Update ice server provider response format in iOS AppRTCMobile

webrtc/examples/objc/AppRTCMobile/ARDAppClient.m

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import "ARDAppClient+Internal.h"
 
 #import "WebRTC/RTCAVFoundationVideoSource.h"
 #import "WebRTC/RTCAudioTrack.h"
 #import "WebRTC/RTCConfiguration.h"
 #import "WebRTC/RTCFileLogger.h"
 #import "WebRTC/RTCIceServer.h"
 #import "WebRTC/RTCLogging.h"
 #import "WebRTC/RTCMediaConstraints.h"
 #import "WebRTC/RTCMediaStream.h"
 #import "WebRTC/RTCPeerConnectionFactory.h"
 #import "WebRTC/RTCRtpSender.h"
 #import "WebRTC/RTCTracing.h"
 
 #import "ARDAppEngineClient.h"
-#import "ARDCEODTURNClient.h"
+#import "ARDTURNClient+Internal.h"
 #import "ARDJoinResponse.h"
 #import "ARDMessageResponse.h"
 #import "ARDSDPUtils.h"
 #import "ARDSignalingMessage.h"
 #import "ARDUtilities.h"
 #import "ARDWebSocketChannel.h"
 #import "RTCIceCandidate+JSON.h"
 #import "RTCSessionDescription+JSON.h"
 
-static NSString * const kARDDefaultSTUNServerUrl =
-    @"stun:stun.l.google.com:19302";
-// TODO(tkchin): figure out a better username for CEOD statistics.
-static NSString * const kARDTurnRequestUrl =
-    @"https://computeengineondemand.appspot.com"
-    @"/turn?username=iapprtc&key=4080218913";
+static NSString * const kARDIceServerRequestUrl = @"https://appr.tc/params";
 
 static NSString * const kARDAppClientErrorDomain = @"ARDAppClient";
 static NSInteger const kARDAppClientErrorUnknown = -1;
 static NSInteger const kARDAppClientErrorRoomFull = -2;
 static NSInteger const kARDAppClientErrorCreateSDP = -3;
 static NSInteger const kARDAppClientErrorSetSDP = -4;
 static NSInteger const kARDAppClientErrorInvalidClient = -5;
 static NSInteger const kARDAppClientErrorInvalidRoom = -6;
 static NSString * const kARDMediaStreamId = @"ARDAMS";
 static NSString * const kARDAudioTrackId = @"ARDAMSa0";
@@ skipping 74 matching lines @@
 @synthesize webSocketURL = _websocketURL;
 @synthesize webSocketRestURL = _websocketRestURL;
 @synthesize defaultPeerConnectionConstraints =
     _defaultPeerConnectionConstraints;
 @synthesize isLoopback = _isLoopback;
 @synthesize isAudioOnly = _isAudioOnly;
 @synthesize shouldMakeAecDump = _shouldMakeAecDump;
 @synthesize shouldUseLevelControl = _shouldUseLevelControl;
 
 - (instancetype)init {
-  if (self = [super init]) {
-    _roomServerClient = [[ARDAppEngineClient alloc] init];
-    NSURL *turnRequestURL = [NSURL URLWithString:kARDTurnRequestUrl];
-    _turnClient = [[ARDCEODTURNClient alloc] initWithURL:turnRequestURL];
-    [self configure];
-  }
-  return self;
+  return [self initWithDelegate:nil];
 }
 
 - (instancetype)initWithDelegate:(id<ARDAppClientDelegate>)delegate {
   if (self = [super init]) {
     _roomServerClient = [[ARDAppEngineClient alloc] init];
     _delegate = delegate;
-    NSURL *turnRequestURL = [NSURL URLWithString:kARDTurnRequestUrl];
-    _turnClient = [[ARDCEODTURNClient alloc] initWithURL:turnRequestURL];
+    NSURL *turnRequestURL = [NSURL URLWithString:kARDIceServerRequestUrl];
+    _turnClient = [[ARDTURNClient alloc] initWithURL:turnRequestURL];
     [self configure];
   }
   return self;
 }
 
 // TODO(tkchin): Provide signaling channel factory interface so we can recreate
 // channel if we need to on network failure. Also, make this the default public
 // constructor.
 - (instancetype)initWithRoomServerClient:(id<ARDRoomServerClient>)rsClient
                         signalingChannel:(id<ARDSignalingChannel>)channel
                               turnClient:(id<ARDTURNClient>)turnClient
                                 delegate:(id<ARDAppClientDelegate>)delegate {
   NSParameterAssert(rsClient);
   NSParameterAssert(channel);
   NSParameterAssert(turnClient);
   if (self = [super init]) {
     _roomServerClient = rsClient;
     _channel = channel;
     _turnClient = turnClient;
     _delegate = delegate;
     [self configure];
   }
   return self;
 }
 
 - (void)configure {
   _factory = [[RTCPeerConnectionFactory alloc] init];
   _messageQueue = [NSMutableArray array];
-  _iceServers = [NSMutableArray arrayWithObject:[self defaultSTUNServer]];
+  _iceServers = [NSMutableArray array];
   _fileLogger = [[RTCFileLogger alloc] init];
   [_fileLogger start];
 }
 
 - (void)dealloc {
   self.shouldGetStats = NO;
   [self disconnect];
 }
 
 - (void)setShouldGetStats:(BOOL)shouldGetStats {
@@ skipping 617 matching lines @@
   }
   NSString *value = _isLoopback ? @"false" : @"true";
   NSDictionary *optionalConstraints = @{ @"DtlsSrtpKeyAgreement" : value };
   RTCMediaConstraints* constraints =
       [[RTCMediaConstraints alloc]
           initWithMandatoryConstraints:nil
                    optionalConstraints:optionalConstraints];
   return constraints;
 }
 
-- (RTCIceServer *)defaultSTUNServer {
-  return [[RTCIceServer alloc] initWithURLStrings:@[kARDDefaultSTUNServerUrl]
-                                         username:@""
-                                       credential:@""];
-}
-
 #pragma mark - Errors
 
 + (NSError *)errorForJoinResultType:(ARDJoinResultType)resultType {
   NSError *error = nil;
   switch (resultType) {
     case kARDJoinResultTypeSuccess:
       break;
     case kARDJoinResultTypeUnknown: {
       error = [[NSError alloc] initWithDomain:kARDAppClientErrorDomain
                                          code:kARDAppClientErrorUnknown
@@ skipping 38 matching lines @@
                                          code:kARDAppClientErrorInvalidRoom
                                      userInfo:@{
         NSLocalizedDescriptionKey: @"Invalid room.",
       }];
       break;
   }
   return error;
 }
 
 @end