Re: [Sip-implementors] Usage of "User-Agent" in SIP responses

2020-04-28 Thread Maxim Sobolev
Thanks, Paul for the detailed response, it more or less matches my own understanding. Do you think for the sake of implementation it can be compressed down to something like that: - if you are making SIP RESPONSE to an incoming request use "Server", otherwise if generating new REQUEST use

[Sip-implementors] Query on 500 Server Internal Error

2020-04-28 Thread Ranjit Avasarala
Hi SIP Experts there are numerous scenarios where a SIP server would respond with 500 Internal Server Error response. Troubleshooting the 500 error is not easy due to the lack of any reason in the response though some servers do append Reason header. e.g. 500 Internal Server Error

Re: [Sip-implementors] Usage of "User-Agent" in SIP responses

2020-04-28 Thread Ranjit Avasarala
Hi Paul, Maxim I agree with both and from the implementations i have seen so far, I see User-Agent header being inserted by UE devices like smartphones : e.g. User-Agent: LG IMS client: 6.0 and Server header is inserted by the intermediate servers like CSCF, AS, MRF, etc: E.g. Server: CSCF

Re: [Sip-implementors] Usage of "User-Agent" in SIP responses

2020-04-28 Thread Paul Kyzivat
On 4/28/20 1:08 PM, Maxim Sobolev wrote: Hi, I've noticed that in the last few years few implementations have gained popularity who use User-Agent in both requests and responses. Instead of User-Agent in requests and Server in responses which I always believed (perhaps incorrectly) to be the

[Sip-implementors] Usage of "User-Agent" in SIP responses

2020-04-28 Thread Maxim Sobolev
Hi, I've noticed that in the last few years few implementations have gained popularity who use User-Agent in both requests and responses. Instead of User-Agent in requests and Server in responses which I always believed (perhaps incorrectly) to be the right way of doing it. The argument there is