RTCDataChannel对WebRTC在iOS中的影响

Question

我正在使用ISBX/代码进行视频聊天实现。该工作在iPhone和仿真器中非常完善。我想在两个对等点之间发送文本/字符串数据，我使用的是RTCDataChannel类。

以下是我的实现，我无法建立联系。它总是给予状态kRTCDataChannelStateConnecting，我如何才能使RTCDataChannel连接？WebRTC RTCDataChannel for iOS是否有可用的工作实现？

- (void)createNewDataChannel {
    if (self.clientDataChannel) {
        switch(self.clientDataChannel.state) {
            case kRTCDataChannelStateConnecting:
                NSLog(@"kRTCDataChannelStateConnecting");
                break;
            case kRTCDataChannelStateOpen:
                NSLog(@"kRTCDataChannelStateOpen");
                break;
            case kRTCDataChannelStateClosing:
                NSLog(@"kRTCDataChannelStateClosing");
                break;
            case kRTCDataChannelStateClosed:
                NSLog(@"kRTCDataChannelStateClosed");
                break;
            default:
                NSLog(@"Unknown");
        }
        return;
    }
    if (self.peerConnection == nil) {
        NSLog(@"Peerconnection is nil");
    }

    RTCDataChannelInit *DataChannelInit = [[RTCDataChannelInit alloc] init];
    DataChannelInit.maxRetransmits = 0;
    DataChannelInit.isOrdered=false;
    DataChannelInit.maxRetransmitTimeMs = -1;
    DataChannelInit.isNegotiated = false;
    DataChannelInit.streamId = 25;
    RTCDataChannel *dataChannel =[_peerConnection createDataChannelWithLabel:@"commands" config:DataChannelInit];
    dataChannel.delegate=self;
    self.clientDataChannel = dataChannel;

    if (self.clientDataChannel == nil) {
        NSLog(@"Datachannel is nil");
    }
    else {
        NSLog(@"Datachannel is working");
    }
}

Answer 1

我能够通过RTCDataChannel发送数据。我所做的是在发出报盘之前。我用下面的配置创建了RTCDataChannelInit。

RTCDataChannelInit *datainit = [[RTCDataChannelInit alloc] init];

datainit.isNegotiated = YES;

datainit.isOrdered = YES;

datainit.maxRetransmits = 30;

datainit.maxRetransmitTimeMs = 30000;

datainit.streamId = 1;
self.dataChannel = [_peerConnection createDataChannelWithLabel:@"commands" config:datainit];
self.dataChannel.delegate=self;

一旦两个设备连接起来，我就在委托函数中检查状态。通道的状态是开放的。

- (void)channelDidChangeState:(RTCDataChannel*)channel
{
    NSLog(@"channel.state %u",channel.state);
}

然后按照以下代码发送数据：

RTCDataBuffer *buffer = [[RTCDataBuffer alloc] initWithData:[str dataUsingEncoding:NSUTF8StringEncoding] isBinary:NO];
BOOL x = [self.dataChannel sendData:buffer];

我使用的配置是在这里给出的：https://groups.google.com/forum/#!searchin/discuss-webrtc/RTCDataChannel/discuss-webrtc/9NObqxnItCg/mRvXBIwkA7wJ