FreeCalypso > hg > themwi-system-sw

annotate sip-in/mgw_sock.c @ 78:72b7d85d6354

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
sip-in: retransmission error handling
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 20 Sep 2022 18:00:56 -0800
parents 02761f1ae5e5
children 372209628038
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * In this module we implement our local socket interface to themwi-mgw.
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <sys/socket.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <sys/un.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <stdio.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <stdint.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <stdlib.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <syslog.h>
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include "../include/tmgw_ctrl.h"
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 static char tmgw_socket_pathname[] = "/var/gsm/tmgw_socket";
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 int mgw_socket;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 open_tmgw_socket()
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 struct sockaddr_un sa;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 unsigned sa_len;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 int rc;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 mgw_socket = socket(AF_UNIX, SOCK_SEQPACKET, 0);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 if (mgw_socket < 0) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m");
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 return(-1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 fill_sockaddr_un(tmgw_socket_pathname, &sa, &sa_len);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 rc = connect(mgw_socket, (struct sockaddr *) &sa, sa_len);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 if (rc < 0) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 syslog(LOG_ERR, "connect to %s: %m", tmgw_socket_pathname);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 return(-1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 update_max_fd(mgw_socket);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 return(0);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 void
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 mgw_socket_select()
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 struct tmgw_ctrl_resp msg;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 int rc;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 rc = recv(mgw_socket, &msg, sizeof msg, 0);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 if (rc < 0) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 syslog(LOG_CRIT, "error reading from TMGW socket: %m");
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 if (rc != sizeof(struct tmgw_ctrl_resp)) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 syslog(LOG_CRIT,
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 "response packet from TMGW has wrong length: %d bytes",
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 rc);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 }
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
56 process_tmgw_response(&msg);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 }
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
58
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
59 send_req_to_tmgw(msg)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
60 struct tmgw_ctrl_req *msg;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
61 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
62 return send(mgw_socket, msg, sizeof(struct tmgw_ctrl_req), 0);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 47
diff changeset
63 }