tue Sep 09, 2008 3:31 pm Post subject:

Seems, select/FD_ISSET don't work with dgram sockets (psp)? I've set the socket now to nonblock (fcntl(fd_dgram_listen, F_SETFL, O_NONBLOCK);) and I'm repeating recvfrom while nbytes > 0. Then it's ok.

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