FreeCalypso > hg > themwi-system-sw
view sip-manual-out/reinvite.c @ 208:f0b90591f67c
doc/RTP-TRAUlike-format: osmo_{fr,efr}_sid_classify() merged
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 16 Apr 2023 17:54:42 -0800 |
parents | b51247739897 |
children |
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/* * Here we handle incoming INVITE requests in the UAS role: even though * we are strictly outbound, BulkVS servers will send us periodic * re-INVITEs as keepalives, and we have to play along. */ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "../libsip/parse.h" #include "../libsip/uas_basic.h" #include "../libsip/out_msg.h" extern char call_id[]; static void invite_correct_call(req, ess, sin) struct sip_pkt_rx *req; struct uas_parse_hdrs *ess; struct sockaddr_in *sin; { struct sip_msg_out resp; int rc; printf("Received re-INVITE for our call, responding with 200\n"); start_response_out_msg(&resp, "200 OK"); rc = add_resp_basic_headers(&resp, ess, req->req_method); if (rc < 0) { fprintf(stderr, "sending 200 response: msg length exceeded\n"); return; } out_msg_finish(&resp); sip_tx_packet(&resp, sin); } static void invite_unknown_call(req, ess, sin) struct sip_pkt_rx *req; struct uas_parse_hdrs *ess; struct sockaddr_in *sin; { struct sip_msg_out resp; int rc; printf("Received INVITE for unknown call, responding with 405\n"); start_response_out_msg(&resp, "405 This gateway is outbound only"); rc = add_resp_basic_headers(&resp, ess, req->req_method); if (rc < 0) { fprintf(stderr, "sending 405 response: msg length exceeded\n"); return; } out_msg_finish(&resp); sip_tx_packet(&resp, sin); } void handle_invite_req(req, ess, sin) struct sip_pkt_rx *req; struct uas_parse_hdrs *ess; struct sockaddr_in *sin; { if (!strcmp(ess->call_id, call_id)) invite_correct_call(req, ess, sin); else invite_unknown_call(req, ess, sin); }