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arrange to set correct local interface in SDP and contact.

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Use proxy received/rport if possible in INVITEs.
This commit is contained in:
Simon Morlat 2009-09-03 15:53:04 +02:00
parent 63181848bf
commit b202a6e9cf
3 changed files with 105 additions and 32 deletions
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79
linphone/coreapi/linphonecore.c
View file

@ -776,32 +776,14 @@ void linphone_core_get_local_ip(LinphoneCore *lc, const char *dest, char *result
strncpy(result,linphone_core_get_nat_address(lc),LINPHONE_IPADDR_SIZE);
return;
}
if (linphone_core_get_firewall_policy(lc)==LINPHONE_POLICY_USE_STUN) {
if (lc->sip_conf.ipv6_enabled){
ms_warning("stun support is not implemented for ipv6");
}else{
/* we no more use stun for sip socket*/
#if 0
int mport=0;
ms_message("doing stun lookup for local address...");
if (stun_get_localip(lc,sock,linphone_core_get_sip_port(lc),result,&mport)){
if (!lc->net_conf.nat_sdp_only)
eXosip_masquerade_contact(result,mport);
return;
}
ms_warning("stun lookup failed, falling back to a local interface...");
#endif
}
}
if (linphone_core_get_local_ip_for(dest,result)==0)
return;
/*else fallback to exosip routine that will attempt to find the most realistic interface */
if (eXosip_guess_localip(lc->sip_conf.ipv6_enabled ? AF_INET6 : AF_INET,result,LINPHONE_IPADDR_SIZE)<0){
/*default to something */
strncpy(result,lc->sip_conf.ipv6_enabled ? "::1" : "127.0.0.1",LINPHONE_IPADDR_SIZE);
ms_error("Could not find default routable ip address !");
}
/*
eXosip_masquerade_contact(NULL,0);
*/
}
}
const char *linphone_core_get_primary_contact(LinphoneCore *lc)
@ -1274,7 +1256,7 @@ void linphone_set_sdp(osip_message_t *sip, const char *sdpmesg){
osip_message_set_content_length(sip,clen);
}
LinphoneProxyConfig * linphone_core_goes_through_known_proxy(LinphoneCore *lc, const char *uri){
LinphoneProxyConfig * linphone_core_lookup_known_proxy(LinphoneCore *lc, const char *uri){
const MSList *elem;
LinphoneProxyConfig *found_cfg=NULL;
osip_from_t *parsed_uri;
@ -1292,13 +1274,36 @@ LinphoneProxyConfig * linphone_core_goes_through_known_proxy(LinphoneCore *lc, c
return found_cfg;
}
static void fix_contact(osip_message_t *msg, const char *localip){
static void fix_contact(osip_message_t *msg, const char *localip, LinphoneProxyConfig *dest_proxy){
osip_contact_t *ctt=NULL;
const char *ip=NULL;
int port=5060;
osip_message_get_contact(msg,0,&ctt);
if (ctt!=NULL){
osip_free(ctt->url->host);
ctt->url->host=osip_strdup(localip);
if (dest_proxy!=NULL){
/* if we know the request will go to a known proxy for which we are registered,
we can use the same contact address as in the register */
linphone_proxy_config_get_contact(dest_proxy,&ip,&port);
}else{
ip=localip;
port=linphone_core_get_sip_port(dest_proxy->lc);
}
if (ip!=NULL){
osip_free(ctt->url->host);
ctt->url->host=osip_strdup(ip);
}
if (port!=0){
char tmp[10]={0};
char *str;
snprintf(tmp,sizeof(tmp)-1,"%i",port);
if (ctt->url->port!=NULL)
osip_free(ctt->url->port);
ctt->url->port=osip_strdup(tmp);
osip_contact_to_str(ctt,&str);
ms_message("Contact has been fixed to %s",str);
osip_free(str);
}
}
}
@ -1315,6 +1320,7 @@ int linphone_core_invite(LinphoneCore *lc, const char *url)
osip_from_t *parsed_url2=NULL;
osip_to_t *real_parsed_url=NULL;
char *real_url=NULL;
LinphoneProxyConfig *dest_proxy=NULL;
if (lc->call!=NULL){
lc->vtable.display_warning(lc,_("Sorry, having multiple simultaneous calls is not supported yet !"));
@ -1328,16 +1334,23 @@ int linphone_core_invite(LinphoneCore *lc, const char *url)
gstate_new_state(lc, GSTATE_CALL_ERROR, NULL);
return -1;
}
if (proxy!=NULL) {
from=linphone_proxy_config_get_identity(proxy);
dest_proxy=linphone_core_lookup_known_proxy(lc,real_url);
if (proxy!=dest_proxy && dest_proxy!=NULL) {
ms_message("Overriding default proxy setting for this call:");
ms_message("The used identity will be %s",linphone_proxy_config_get_identity(dest_proxy));
}
if (dest_proxy!=NULL)
from=linphone_proxy_config_get_identity(dest_proxy);
else if (proxy!=NULL)
from=linphone_proxy_config_get_identity(proxy);
/* if no proxy or no identity defined for this proxy, default to primary contact*/
if (from==NULL) from=linphone_core_get_primary_contact(lc);
err=eXosip_call_build_initial_invite(&invite,real_url,from,
route,"Phone call");
if (err<0){
ms_warning("Could not build initial invite");
goto end;
@ -1352,7 +1365,7 @@ int linphone_core_invite(LinphoneCore *lc, const char *url)
/*try to be best-effort in giving real local or routable contact address,
except when the user choosed to override the ipaddress */
if (linphone_core_get_firewall_policy(lc)!=LINPHONE_POLICY_USE_NAT_ADDRESS)
fix_contact(invite,lc->call->localip);
fix_contact(invite,lc->call->localip,dest_proxy);
barmsg=ortp_strdup_printf("%s %s", _("Contacting"), real_url);
lc->vtable.display_status(lc,barmsg);
@ -1731,6 +1744,10 @@ int linphone_core_accept_call(LinphoneCore *lc, const char *url)
ms_error("Fail to build answer for call: err=%i",err);
return -1;
}
/*try to be best-effort in giving real local or routable contact address,
except when the user choosed to override the ipaddress */
if (linphone_core_get_firewall_policy(lc)!=LINPHONE_POLICY_USE_NAT_ADDRESS)
fix_contact(msg,call->localip,NULL);
/*if a sdp answer is computed, send it, else send an offer */
sdpmesg=call->sdpctx->answerstr;
if (sdpmesg==NULL){

55
linphone/coreapi/misc.c
View file

@ -745,3 +745,58 @@ int linphone_core_wake_up_possible_already_running_instance(
}
return -1;
}
int linphone_core_get_local_ip_for(const char *dest, char *result){
int err,tmp;
struct addrinfo hints;
struct addrinfo *res=NULL;
struct sockaddr_storage addr;
ortp_socket_t sock;
#ifdef __APPLE_CC__
int s;
#else
socklen_t s;
#endif
memset(&hints,0,sizeof(hints));
hints.ai_family=PF_UNSPEC;
hints.ai_socktype=SOCK_DGRAM;
/*hints.ai_flags=AI_NUMERICHOST|AI_CANONNAME;*/
err=getaddrinfo(dest,"5060",&hints,&res);
if (err!=0){
ms_error("getaddrinfo() error: %s",gai_strerror(err));
return -1;
}
if (res==NULL){
ms_error("bug: getaddrinfo returned nothing.");
return -1;
}
sock=socket(res->ai_family,SOCK_DGRAM,0);
tmp=1;
err=setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&tmp,sizeof(int));
if (err<0){
ms_warning("Error in setsockopt: %s",strerror(errno));
}
err=connect(sock,res->ai_addr,res->ai_addrlen);
if (err<0) {
ms_error("Error in connect: %s",strerror(errno));
freeaddrinfo(res);
close(sock);
return -1;
}
freeaddrinfo(res);
res=NULL;
s=sizeof(addr);
err=getsockname(sock,(struct sockaddr*)&addr,&s);
if (err!=0) {
ms_error("Error in getsockname: %s",strerror(errno));
close(sock);
return -1;
}
err=getnameinfo((struct sockaddr *)&addr,s,result,LINPHONE_IPADDR_SIZE,NULL,0,NI_NUMERICHOST);
if (err!=0){
ms_error("getnameinfo error: %s",strerror(errno));
}
close(sock);
ms_message("Local interface to reach %s is %s.",dest,result);
return 0;
}

3
linphone/coreapi/private.h
View file

@ -134,6 +134,7 @@ void linphone_core_run_stun_tests(LinphoneCore *lc, LinphoneCall *call);
void linphone_core_write_friends_config(LinphoneCore* lc);
void linphone_proxy_config_update(LinphoneProxyConfig *cfg);
void linphone_proxy_config_get_contact(LinphoneProxyConfig *cfg, const char **ip, int *port);
LinphoneProxyConfig * linphone_core_lookup_known_proxy(LinphoneCore *lc, const char *uri);
int linphone_core_get_local_ip_for(const char *dest, char *result);
#endif /* _PRIVATE_H */