/*accept an incoming call or, during a call accept a reINVITE*/ int sal_call_accept(SalOp*h){ belle_sip_response_t *response; belle_sip_header_contact_t* contact_header; belle_sip_server_transaction_t* transaction; /*first check if an UPDATE transaction need to be accepted*/ if (h->pending_update_server_trans) { transaction=h->pending_update_server_trans; } else if (h->pending_server_trans) { /*so it must be an invite/re-invite*/ transaction=h->pending_server_trans; } else { ms_error("No transaction to accept for op [%p]",h); return -1; } ms_message("Accepting server transaction [%p] on op [%p]", transaction, h); /* sends a 200 OK */ response = sal_op_create_response_from_request(h,belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(transaction)),200); if (response==NULL){ ms_error("Fail to build answer for call"); return -1; } belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),BELLE_SIP_HEADER(create_allow(h->base.root->enable_sip_update))); if (h->base.root->session_expires!=0){ /* if (h->supports_session_timers) {*/ belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),belle_sip_header_create("Supported", "timer")); belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),belle_sip_header_create( "Session-expires", "600;refresher=uac")); /*}*/ } if ((contact_header=sal_op_create_contact(h))) { belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),BELLE_SIP_HEADER(contact_header)); } _sal_op_add_custom_headers(h, BELLE_SIP_MESSAGE(response)); handle_offer_answer_response(h,response); belle_sip_server_transaction_send_response(transaction,response); if (h->pending_update_server_trans) { belle_sip_object_unref(h->pending_update_server_trans); h->pending_update_server_trans=NULL; } return 0; }
static int _sal_op_send_request_with_contact(SalOp* op, belle_sip_request_t* request, bool_t add_contact) { belle_sip_client_transaction_t* client_transaction; belle_sip_provider_t* prov=op->base.root->prov; belle_sip_uri_t* outbound_proxy=NULL; belle_sip_header_contact_t* contact; int result =-1; belle_sip_uri_t *next_hop_uri=NULL; if (add_contact && !belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request),belle_sip_header_contact_t)) { contact = sal_op_create_contact(op); belle_sip_message_set_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_HEADER(contact)); } /*keep existing*/ _sal_op_add_custom_headers(op, (belle_sip_message_t*)request); if (!op->dialog || belle_sip_dialog_get_state(op->dialog) == BELLE_SIP_DIALOG_NULL) { /*don't put route header if dialog is in confirmed state*/ const MSList *elem=sal_op_get_route_addresses(op); const char *transport; const char *method=belle_sip_request_get_method(request); belle_sip_listening_point_t *udplp=belle_sip_provider_get_listening_point(prov,"UDP"); if (elem) { outbound_proxy=belle_sip_header_address_get_uri((belle_sip_header_address_t*)elem->data); next_hop_uri=outbound_proxy; }else{ next_hop_uri=(belle_sip_uri_t*)belle_sip_object_clone((belle_sip_object_t*)belle_sip_request_get_uri(request)); } transport=belle_sip_uri_get_transport_param(next_hop_uri); if (transport==NULL){ /*compatibility mode: by default it should be udp as not explicitely set and if no udp listening point is available, then use * the first available transport*/ if (!belle_sip_uri_is_secure(next_hop_uri)){ if (udplp==NULL){ if (belle_sip_provider_get_listening_point(prov,"TCP")!=NULL){ transport="tcp"; }else if (belle_sip_provider_get_listening_point(prov,"TLS")!=NULL ){ transport="tls"; } } if (transport){ belle_sip_message("Transport is not specified, using %s because UDP is not available.",transport); belle_sip_uri_set_transport_param(next_hop_uri,transport); } } }else{ #ifdef TUNNEL_ENABLED if (udplp && BELLE_SIP_OBJECT_IS_INSTANCE_OF(udplp,belle_sip_tunnel_listening_point_t)){ /* our tunnel mode only supports UDP. Force transport to be set to UDP */ belle_sip_uri_set_transport_param(next_hop_uri,"udp"); } #endif } if ((strcmp(method,"REGISTER")==0 || strcmp(method,"SUBSCRIBE")==0) && transport && (strcasecmp(transport,"TCP")==0 || strcasecmp(transport,"TLS")==0)){ /*RFC 5923: add 'alias' parameter to tell the server that we want it to keep the connection for future requests*/ belle_sip_header_via_t *via=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request),belle_sip_header_via_t); belle_sip_parameters_set_parameter(BELLE_SIP_PARAMETERS(via),"alias",NULL); } } client_transaction = belle_sip_provider_create_client_transaction(prov,request); belle_sip_transaction_set_application_data(BELLE_SIP_TRANSACTION(client_transaction),sal_op_ref(op)); if (op->pending_client_trans) belle_sip_object_unref(op->pending_client_trans); op->pending_client_trans=client_transaction; /*update pending inv for being able to cancel*/ belle_sip_object_ref(op->pending_client_trans); if (belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request),belle_sip_header_user_agent_t)==NULL) belle_sip_message_add_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_HEADER(op->base.root->user_agent)); if (!belle_sip_message_get_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_AUTHORIZATION) && !belle_sip_message_get_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_PROXY_AUTHORIZATION)) { /*hmm just in case we already have authentication param in cache*/ belle_sip_provider_add_authorization(op->base.root->prov,request,NULL,NULL,NULL,op->base.realm); } result = belle_sip_client_transaction_send_request_to(client_transaction,next_hop_uri/*might be null*/); /*update call id if not set yet for this OP*/ if (result == 0 && !op->base.call_id) { op->base.call_id=ms_strdup(belle_sip_header_call_id_get_call_id(BELLE_SIP_HEADER_CALL_ID(belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request), belle_sip_header_call_id_t)))); } return result; }