improve nat64 support for Apple platform

coreapi/bellesip_sal/sal_op_impl.c

@@ -741,7 +741,7 @@ void sal_op_set_manual_refresher_mode(SalOp *op, bool_t enabled){
 bool_t sal_op_is_ipv6(SalOp *op){
 	belle_sip_transaction_t *tr=NULL;
 	belle_sip_header_address_t *contact;
-	belle_sip_request_t *req;
+	
 
 	if (op->refresher)
 		tr=(belle_sip_transaction_t *)belle_sip_refresher_get_transaction(op->refresher);
@@ -750,17 +750,29 @@ bool_t sal_op_is_ipv6(SalOp *op){
 		tr=(belle_sip_transaction_t *)op->pending_client_trans;
 	if (tr==NULL)
 		tr=(belle_sip_transaction_t *)op->pending_server_trans;
-
+	
 	if (tr==NULL){
 		ms_error("Unable to determine IP version from signaling operation.");
 		return FALSE;
 	}
-	req=belle_sip_transaction_get_request(tr);
-	contact=(belle_sip_header_address_t*)belle_sip_message_get_header_by_type(req,belle_sip_header_contact_t);
-	if (!contact){
-		ms_error("Unable to determine IP version from signaling operation, no contact header found.");
+	
+	
+	if (op->refresher) {
+		belle_sip_response_t *resp = belle_sip_transaction_get_response(tr);
+		belle_sip_header_via_t *via = resp ?belle_sip_message_get_header_by_type(resp,belle_sip_header_via_t):NULL;
+		if (!via){
+			ms_error("Unable to determine IP version from signaling operation, no via header found.");
+			return FALSE;
+		}
+		return strchr(belle_sip_header_via_get_host(via),':') != NULL;
+	} else {
+		belle_sip_request_t *req = belle_sip_transaction_get_request(tr);
+		contact=(belle_sip_header_address_t*)belle_sip_message_get_header_by_type(req,belle_sip_header_contact_t);
+		if (!contact){
+			ms_error("Unable to determine IP version from signaling operation, no contact header found.");
+		}
+		return sal_address_is_ipv6((SalAddress*)contact);
 	}
-	return sal_address_is_ipv6((SalAddress*)contact);
 }
 
 bool_t sal_op_is_idle(SalOp *op){

coreapi/linphonecall.c

@@ -1202,10 +1202,12 @@ void linphone_call_set_compatible_incoming_call_parameters(LinphoneCall *call, S
 	}else if (call->params->media_encryption != LinphoneMediaEncryptionZRTP){
 		call->params->media_encryption = LinphoneMediaEncryptionNone;
 	}
-	if (!sal_media_description_has_ipv6(md)){
+	
+	/*in case of nat64, even ipv4 addresses are reachable from v6. Should be enhanced to manage stream by stream connectivity (I.E v6 or v4)*/
+	/*if (!sal_media_description_has_ipv6(md)){
 		ms_message("The remote SDP doesn't seem to offer any IPv6 connectivity, so disabling IPv6 for this call.");
 		call->af = AF_INET;
-	}
+	}*/
 	linphone_call_fix_call_parameters(call, md);
 }
 

tester/call_tester.c

@@ -6326,10 +6326,40 @@ static void call_with_zrtp_configured_callee_side(void) {
 
 	linphone_core_manager_destroy(marie);
 	linphone_core_manager_destroy(pauline);
+}
+
 
+static void v6_call_over_nat_64(void){
+	LinphoneCoreManager* marie;
+	LinphoneCoreManager* pauline;
+	
+	if (!liblinphone_tester_ipv4_available() && liblinphone_tester_ipv6_available()){
+		
+		bool_t liblinphonetester_ipv6_save=liblinphonetester_ipv6; /*this test nee v6*/
+		liblinphonetester_ipv6=TRUE;
+		
+		marie = linphone_core_manager_new("marie_nat64_rc");
+		pauline = linphone_core_manager_new("pauline_nat64_rc");
+		
+		linphone_core_set_user_agent(pauline->lc, "Natted Linphone", NULL);
+		linphone_core_set_user_agent(marie->lc, "Natted Linphone", NULL);
 
+		BC_ASSERT_TRUE(wait_for_until(pauline->lc, NULL, &pauline->stat.number_of_LinphoneRegistrationOk, 1, 2000));
+		BC_ASSERT_TRUE(wait_for_until(pauline->lc, NULL, &marie->stat.number_of_LinphoneRegistrationOk, 1, 2000));
+		
+		
+		BC_ASSERT_TRUE(call(marie,pauline));
+		
+		liblinphone_tester_check_rtcp(marie,pauline);
+		end_call(marie,pauline);
+		linphone_core_manager_destroy(marie);
+		linphone_core_manager_destroy(pauline);
+		liblinphonetester_ipv6=liblinphonetester_ipv6_save; /*this test nee v6*/
+		
+	}else ms_warning("Test skipped, no ipv6 nat64 available");
 }
 
+
 test_t call_tests[] = {
 	TEST_NO_TAG("Early declined call", early_declined_call),
 	TEST_NO_TAG("Call declined", call_declined),
@@ -6343,6 +6373,7 @@ test_t call_tests[] = {
 	TEST_NO_TAG("Call with http proxy", call_with_http_proxy),
 	TEST_NO_TAG("Call with timeouted bye", call_with_timeouted_bye),
 	TEST_NO_TAG("Direct call over IPv6", direct_call_over_ipv6),
+	TEST_NO_TAG("IPv6 call over NAT64", v6_call_over_nat_64),
 	TEST_NO_TAG("Outbound call with multiple proxy possible", call_outbound_with_multiple_proxy),
 	TEST_NO_TAG("Audio call recording", audio_call_recording_test),
 #if 0 /* not yet activated because not implemented */

tester/liblinphone_tester.h

@@ -70,6 +70,7 @@ extern test_suite_t complex_sip_call_test_suite;
 extern int manager_count;
 
 extern int liblinphone_tester_ipv6_available(void);
+extern int liblinphone_tester_ipv4_available(void);
 
 /**
  * @brief Tells the tester whether or not to clean the accounts it has created between runs.

tester/rcfiles/marie_nat64_rc

+[sip]
+sip_port=-1
+sip_tcp_port=-1
+sip_tls_port=-1
+default_proxy=0
+ping_with_options=0
+use_ipv6=1
+composing_idle_timeout=1
+store_ha1_passwd=0 #used for sipp
+
+[auth_info_0]
+username=marie
+userid=marie
+passwd=secret
+realm=sip.example.org
+
+
+[proxy_0]
+reg_proxy=sipv4.example.org;transport=tcp
+reg_route=sipv4.example.org;transport=tcp;lr
+reg_identity="Super Marie" <sip:marie@sip.example.org>
+reg_expires=3600
+reg_sendregister=1
+publish=0
+dial_escape_plus=0
+
+[friend_0]
+url="Paupoche" <sip:pauline@sip.example.org>
+pol=accept
+subscribe=0
+
+
+[rtp]
+audio_rtp_port=18070-28000
+video_rtp_port=28070-38000
+text_rtp_port=39000-49000
+
+[video]
+display=0
+capture=0
+show_local=0
+size=qcif
+enabled=0
+self_view=0
+automatically_initiate=0
+automatically_accept=0
+device=StaticImage: Static picture
+
+[sound]
+echocancellation=0 #to not overload cpu in case of VG
+
+[net]
+dns_srv_enabled=0 #no srv needed in general
+stun_server=stun.linphone.org
+

tester/rcfiles/pauline_nat64_rc

+[sip]
+sip_port=-1
+sip_tcp_port=-1
+sip_tls_port=-1
+default_proxy=0
+ping_with_options=0
+use_ipv6=1
+composing_idle_timeout=1
+
+[auth_info_0]
+username=pauline
+userid=pauline
+passwd=secret
+realm=sip.example.org
+
+
+[proxy_0]
+reg_proxy=sipv4.example.org;transport=tls
+reg_route=sipv4.example.org;transport=tls
+reg_identity=sip:pauline@sip.example.org
+reg_expires=3600
+reg_sendregister=1
+publish=0
+dial_escape_plus=0
+
+#[friend_0]
+#url="Mariette" <sip:marie@sip.example.org>
+#pol=accept
+#subscribe=0
+
+[rtp]
+audio_rtp_port=18070-28000
+video_rtp_port=39072-49000
+
+[video]
+display=0
+capture=0
+show_local=0
+size=qcif
+enabled=0
+self_view=0
+automatically_initiate=0
+automatically_accept=0
+device=StaticImage: Static picture
+
+[sound]
+echocancellation=0 #to not overload cpu in case of VG
+
+[net]
+dns_srv_enabled=0 #no srv needed in general
+stun_server=stun.linphone.org

tester/tester.c

@@ -451,6 +451,25 @@ int liblinphone_tester_ipv6_available(void){
 	return FALSE;
 }
 
+int liblinphone_tester_ipv4_available(void){
+	struct addrinfo *ai=bctbx_ip_address_to_addrinfo(AF_INET,SOCK_STREAM,"212.27.40.240",53);
+	if (ai){
+		struct sockaddr_storage ss;
+		struct addrinfo src;
+		socklen_t slen=sizeof(ss);
+		char localip[128];
+		int port=0;
+		belle_sip_get_src_addr_for(ai->ai_addr,(socklen_t)ai->ai_addrlen,(struct sockaddr*) &ss,&slen,4444);
+		src.ai_addr=(struct sockaddr*) &ss;
+		src.ai_addrlen=slen;
+		bctbx_addrinfo_to_ip_address(&src,localip, sizeof(localip),&port);
+		freeaddrinfo(ai);
+		return strcmp(localip,"127.0.0.1")!=0;
+	}
+	return FALSE;
+}
+
+
 void liblinphone_tester_keep_accounts( int keep ){
 	liblinphone_tester_keep_accounts_flag = keep;
 }

tester/tester_hosts

 94.23.19.176	sip2.linphone.org sip.example.org sipopen.example.org auth.example.org auth1.example.org auth2.example.org altname.linphone.org sip.wildcard1.linphone.org altname.wildcard2.linphone.org 
 2001:41d0:2:14b0::1 sip2.linphone.org sip.example.org sipopen.example.org auth.example.org auth1.example.org auth2.example.org altname.linphone.org sip.wildcard1.linphone.org altname.wildcard2.linphone.org
 188.165.46.90 tunnel.wildcard2.linphone.org
+64:ff9b::94.23.19.176 sipv4.example.org