31 Mar
2009
31 Mar
'09
11:57 a.m.
Andrei Pelinescu-Onciul schrieb:
On Mar 30, 2009 at 16:06, Daniel-Constantin Mierla
<miconda(a)gmail.com> wrote:
How can this be fixed automatically? How will the proxy know when then
body ends and the next message starts?
regards
klaus
PS: IMO the server should respond with "400 wrong content length" if
accessing of the body is required and the length is wrong
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.