Chrome DevTools:远程DOM修改

Question

我正在创建一个应该远程控制浏览器窗口的小应用程序:导航、填充表单等等。我正在尝试使用Chrome调试和C#来存档目标。目前，原型与浏览器连接，获取可用页面列表并建立WebSocket连接。

--remote-debugging-port=9123

• Connecto

1. Start chrome.exe chrome.exe到ws://localhost:9123/devtools/page/1并发送：

请求：{ "id"：1，“方法”："DOM.setOuterHTML"，"params"：{"nodeId"：1，"outerHTML"：“}

它看起来是错误的，但没有返回错误。

代码：

       var client = new WebClient();
       var pages = client.DownloadString("http://localhost:9123/json");
       Console.WriteLine(pages); // works well, displays JSON with info about pages

       // create WebSocket
       var socket = new WebSockets.WebSocket("ws://localhost:9123/devtools/page/1");
       // it should print messages to console:
       socket.OnMessage += (sender, eventdata) => Console.WriteLine(eventdata);

       // works well - sends and recieves handshaking messages
       socket.Connect();

       Console.WriteLine("\nType \"exit\" to exit.\n");

       string data;
       while (true)
       {
           Thread.Sleep(500);
           Console.Write("> ");
           data = Console.ReadLine();
           if (data == "exit")
               break;
           // sends data:
           socket.Send(data);
       }

数据如何发送到WebSocket流：

           byte[] dataBuffer = Encoding.UTF8.GetBytes(data);
           _wsStream.WriteByte(0x00);
           _wsStream.Write(dataBuffer, 0, dataBuffer.Length);
           _wsStream.WriteByte(0xff);

而阅读永远不会回来：

   private void Message() // started in different thread
   {
       while (_readyState == WsState.Open)
       {
           string data = Receive(); // does _wsStream.ReadByte(); and stops on it forever
           var handler = OnMessage;
           if (null != handler && data != null)
               handler(this, data);
       }
   }

请你帮我处理一下命令语法和疑难解答.

谢谢,

亚历克斯

Answer 1

我建议您使用WebSocket4Net NuGet包。

using WebSocket4Net;

//Create new socket connection
WebSocket socket = new WebSocket(tab.webSocketDebuggerUrl);
socket.MessageReceived += MessageReceived;
socket.Open();
socket.Send("String to send");

private static void Ss_MessageReceived(object sender, WebSocket4Net.MessageReceivedEventArgs e)
{
    //Handle here response from server
}