Using the sip.zip released under "Project Home" gets to the point where it tries to connect to the remote sip server. However when it receives a 401 unauthorized message, it doesn't accept the challenge but instead just sends an ACK.

(I tried using the lastest SVN, but it fails before sending any packets to the sip server)

I can confirm latest SVN version is also is unable to respond to the authentication challenge to its SIP REGISTER message. Odd, because the MjSip UA project webpage claims "it implements standard Digest authentication (when requested)". I'll try to look into it tomorrow unless someone else does in another timezone...

Ooops, there is a response to the challenge, but some fields seem to be inproperly set.

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Has this issue been resolved?

Ok, well the problem is not that hard to solve, sip packets are just malformed as previously mentioned by szocske. Whats the process of posting an update?

Is this bugger solved?

Is this bug resolved and fix is available in the latest version?

That not bug ! All work for me - I take that problem before. Solution: in sip.conf in [general] add string realm=IP addres of your asterisk. Regards.

I am using windows XP and red5 0.8 I installed red5 latest version sip_r53. And I got an error in my red5 console given below. RegisterAgent: Registration failure: 403 Forbidden (Bad auth) [SIPUser] SIP Registration failure 403 Forbidden (Bad auth) RegisterAgent: Failed Registration stop try. And it's not log in to the system. I am using asterisk as a relam. my sip server is also running and I used my own id in red5 url rtmp://192.168.0.35/sip.

Anyone have any idea regarding this error so please help me to make it out.

I solved that error... It's my asterisk's problem I passed wrong username and password to my asterisk server Now it's working properly thanks.