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| 1 /* |
| 2 * Copyright 2014 The WebRTC Project Authors. All rights reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #import "ARDCEODTURNClient.h" |
| 12 |
| 13 #import "ARDUtilities.h" |
| 14 #import "RTCIceServer+JSON.h" |
| 15 |
| 16 // TODO(tkchin): move this to a configuration object. |
| 17 static NSString *kTURNOriginURLString = @"https://apprtc.appspot.com"; |
| 18 static NSString *kARDCEODTURNClientErrorDomain = @"ARDCEODTURNClient"; |
| 19 static NSInteger kARDCEODTURNClientErrorBadResponse = -1; |
| 20 |
| 21 @implementation ARDCEODTURNClient { |
| 22 NSURL *_url; |
| 23 } |
| 24 |
| 25 - (instancetype)initWithURL:(NSURL *)url { |
| 26 NSParameterAssert([url absoluteString].length); |
| 27 if (self = [super init]) { |
| 28 _url = url; |
| 29 } |
| 30 return self; |
| 31 } |
| 32 |
| 33 - (void)requestServersWithCompletionHandler: |
| 34 (void (^)(NSArray *turnServers, |
| 35 NSError *error))completionHandler { |
| 36 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:_url]; |
| 37 // We need to set origin because TURN provider whitelists requests based on |
| 38 // origin. |
| 39 [request addValue:@"Mozilla/5.0" forHTTPHeaderField:@"user-agent"]; |
| 40 [request addValue:kTURNOriginURLString forHTTPHeaderField:@"origin"]; |
| 41 [NSURLConnection sendAsyncRequest:request |
| 42 completionHandler:^(NSURLResponse *response, |
| 43 NSData *data, |
| 44 NSError *error) { |
| 45 NSArray *turnServers = [NSArray array]; |
| 46 if (error) { |
| 47 completionHandler(nil, error); |
| 48 return; |
| 49 } |
| 50 NSDictionary *dict = [NSDictionary dictionaryWithJSONData:data]; |
| 51 turnServers = @[ [RTCIceServer serverFromCEODJSONDictionary:dict] ]; |
| 52 if (!turnServers) { |
| 53 NSError *responseError = |
| 54 [[NSError alloc] initWithDomain:kARDCEODTURNClientErrorDomain |
| 55 code:kARDCEODTURNClientErrorBadResponse |
| 56 userInfo:@{ |
| 57 NSLocalizedDescriptionKey: @"Bad TURN response.", |
| 58 }]; |
| 59 completionHandler(turnServers, responseError); |
| 60 return; |
| 61 } |
| 62 completionHandler(turnServers, nil); |
| 63 }]; |
| 64 } |
| 65 |
| 66 @end |
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