diff options
Diffstat (limited to 'pjsip/src/pjsua-lib/pjsua_media.c')
| -rw-r--r-- | pjsip/src/pjsua-lib/pjsua_media.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/pjsip/src/pjsua-lib/pjsua_media.c b/pjsip/src/pjsua-lib/pjsua_media.c index c0a7c3c2..ed5a99ad 100644 --- a/pjsip/src/pjsua-lib/pjsua_media.c +++ b/pjsip/src/pjsua-lib/pjsua_media.c @@ -1369,6 +1369,46 @@ pj_status_t pjsua_media_channel_create_sdp(pjsua_call_id call_id, return status; } +#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0) + /* Check if SRTP is in optional mode and configured to use duplicated + * media, i.e: secured and unsecured version, in the SDP offer. + */ + if (!rem_sdp && + pjsua_var.acc[call->acc_id].cfg.use_srtp == PJMEDIA_SRTP_OPTIONAL && + pjsua_var.acc[call->acc_id].cfg.srtp_optional_dup_offer) + { + unsigned i; + + for (i = 0; i < sdp->media_count; ++i) { + pjmedia_sdp_media *m = sdp->media[i]; + + /* Check if this media is unsecured but has SDP "crypto" + * attribute. + */ + if (pj_stricmp2(&m->desc.transport, "RTP/AVP") == 0 && + pjmedia_sdp_media_find_attr2(m, "crypto", NULL) != NULL) + { + pjmedia_sdp_media *new_m; + + /* Duplicate this media and apply secured transport */ + new_m = pjmedia_sdp_media_clone(pool, m); + pj_strdup2(pool, &new_m->desc.transport, "RTP/SAVP"); + + /* Remove the "crypto" attribute in the unsecured media */ + pjmedia_sdp_media_remove_all_attr(m, "crypto"); + + /* Insert the new media before the unsecured media */ + if (sdp->media_count < PJMEDIA_MAX_SDP_MEDIA) { + pj_array_insert(sdp->media, sizeof(new_m), + sdp->media_count, i, &new_m); + ++sdp->media_count; + ++i; + } + } + } + } +#endif + /* Update currently advertised RTP source address */ pj_memcpy(&call->med_rtp_addr, &tpinfo.sock_info.rtp_addr_name, sizeof(pj_sockaddr)); |