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annotate sip-out/retrans.c @ 275:def9f6e4f49e default tip

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doc/Use-outside-USA: Fake-NANP-numbers article is here
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 27 Nov 2023 21:49:19 -0800
parents e54b0a9e322f
children
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1 /*
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2 * In this module we handle retransmission of our outgoing SIP UAC packets.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/socket.h>
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7 #include <sys/time.h>
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8 #include <netinet/in.h>
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9 #include <stdio.h>
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10 #include <stdint.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include <syslog.h>
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15 #include "../include/gsm48_const.h"
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16 #include "../include/out_routes.h"
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17 #include "../libsip/out_msg.h"
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18 #include "call.h"
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19
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20 extern unsigned cfg_retrans_count;
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21 extern unsigned sip_linger_timeout;
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22 extern unsigned sip_linger_bye_out_err;
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23 extern struct call *call_list;
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24
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25 void
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26 run_periodic_retrans()
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27 {
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28 struct call *call;
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29 struct sip_msg_out msg;
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30
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31 for (call = call_list; call; call = call->next) {
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32 switch (call->sip_state) {
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33 case SIP_STATE_INV_SENT:
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34 if (call->sip_tx_count < cfg_retrans_count) {
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35 fill_invite_req_msg(&msg, call);
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36 sip_tx_packet(&msg, &call->udp_sin);
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37 call->sip_tx_count++;
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38 } else {
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39 syslog(LOG_ERR,
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40 "outbound INVITE retrans timeout");
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41 call->overall_state = OVERALL_STATE_TEARDOWN;
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42 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU,
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43 GSM48_CC_CAUSE_DEST_OOO);
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44 disconnect_tmgw(call);
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45 call->sip_state = SIP_STATE_ACCEPT_100;
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46 sip_mark_end_time(call, sip_linger_timeout);
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47 }
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48 break;
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49 case SIP_STATE_CANCEL_SENT:
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50 if (call->sip_tx_count < cfg_retrans_count) {
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51 fill_cancel_req_msg(&msg, call);
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52 sip_tx_packet(&msg, &call->udp_sin);
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53 call->sip_tx_count++;
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54 } else {
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55 syslog(LOG_ERR,
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56 "outbound CANCEL retrans timeout");
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57 call->sip_state = SIP_STATE_ACCEPT_200;
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58 sip_mark_end_time(call, sip_linger_timeout);
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59 }
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60 break;
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61 case SIP_STATE_BYE_SENT:
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62 if (call->sip_tx_count < cfg_retrans_count) {
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63 fill_bye_req_msg(&msg, call);
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64 sip_tx_packet(&msg, &call->udp_sin);
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65 call->sip_tx_count++;
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66 } else {
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67 syslog(LOG_ERR, "outbound BYE retrans timeout");
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68 call->sip_state = SIP_STATE_ENDED;
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69 sip_mark_end_time(call, sip_linger_bye_out_err);
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70 }
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71 break;
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72 }
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73 }
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74 }