Abhishek, You just need to init the stack and add an account using, pjsua_acc_add<http://www.pjsip.org/pjsip/docs/html/group__PJSUA__LIB__ACC.htm#gad6e01e4e7ac7c8b1d9f629a6189ca2b2>. You don't need to call any other method separately to respond to 401. The stack by itself sends the modified REGISTER with authentication if you have provided the authentication details in the account that you are adding. Regards, Anil. On Wed, Mar 6, 2013 at 5:00 PM, Abhishek Singh <alfred.abhishek at gmail.com>wrote: > Hi, > > What are the api calls that need to be made to generate a SIP REGISTER > message to a Server and respond to the servers 401 challange? I'm trying to > write a SIP client for an Asterisk server and I'm wondering how to do that. > > Regards, > Abhishek > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130306/f8709060/attachment-0001.html>