dns = [[NSUserDefaults standardUserDefaults] stringForKey: @"dnsServer"];
array = [dns componentsSeparatedByString:@","];
NSEnumerator *enumerator = [array objectEnumerator];
NSString *anObject;
unsigned i;
char line[128];
Boolean result;
CFHostRef hostRef;
NSString *hostname = dns;
NSMutableArray *tempDNS = [[NSMutableArray alloc] init];
CFArrayRef addresses = NULL;
hostRef = CFHostCreateWithName(kCFAllocatorDefault, (__bridge CFStringRef)hostname);
if (hostRef) {
result = CFHostStartInfoResolution(hostRef, kCFHostAddresses, NULL);
if (result == TRUE) {
addresses = CFHostGetAddressing(hostRef, &result);
for(int i = 0; i < CFArrayGetCount(addresses); i++){
struct sockaddr_in* remoteAddr;
CFDataRef saData = (CFDataRef)CFArrayGetValueAtIndex(addresses, i);
remoteAddr = (struct sockaddr_in*)CFDataGetBytePtr(saData);
if(remoteAddr != NULL){
// Extract the ip address
//const char *strIP41 = inet_ntoa(remoteAddr->sin_addr);
NSString *strDNS =[NSString stringWithCString:inet_ntoa(remoteAddr->sin_addr) encoding:NSASCIIStringEncoding];
//Our DNS returns 2 name server
NSLog(@"RESOLVED %d:<%@>", i, strDNS);
[tempDNS addObject:strDNS];//here I'm adding IP address to an array.
}
}
}
while (anObject = [enumerator nextObject])
{
NSMutableString *mutableStr = [anObject mutableCopy];
CFStringTrimWhitespace((CFMutableStringRef)mutableStr);
srv = [mutableStr UTF8String];
if (srv && strlen(srv))
{
if (app_config->cfg.nameserver_count==PJ_ARRAY_SIZE(app_config->cfg.nameserver))
{
PJ_LOG(1,(THIS_FILE, "Error: too many DNS servers"));
[mutableStr release];
break;
}
for (i=0; i<app_config->cfg.nameserver_count; ++i) {
pj_ansi_sprintf(line, "--nameserver %.*s\n",(int)app_config->cfg.nameserver[i].slen,app_config->cfg.nameserver[i].ptr);
// pj_strcat2(&cfg, line);
}
pj_strdup2_with_null(app_config->pool, &(app_config->cfg.nameserver[app_config->cfg.nameserver_count++]), srv);
}
[mutableStr release];
}
I'm getting response like below. Any one please guide me, How to work with DNS. Sample code would appreciate.
2016-07-28 10:12:29.899 MYApp[266:39854] granted
2016-07-28 10:12:29.904 MYApp[266:39854] -[Reachability isReachableViaWiFi] (632)
Reachability Flags: -R -------
10:12:31.842 os_core_unix.c !pjlib 2.3 for POSIX initialized
10:12:31.848 sip_endpoint.c .Creating endpoint instance...
10:12:31.851 pjlib .select() I/O Queue created (0x17a75f34)
10:12:31.852 sip_endpoint.c .Module "mod-msg-print" registered
10:12:31.852 sip_transport. .Transport manager created.
10:12:31.852 pjsua_core.c .PJSUA state changed: NULL --> CREATED
2016-07-28 10:12:31.856 MYApp[266:39854] RESOLVED 0:<52.86.229.130>
2016-07-28 10:12:31.856 MYApp[266:39854] RESOLVED 1:<52.73.47.94>
10:12:37.822 sip_endpoint.c .Module "mod-pjsua-log" registered
10:12:37.826 pjsua_core.c .Nameserver vabsys.com added
10:12:37.826 sip_endpoint.c .Module "mod-tsx-layer" registered
10:12:37.826 sip_endpoint.c .Module "mod-stateful-util" registered
10:12:37.826 sip_endpoint.c .Module "mod-ua" registered
10:12:37.826 sip_endpoint.c .Module "mod-100rel" registered
10:12:37.826 sip_endpoint.c .Module "mod-pjsua" registered
10:12:37.827 sip_endpoint.c .Module "mod-invite" registered
10:12:37.871 coreaudio_dev. .. dev_id 0: iPhone IO device (in=1, out=1) 8000Hz
10:12:37.871 coreaudio_dev. ..core audio initialized
10:12:37.871 pjlib ..select() I/O Queue created (0x17a79214)
10:12:37.901 sip_endpoint.c .Module "mod-evsub" registered
10:12:37.901 sip_endpoint.c .Module "mod-presence" registered
10:12:37.901 sip_endpoint.c .Module "mod-mwi" registered
10:12:37.901 sip_endpoint.c .Module "mod-refer" registered
10:12:37.901 sip_endpoint.c .Module "mod-pjsua-pres" registered
10:12:37.901 sip_endpoint.c .Module "mod-pjsua-im" registered
10:12:37.901 sip_endpoint.c .Module "mod-pjsua-options" registered
10:12:37.901 pjsua_core.c .1 SIP worker threads created
10:12:37.901 pjsua_core.c .pjsua version 2.3 for initialized
10:12:37.901 pjsua_core.c .PJSUA state changed: CREATED --> INIT
10:12:37.903 pjsua_core.c SIP UDP socket reachable at 192.168.1.55:5060
10:12:37.903 udp0x17a80200 SIP UDP transport started, published address is 192.168.1.55:5060
10:12:37.904 tcplis:5060 SIP TCP listener ready for incoming connections at 192.168.1.55:5060
10:12:37.904 tcplis:49851 SIP TCP listener ready for incoming connections at fe80::186d:af8f:4693:2b3d:49851
10:12:37.905 pjsua_core.c SIP UDP socket reachable at fe80::186d:af8f:4693:2b3d:50425
10:12:37.905 udpv60x1824be0 SIP UDP IPv6 transport started, published address is [fe80::186d:af8f:4693:2b3d]:50425
10:12:37.905 pjsua_core.c PJSUA state changed: INIT --> STARTING
10:12:37.905 sip_endpoint.c .Module "mod-unsolicited-mwi" registered
10:12:37.905 pjsua_core.c .PJSUA state changed: STARTING --> RUNNING
2016-07-28 10:12:43.307 MYApp[266:39854] There IS internet connection
10:12:43.308 pjsua_acc.c Adding account: id=sip:3my2000@xxxxxxxxxx;transport=tcp;hide
10:12:43.308 pjsua_acc.c .Account sip:3my2000@xxxxxxxxxx;transport=tcp;hide added with id 0
10:12:43.308 pjsua_acc.c .Acc 0: setting registration..
10:12:43.308 pjsua_acc.c ..Warning: cannot use source TCP/TLS socket address for Contact when nameserver is configured.
10:12:43.309 pjsua_acc.c ..Warning: cannot use source TCP/TLS socket address for Contact when nameserver is configured.
10:12:43.309 resolver.c ...Transmitting 38 bytes to NS 0 (52.86.229.130:53): DNS SRV query for _sip._tcp.vabsys.com: Success
10:12:43.309 pjsua_acc.c ..Acc 0: Registration sent
2016-07-28 10:12:43.312 MYApp[266:39854] applicationDidBecomeActive
10:12:45.311 resolver.c !Re-transmitting 38 bytes to NS 0 (52.86.229.130:53): DNS SRV query for _sip._tcp.vabsys.com: Success
10:12:47.311 resolver.c Re-transmitting 38 bytes to NS 0 (52.86.229.130:53): DNS SRV query for _sip._tcp.vabsys.com: Success
10:12:49.311 resolver.c Re-transmitting 38 bytes to NS 0 (52.86.229.130:53): DNS SRV query for _sip._tcp.vabsys.com: Success
10:12:51.313 resolver.c Re-transmitting 38 bytes to NS 0 (52.86.229.130:53): DNS SRV query for _sip._tcp.vabsys.com: Success
10:12:53.313 _sip._tcp.vabs DNS SRV resolution failed for _sip._tcp.vabsys.com: Operation timed out (PJ_ETIMEDOUT)
10:12:53.313 _sip._tcp.vabs DNS SRV resolution failed for _sip._tcp.vabsys.com, trying resolving A record for vabsys.com
10:12:53.314 resolver.c Transmitting 28 bytes to NS 0 (52.86.229.130:53): DNS A query for vabsys.com: Success
10:12:55.314 resolver.c Re-transmitting 28 bytes to NS 0 (52.86.229.130:53): DNS A query for vabsys.com: Success
10:12:57.315 resolver.c Error transmitting request: No working DNS nameserver (PJLIB_UTIL_EDNSNOWORKINGNS)
10:12:57.315 _sip._tcp.vabs DNS A record resolution failed: Operation timed out (PJ_ETIMEDOUT)
10:12:57.315 sip_resolve.c DNS A record resolution failed: Operation timed out (PJ_ETIMEDOUT)
10:12:57.315 tsx0x17a87664 Failed to send Request msg REGISTER/cseq=27562 (tdta0x18252000)! err=70009 (Operation timed out (PJ_ETIMEDOUT))
10:12:57.315 pjsua_acc.c ..SIP registration failed, status=503 (Operation timed out (PJ_ETIMEDOUT))
10:12:57.315 pjsua_acc.c ..Scheduling re-registration retry for acc 0 in 0 seconds..
2016-07-28 10:12:57.316 MYApp[266:39945] Status changed acc 0 Service Unavailable (503)
10:12:57.318 pjsua_acc.c !Deleting account 0..
10:12:57.319 pjsua_acc.c .Account id 0 deleted
10:12:57.319 pjsua_core.c Shutting down, flags=0...
10:12:57.319 pjsua_core.c PJSUA state changed: RUNNING --> CLOSING
10:12:57.325 pjsua_call.c .Hangup all calls..
10:12:57.325 pjsua_media.c .Call 0: deinitializing media..
10:12:57.325 pjsua_media.c .Call 1: deinitializing media..
10:12:57.325 pjsua_media.c .Call 2: deinitializing media..
10:12:57.325 pjsua_media.c .Call 3: deinitializing media..
10:12:57.325 pjsua_pres.c .Shutting down presence..
10:12:58.326 pjsua_core.c .Destroying...
10:12:58.326 pjsua_media.c .Shutting down media..
10:12:58.440 sip_transactio .Stopping transaction layer module
10:12:58.440 sip_transactio .Stopped transaction layer module
10:12:58.440 sip_endpoint.c .Module "mod-unsolicited-mwi" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-pjsua-options" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-pjsua-im" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-pjsua-pres" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-pjsua" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-stateful-util" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-refer" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-mwi" unregistered
10:12:58.440 sip_endpoint.c .Module "mod-presence" unregistered
10:12:58.441 sip_endpoint.c .Module "mod-evsub" unregistered
10:12:58.441 sip_endpoint.c .Module "mod-invite" unregistered
10:12:58.441 sip_endpoint.c .Module "mod-100rel" unregistered
10:12:58.441 sip_endpoint.c .Module "mod-ua" unregistered
10:12:58.441 sip_transactio .Transaction layer module destroyed
10:12:58.441 sip_endpoint.c .Module "mod-tsx-layer" unregistered
10:12:58.441 sip_endpoint.c .Module "mod-msg-print" unregistered
10:12:58.441 sip_endpoint.c .Module "mod-pjsua-log" unregistered
10:12:58.444 tcplis:5060 .SIP TCP listener destroyed
10:12:58.445 tcplis:49851 .SIP TCP listener destroyed
10:12:58.445 sip_endpoint.c .Endpoint 0x17a75864 destroyed
10:12:58.445 pjsua_core.c .PJSUA state changed: CLOSING --> NULL
10:12:58.445 pjsua_core.c .PJSUA destroyed...
_______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip@xxxxxxxxxxxxxxx http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
