Empty body is ok for inside dialog INFO request. Per RFC 2976 A 200 OK response MUST be sent by a UAS for an INFO request with no message body if the INFO request was successfully received for an existing call So you could use pjsua_call_send_request() to send INFO, and catch tsx response at calback on_call_tsx_state(). And if your UA recv INFO with empty body in call, you need respond 200 OK, otherwise 481 regards, Gang On Wed, May 20, 2009 at 2:23 AM, M.S. <hamstiede at yahoo.de> wrote: > Hi Gang Liu, > i found a code snippet in pjusa for info request, but this code will > send a DTMF string(dtmf-relay). Question, do you know the right "sip-style" > to send > the info request without DTMF, for the KeepAlive i think i need a empty > request. > It is possible to use another msg_data.content_type? > What do you think? > > thank you > mark > > const pj_str_t <http://www.pjsip.org/pjlib/docs/html/structpj__str__t.htm> SIP_INFO = pj_str <http://www.pjsip.org/pjlib/docs/html/group__PJ__PSTR.htm#g20fa0c4d9ccddd0822a775730cf4a867>("INFO"); > 03703 pj_str_t <http://www.pjsip.org/pjlib/docs/html/structpj__str__t.htm> digits; > > > 03719 digits = pj_str <http://www.pjsip.org/pjlib/docs/html/group__PJ__PSTR.htm#g20fa0c4d9ccddd0822a775730cf4a867>(buf); > 03720 for (i=0; i<digits.slen <http://www.pjsip.org/pjlib/docs/html/structpj__str__t.htm#46788480bdb4080083dcc8965811e015>; ++i) { > 03721 pjsua_msg_data <http://www.pjsip.org/pjsip/docs/html/structpjsua__msg__data.htm> msg_data; > 03722 > char body[80]; > 03723 > 03724 pjsua_msg_data_init <http://www.pjsip.org/pjsip/docs/html/group__PJSUA__LIB__BASE.htm#gc5d917f5344530d8eb3442450ddccd2d>(&msg_data); > 03725 msg_data.content_type <http://www.pjsip.org/pjsip/docs/html/structpjsua__msg__data.htm#cd4b9fa12c35d21f870635d9873fa596> = pj_str <http://www.pjsip.org/pjlib/docs/html/group__PJ__PSTR.htm#g20fa0c4d9ccddd0822a775730cf4a867>("application/dtmf-relay"); > 03726 > 03727 pj_ansi_snprintf(body, sizeof(body), > 03728 > "Signal=%c\r\n" > 03729 "Duration=160", > 03730 buf[i]); > 03731 msg_data.msg_body <http://www.pjsip.org/pjsip/docs/html/structpjsua__msg__data.htm#9e8f81b8932ea6630b819632cb4bcdca> = pj_str <http://www.pjsip.org/pjlib/docs/html/group__PJ__PSTR.htm#g20fa0c4d9ccddd0822a775730cf4a867>(body); > 03732 > 03733 status = pjsua_call_send_request <http://www.pjsip.org/pjsip/docs/html/group__PJSUA__LIB__CALL.htm#g2bc70969ec7b6c7a63e9f220cd7110d8>(current_call, &SIP_INFO, > 03734 > &msg_data); > > > > > ------------------------------ > *Von:* Gang Liu <gangban.lau at gmail.com> > *An:* pjsip list <pjsip at lists.pjsip.org> > *Gesendet:* Dienstag, den 19. Mai 2009, 15:44:29 Uhr > *Betreff:* Re: [pjsip] End to End KeepAlive > > If both agent are your program, you could use OPTIONS or INFO request to > check signal path. > session-timer not supported by pjsip current version. > > regards, > Gang > > On Tue, May 19, 2009 at 3:57 PM, M.S. <hamstiede at yahoo.de> wrote: > >> Hi, >> I have this situation: >> >> SIP-Agent 1 <---> Registrar <-----> SIP Agent 2 >> If i kill the connection (cut the network) between Registrar and SIP >> Agent 2, Agent 1 will >> not close the connection. >> >> If it possible to make a simple End - to End Keep Alive. I tryed REINVITE >> and UPDATE for Agent 1 >> but both will rebuild my media streams (not really good for the voice) >> >> regards >> >> Mark >> >> >> >> _______________________________________________ >> 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 >> >> > > > _______________________________________________ > 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/20090520/e8a06313/attachment.html>
