void processSipMsg()
{
int port;
char host[256];
char msg[MESSAGE_MAX_LENGTH];
int msgLen;
osip_event_t *sipevent;
osip_transaction_t *transaction = NULL;
struct sockaddr_in sa;
int status;
if((msgLen = networkMsgRecv(sipSock,msg,MESSAGE_MAX_LENGTH,&sa)) > 0){
printf("processSipMsg: RECEIVED MSG\n");
printf("%s\n",msg);
sipevent = osip_parse(msg,msgLen);
if((sipevent==NULL)||(sipevent->sip==NULL)){
printf("Could not parse SIP message\n");
osip_event_free(sipevent);
return;
}
}
osip_message_fix_last_via_header(sipevent->sip,(char *)inet_ntoa(sa.sin_addr),ntohs(sa.sin_port));
if((status = osip_find_transaction_and_add_event(osip,sipevent)) != 0){
printf("New transaction!\n");
if(MSG_IS_REQUEST(sipevent->sip)){
printf("Got New Request\n");;
}else if(MSG_IS_RESPONSE(sipevent->sip)){
printf("Bad Message:%s\n",msg);
osip_event_free(sipevent);
}else{
printf("Unsupported message:%s\n",msg);
osip_event_free(sipevent);
}
}
}
PPL_DECLARE (int) psp_core_event_add_sip_message (osip_event_t * evt)
{
osip_transaction_t *transaction;
osip_message_t *answer1xx;
int i;
if (MSG_IS_REQUEST (evt->sip))
{
/* delete request where cseq method does not match
the method in request-line */
if (evt->sip->cseq==NULL || evt->sip==NULL
|| evt->sip->cseq->method==NULL || evt->sip->sip_method==NULL)
{
osip_event_free (evt);
return -1;
}
if (0 != strcmp (evt->sip->cseq->method, evt->sip->sip_method))
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_WARNING, NULL,
"core module: Discard invalid message with method!=cseq!\n"));
osip_event_free (evt);
return -1;
}
}
i = psp_core_find_osip_transaction_and_add_event (evt);
if (i == 0)
{
psp_osip_wakeup (core->psp_osip);
return 0; /*evt consumed */
}
if (MSG_IS_REQUEST (evt->sip))
{
if (MSG_IS_ACK (evt->sip))
{ /* continue as it is a new transaction... */
osip_route_t *route;
/* If a route header is present, then plugins will give
the correct location. */
osip_message_get_route (evt->sip, 0, &route);
if (route == NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"core module: This is a late ACK to discard!\n"));
/* It can be a ACK for 200 ok, but those ACK SHOULD
never go through this proxy! (and should be sent to the
contact header of the 200ok */
#ifdef SUPPORT_FOR_BROKEN_UA
/* if this ACK has a request-uri that is not us,
forward the message there. How should I modify this
message?? */
if (evt!=NULL
&& evt->sip!=NULL
&& evt->sip!=NULL
&& evt->sip->req_uri!=NULL)
{
if (psp_core_is_responsible_for_this_domain(evt->sip->req_uri)!=0)
{
int port = 5060;
if (evt->sip->req_uri->port != NULL)
port = osip_atoi (evt->sip->req_uri->port);
psp_core_cb_snd_message(NULL, evt->sip,
evt->sip->req_uri->host,
port, -1);
}
}
#endif
osip_event_free (evt);
return 0;
}
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"core module: This is a ACK for INVITE!\n"));
psp_core_event_add_sfp_inc_ack (evt->sip);
osip_free (evt);
return 0;
}
/* we can create the transaction and send a 1xx */
transaction = osip_create_transaction (core->psp_osip->osip, evt);
if (transaction == NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO3, NULL,
"core module: Could not create a transaction for this request!\n"));
osip_event_free (evt);
return -1;
}
/* now, all retransmissions will be handled by oSIP. */
/* From rfc3261: (Section: 16.2)
"Thus, a stateful proxy SHOULD NOT generate 100 (Trying) responses
to non-INVITE requests." */
if (MSG_IS_INVITE (evt->sip))
{
i = osip_msg_build_response (&answer1xx, 100, evt->sip);
if (i != 0)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"sfp module: could not create a 100 Trying for this transaction. (discard it and let the transaction die itself)!\n"));
osip_event_free (evt);
return -1;
}
osip_transaction_add_event (transaction, evt);
evt = osip_new_outgoing_sipmessage (answer1xx);
evt->transactionid = transaction->transactionid;
osip_transaction_add_event (transaction, evt);
}
else
osip_transaction_add_event (transaction, evt);
psp_osip_wakeup (core->psp_osip);
return 0;
}
else
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO3, NULL,
"sfp module: No module seems to be able to forward this response!\n"));
/* this is probably a late answer? */
/* let's forward it! */
i = psp_core_handle_late_answer (evt->sip);
if (i != 0)
{
osip_event_free (evt);
return -1;
}
osip_event_free (evt);
}
return 0;
}
