[Freeswitch-dev] switch_stun_random_string returns identical strings on two calls randomly

[Seven Du]

cool, I used it and no problem been found till now.

On Wednesday, February 1, 2012 at 12:03 AM, Anthony Minessale wrote:

> ya, you're right.
> Fixed in tree....
> 
> 
> On Tue, Jan 31, 2012 at 3:51 AM, Seven Du <dujinfang at gmail.com (mailto:dujinfang at gmail.com)> wrote:
> > Hi,
> > 
> > I tried to replace the following function which I copied somewhere in msrp.c
> > with  switch_stun_random_string but I found
> > sometimes switch_stun_random_string returns identical strings on two
> > sequential calls, with the following function I never found, so I still use
> > it.
> > 
> > By looking the code I understand srand seed is time based so it's possible
> > to return duplicate random string, but I
> > found switch_stun_random_string used in some places other than stun, just
> > curious would it cause problems?
> > 
> > void random_string(char *buf, switch_size_t size)
> > {
> > long val[4];
> > int x;
> > 
> > for (x = 0; x < 4; x++)
> > val[x] = random();
> > snprintf(buf, size, "%08lx%08lx%08lx%08lx", val[0], val[1], val[2], val[3]);
> > *(buf+size) = '\0';
> > }
> > 
> > Thanks.
> > 
> > --
> > About: http://about.me/dujinfang
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> 
> 
> -- 
> Anthony Minessale II
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