Re: [Gaim-devel] Early autodetection of IP address?

[Evan S. <ev...@dr...>]

On Apr 3, 2007, at 9:44 AM, Daniel Atallah wrote:

> On 4/3/07, Mark Doliner <ma...@ki...> wrote:
> Of course, it would be best if upnp and pmp are non-blocking and  
> Gaim could
> talk to your router in the background shortly after startup while your
> accounts are merrily logging in.
>
> The upnp stuff is non-blocking.

The majority of upnp is non-blocking, but gaim_upnp_discover() says:
> 	/* TODO: Non-blocking! */
> 	if((hp = gethostbyname(HTTPMU_HOST_ADDRESS)) == NULL) {

and is called by gaim_upnp_get_public_ip() the first time it's used.

The pmp stuff is blocking, though its blocking operations are  
specifically limited to 0.25 seconds in duration (pending being  
nonblocking, which I haven't done any work on yet but will look at  
eventually if someone - preferably someone who has actual experience  
writing nonblocking sockets code - doesn't beat me to it).

For the record, I've never seen a significant delay as a result of  
either block of code... but I noticed that it was being done when I  
was working in network.c and was surprised that the public IP was  
determined long before it was ever needed and might never be used at  
all.

-Evan