【正文】 cription.EXOSIP_SUBSCRIPTION_NOANSWER announce no answerEXOSIP_SUBSCRIPTION_PROCEEDING announce a 1xxEXOSIP_SUBSCRIPTION_ANSWERED announce a 200okEXOSIP_SUBSCRIPTION_REDIRECTED announce a redirectionEXOSIP_SUBSCRIPTION_REQUESTFAILURE announce a request failureEXOSIP_SUBSCRIPTION_SERVERFAILURE announce a server failureEXOSIP_SUBSCRIPTION_GLOBALFAILURE announce a global failureEXOSIP_SUBSCRIPTION_NOTIFY announce new NOTIFY requestEXOSIP_SUBSCRIPTION_RELEASED call context is cleared.EXOSIP_IN_SUBSCRIPTION_NEW announce new iningSUBSCRIBE.EXOSIP_IN_SUBSCRIPTION_RELEASED announce end of subscription.EXOSIP_NOTIFICATION_NOANSWER announce no answerEXOSIP_NOTIFICATION_PROCEEDING announce a 1xxEXOSIP_NOTIFICATION_ANSWERED announce a 200okEXOSIP_NOTIFICATION_REDIRECTED announce a redirectionEXOSIP_NOTIFICATION_REQUESTFAILURE announce a request failureEXOSIP_NOTIFICATION_SERVERFAILURE announce a server failureEXOSIP_NOTIFICATION_GLOBALFAILURE announce a global failureEXOSIP_EVENT_COUNT MAX number of events Function Documentationvoid eXosip_event_free( eXosip_event_t * je )Free ressource in an eXosip event.Parameters:je event to work on.eXosip_event_t*eXosip_event_wait(inttv_s,inttv_ms)Wait for an eXosip event.Parameters:tv_s timeout value (seconds).tv_ms timeout value (mseconds).eXosip_event_t* eXosip_event_get( void )Wait for next eXosip event.3 SIP messages and call control API eXosip2 INVITE and Call Management Functionsint eXosip_call_set_reference (int id, void *reference)int eXosip_call_build_initial_invite (osip_message_t **invite, const char *to, const char *from,const char *route, const char *subject)int eXosip_call_send_initial_invite (osip_message_t *invite)int eXosip_call_build_request (int did, const char *method, osip_message_t **request)int eXosip_call_build_ack (int did, osip_message_t **ack)int eXosip_call_send_ack (int did, osip_message_t *ack)int eXosip_call_build_refer (int did, const char *refer_to, osip_message_t **request)int eXosip_call_build_info (int did, osip_message_t **request)int eXosip_call_build_options (int did, osip_message_t **request)int eXosip_call_build_update (int did, osip_message_t **request)int eXosip_call_build_notify (int did, int subscription_status, osip_message_t **request)int eXosip_call_send_request (int did, osip_message_t *request)int eXosip_call_build_answer (int tid, int status, osip_message_t **answer)int eXosip_call_send_answer (int tid, int status, osip_message_t *answer)int eXosip_call_terminate (int cid, int did)int eXosip_call_build_prack (int tid, osip_message_t **prack)int eXosip_call_send_prack (int tid, osip_message_t *prack)int eXosip_transfer_send_notify (int did, int subscription_status, char *body)int eXosip_call_get_referto (int did, char *refer_to, size_t refer_to_len) Function DocumentationinteXosip_call_set_reference(intid,void*reference)Set a new application context for an existing callParameters:id callid or dialogid of callreference New application context.inteXosip_call_build_initial_invite(osip_message_t ** invite,const char*to,const char*from,const char*route,const char*subject)Build a default INVITE message for a new call.Parameters:invite Pointer for the SIP element to hold.to SIP url for callee.from SIP url for caller.route Route header for INVITE. (optionnal)subject Subject for the call.int eXosip_call_send_initial_invite( osip_message_t * invite )Initiate a call.Parameters:invite SIP INVITE message to send.inteXosip_call_build_request(intdid,const char*method,osip_message_t **request)Build a default request within a call. (INVITE, OPTIONS, INFO, REFER)Parameters:did dialog id of call.method request type to build.request The sip request to build.inteXosip_call_build_ack(int did,osip_message_t **ack)Build a default ACK for a 200ok received.Parameters:did dialog id of call.ack The sip request to build.inteXosip_call_send_ack(intdid,osip_message_t *ack)Send the ACK for the 200ok received..Parameters:did dialog id of call.ack SIP ACK message to send.inteXosip_call_build_refer(int did,const char * refer_to,osip_message_t **request)Build a default REFER for a call transfer.Parameters:did dialog id of call.refer_to url for call transfer (ReferTo header).request The sip request to build.inteXosip_call_build_info(intdid,osip_message_t **request)Build a default INFO within a call.Parameters:did dialog id of call.request The sip request to build.inteXosip_call_build_options(int did,osip_message_t **request)Build a default OPTIONS within a call.Parameters:did dialog id of call.request The sip request to build.inteXosip_call_build_update(int did,osip_message_t **request)Build a default UPDATE within a call.Parameters:did dialog id of call.request The sip request to build.inteXosip_call_build_notify(intdid,int subscription_status,osip_message_t **request)Build a default NOTIFY within a call.Parameters:did dialog id of call.subscription_status Subscription status of the request.request The sip request to build.inteXosip_call_send_request(int did,osip_message_t *request)send the request within call. (INVITE, OPTIONS, INFO, REFER, UPDATE)Parameters:did dialog id of call.request The sip request to send.int eXosip_call_build_answer (int tid,int status,osip_message_t **answer)Build default Answer for request.Parameters:tid id of transaction to answer.status Status code to use.answer The sip answer to build.inteXosip_call_send_answer(inttid,int status,osip_message_t *answer)Send Answer for invite.Parameters:tid id of transaction to answer.status response status if