[ENet-discuss] enet, epoll and libevent

[Uj]

Hi Mihai,

enet_host_service() is essential in Enet, since it handles all the
connectivity of the network engine (reliability, disconnections...)
I think you're about to miss what enet is designed for, and your code just
won't work.

Maybe you should go TCP and I/O ports?

regards,
Ju


On Sat, Aug 1, 2009 at 3:45 PM, Mihai Draghicioiu <
mihai.draghicioiu at gmail.com> wrote:

> Hi all. I'm working on frogmod, a sauerbraten server. At first it used the
> original sauer main loop, then I changed it to use a loop similar to
> BloodFrontier (checks for events then sleeps for 1ms), but now I want to
> make it work with libevent. The way libevent works -- you receive a callback
> for each event that happens on the socket. That way the most cpu is saved
> when there are no connections, and everything is asynchronous (including the
> dns). From what I can see in the enet code -- enet_host_service() and
> enet_socket_wait(), the way to replace the main loop would be something like
> this, for reading:
>
> // basically set a callback for when data is available for reading
> event_set(&evinfo, socket, EV_READ | EV_PERSIST, readcb, NULL);
> event_add(&evinfo, NULL);
>
> void readcb(...) { // handle incoming data. the code is pasted
>         if (event != NULL)
>     {
>         event -> type = ENET_EVENT_TYPE_NONE;
>         event -> peer = NULL;
>         event -> packet = NULL;
>
>         switch (enet_protocol_dispatch_incoming_commands (host, event))
>         {
>         case 1:
>             return 1;
>
>         case -1:
>             perror ("Error dispatching incoming packets");
>
>             return -1;
>
>         default:
>             break;
>         }
>     }
> }
>
> (and something similar for writing)
>
> So basically, it would mean replacing enet_host_service() in the program
> with the libevent setup.
>
> The reason I'm doing this is because libevent also provides me with async
> DNS, http server/client code, and I've already written IRC client code. This
> would also make frogmod modular, able to easily support other enet based
> servers (like blood frontier).
>
> My questions are:
> 1. Is this code the good way to go about it? Basically with libevent you
> add some fds for reading and some for writing, then enter its loop, from
> where it dispatches.
> 2. What would you recommend instead?
>
>
> _______________________________________________
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> ENet-discuss at cubik.org
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>
>
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