FreeCalypso > hg > themwi-system-sw
view mncc/gsm_call.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 | 660126bd5f59 |
children |
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/* * In this module we implement allocation, freeing and retrieval * of gsm_call structures. */ #include <sys/types.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <syslog.h> #include "struct.h" #include "gsm_call.h" struct gsm_call *call_list_head; static uint32_t mt_callref; struct gsm_call * find_gsm_callref(callref) uint32_t callref; { struct gsm_call *call; for (call = call_list_head; call; call = call->next) { if (call->gc_flag) continue; if (call->callref == callref) return call; } return 0; } struct gsm_call * find_socket_call(conn, ref) struct socket_conn *conn; uint32_t ref; { struct gsm_call *call; for (call = call_list_head; call; call = call->next) { if (call->gc_flag) continue; if (call->socket == conn && call->socket_ref == ref) return call; } return 0; } struct gsm_call * create_gsm_call(callref) uint32_t callref; { struct gsm_call *call; call = malloc(sizeof(struct gsm_call)); if (call) { bzero(call, sizeof(struct gsm_call)); call->callref = callref; call->next = call_list_head; call_list_head = call; } return call; } uint32_t alloc_mt_callref() { mt_callref++; if (mt_callref > 0x7FFFFFFF) mt_callref = 1; return mt_callref; } struct gsm_call * create_new_mt_call() { uint32_t callref; for (;;) { callref = alloc_mt_callref(); if (!find_gsm_callref(callref)) break; } syslog(LOG_DEBUG, "creating new MT callref 0x%x", callref); return create_gsm_call(callref); } gc_call_list() { struct gsm_call *call, **cp; for (cp = &call_list_head; call = *cp; ) { if (call->gc_flag) { *cp = call->next; free(call); continue; } cp = &call->next; } }