| /* |
| * libjingle |
| * Copyright 2014 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "ARDSignalingMessage.h" |
| |
| #import "ARDUtilities.h" |
| #import "RTCICECandidate+JSON.h" |
| #import "RTCSessionDescription+JSON.h" |
| |
| static NSString const *kARDSignalingMessageTypeKey = @"type"; |
| |
| @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) { |
| NSLog(@"Error parsing signaling message JSON."); |
| return nil; |
| } |
| |
| NSString *typeString = values[kARDSignalingMessageTypeKey]; |
| ARDSignalingMessage *message = nil; |
| if ([typeString isEqualToString:@"candidate"]) { |
| RTCICECandidate *candidate = |
| [RTCICECandidate candidateFromJSONDictionary:values]; |
| message = [[ARDICECandidateMessage alloc] initWithCandidate:candidate]; |
| } else if ([typeString isEqualToString:@"offer"] || |
| [typeString isEqualToString:@"answer"]) { |
| RTCSessionDescription *description = |
| [RTCSessionDescription descriptionFromJSONDictionary:values]; |
| message = |
| [[ARDSessionDescriptionMessage alloc] initWithDescription:description]; |
| } else if ([typeString isEqualToString:@"bye"]) { |
| message = [[ARDByeMessage alloc] init]; |
| } else { |
| NSLog(@"Unexpected type: %@", typeString); |
| } |
| return message; |
| } |
| |
| - (NSData *)JSONData { |
| return nil; |
| } |
| |
| @end |
| |
| @implementation ARDICECandidateMessage |
| |
| @synthesize candidate = _candidate; |
| |
| - (instancetype)initWithCandidate:(RTCICECandidate *)candidate { |
| if (self = [super initWithType:kARDSignalingMessageTypeCandidate]) { |
| _candidate = candidate; |
| } |
| return self; |
| } |
| |
| - (NSData *)JSONData { |
| return [_candidate JSONData]; |
| } |
| |
| @end |
| |
| @implementation ARDSessionDescriptionMessage |
| |
| @synthesize sessionDescription = _sessionDescription; |
| |
| - (instancetype)initWithDescription:(RTCSessionDescription *)description { |
| ARDSignalingMessageType type = kARDSignalingMessageTypeOffer; |
| NSString *typeString = description.type; |
| if ([typeString isEqualToString:@"offer"]) { |
| type = kARDSignalingMessageTypeOffer; |
| } else if ([typeString isEqualToString:@"answer"]) { |
| type = kARDSignalingMessageTypeAnswer; |
| } else { |
| NSAssert(NO, @"Unexpected type: %@", typeString); |
| } |
| if (self = [super initWithType:type]) { |
| _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 |