Since iOS SDK build 2.6.48 it is possible to check if a stream with a given name is available on a server for playback, like WebSDK function Stream.available().

To do this:

1. Create a separate Stream object with the stream name to check availability

Objective C code

    FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
    FPWCSApi2StreamOptions *options = [[FPWCSApi2StreamOptions alloc] init];
    options.name = _remoteStreamName.text;
    options.display = _remoteDisplay;
    FPWCSApi2Stream *stream = [session createStream:options error:nil];

Swift code

        let options = FPWCSApi2StreamOptions()
        options.name = playName.text;
        options.display = remoteDisplay.videoView;
        do {
            playStream = try session!.createStream(options)
            ...
        } catch {
            print(error)
        }

2. Call available() method with callback function to get availability status and reason if stream is not available

Objective C code

    [stream available:^(BOOL available, NSString *info) {
        [self changeViewState:button enabled:YES];
        if (available) {
            _remoteStreamStatus.text = @"AVAILABLE";
            _remoteStreamStatus.textColor = [UIColor greenColor];
        } else {
            _remoteStreamStatus.text = info;
            _remoteStreamStatus.textColor = [UIColor redColor];

        }
    }];

Swift code

        ...
        do {
            playStream = try session!.createStream(options)
            playStream?.available({ (available, info) in
                self.changeViewState(self.availableButton, true)
                if (available) {
                    self.playStatus.text = "AVAILABLE"
                    self.playStatus.textColor = .green
                } else {
                    self.playStatus.text = info
                    self.playStatus.textColor = .red
                }
            })
        } catch {
            print(error)
        }