请问janus.js echotest怎么把local和remote分开

Question

echo test

文档强调了：这个Echo测试演示只是盲目地发送给你回任何你发送给它。你基本上是附着在自己身上，所以你发送到网关的音频和视频就会回传给你。

        onlocalstream: function(stream) {
                                    Janus.debug(" ::: Got a local stream :::");
                                    Janus.debug(JSON.stringify(stream));
                                    if($('#myvideo').length === 0) {
                                        $('#videos').removeClass('hide').show();
                                        $('#videoleft').append('<video class="rounded centered" id="myvideo" width=320 height=240 autoplay muted="muted"/>');
                                    }
                                    Janus.attachMediaStream($('#myvideo').get(0), stream);
                                    $("#myvideo").get(0).muted = "muted";
                                    $("#videoleft").parent().block({
                                        message: '<b>Publishing...</b>',
                                        css: {
                                            border: 'none',
                                            backgroundColor: 'transparent',
                                            color: 'white'
                                        }
                                    });
                                    // No remote video yet
                                    $('#videoright').append('<video class="rounded centered" id="waitingvideo" width=320 height=240 />');
                                    if(spinner == null) {
                                        var target = document.getElementById('videoright');
                                        spinner = new Spinner({top:100}).spin(target);
                                    } else {
                                        spinner.spin();
                                    }
                                    var videoTracks = stream.getVideoTracks();
                                    if(videoTracks === null || videoTracks === undefined || videoTracks.length === 0) {
                                        // No webcam
                                        $('#myvideo').hide();
                                        $('#videoleft').append(
                                            '<div class="no-video-container">' +
                                                '<i class="fa fa-video-camera fa-5 no-video-icon"></i>' +
                                                '<span class="no-video-text">No webcam available</span>' +
                                            '</div>');
                                    }
                                },
                                onremotestream: function(stream) {
                                    Janus.debug(" ::: Got a remote stream :::");
                                    Janus.debug(JSON.stringify(stream));
                                    if($('#peervideo').length === 0) {
                                        $('#videos').removeClass('hide').show();
                                        $('#videoright').append('<video class="rounded centered hide" id="peervideo" width=320 height=240 autoplay/>');
                                        // Show the video, hide the spinner and show the resolution when we get a playing event
                                        $("#peervideo").bind("playing", function () {
                                            $('#waitingvideo').remove();
                                            $('#peervideo').removeClass('hide');
                                            if(spinner !== null && spinner !== undefined)
                                                spinner.stop();
                                            spinner = null;
                                            var width = this.videoWidth;
                                            var height = this.videoHeight;
                                            $('#curres').removeClass('hide').text(width+'x'+height).show();
                                            if(adapter.browserDetails.browser === "firefox") {
                                                // Firefox Stable has a bug: width and height are not immediately available after a playing
                                                setTimeout(function() {
                                                    var width = $("#peervideo").get(0).videoWidth;
                                                    var height = $("#peervideo").get(0).videoHeight;
                                                    $('#curres').removeClass('hide').text(width+'x'+height).show();
                                                }, 2000);
                                            }
                                        });
                                    }
                                    Janus.attachMediaStream($('#peervideo').get(0), stream);
                                    var videoTracks = stream.getVideoTracks();
                                    if(videoTracks === null || videoTracks === undefined || videoTracks.length === 0 || videoTracks[0].muted) {
                                        // No remote video
                                        $('#peervideo').hide();
                                        $('#videoright').append(
                                            '<div class="no-video-container">' +
                                                '<i class="fa fa-video-camera fa-5 no-video-icon"></i>' +
                                                '<span class="no-video-text">No remote video available</span>' +
                                            '</div>');
                                    }
                                    // Enable audio/video buttons and bitrate limiter
                                    audioenabled = true;
                                    videoenabled = true;
                                    $('#toggleaudio').click(
                                        function() {
                                            audioenabled = !audioenabled;
                                            if(audioenabled)
                                                $('#toggleaudio').html("Disable audio").removeClass("btn-success").addClass("btn-danger");
                                            else
                                                $('#toggleaudio').html("Enable audio").removeClass("btn-danger").addClass("btn-success");
                                            echotest.send({"message": { "audio": audioenabled }});
                                        });
                                    $('#togglevideo').click(
                                        function() {
                                            videoenabled = !videoenabled;
                                            if(videoenabled)
                                                $('#togglevideo').html("Disable video").removeClass("btn-success").addClass("btn-danger");
                                            else
                                                $('#togglevideo').html("Enable video").removeClass("btn-danger").addClass("btn-success");
                                            echotest.send({"message": { "video": videoenabled }});
                                        });
                                    $('#toggleaudio').parent().removeClass('hide').show();
                                    $('#bitrate a').click(function() {
                                        var id = $(this).attr("id");
                                        var bitrate = parseInt(id)*1000;
                                        if(bitrate === 0) {
                                            Janus.log("Not limiting bandwidth via REMB");
                                        } else {
                                            Janus.log("Capping bandwidth to " + bitrate + " via REMB");
                                        }
                                        $('#bitrateset').html($(this).html()).parent().removeClass('open');
                                        echotest.send({"message": { "bitrate": bitrate }});
                                        return false;
                                    });
                                    if(adapter.browserDetails.browser === "chrome" || adapter.browserDetails.browser === "firefox") {
                                        $('#curbitrate').removeClass('hide').show();
                                        bitrateTimer = setInterval(function() {
                                            // Display updated bitrate, if supported
                                            var bitrate = echotest.getBitrate();
                                            //~ Janus.debug("Current bitrate is " + echotest.getBitrate());
                                            $('#curbitrate').text(bitrate);
                                        }, 1000);
                                    }
                                },

找到了监听方法看源码没看懂是怎么调用的。想知道如果网关有这么一个转播服务，怎么将local和remote分开，提供服务的只现实local；接收服务怎么接收现实remote？这个一对多怎么实现？

Answer 1

不知道你解决了吗?!文档中有解决方案:
在createOffer或createAnswer时候media字段发送方设置

// 已createOffer举例
janus.createOffer({
  media: {
    videoSend: true,
    videoRecv: false
  }
})

接收方

janus.createOffer({
  media: {
    videoSend: false,
    videoRecv: true
  }
})