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Fix algorithm for IP version selection on outgoing calls. In particular, the "prefer_ipv6" option wasn't really taken into account.

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Simon Morlat 2018-03-11 17:20:59 +01:00
parent 8ef84da0a0
commit 3fd706a702
1 changed files with 28 additions and 30 deletions
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58
coreapi/linphonecall.c
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@ -1216,44 +1216,42 @@ void linphone_call_create_op(LinphoneCall *call){
* Choose IP version we are going to use for RTP streams IP address advertised in SDP.
* The algorithm is as follows:
* - if ipv6 is disabled at the core level, it is always AF_INET
* - Otherwise, if the destination address for the call is an IPv6 address, use IPv6.
* - Otherwise, if the call is done through a known proxy config, then use the information obtained during REGISTER
* - Otherwise if the destination address for the call is an IPv6 address, use IPv6.
* to know if IPv6 is supported by the server.
**/
static void linphone_call_outgoing_select_ip_version(LinphoneCall *call, LinphoneAddress *to, LinphoneProxyConfig *cfg){
char ipv4[LINPHONE_IPADDR_SIZE];
char ipv6[LINPHONE_IPADDR_SIZE];
bool_t have_ipv6 = FALSE;
bool_t have_ipv4 = FALSE;
call->af = AF_UNSPEC;
if (linphone_core_get_local_ip_for(AF_INET, NULL, ipv4) == 0){
have_ipv4 = TRUE;
}
if (linphone_core_ipv6_enabled(call->core)){
if (sal_address_is_ipv6((SalAddress*)to)){
call->af=AF_INET6;
}else if (cfg && cfg->op){
call->af=sal_op_get_address_family(cfg->op);
}else{
call->af=AF_UNSPEC;
if (linphone_core_get_local_ip_for(AF_INET6, NULL, ipv6) == 0){
have_ipv6 = TRUE;
}
if (call->af == AF_UNSPEC) {
char ipv4[LINPHONE_IPADDR_SIZE];
char ipv6[LINPHONE_IPADDR_SIZE];
bool_t have_ipv6 = FALSE;
bool_t have_ipv4 = FALSE;
/*check connectivity for IPv4 and IPv6*/
if (linphone_core_get_local_ip_for(AF_INET6, NULL, ipv6) == 0){
have_ipv6 = TRUE;
}
if (linphone_core_get_local_ip_for(AF_INET, NULL, ipv4) == 0){
have_ipv4 = TRUE;
}
if (have_ipv6){
if (!have_ipv4) {
call->af = AF_INET6;
}else if (lp_config_get_int(call->core->config, "rtp", "prefer_ipv6", 1)){ /*this property tells whether ipv6 is prefered if two versions are available*/
call->af = AF_INET6;
}else{
call->af = AF_INET;
}
}else call->af = AF_INET;
/*fill the media_localip default value since we have it here*/
strncpy(call->media_localip,call->af == AF_INET6 ? ipv6 : ipv4, LINPHONE_IPADDR_SIZE);
if (cfg && cfg->op){
/*we can determine from the proxy connection whether IPv6 works - this is the most reliable*/
call->af = sal_op_get_address_family(cfg->op);
}else if (sal_address_is_ipv6((SalAddress*)to)){
call->af = AF_INET6;
}
if (lp_config_get_int(call->core->config, "rtp", "prefer_ipv6", 1) == 0 && have_ipv4){
/* This is the case where ipv4 is to be prefered if both are available.*/
call->af = AF_INET; /*we'll use IPv4*/
ms_message("prefer_ipv6 is set to false, as both IP versions are available we are going to use IPv4");
}
if (call->af == AF_UNSPEC){
call->af = have_ipv6 ? AF_INET6 : AF_INET;
}
}else call->af=AF_INET;
/*fill the media_localip default value since we have it here*/
strncpy(call->media_localip,call->af == AF_INET6 ? ipv6 : ipv4, LINPHONE_IPADDR_SIZE);
}
/**