[Kamailio-Devel] [SR-Dev] content length

[Andrei Pelinescu-Onciul]

On Mar 30, 2009 at 16:06, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
> Hello,
> 
> the data lumps system is critically affected if content-length is wrong 
> for UDP. The anchor_lump() calls abort() in the case content-length is 
> higher than actually body length.

It's true that anchor_lump() calls abort if the offset passed to it is
outside the message, but I don't see where anchor_lump() is called with
a value depending on Content-Length (at least in sip-router and ser).

> This can be prevented by called sanity 
> module to check the content length, however, I consider being too 
> drastic to have abort in such case, it would be better to return an 
> error and let the sip router process other messages. Opinions?
> 
> Checking sip-router sources, it faces same issue.
> 
> Another option would be to correct the C-L value locally, but the right 
> one is that phone vendor fixes its side.

It's fixed automatically in sip-router, if the destination protocol is
tcp or tls.

Andrei