[SIPForum-discussion] What should proxies respond to OPTIONS ?

Tomasz Zieleniewski tzieleniewski at gmail.com
Thu Apr 16 08:50:20 UTC 2009


As it is written "SHOULD" doesn't imply "MUST"
generally proxy is method agnostic but in case when your proxy
acts as registrar and subscription server (in other words as UAS)
then it can respond with response containing Allow header with values

Kind regards
- Tomasz Zieleniewski

2009/4/15 Yevgen Krapiva <ykrapiva at gmail.com>:
> Hi again.
> The quotation from RFC about OPTIONS request:
>>   Allow, Accept, Accept-Encoding, Accept-Language, and Supported header
>>   fields SHOULD be present in a 200 (OK) response to an OPTIONS
>>   request.  If the response is generated by a proxy, the Allow header
>>   field SHOULD be omitted as it is ambiguous since a proxy is method
>>   agnostic.
> If Allow header should not be present in proxy's response, then what
> should I reply in Accept* headers ? And how to say that this proxy
> understands SUBSCRIBE and REGISTER methods, for example ?
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