C++ BELLE_SIP_HEADER_ADDRESS函数代码示例

belle_sip_header_contact_t* sal_op_create_contact(SalOp *op){
	belle_sip_header_contact_t* contact_header;
	belle_sip_uri_t* contact_uri;

	if (sal_op_get_contact_address(op)) {
		contact_header = belle_sip_header_contact_create(BELLE_SIP_HEADER_ADDRESS(sal_op_get_contact_address(op)));
	} else {
		contact_header= belle_sip_header_contact_new();
	}

	if (!(contact_uri=belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(contact_header)))) {
		/*no uri, just creating a new one*/
		contact_uri=belle_sip_uri_new();
		belle_sip_header_address_set_uri(BELLE_SIP_HEADER_ADDRESS(contact_header),contact_uri);
	}

	belle_sip_uri_set_user_password(contact_uri,NULL);
	belle_sip_uri_set_secure(contact_uri,sal_op_is_secure(op));
	if (op->privacy!=SalPrivacyNone){
		belle_sip_uri_set_user(contact_uri,NULL);
	}
	belle_sip_header_contact_set_automatic(contact_header,op->base.root->auto_contacts);
	if (op->base.root->uuid){
		if (belle_sip_parameters_has_parameter(BELLE_SIP_PARAMETERS(contact_header),"+sip.instance")==0){
			char *instance_id=belle_sip_strdup_printf("\"<urn:uuid:%s>\"",op->base.root->uuid);
			belle_sip_parameters_set_parameter(BELLE_SIP_PARAMETERS(contact_header),"+sip.instance",instance_id);
			belle_sip_free(instance_id);
		}
	}
	return contact_header;
}

static void testInviteMessageWithTelUri(void) {
	const char* raw_message = "INVITE tel:11234567888;phone-context=vzims.fr SIP/2.0\r\n"\
							"Via: SIP/2.0/UDP 10.23.17.117:22600;branch=z9hG4bK-d8754z-4d7620d2feccbfac-1---d8754z-;rport=4820;received=202.165.193.129\r\n"\
							"Max-Forwards: 70\r\n"\
							"Contact: <sip:[email protected]:4820>\r\n"\
							"To: <tel:+3311234567888;tot=titi>\r\n"\
							"From: tel:11234567888;tag=werwrw\r\n"\
							"Call-ID: Y2NlNzg0ODc0ZGIxODU1MWI5MzhkNDVkNDZhOTQ4YWU.\r\n"\
							"CSeq: 1 INVITE\r\n"\
							"Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO\r\n"\
							"c: application/sdp\r\n"\
							"Supported: replaces\r\n"\
							"Authorization: Digest username=\"003332176\", realm=\"sip.ovh.net\", nonce=\"24212965507cde726e8bc37e04686459\", uri=\"sip:sip.ovh.net\", response=\"896e786e9c0525ca3085322c7f1bce7b\", algorithm=MD5, opaque=\"241b9fb347752f2\"\r\n"\
							"User-Agent: X-Lite 4 release 4.0 stamp 58832\r\n"\
							"Content-Length: 230\r\n\r\n";
	belle_sip_request_t* request;
	belle_sip_message_t* message = belle_sip_message_parse(raw_message);
	char* encoded_message = belle_sip_object_to_string(BELLE_SIP_OBJECT(message));
	belle_sip_object_unref(BELLE_SIP_OBJECT(message));
	message = belle_sip_message_parse(encoded_message);
	request = BELLE_SIP_REQUEST(message);
	CU_ASSERT_STRING_EQUAL(belle_sip_request_get_method(request),"INVITE");
	CU_ASSERT_PTR_NOT_NULL(belle_sip_message_get_header(message,"Contact"));
	CU_ASSERT_PTR_NOT_NULL(belle_sip_message_get_header(message,"Authorization"));
	CU_ASSERT_PTR_NOT_NULL(belle_sip_message_get_header(message,"Content-Type"));
	check_uri_and_headers(message);
	CU_ASSERT_PTR_NOT_NULL(belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(belle_sip_message_get_header_by_type(message,belle_sip_header_from_t))));
	CU_ASSERT_PTR_NOT_NULL(belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(belle_sip_message_get_header_by_type(message,belle_sip_header_to_t))));
	CU_ASSERT_STRING_EQUAL(belle_generic_uri_get_opaque_part(belle_sip_request_get_absolute_uri(request)),"11234567888;phone-context=vzims.fr");
	belle_sip_object_unref(message);
	belle_sip_free(encoded_message);
}

belle_sip_request_t* sal_op_build_request(SalOp *op,const char* method) {
	belle_sip_header_from_t* from_header;
	belle_sip_header_to_t* to_header;
	belle_sip_provider_t* prov=op->base.root->prov;
	belle_sip_request_t *req;
	belle_sip_uri_t* req_uri;
	char token[10];


	if (strcmp("REGISTER",method)==0 || op->privacy==SalPrivacyNone) {
		from_header = belle_sip_header_from_create(BELLE_SIP_HEADER_ADDRESS(sal_op_get_from_address(op))
												,belle_sip_random_token(token,sizeof(token)));
	} else {
		from_header=belle_sip_header_from_create2("Anonymous <sip:[email protected]>",belle_sip_random_token(token,sizeof(token)));
	}
	/*make sure to preserve components like headers or port*/
	req_uri = (belle_sip_uri_t*)belle_sip_object_clone((belle_sip_object_t*)belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(sal_op_get_to_address(op))));
	belle_sip_uri_set_secure(req_uri,sal_op_is_secure(op));

	to_header = belle_sip_header_to_create(BELLE_SIP_HEADER_ADDRESS(sal_op_get_to_address(op)),NULL);

	req=belle_sip_request_create(
					req_uri,
					method,
					belle_sip_provider_create_call_id(prov),
					belle_sip_header_cseq_create(20,method),
					from_header,
					to_header,
					belle_sip_header_via_new(),
					70);

	if (op->privacy & SalPrivacyId) {
		belle_sip_header_p_preferred_identity_t* p_preferred_identity=belle_sip_header_p_preferred_identity_create(BELLE_SIP_HEADER_ADDRESS(sal_op_get_from_address(op)));
		belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),BELLE_SIP_HEADER(p_preferred_identity));
	}
	if (strcmp("REGISTER",method)!=0 && op->privacy!=SalPrivacyNone ){
		belle_sip_header_privacy_t* privacy_header=belle_sip_header_privacy_new();
		if (op->privacy&SalPrivacyCritical)
			belle_sip_header_privacy_add_privacy(privacy_header,sal_privacy_to_string(SalPrivacyCritical));
		if (op->privacy&SalPrivacyHeader)
			belle_sip_header_privacy_add_privacy(privacy_header,sal_privacy_to_string(SalPrivacyHeader));
		if (op->privacy&SalPrivacyId)
			belle_sip_header_privacy_add_privacy(privacy_header,sal_privacy_to_string(SalPrivacyId));
		if (op->privacy&SalPrivacyNone)
			belle_sip_header_privacy_add_privacy(privacy_header,sal_privacy_to_string(SalPrivacyNone));
		if (op->privacy&SalPrivacySession)
			belle_sip_header_privacy_add_privacy(privacy_header,sal_privacy_to_string(SalPrivacySession));
		if (op->privacy&SalPrivacyUser)
			belle_sip_header_privacy_add_privacy(privacy_header,sal_privacy_to_string(SalPrivacyUser));
		belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),BELLE_SIP_HEADER(privacy_header));
	}
	belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),sal_make_supported_header(op->base.root));
	return req;
}

int sal_call_decline(SalOp *op, SalReason reason, const char *redirection /*optional*/){
	belle_sip_response_t* response;
	belle_sip_header_contact_t* contact=NULL;
	int status=sal_reason_to_sip_code(reason);
	belle_sip_transaction_t *trans;

	if (reason==SalReasonRedirect){
		if (redirection!=NULL) {
			if (strstr(redirection,"sip:")!=0) status=302;
			else status=380;
			contact= belle_sip_header_contact_new();
			belle_sip_header_address_set_uri(BELLE_SIP_HEADER_ADDRESS(contact),belle_sip_uri_parse(redirection));
		} else {
			ms_error("Cannot redirect to null");
		}
	}
	trans=(belle_sip_transaction_t*)op->pending_server_trans;
	if (!trans) trans=(belle_sip_transaction_t*)op->pending_update_server_trans;
	if (!trans){
		ms_error("sal_call_decline(): no pending transaction to decline.");
		return -1;
	}
	response = sal_op_create_response_from_request(op,belle_sip_transaction_get_request(trans),status);
	if (contact) belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),BELLE_SIP_HEADER(contact));
	belle_sip_server_transaction_send_response(BELLE_SIP_SERVER_TRANSACTION(trans),response);
	return 0;
}

static int is_contact_address_acurate(const belle_sip_refresher_t* refresher,belle_sip_request_t* request) {
	belle_sip_header_contact_t* contact;
	if ((contact = get_first_contact_in_unknown_state(request))){
		/*check if contact ip/port is consistant with  public channel ip/port*/
		int channel_public_port = refresher->transaction->base.channel->public_port;
		int contact_port = belle_sip_uri_get_listening_port(belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(contact)));
		const char* channel_public_ip = refresher->transaction->base.channel->public_ip;
		const char* contact_ip = belle_sip_uri_get_host(belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(contact)));

		if (channel_public_port == contact_port
				&& channel_public_ip && contact_ip
				&& strcmp(channel_public_ip,contact_ip) == 0) {
			/*nothing to do contact is accurate*/
			belle_sip_header_contact_set_unknown(contact,FALSE);
			return TRUE;
		} else {
			belle_sip_message("Refresher [%p]: contact address [%s:%i] does not match channel address[%s:%i] on channel [%p]"	,refresher
					,contact_ip
					,contact_port
					,channel_public_ip
					,channel_public_port
					,refresher->transaction->base.channel);
			return FALSE;
		}
	} else {
		belle_sip_message("Refresher [%p]:  has no contact for request [%p].", refresher,request);
		return TRUE;
	}
}

void sal_add_presence_info(SalOp *op, belle_sip_message_t *notify, SalPresenceModel *presence) {
	char *contact_info;
	char *content = NULL;
	size_t content_length;

	if (presence){
		belle_sip_header_from_t *from=belle_sip_message_get_header_by_type(notify,belle_sip_header_from_t);
		contact_info=belle_sip_uri_to_string(belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from)));
		op->base.root->callbacks.convert_presence_to_xml_requested(op, presence, contact_info, &content);
		belle_sip_free(contact_info);
		if (content == NULL) return;
	}

	belle_sip_message_remove_header(BELLE_SIP_MESSAGE(notify),BELLE_SIP_CONTENT_TYPE);
	belle_sip_message_remove_header(BELLE_SIP_MESSAGE(notify),BELLE_SIP_CONTENT_LENGTH);
	belle_sip_message_set_body(BELLE_SIP_MESSAGE(notify),NULL,0);
	
	if (content){
		belle_sip_message_add_header(BELLE_SIP_MESSAGE(notify)
								,BELLE_SIP_HEADER(belle_sip_header_content_type_create("application","pidf+xml")));
		belle_sip_message_add_header(BELLE_SIP_MESSAGE(notify)
								,BELLE_SIP_HEADER(belle_sip_header_content_length_create(content_length=strlen(content))));
		belle_sip_message_set_body(BELLE_SIP_MESSAGE(notify),content,content_length);
		ms_free(content);
	}
}

void sal_op_process_refer(SalOp *op, const belle_sip_request_event_t *event, belle_sip_server_transaction_t *server_transaction){
	belle_sip_request_t* req = belle_sip_request_event_get_request(event);
	belle_sip_header_refer_to_t *refer_to= belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_refer_to_t);
	belle_sip_header_referred_by_t *referred_by= belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_referred_by_t);
	belle_sip_response_t* resp;
	belle_sip_uri_t* refer_to_uri;
	char* refer_to_uri_str;
	
	ms_message("Receiving REFER request on op [%p]",op);
	if (refer_to) {
		refer_to_uri=belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(refer_to));

		if (refer_to_uri && belle_sip_uri_get_header(refer_to_uri,"Replaces")) {
			sal_op_set_replaces(op,belle_sip_header_replaces_create2(belle_sip_uri_get_header(refer_to_uri,"Replaces")));
			belle_sip_uri_remove_header(refer_to_uri,"Replaces");
		}
		if (referred_by){
			sal_op_set_referred_by(op,referred_by);
		}
		refer_to_uri_str=belle_sip_uri_to_string(refer_to_uri);
		resp = sal_op_create_response_from_request(op,req,202);
		belle_sip_server_transaction_send_response(server_transaction,resp);
		op->base.root->callbacks.refer_received(op->base.root,op,refer_to_uri_str);
		belle_sip_free(refer_to_uri_str);
	} else {
		ms_warning("cannot do anything with the refer without destination\n");
		resp = sal_op_create_response_from_request(op,req,400);
		belle_sip_server_transaction_send_response(server_transaction,resp);
	}

}

static void caller_process_response_event(void *user_ctx, const belle_sip_response_event_t *event){
	belle_sip_client_transaction_t* client_transaction = belle_sip_response_event_get_client_transaction(event);
	belle_sip_header_from_t* from=belle_sip_message_get_header_by_type(belle_sip_response_event_get_response(event),belle_sip_header_from_t);
	belle_sip_header_cseq_t* invite_cseq=belle_sip_message_get_header_by_type(belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(client_transaction)),belle_sip_header_cseq_t);
	belle_sip_request_t* ack;
	belle_sip_dialog_t* dialog;
	int status;
	if (!belle_sip_uri_equals(BELLE_SIP_URI(user_ctx),belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from)))) {
		belle_sip_message("Message [%p] not for caller, skipping",belle_sip_response_event_get_response(event));
		return; /*not for the caller*/
	}

	status = belle_sip_response_get_status_code(belle_sip_response_event_get_response(event));
	belle_sip_message("caller_process_response_event [%i]",status);
	if (BC_ASSERT_PTR_NOT_NULL(client_transaction)) {
		dialog = belle_sip_transaction_get_dialog(BELLE_SIP_TRANSACTION(client_transaction));
		if (BC_ASSERT_PTR_NOT_NULL(dialog)) {
			BC_ASSERT_PTR_EQUAL(caller_dialog,dialog);
			if (belle_sip_dialog_get_state(dialog) == BELLE_SIP_DIALOG_NULL) {
				BC_ASSERT_EQUAL(status,100, int, "%d");
			} else if (belle_sip_dialog_get_state(dialog) == BELLE_SIP_DIALOG_EARLY){
				BC_ASSERT_EQUAL(status,180, int, "%d");
				/*send 200ok from callee*/
				belle_sip_server_transaction_send_response(inserv_transaction,ok_response);
				belle_sip_object_unref(ok_response);
				ok_response=NULL;
			} else if (belle_sip_dialog_get_state(dialog) == BELLE_SIP_DIALOG_CONFIRMED) {

void sal_process_authentication(SalOp *op) {
	belle_sip_request_t* initial_request=belle_sip_transaction_get_request((belle_sip_transaction_t*)op->pending_auth_transaction);
	belle_sip_request_t* new_request;
	bool_t is_within_dialog=FALSE;
	belle_sip_list_t* auth_list=NULL;
	belle_sip_auth_event_t* auth_event;
	belle_sip_response_t *response=belle_sip_transaction_get_response((belle_sip_transaction_t*)op->pending_auth_transaction);
	belle_sip_header_from_t *from=belle_sip_message_get_header_by_type(initial_request,belle_sip_header_from_t);
	belle_sip_uri_t *from_uri=belle_sip_header_address_get_uri((belle_sip_header_address_t*)from);

	if (strcasecmp(belle_sip_uri_get_host(from_uri),"anonymous.invalid")==0){
		/*prefer using the from from the SalOp*/
		from_uri=belle_sip_header_address_get_uri((belle_sip_header_address_t*)sal_op_get_from_address(op));
	}

	if (op->dialog && belle_sip_dialog_get_state(op->dialog)==BELLE_SIP_DIALOG_CONFIRMED) {
		new_request = belle_sip_dialog_create_request_from(op->dialog,initial_request);
		if (!new_request)
			new_request = belle_sip_dialog_create_queued_request_from(op->dialog,initial_request);
		is_within_dialog=TRUE;
	} else {
		new_request=initial_request;
		belle_sip_message_remove_header(BELLE_SIP_MESSAGE(new_request),BELLE_SIP_AUTHORIZATION);
		belle_sip_message_remove_header(BELLE_SIP_MESSAGE(new_request),BELLE_SIP_PROXY_AUTHORIZATION);
	}
	if (new_request==NULL) {
		ms_error("sal_process_authentication() op=[%p] cannot obtain new request from dialog.",op);
		return;
	}

	if (belle_sip_provider_add_authorization(op->base.root->prov,new_request,response,from_uri,&auth_list,op->base.realm)) {
		if (is_within_dialog) {
			sal_op_send_request(op,new_request);
		} else {
			sal_op_resend_request(op,new_request);
		}
		sal_remove_pending_auth(op->base.root,op);
	}else {
		belle_sip_header_from_t *from=belle_sip_message_get_header_by_type(response,belle_sip_header_from_t);
		char *tmp=belle_sip_object_to_string(belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from)));
		ms_message("No auth info found for [%s]",tmp);
		belle_sip_free(tmp);
		sal_add_pending_auth(op->base.root,op);

		if (is_within_dialog) {
			belle_sip_object_unref(new_request);
		}
	}
	/*always store auth info, for case of wrong credential*/
	if (op->auth_info) {
		sal_auth_info_delete(op->auth_info);
		op->auth_info=NULL;
	}
	if (auth_list){
		auth_event=(belle_sip_auth_event_t*)(auth_list->data);
		op->auth_info=sal_auth_info_create(auth_event);
		belle_sip_list_free_with_data(auth_list,(void (*)(void*))belle_sip_auth_event_destroy);
	}
}

bool_t sal_address_is_ipv6(const SalAddress *addr){
	belle_sip_header_address_t* header_addr = BELLE_SIP_HEADER_ADDRESS(addr);
	belle_sip_uri_t* uri = belle_sip_header_address_get_uri(header_addr);
	if (uri){
		const char *host=belle_sip_uri_get_host(uri);
		if (host && strchr(host,':')!=NULL)
			return TRUE;
	}
	return FALSE;
}

static void register_refresher_listener (belle_sip_refresher_t* refresher
		,void* user_pointer
		,unsigned int status_code
		,const char* reason_phrase) {
	SalOp* op = (SalOp*)user_pointer;
	belle_sip_response_t* response=belle_sip_transaction_get_response(BELLE_SIP_TRANSACTION(belle_sip_refresher_get_transaction(refresher)));
	ms_message("Register refresher [%i] reason [%s] for proxy [%s]",status_code,reason_phrase,sal_op_get_proxy(op));

	if (belle_sip_refresher_get_auth_events(refresher)) {
		if (op->auth_info) sal_auth_info_delete(op->auth_info);
		/*only take first one for now*/
		op->auth_info=sal_auth_info_create((belle_sip_auth_event_t*)(belle_sip_refresher_get_auth_events(refresher)->data));
	}
	sal_error_info_set(&op->error_info,SalReasonUnknown,status_code,reason_phrase,NULL);
	if (status_code>=200){
		sal_op_assign_recv_headers(op,(belle_sip_message_t*)response);
	}
	if(status_code == 200) {
		/*check service route rfc3608*/
		belle_sip_header_service_route_t* service_route;
		belle_sip_header_address_t* service_route_address=NULL;
		belle_sip_header_contact_t *contact = belle_sip_refresher_get_contact(refresher);
		if ((service_route=belle_sip_message_get_header_by_type(response,belle_sip_header_service_route_t))) {
			service_route_address=belle_sip_header_address_create(NULL,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(service_route)));
		}
		sal_op_set_service_route(op,(const SalAddress*)service_route_address);
		if (service_route_address) belle_sip_object_unref(service_route_address);

		sal_remove_pending_auth(op->base.root,op); /*just in case*/
		if (contact) {
			sal_op_set_contact_address(op,(SalAddress*)(BELLE_SIP_HEADER_ADDRESS(contact))); /*update contact with real value*/
		}
		op->base.root->callbacks.register_success(op,belle_sip_refresher_get_expires(op->refresher)>0);
	} else if (status_code>=400) {
		/* from rfc3608, 6.1.
				If the UA refreshes the registration, the stored value of the Service-
				   Route is updated according to the Service-Route header field of the
				   latest 200 class response.  If there is no Service-Route header field
				   in the response, the UA clears any service route for that address-
				   of-record previously stored by the UA.  If the re-registration
				   request is refused or if an existing registration expires and the UA
				   chooses not to re-register, the UA SHOULD discard any stored service
				   route for that address-of-record. */
		sal_op_set_service_route(op,NULL);
		sal_op_ref(op); /*take a ref while invoking the callback to make sure the operations done after are valid*/
		op->base.root->callbacks.register_failure(op);
		if (op->state!=SalOpStateTerminated && op->auth_info) {
			/*add pending auth*/
			sal_add_pending_auth(op->base.root,op);
			if (status_code==403 || status_code==401 || status_code==407 )
				op->base.root->callbacks.auth_failure(op,op->auth_info);
		}
		sal_op_unref(op);
	}
}

belle_sip_hop_t * belle_sip_stack_get_next_hop(belle_sip_stack_t *stack, belle_sip_request_t *req) {
	belle_sip_header_route_t *route=BELLE_SIP_HEADER_ROUTE(belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"route"));
	belle_sip_uri_t *uri;

	if (route!=NULL){
		uri=belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(route));
	}else{
		uri=belle_sip_request_get_uri(req);
	}
	return belle_sip_hop_new_from_uri(uri);
}

int sal_call_refer(SalOp *op, const char *refer_to){
	belle_sip_header_address_t *referred_by;
	belle_sip_header_refer_to_t* refer_to_header;
	if (op->dialog) {
		referred_by=(belle_sip_header_address_t*)belle_sip_object_clone(BELLE_SIP_OBJECT(belle_sip_dialog_get_local_party(op->dialog)));
	}else{
		referred_by=BELLE_SIP_HEADER_ADDRESS(sal_op_get_from_address(op));
	}
	refer_to_header=belle_sip_header_refer_to_create(belle_sip_header_address_parse(refer_to));

	return sal_call_refer_to(op,refer_to_header,belle_sip_header_referred_by_create(referred_by));
}

int sal_call_refer_to(SalOp *op, belle_sip_header_refer_to_t* refer_to, belle_sip_header_referred_by_t* referred_by){
	char* tmp;
	belle_sip_request_t* req=op->dialog?belle_sip_dialog_create_request(op->dialog,"REFER"):sal_op_build_request(op, "REFER");
	if (!req) {
		tmp=belle_sip_uri_to_string(belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(refer_to)));
		ms_error("Cannot refer to [%s] for op [%p]",tmp,op);
		belle_sip_free(tmp);
		return -1;
	}
	belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),BELLE_SIP_HEADER(refer_to));
	if (referred_by) belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),BELLE_SIP_HEADER(referred_by));
	return sal_op_send_request(op,req);
}

static void add_headers(SalOp *op, belle_sip_header_t *h, belle_sip_message_t *msg){

	if (BELLE_SIP_OBJECT_IS_INSTANCE_OF(h,belle_sip_header_contact_t)){
		belle_sip_header_contact_t* newct;
		/*special case for contact, we want to keep everything from the custom contact but set automatic mode and add our own parameters as well*/
		sal_op_set_contact_address(op,(SalAddress*)BELLE_SIP_HEADER_ADDRESS(h));
		newct = sal_op_create_contact(op);
		belle_sip_message_set_header(BELLE_SIP_MESSAGE(msg),BELLE_SIP_HEADER(newct));
		return;
	}
	/*if a header already exists in the message, replace it*/
	belle_sip_message_set_header(msg,h);

}