[inline] On 1/24/08, Thomas Plotkowiak <plotti at gmx.net> wrote: > > I stumbled upon a simple problem and am looking for an elegant solution to > this: > > I have two clients that want to call eachother exactly in the same moment. > What happens of course is that they end up making each one call to the > other and have two calls instead of one. > > what happens is: > A calls B --> B accepts > B calls A --> A accepts > > what I want instead is: > > A calls B --> B accepts > B calls A --> A rejects since it figures out its already connected to B. > > My way of solving this problem is in the callback function > on_incoming_call: > 1. Get all calls so far by using pjsua_call_get_count<http://pjsip.org/pjsip/docs/html/group__PJSUA__LIB__CALL.htm#g97b0aaeb8f1e6feb8d6794a105abbdc9>(). > For all calls - 1, cause the last one is the incoming one do: > 2. Check if the corresponding ci. remote_info<http://pjsip.org/pjsip/docs/html/structpjsua__call__info.htm#cc7af5223a21349f5a5a8023cdc39812>.ptr > is different then the current incoming new_ci. remote_info<http://pjsip.org/pjsip/docs/html/structpjsua__call__info.htm#cc7af5223a21349f5a5a8023cdc39812>.ptr > by matching those 2 strings > If they match forbid the call (with 403 message) since I am either > already connected to this person, > or am currently connecting to this person > Else accept with 200 code > > Is there a more elegant way of doing this, since I dont think the > stringmatching is a very good way of checking that fact. A slightly more elegant way of comparing the info's would be to compare the two URIs: - first parse the strings into URIs with pjsip_parse_uri() - compare the URIs with pjsip_uri_cmp(PJSIP_URI_IN_FROMTO_HDR, uri1, uri2) cheers, -benny Cheers > Thomas > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080124/5146a4a0/attachment.html
