FreeCalypso > hg > themwi-system-sw
view sip-in/bye_out.c @ 124:7e04d28fae8b
sip-in: default use-100rel to no
BulkVS servers act badly when we send a reliable 180 Ringing response
to an incoming call, even though they advertise 100rel support in
the Supported header in the INVITE packet, and we probably won't be
implementing 100rel for outbound because doing per-the-spec PRACK
as a UAC is just too burdensome. Therefore, we need to consider
100rel extension as not-really-supported in themwi-system-sw.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 01 Oct 2022 15:54:50 -0800 |
parents | c1c94b7fc2e2 |
children | 4e16aeafbfbf |
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/* * In this module we implement our UAC functionality of sending BYE. */ #include <sys/types.h> #include <sys/socket.h> #include <sys/time.h> #include <netinet/in.h> #include <arpa/inet.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <syslog.h> #include "../libsip/parse.h" #include "../libsip/resp_ident.h" #include "../libsip/out_msg.h" #include "call.h" extern struct call *find_call_by_sip_id(); extern struct in_addr sip_bind_ip; extern unsigned sip_bind_port; extern unsigned max_forwards; extern unsigned sip_linger_acked; extern unsigned sip_linger_error; fill_bye_out_msg(msg, call) struct sip_msg_out *msg; struct call *call; { char strbuf[80]; int rc; rc = start_request_out_msg_urilen(msg, "BYE", call->from_uri, call->from_uri_len); if (rc < 0) return rc; sprintf(strbuf, "SIP/2.0/UDP %s:%u", inet_ntoa(sip_bind_ip), sip_bind_port); rc = out_msg_add_header(msg, "Via", strbuf); if (rc < 0) return rc; rc = out_msg_add_header(msg, "From", call->invite_to); if (rc < 0) return rc; rc = out_msg_add_header(msg, "To", call->invite_from); if (rc < 0) return rc; rc = out_msg_add_header(msg, "Call-ID", call->sip_call_id); if (rc < 0) return rc; rc = out_msg_add_header(msg, "CSeq", "1 BYE"); if (rc < 0) return rc; sprintf(strbuf, "%u", max_forwards); rc = out_msg_add_header(msg, "Max-Forwards", strbuf); if (rc < 0) return rc; out_msg_finish(msg); return 0; } void initiate_bye(call) struct call *call; { struct sip_msg_out msg; int rc; rc = fill_bye_out_msg(&msg, call); if (rc < 0) { syslog(LOG_ERR, "outgoing BYE request msg length exceeded"); call->sip_state = SIP_STATE_MSG_SIZE_ERR; sip_mark_end_time(call, sip_linger_error); transition_dead_sip(call); return; } sip_tx_packet(&msg, &call->udp_sin); call->sip_state = SIP_STATE_BYE_SENT; call->sip_tx_count = 1; } void process_sip_response(msg, sin) struct sip_pkt_rx *msg; struct sockaddr_in *sin; { struct sip_resp_ident rid; struct call *call; int rc; rc = sip_resp_extract_ident(msg, &rid); if (rc < 0) { syslog(LOG_ERR, "SIP %03u response: bad or missing %s header", msg->status_code, rid.error_field); return; } call = find_call_by_sip_id(rid.call_id); if (!call) { syslog(LOG_ERR, "SIP %03u response: unmatched Call-ID", msg->status_code); return; } if (rid.cseq_num != 1 || strcmp(rid.cseq_method, "BYE")) { syslog(LOG_ERR, "UAC received %03u response with unknown CSeq %u %.32s", msg->status_code, rid.cseq_num, rid.cseq_method); return; } if (msg->status_code < 200) return; if (call->sip_state == SIP_STATE_BYE_SENT) { call->sip_state = SIP_STATE_ENDED; if (msg->status_code <= 299) sip_mark_end_time(call, sip_linger_acked); else sip_mark_end_time(call, sip_linger_error); transition_dead_sip(call); } }