1 files changed, 160 insertions, 0 deletions
diff --git a/third_party/libwebrtc/examples/objc/AppRTCMobile/ARDSignalingMessage.m b/third_party/libwebrtc/examples/objc/AppRTCMobile/ARDSignalingMessage.m
new file mode 100644
index 0000000000..049c0f5b0a
--- /dev/null
+++ b/third_party/libwebrtc/examples/objc/AppRTCMobile/ARDSignalingMessage.m
@@ -0,0 +1,160 @@
+/*
+ *  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 "ARDSignalingMessage.h"
+
+#import "sdk/objc/base/RTCLogging.h"
+
+#import "ARDUtilities.h"
+#import "RTCIceCandidate+JSON.h"
+#import "RTCSessionDescription+JSON.h"
+
+static NSString * const kARDSignalingMessageTypeKey = @"type";
+static NSString * const kARDTypeValueRemoveCandidates = @"remove-candidates";
+
+@implementation ARDSignalingMessage
+
+@synthesize type = _type;
+
+- (instancetype)initWithType:(ARDSignalingMessageType)type {
+  if (self = [super init]) {
+    _type = type;
+  }
+  return self;
+}
+
+- (NSString *)description {
+  return [[NSString alloc] initWithData:[self JSONData]
+                               encoding:NSUTF8StringEncoding];
+}
+
++ (ARDSignalingMessage *)messageFromJSONString:(NSString *)jsonString {
+  NSDictionary *values = [NSDictionary dictionaryWithJSONString:jsonString];
+  if (!values) {
+    RTCLogError(@"Error parsing signaling message JSON.");
+    return nil;
+  }
+
+  NSString *typeString = values[kARDSignalingMessageTypeKey];
+  ARDSignalingMessage *message = nil;
+  if ([typeString isEqualToString:@"candidate"]) {
+    RTC_OBJC_TYPE(RTCIceCandidate) *candidate =
+        [RTC_OBJC_TYPE(RTCIceCandidate) candidateFromJSONDictionary:values];
+    message = [[ARDICECandidateMessage alloc] initWithCandidate:candidate];
+  } else if ([typeString isEqualToString:kARDTypeValueRemoveCandidates]) {
+    RTCLogInfo(@"Received remove-candidates message");
+    NSArray<RTC_OBJC_TYPE(RTCIceCandidate) *> *candidates =
+        [RTC_OBJC_TYPE(RTCIceCandidate) candidatesFromJSONDictionary:values];
+    message = [[ARDICECandidateRemovalMessage alloc]
+                  initWithRemovedCandidates:candidates];
+  } else if ([typeString isEqualToString:@"offer"] ||
+             [typeString isEqualToString:@"answer"]) {
+    RTC_OBJC_TYPE(RTCSessionDescription) *description =
+        [RTC_OBJC_TYPE(RTCSessionDescription) descriptionFromJSONDictionary:values];
+    message =
+        [[ARDSessionDescriptionMessage alloc] initWithDescription:description];
+  } else if ([typeString isEqualToString:@"bye"]) {
+    message = [[ARDByeMessage alloc] init];
+  } else {
+    RTCLogError(@"Unexpected type: %@", typeString);
+  }
+  return message;
+}
+
+- (NSData *)JSONData {
+  return nil;
+}
+
+@end
+
+@implementation ARDICECandidateMessage
+
+@synthesize candidate = _candidate;
+
+- (instancetype)initWithCandidate:(RTC_OBJC_TYPE(RTCIceCandidate) *)candidate {
+  if (self = [super initWithType:kARDSignalingMessageTypeCandidate]) {
+    _candidate = candidate;
+  }
+  return self;
+}
+
+- (NSData *)JSONData {
+  return [_candidate JSONData];
+}
+
+@end
+
+@implementation ARDICECandidateRemovalMessage
+
+@synthesize candidates = _candidates;
+
+- (instancetype)initWithRemovedCandidates:(NSArray<RTC_OBJC_TYPE(RTCIceCandidate) *> *)candidates {
+  NSParameterAssert(candidates.count);
+  if (self = [super initWithType:kARDSignalingMessageTypeCandidateRemoval]) {
+    _candidates = candidates;
+  }
+  return self;
+}
+
+- (NSData *)JSONData {
+  return [RTC_OBJC_TYPE(RTCIceCandidate) JSONDataForIceCandidates:_candidates
+                                                         withType:kARDTypeValueRemoveCandidates];
+}
+
+@end
+
+@implementation ARDSessionDescriptionMessage
+
+@synthesize sessionDescription = _sessionDescription;
+
+- (instancetype)initWithDescription:(RTC_OBJC_TYPE(RTCSessionDescription) *)description {
+  ARDSignalingMessageType messageType = kARDSignalingMessageTypeOffer;
+  RTCSdpType sdpType = description.type;
+  switch (sdpType) {
+    case RTCSdpTypeOffer:
+      messageType = kARDSignalingMessageTypeOffer;
+      break;
+    case RTCSdpTypeAnswer:
+      messageType = kARDSignalingMessageTypeAnswer;
+      break;
+    case RTCSdpTypePrAnswer:
+    case RTCSdpTypeRollback:
+      NSAssert(
+          NO, @"Unexpected type: %@", [RTC_OBJC_TYPE(RTCSessionDescription) stringForType:sdpType]);
+      break;
+  }
+  if (self = [super initWithType:messageType]) {
+    _sessionDescription = description;
+  }
+  return self;
+}
+
+- (NSData *)JSONData {
+  return [_sessionDescription JSONData];
+}
+
+@end
+
+@implementation ARDByeMessage
+
+- (instancetype)init {
+  return [super initWithType:kARDSignalingMessageTypeBye];
+}
+
+- (NSData *)JSONData {
+  NSDictionary *message = @{
+    @"type": @"bye"
+  };
+  return [NSJSONSerialization dataWithJSONObject:message
+                                         options:NSJSONWritingPrettyPrinted
+                                           error:NULL];
+}
+
+@end