linphone-iphone/coreapi/bellesip_sal/sal_impl.c
2013-01-24 13:58:06 +01:00

566 lines
22 KiB
C

/*
linphone
Copyright (C) 2012 Belledonne Communications, Grenoble, France
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "sal_impl.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
void _belle_sip_log(belle_sip_log_level lev, const char *fmt, va_list args) {
int ortp_level;
switch(lev) {
case BELLE_SIP_LOG_FATAL:
ortp_level=ORTP_FATAL;
break;
case BELLE_SIP_LOG_ERROR:
ortp_level=ORTP_ERROR;
break;
case BELLE_SIP_LOG_WARNING:
ortp_level=ORTP_WARNING;
break;
case BELLE_SIP_LOG_MESSAGE:
ortp_level=ORTP_MESSAGE;
break;
case BELLE_SIP_LOG_DEBUG:
ortp_level=ORTP_DEBUG;
break;
}
if (ortp_log_level_enabled(ortp_level)){
ortp_logv(ortp_level,fmt,args);
}
}
void sal_enable_logs(){
belle_sip_set_log_level(BELLE_SIP_LOG_MESSAGE);
}
void sal_disable_logs() {
belle_sip_set_log_level(BELLE_SIP_LOG_ERROR);
}
static void sal_add_pending_auth(Sal *sal, SalOp *op){
sal->pending_auths=ms_list_append(sal->pending_auths,op);
}
void sal_remove_pending_auth(Sal *sal, SalOp *op){
sal->pending_auths=ms_list_remove(sal->pending_auths,op);
}
void sal_process_authentication(SalOp *op, belle_sip_response_t *response) {
belle_sip_request_t* request;
bool_t is_within_dialog=FALSE;
belle_sip_list_t* auth_list=NULL;
belle_sip_auth_event_t* auth_event;
if (op->dialog && belle_sip_dialog_get_state(op->dialog)==BELLE_SIP_DIALOG_CONFIRMED) {
request = belle_sip_dialog_create_request_from(op->dialog,(const belle_sip_request_t *)op->request);
is_within_dialog=TRUE;
} else {
request=op->request;
belle_sip_message_remove_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_AUTHORIZATION);
belle_sip_message_remove_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_PROXY_AUTHORIZATION);
}
if (belle_sip_provider_add_authorization(op->base.root->prov,request,response,&auth_list)) {
if (is_within_dialog) {
sal_op_resend_request(op,request);
} else {
sal_op_send_request(op,request);
}
}else {
ms_message("No auth info found for [%s]",sal_op_get_from(op));
if (is_within_dialog) {
belle_sip_object_unref(request);
}
if (op->auth_info) sal_auth_info_delete(op->auth_info);
auth_event=(belle_sip_auth_event_t*)(auth_list->data);
op->auth_info=sal_auth_info_new();
op->auth_info->realm = ms_strdup(belle_sip_auth_event_get_realm(auth_event)) ;
op->auth_info->username = ms_strdup(belle_sip_auth_event_get_username(auth_event)) ;
belle_sip_list_free_with_data(auth_list,(void (*)(void*))belle_sip_auth_event_destroy);
sal_add_pending_auth(op->base.root,op);
}
}
static void process_dialog_terminated(void *sal, const belle_sip_dialog_terminated_event_t *event){
belle_sip_dialog_t* dialog = belle_sip_dialog_terminated_get_dialog(event);
SalOp* op = belle_sip_dialog_get_application_data(dialog);
if (op && op->callbacks.process_dialog_terminated) {
op->callbacks.process_dialog_terminated(op,event);
} else {
ms_error("sal process_dialog_terminated no op found for this dialog [%p], ignoring",dialog);
}
}
static void process_io_error(void *user_ctx, const belle_sip_io_error_event_t *event){
ms_error("process_io_error not implemented yet");
}
static void process_request_event(void *sal, const belle_sip_request_event_t *event) {
SalOp* op=NULL;
belle_sip_request_t* req = belle_sip_request_event_get_request(event);
belle_sip_dialog_t* dialog=belle_sip_request_event_get_dialog(event);
belle_sip_header_address_t* origin_address;
belle_sip_header_address_t* address;
belle_sip_header_from_t* from_header;
belle_sip_header_to_t* to;
belle_sip_header_content_type_t* content_type;
belle_sip_response_t* resp;
belle_sip_header_call_id_t* call_id = belle_sip_message_get_header_by_type(req,belle_sip_header_call_id_t);
belle_sip_header_cseq_t* cseq = belle_sip_message_get_header_by_type(req,belle_sip_header_cseq_t);
SalMessage salmsg;
char message_id[256]={0};
from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t);
char* from;
if (dialog) {
op=(SalOp*)belle_sip_dialog_get_application_data(dialog);
} else if (strcmp("INVITE",belle_sip_request_get_method(req))==0) {
op=sal_op_new((Sal*)sal);
op->dir=SalOpDirIncoming;
sal_op_call_fill_cbs(op);
} else if (strcmp("SUBSCRIBE",belle_sip_request_get_method(req))==0) {
op=sal_op_new((Sal*)sal);
op->dir=SalOpDirIncoming;
sal_op_presence_fill_cbs(op);
} else if (strcmp("MESSAGE",belle_sip_request_get_method(req))==0) {
content_type=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_content_type_t);
if (content_type
&& strcmp("text",belle_sip_header_content_type_get_type(content_type))==0
&& strcmp("plain",belle_sip_header_content_type_get_subtype(content_type))==0) {
address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header))
,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header)));
from=belle_sip_object_to_string(BELLE_SIP_OBJECT(address));
snprintf(message_id,sizeof(message_id)-1,"%s%i"
,belle_sip_header_call_id_get_call_id(call_id)
,belle_sip_header_cseq_get_seq_number(cseq));
salmsg.from=from;
salmsg.text=belle_sip_message_get_body(BELLE_SIP_MESSAGE(req));
salmsg.url=NULL; /*not implemented yet*/
salmsg.message_id=message_id;
((Sal*)sal)->callbacks.text_received((Sal*)sal,&salmsg);
belle_sip_object_unref(address);
belle_sip_free(from);
return;
} else {
ms_error("Unsupported MESSAGE with content type [%s/%s]",belle_sip_header_content_type_get_type(content_type)
,belle_sip_header_content_type_get_subtype(content_type));
return;
}
} else {
ms_error("sal process_request_event not implemented yet for method [%s]",belle_sip_request_get_method(req));
resp=belle_sip_response_create_from_request(req,500);
belle_sip_provider_send_response(((Sal*)sal)->prov,resp);
return;
}
if (!op->base.from_address) {
address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header))
,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header)));
sal_op_set_from_address(op,(SalAddress*)address);
belle_sip_object_unref(address);
}
if (!op->base.to_address) {
to=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_to_t);
address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to))
,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to)));
sal_op_set_to_address(op,(SalAddress*)address);
belle_sip_object_unref(address);
}
if (!op->base.origin) {
/*set origin uri*/
origin_address=belle_sip_header_address_create(NULL,belle_sip_request_extract_origin(req));
__sal_op_set_network_origin_address(op,(SalAddress*)origin_address);
belle_sip_object_unref(origin_address);
}
if (!op->base.remote_ua) {
sal_op_set_remote_ua(op,BELLE_SIP_MESSAGE(req));
}
if (op->callbacks.process_request_event) {
op->callbacks.process_request_event(op,event);
} else {
ms_error("sal process_request_event not implemented yet");
}
}
static void 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);
SalOp* op = (SalOp*)belle_sip_transaction_get_application_data(BELLE_SIP_TRANSACTION(client_transaction));
belle_sip_response_t* response = belle_sip_response_event_get_response(event);
belle_sip_request_t* request=belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(client_transaction));
belle_sip_header_contact_t* original_contact;
belle_sip_header_address_t* contact_address=NULL;
belle_sip_header_via_t* via_header;
belle_sip_uri_t* contact_uri;
unsigned int contact_port;
const char* received;
int rport;
bool_t contact_updated=FALSE;
char* new_contact;
belle_sip_request_t* old_request=NULL;;
belle_sip_response_t* old_response=NULL;;
int response_code = belle_sip_response_get_status_code(response);
if (op->state == SalOpStateTerminated) {
belle_sip_message("Op is terminated, nothing to do with this [%i]",response_code);
return;
}
if (!op->base.remote_ua) {
sal_op_set_remote_ua(op,BELLE_SIP_MESSAGE(response));
}
if (op->callbacks.process_response_event) {
/*Fix contact if needed*/
via_header= (belle_sip_header_via_t*)belle_sip_message_get_header(BELLE_SIP_MESSAGE(response),BELLE_SIP_VIA);
received = belle_sip_header_via_get_received(via_header);
rport = belle_sip_header_via_get_rport(via_header);
if (!sal_op_get_contact(op)) {
/*check if contqct set in reauest*/
if ((original_contact=belle_sip_message_get_header_by_type(request,belle_sip_header_contact_t))) {
/*no contact set yet, try to see if sip tack has an updated one*/
contact_address=belle_sip_header_address_create(NULL,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(original_contact)));
sal_op_set_contact_address(op,(const SalAddress *)contact_address);
belle_sip_object_unref(contact_address);
} else {
/*hmm update contact from via, maybe useless, some op may not need any contact at all*/
contact_address=belle_sip_header_address_new();
contact_uri=belle_sip_uri_create(NULL,belle_sip_header_via_get_host(via_header));
belle_sip_header_address_set_uri(contact_address,contact_uri);
if (strcasecmp(belle_sip_header_via_get_transport(via_header),"UDP")!=0) {
belle_sip_uri_set_transport_param(contact_uri,belle_sip_header_via_get_transport_lowercase(via_header));
}
if (belle_sip_header_via_get_listening_port(via_header)
!= belle_sip_listening_point_get_well_known_port(belle_sip_header_via_get_transport(via_header))) {
belle_sip_uri_set_port(contact_uri,belle_sip_header_via_get_listening_port(via_header) );
}
contact_updated=TRUE;
}
}
if (received!=NULL || rport>0) {
if (sal_op_get_contact(op)){
contact_address = BELLE_SIP_HEADER_ADDRESS(sal_address_clone(sal_op_get_contact_address(op)));
}
contact_uri=belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(contact_address));
if (received && strcmp(received,belle_sip_uri_get_host(contact_uri))!=0) {
/*need to update host*/
belle_sip_uri_set_host(contact_uri,received);
contact_updated=TRUE;
}
contact_port = belle_sip_uri_get_port(contact_uri);
if (rport>0 && rport!=contact_port && (contact_port+rport)!=5060) {
/*need to update port*/
belle_sip_uri_set_port(contact_uri,rport);
contact_updated=TRUE;
}
/*try to fix transport if needed (very unlikely)*/
if (strcasecmp(belle_sip_header_via_get_transport(via_header),"UDP")!=0) {
if (!belle_sip_uri_get_transport_param(contact_uri)
||strcasecmp(belle_sip_uri_get_transport_param(contact_uri),belle_sip_header_via_get_transport(via_header))!=0) {
belle_sip_uri_set_transport_param(contact_uri,belle_sip_header_via_get_transport_lowercase(via_header));
contact_updated=TRUE;
}
} else {
if (belle_sip_uri_get_transport_param(contact_uri)) {
contact_updated=TRUE;
belle_sip_uri_set_transport_param(contact_uri,NULL);
}
}
if (contact_updated) {
new_contact=belle_sip_object_to_string(BELLE_SIP_OBJECT(contact_address));
ms_message("Updating contact from [%s] to [%s] for [%p]",sal_op_get_contact(op),new_contact,op);
sal_op_set_contact(op,new_contact);
belle_sip_free(new_contact);
}
if (contact_address)belle_sip_object_unref(contact_address);
}
/*update request/response
* maybe only the transaction should be kept*/
old_request=op->request;
op->request=belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(client_transaction));
belle_sip_object_ref(op->request);
if (old_request) belle_sip_object_unref(old_request);
old_response=op->response;
op->response=response; /*kept for use at authorization time*/
belle_sip_object_ref(op->response);
if (old_response) belle_sip_object_unref(old_response);
/*handle authozation*/
switch (response_code) {
case 200: {
sal_remove_pending_auth(op->base.root,op);/*just in case*/
break;
}
case 401:
case 407:{
if (op->state == SalOpStateTerminating) {
belle_sip_message("Op is in state terminating, nothing else to do");
return;
} else {
sal_process_authentication(op,response);
return;
}
}
}
op->callbacks.process_response_event(op,event);
} else {
ms_error("Unhandled event response [%p]",event);
}
}
static void process_timeout(void *user_ctx, const belle_sip_timeout_event_t *event) {
/* belle_sip_client_transaction_t* client_transaction = belle_sip_timeout_event_get_client_transaction(event);
SalOp* op = (SalOp*)belle_sip_transaction_get_application_data(BELLE_SIP_TRANSACTION(client_transaction));
if (op->callbacks.process_timeout) {
op->callbacks.process_timeout(op,event);
} else*/ {
ms_error("Unhandled event timeout [%p]",event);
}
}
static void process_transaction_terminated(void *user_ctx, const belle_sip_transaction_terminated_event_t *event) {
/* belle_sip_client_transaction_t* client_transaction = belle_sip_transaction_terminated_event_get_client_transaction(event);
SalOp* op = (SalOp*)belle_sip_transaction_get_application_data(client_transaction);
if (op->calbacks.process_transaction_terminated) {
op->calbacks.process_transaction_terminated(op,event);
} else */{
ms_error("Unhandled transaction terminated [%p]",event);
}
}
static void process_auth_requested(void *sal, belle_sip_auth_event_t *auth_event) {
SalAuthInfo auth_info;
memset(&auth_info,0,sizeof(SalAuthInfo));
auth_info.username=(char*)belle_sip_auth_event_get_username(auth_event);
auth_info.realm=(char*)belle_sip_auth_event_get_realm(auth_event);
((Sal*)sal)->callbacks.auth_requested(sal,&auth_info);
belle_sip_auth_event_set_passwd(auth_event,(const char*)auth_info.password);
belle_sip_auth_event_set_ha1(auth_event,(const char*)auth_info.ha1);
belle_sip_auth_event_set_userid(auth_event,(const char*)auth_info.userid);
return;
}
Sal * sal_init(){
char stack_string[64];
belle_sip_listener_t* listener;
Sal * sal=ms_new0(Sal,1);
snprintf(stack_string,sizeof(stack_string)-1,"(belle-sip/%s)",belle_sip_version_to_string());
sal->user_agent=belle_sip_header_user_agent_new();
belle_sip_header_user_agent_add_product(sal->user_agent, PACKAGE_NAME "/" LINPHONE_VERSION);
belle_sip_header_user_agent_add_product(sal->user_agent,stack_string);
belle_sip_object_ref(sal->user_agent);
belle_sip_set_log_handler(_belle_sip_log);
sal->stack = belle_sip_stack_new(NULL);
sal->prov = belle_sip_stack_create_provider(sal->stack,NULL);
sal->listener_callbacks.process_dialog_terminated=process_dialog_terminated;
sal->listener_callbacks.process_io_error=process_io_error;
sal->listener_callbacks.process_request_event=process_request_event;
sal->listener_callbacks.process_response_event=process_response_event;
sal->listener_callbacks.process_timeout=process_timeout;
sal->listener_callbacks.process_transaction_terminated=process_transaction_terminated;
sal->listener_callbacks.process_auth_requested=process_auth_requested;
belle_sip_provider_add_sip_listener(sal->prov,listener=belle_sip_listener_create_from_callbacks(&sal->listener_callbacks,sal));
/* belle_sip_callbacks_t is unowned, why ?belle_sip_object_unref(listener);*/
return sal;
}
void sal_set_user_pointer(Sal *sal, void *user_data){
sal->up=user_data;
}
void *sal_get_user_pointer(const Sal *sal){
return sal->up;
}
static void unimplemented_stub(){
ms_warning("Unimplemented SAL callback");
}
void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs){
memcpy(&ctx->callbacks,cbs,sizeof(*cbs));
if (ctx->callbacks.call_received==NULL)
ctx->callbacks.call_received=(SalOnCallReceived)unimplemented_stub;
if (ctx->callbacks.call_ringing==NULL)
ctx->callbacks.call_ringing=(SalOnCallRinging)unimplemented_stub;
if (ctx->callbacks.call_accepted==NULL)
ctx->callbacks.call_accepted=(SalOnCallAccepted)unimplemented_stub;
if (ctx->callbacks.call_failure==NULL)
ctx->callbacks.call_failure=(SalOnCallFailure)unimplemented_stub;
if (ctx->callbacks.call_terminated==NULL)
ctx->callbacks.call_terminated=(SalOnCallTerminated)unimplemented_stub;
if (ctx->callbacks.call_released==NULL)
ctx->callbacks.call_released=(SalOnCallReleased)unimplemented_stub;
if (ctx->callbacks.call_updating==NULL)
ctx->callbacks.call_updating=(SalOnCallUpdating)unimplemented_stub;
if (ctx->callbacks.auth_requested_legacy==NULL)
ctx->callbacks.auth_requested_legacy=(SalOnAuthRequestedLegacy)unimplemented_stub;
if (ctx->callbacks.auth_success==NULL)
ctx->callbacks.auth_success=(SalOnAuthSuccess)unimplemented_stub;
if (ctx->callbacks.register_success==NULL)
ctx->callbacks.register_success=(SalOnRegisterSuccess)unimplemented_stub;
if (ctx->callbacks.register_failure==NULL)
ctx->callbacks.register_failure=(SalOnRegisterFailure)unimplemented_stub;
if (ctx->callbacks.dtmf_received==NULL)
ctx->callbacks.dtmf_received=(SalOnDtmfReceived)unimplemented_stub;
if (ctx->callbacks.notify==NULL)
ctx->callbacks.notify=(SalOnNotify)unimplemented_stub;
if (ctx->callbacks.notify_presence==NULL)
ctx->callbacks.notify_presence=(SalOnNotifyPresence)unimplemented_stub;
if (ctx->callbacks.subscribe_received==NULL)
ctx->callbacks.subscribe_received=(SalOnSubscribeReceived)unimplemented_stub;
if (ctx->callbacks.text_received==NULL)
ctx->callbacks.text_received=(SalOnTextReceived)unimplemented_stub;
if (ctx->callbacks.ping_reply==NULL)
ctx->callbacks.ping_reply=(SalOnPingReply)unimplemented_stub;
if (ctx->callbacks.auth_requested==NULL)
ctx->callbacks.auth_requested=(SalOnAuthRequested)unimplemented_stub;
}
void sal_uninit(Sal* sal){
belle_sip_object_unref(sal->user_agent);
belle_sip_object_unref(sal->prov);
belle_sip_object_unref(sal->stack);
ms_free(sal);
return ;
};
int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure){
int result;
belle_sip_listening_point_t* lp = belle_sip_stack_create_listening_point(ctx->stack,addr,port,sal_transport_to_string(tr));
if (lp) {
result = belle_sip_provider_add_listening_point(ctx->prov,lp);
} else {
return -1;
}
return result;
}
static void remove_listening_point(belle_sip_listening_point_t* lp,belle_sip_provider_t* prov) {
belle_sip_provider_remove_listening_point(prov,lp);
}
int sal_unlisten_ports(Sal *ctx){
const belle_sip_list_t * lps = belle_sip_provider_get_listening_points(ctx->prov);
belle_sip_list_t * tmp_list = belle_sip_list_copy(lps);
belle_sip_list_for_each2 (tmp_list,(void (*)(void*,void*))remove_listening_point,ctx->prov);
belle_sip_list_free(tmp_list);
ms_message("sal_unlisten_ports done");
return 0;
}
ortp_socket_t sal_get_socket(Sal *ctx){
ms_fatal("sal_get_socket not implemented yet");
return -1;
}
void sal_set_user_agent(Sal *ctx, const char *user_agent){
belle_sip_header_user_agent_set_products(ctx->user_agent,NULL);
belle_sip_header_user_agent_add_product(ctx->user_agent,user_agent);
return ;
}
/*keepalive period in ms*/
void sal_set_keepalive_period(Sal *ctx,unsigned int value){
ms_error("sal_set_keepalive_period not implemented yet");
return ;
}
/**
* returns keepalive period in ms
* 0 desactiaved
* */
unsigned int sal_get_keepalive_period(Sal *ctx){
ms_fatal("sal_get_keepalive_period not implemented yet");
return -1;
}
void sal_use_session_timers(Sal *ctx, int expires){
ctx->session_expires=expires;
return ;
}
void sal_use_double_registrations(Sal *ctx, bool_t enabled){
ms_error("sal_use_double_registrations not implemented yet");
return ;
}
void sal_reuse_authorization(Sal *ctx, bool_t enabled){
ms_error("sal_reuse_authorization not implemented yet");
return ;
}
void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec){
ctx->one_matching_codec=one_matching_codec;
}
void sal_use_rport(Sal *ctx, bool_t use_rports){
ms_error("sal_use_rport not implemented yet");
return ;
}
void sal_use_101(Sal *ctx, bool_t use_101){
ms_error("sal_use_101 not implemented yet");
return ;
}
void sal_set_root_ca(Sal* ctx, const char* rootCa){
ms_error("sal_set_root_ca not implemented yet");
return ;
}
void sal_verify_server_certificates(Sal *ctx, bool_t verify){
ms_error("sal_verify_server_certificates not implemented yet");
return ;
}
void sal_verify_server_cn(Sal *ctx, bool_t verify){
ms_error("sal_verify_server_cn not implemented yet");
return ;
}
void sal_use_tcp_tls_keepalive(Sal *ctx, bool_t enabled) {
ms_error("sal_use_tcp_tls_keepalive not implemented yet");
return ;
}
int sal_iterate(Sal *sal){
/*FIXME should be zero*/
belle_sip_stack_sleep(sal->stack,0);
return 0;
}
MSList * sal_get_pending_auths(Sal *sal){
return ms_list_copy(sal->pending_auths);
}
#define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
#define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
/*misc*/
void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen){
ms_fatal("sal_get_default_local_ip not implemented yet");
return ;
}
const char *sal_get_root_ca(Sal* ctx) {
ms_fatal("sal_get_root_ca not implemented yet");
return NULL;
}
int sal_reset_transports(Sal *ctx){
ms_warning("sal_reset_transports() not implemented in this version.");
return -1;
}
void sal_set_dscp(Sal *ctx, int dscp){
ms_warning("sal_set_dscp not implemented");
}
void sal_set_send_error(Sal *sal,int value) {
belle_sip_stack_set_send_error(sal->stack,value);
}