+static const char *days[]={"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
+static const char *months[]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
+
+static void msg_add_current_date(osip_message_t *msg){
+ char tmp[64]={0};
+ time_t curtime=time(NULL);
+ struct tm *ret;
+#ifndef WIN32
+ struct tm gmt;
+ ret=gmtime_r(&curtime,&gmt);
+#else
+ ret=gmtime(&curtime);
+#endif
+ /*cannot use strftime because it is locale dependant*/
+ snprintf(tmp,sizeof(tmp)-1,"%s, %i %s %i %02i:%02i:%02i GMT",
+ days[ret->tm_wday],ret->tm_mday,months[ret->tm_mon],1900+ret->tm_year,ret->tm_hour,ret->tm_min,ret->tm_sec);
+ osip_message_replace_header(msg,"Date",tmp);
+}
+
+