IMO RFC 3261 does not cleary state that this OPTIONS request should be
answered with 200 OK.
Anyway, if the SBC wants 200 OK, then send 200 OK :-)
klaus
Am 08.06.2011 21:49, schrieb Sean O'Donnell:
> Thanks for the reply.
>
> In our case, the SBC treated the 483 as an error of some sort and wouldn't
> send
> traffic. It wanted a 200/OK.
>
> Anyway, I thought that when a proxy responds to an OPTIONS, its supposed to
> answer with a 200/OK (3261 11.2). Is that correct?
>
> Sean O'Donnell
>
>
>
>
> ---- On Wed, 8 Jun 2011, Klaus Darilion (klaus.mailingli...@pernau.at) wrote:
>
> What is the problem with the default config?
>
> The proxy will respond with 483 as the standard defines. I guess the SBC
> will doe this to check if the proxy is alive and will accept any
> response as "the proxy is alive".
>
> regards
> Klaus
>
>
> Am 08.06.2011 18:28, schrieb Sean O'Donnell:
>> Hi:
>>
>> We're running kamailio 1.5.5 as part of our VoIP infrastructure. One of our
>> service providers
>> has an SBC that sends an OPTIONS messages with a Max-Forwards of 0.
>>
>> Looking at RFC 3261 section 11, this seems to be a valid method of forcing
>> the
>> proxy to respond to the OPTIONS.
>> However, the standard initial sanity checks in most proxy configs will reject
>> this message. I fixed our script
>> by changing to this:
>>
>> # initial sanity checks -- messages with
>> # max_forwards==0, or excessively long requests
>> if (!mf_process_maxfwd_header("10")) {
>> if( method != "OPTIONS" ) {
>> sl_send_reply("483","Too Many Hops");
>> return;
>> };
>> };
>> if ( msg:len > max_len ) {
>> sl_send_reply("513", "Message too big");
>> return;
>> };
>>
>> but does anyone have a better solution?
>>
>> Thanks,
>>
>> Sean O'Donnell
>>
>>
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>> sr-users@lists.sip-router.org
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>
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>
>
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