Re: addding new fd in select() for recieving request

2008/6/9  <[email protected]>:
> main()
> {
>        //start listning for client
>        listener = socket(AF_INET, SOCK_STREAM, 0);
>        bind(listener, (struct sockaddr *)&myaddr, sizeof(myaddr));
>        listen(listener, 10)

This is also where you would register this external socket:

          register_readfd(  listener,   listener_callback );

>        while()
>        {

Remember to clear the readfd array:

             numfds = 0;
             FD_ZERO(&read_fds);

and you're not passing in the timeout handling structures.


             block = 0;
>            snmp_select_info(&numfds, &read_fds,
                 tvp, &block);


You also need to do the same for the external sockets:

              netsnmp_external_event_info(numfds,&read_fds,NULL,NULL)

You probably do need to pass the 'tvp' parameter to select, as well as taking
note of the return value:

>             count = select(numfds,&read_fds,0,0, tvp)


The next bit isn't needed.  Replace it with:

              netsnmp_dispatch_external_events( &count, &read_fds, NULL, NULL);

That handles checking whether your socket has anything waiting,
and calls the registered callback.

This should then be followed by

              if ( count > 0 )
                  snmp_read( &read_fds );

to handle "normal" SNMP traffic.

>         }


See the main driving loop ("receive()") of snmpd.c for the model
of this code.

Dave

PS: Please do *NOT* repost your query, just because you
  didn't get a response immediately.   Some of us have real
  work to do, and can't spend all our time providing free
  advice to impatient programmers!

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