问转换为同步样式API所需的回调地狱。

EN

kurento(args.ws_uri, function(error, client) {
  if ( error ) return onError(error);

  client.create('MediaPipeline', function(error, pipeline) {
    if ( error ) return onError(error);

    console.log("Got MediaPipeline");

    pipeline.create('RecorderEndpoint', { uri : file_uri }, function(error, recorder) {
      if ( error ) return onError(error);

      console.log("Got RecorderEndpoint");

      pipeline.create('WebRtcEndpoint', function(error, webRtc) {
        if ( error ) return onError(error);

        console.log("Got WebRtcEndpoint");

        webRtc.connect(recorder, function(error) {
          if ( error ) return onError(error);

          console.log("Connected");

          recorder.record(function(error) {
            if ( error ) return onError(error);

            console.log("record");

            webRtc.connect(webRtc, function(error) {
              if ( error ) return onError(error);

              console.log("Second connect");
            });

            webRtc.processOffer(offer, function(error, answer) {
              if ( error ) return onError(error);

              console.log("offer");

              return answer;
            });
          });
        });
      });
    });
  });
});

client = Meteor.wrapAsync(kurento,ws_uri);
//client = Meteor.wrapAsync(getKurentoClient);
console.log("got connected to server");

pipeline = Meteor.wrapAsync(client.create,'MediaPipeline');
console.log("Got MediaPipeline");

var webRtc = Meteor.wrapAsync(pipeline.create,'WebRtcEndpoint');
console.log("Got WebRtcEndpoint");

var recorder = Meteor.wrapAsync(pipeline.create,('RecorderEndpoint', {uri: file_uri}));
console.log("Got RecorderEndpoint");

Meteor.wrapAsync(webRtc.connect,recorder);
console.log("Connected recorder");

Meteor.wrapAsync(webRtc.connect,webRtc);
console.log("Connected webRtc");

Meteor.wrapAsync(recorder.record);
console.log("started recording");

var sdpAnswer = Meteor.wrapAsync(webRtc.processOffer,offer);
console.log("sdpAnswer"+sdpAnswer());
return sdpAnswer;