Question

我正在开发一个聊天应用程序并完成它。现在我也想实现视频聊天。经过大量研究后，我决定选择“WebRTC”库。

我做了什么？

1）能够在本地服务器上运行AppRtcDemo，并且它在浏览器之间正常工作。

参考：http://www.webrtc.org/reference/getting-started

2）能够构建Android AppRtcDemo.But当我运行它时说“Cross origin not support”。

经过研究，我在webrtc讨论中发现要解决此问题，我需要设置自己的转弯服务器。

3）所以我安装了webrtc推荐的最新rfc5766TurnServer。我成功运行了转向服务器。

参考：http://code.google.com/p/rfc5766-turn-server/

我对ApprtcDemo（网络）和（Android）进行了以下更改，以便与我的Turn服务器一起使用

1）apprtc.py

替换：

turn_url = 'https://computeengineondemand.appspot.com/'
turn_url = turn_url + 'turn?' + 'username=' + user + '&key=4080218913'

指向我的转弯服务器：

turn_url = 'http://192.168.5.85:3478/?service=turn&username=biraj'

2）index.html

替换：

var pcConfig = {{ pc_config|safe }};

使用：

var pcConfig = {"iceServers": [{"url": "stun:stun.l.google.com:19302"},            {"url":"turn:biraj@192.168.5.85:3479", "credential":"0x5b04123c3eec4cf0be64ab909bb2ff5b"}]};

的Android

1）AppRTCDemoActivity.java

替换：

roomInput.setText("https://apprtc.appspot.com/?r=");

使用我的本地apprtc服务器：

roomInput.setText("http://192.168.5.86:8080/?r=");

2）AppRTCClient.java

在private PeerConnection.IceServer requestTurnServer(String url){}函数

中

替换：

connection.addRequestProperty("origin", "https://apprtc.appspot.com");

使用：

connection.addRequestProperty("origin", "http://192.168.5.86:8080");

3）/assets/channel.html

替换：

<script src="https://apprtc.appspot.com/_ah/channel/jsapi"></script>

使用：

<script src="http://192.168.5.86:8080/_ah/channel/jsapi"></script>

现在我的问题是为什么这是在浏览器之间工作，而不是在Android AppRtcDemo和浏览器之间。

当我在上面进行更改后在Android上运行AppRtcDemo时，在右上角开始本地摄像头预览并且消息提示“等待ICEcandidates”然后没有任何反应。

提前致谢。

感谢All支持我的问题。经过与ApprtcDemo的长途跋涉，我获得了成功，它运作良好。我正在发布解决方案。

找到“ GAEChannelClient.java ”java文件。

并按以下方式进行更改。

/*
 * libjingle
 * Copyright 2013, 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.
 */

package org.appspot.apprtc;

import java.io.InputStream;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.util.Log;
import android.webkit.ConsoleMessage;
import android.webkit.JavascriptInterface;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;

/**
 * Java-land version of Google AppEngine's JavaScript Channel API:
 * https://developers.google.com/appengine/docs/python/channel/javascript
 * 
 * Requires a hosted HTML page that opens the desired channel and dispatches JS
 * on{Open,Message,Close,Error}() events to a global object named
 * "androidMessageHandler".
 */
public class GAEChannelClient {
    private static final String TAG = "GAEChannelClient";
    private WebView webView;
    private final ProxyingMessageHandler proxyingMessageHandler;

    /**
     * Callback interface for messages delivered on the Google AppEngine
     * channel.
     * 
     * Methods are guaranteed to be invoked on the UI thread of |activity|
     * passed to GAEChannelClient's constructor.
     */
    public interface MessageHandler {
        public void onOpen();

        public void onMessage(String data);

        public void onClose();

        public void onError(int code, String description);
    }

    /** Asynchronously open an AppEngine channel. */
    @SuppressLint("SetJavaScriptEnabled")
    public GAEChannelClient(Activity activity, String token, MessageHandler handler) {
        webView = new WebView(activity);

        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setAllowFileAccessFromFileURLs(true); // Maybe you
                                                                    // don't
                                                                    // need this
                                                                    // rule
        webView.getSettings().setAllowUniversalAccessFromFileURLs(true);

        webView.setWebChromeClient(new WebChromeClient() { // Purely for
                                                            // debugging.
            public boolean onConsoleMessage(ConsoleMessage msg) {
                Log.d(TAG, "console: " + msg.message() + " at " + msg.sourceId() + ":" + msg.lineNumber());
                return false;
            }
        });
        webView.setWebViewClient(new WebViewClient() { // Purely for debugging.
            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                Log.e(TAG, "JS error: " + errorCode + " in " + failingUrl + ", desc: " + description);
            }

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                System.out.println("HI");
                return super.shouldOverrideUrlLoading(view, url);
            }
        });

        proxyingMessageHandler = new ProxyingMessageHandler(activity, handler, token);
        webView.addJavascriptInterface(proxyingMessageHandler, "androidMessageHandler");
//       webView.loadUrl("file:///android_asset/channel.html");
        try {
            InputStream is = activity.getAssets().open("channel.html");
            StringBuilder builder = new StringBuilder();
            byte[] buffer = new byte[1024];
            while (is.read(buffer) != -1) {
                builder.append(new String(buffer));
            }
            is.close();
            String str = builder.toString();
            webView.loadDataWithBaseURL("http://192.168.5.86:8080", str, "text/html", "utf-8", null);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    /** Close the connection to the AppEngine channel. */
    public void close() {
        if (webView == null) {
            return;
        }
        proxyingMessageHandler.disconnect();
        webView.removeJavascriptInterface("androidMessageHandler");
        webView.loadUrl("about:blank");
        webView = null;
    }

    // Helper class for proxying callbacks from the Java<->JS interaction
    // (private, background) thread to the Activity's UI thread.
    private static class ProxyingMessageHandler {
        private final Activity activity;
        private final MessageHandler handler;
        private final boolean[] disconnected = { false };
        private final String token;

        public ProxyingMessageHandler(Activity activity, MessageHandler handler, String token) {
            this.activity = activity;
            this.handler = handler;
            this.token = token;
        }

        public void disconnect() {
            disconnected[0] = true;
        }

        private boolean disconnected() {
            return disconnected[0];
        }

        @JavascriptInterface
        public String getToken() {
            return token;
        }

        @JavascriptInterface
        public void onOpen() {

            System.out.println("GAEClient : Open" );
            activity.runOnUiThread(new Runnable() {
                public void run() {
                    if (!disconnected()) {
                        handler.onOpen();
                    }
                }
            });
        }

        @JavascriptInterface
        public void onMessage(final String data) {
            System.out.println("GAEClient : Message : " +data );
            activity.runOnUiThread(new Runnable() {
                public void run() {
                    if (!disconnected()) {
                        handler.onMessage(data);
                    }
                }
            });
        }

        @JavascriptInterface
        public void onClose() {
            System.out.println("GAEClient : Close" );
            activity.runOnUiThread(new Runnable() {
                public void run() {
                    if (!disconnected()) {
                        handler.onClose();
                    }
                }
            });
        }

        @JavascriptInterface
        public void onError(final int code, final String description) {
            System.out.println("GAEClient : Erroe : " + description);
            activity.runOnUiThread(new Runnable() {
                public void run() {
                    if (!disconnected()) {
                        handler.onError(code, description);
                    }
                }
            });
        }
    }
}

资产文件夹中的

Channel.html

<html>
  <head>
    <script src="http://192.168.5.86:8080/_ah/channel/jsapi"></script>
  </head>
  <!--
  Helper HTML that redirects Google AppEngine's Channel API to a JS object named
  |androidMessageHandler|, which is expected to be injected into the WebView
  rendering this page by an Android app's class such as AppRTCClient.
  -->
  <body onbeforeunload="closeSocket()" onload="openSocket()">
    <script type="text/javascript">
      var token = androidMessageHandler.getToken();
      if (!token)
        throw "Missing/malformed token parameter: [" + token + "]";

      var channel = null;
      var socket = null;

      function openSocket() {
        channel = new goog.appengine.Channel(token);
        socket = channel.open({
          'onopen': function() { androidMessageHandler.onOpen(); },
          'onmessage': function(msg) { androidMessageHandler.onMessage(msg.data); },
          'onclose': function() { androidMessageHandler.onClose(); },
          'onerror': function(err) { androidMessageHandler.onError(err.code, err.description); }
        });
      }

      function closeSocket() {
        socket.close();
      }
    </script>
  </body>
</html>

Answer 1

可悲的是，我不知道你是否做过这些事情：

在每个应用程序（使用PC或移动设备）上使用SAME眩晕并转动服务器。
您是否在应用程序之间发送ICE候选人（我认为您这样做，但只是为了验证）。
你确定STUN / TURN网址是那些提供错误的网址，因为我无法相信这些事情是关于交叉来源的（它们不应该，因为你只是从客户端连接到交叉源主要是在从外部源加载数据的网页上“使用”。不允许从XHR中执行此操作。我真的认为它与https://apprtc.appspot.com/_ah/channel/jsapi有关，因为这是交叉起源的一个很好的例子。

如果您在移动设备上打开Chrome浏览器中正在使用的网页，该怎么办？那它做什么用的？（请注意，您可以将手机连接到电脑，以获得完整的Chrome开发工具.Chrome在Android设备上运行，但您可以在电脑上看到devtools）。

如果你能提供我这些答案，我可以帮助你。尝试恢复所有这些更改，只使用谷歌的TURN服务器，但只将https://apprtc.appspot.com/_ah/channel/jsapi文件设为本地。

编辑：I see you found your answer。你介意分享吗？

带有本地服务器的ApprtcDemo可以在浏览器之间工作，但不能在浏览器本机上工作

1 个答案: