Javascript websocket—从websocket服务器获取消息并将其发送到客户端

我正在努力学习WebSocket是如何工作的。我能够从websocket服务器获取交易数据并在控制台上打印。然而，我试图理解如何将该消息传递到我的websocket服务器，以便将其发送到我的websocket客户端。基本上，我想在浏览器上打印每条消息

"use strict";

const WebSocket = require("ws");

const binanceWS = new WebSocket("wss://stream.binance.com:9443/ws/stratbtc@trade");

binanceWS.on("open", function open() {
    console.log("open action");
});

binanceWS.on("message", function incoming(data) {
    console.log(data);
});

现在，这个

binanceWS

将在收到数据时打印数据。我试图做的事情是如何传递到我的WebSocket.Server对象的

send

eventlistener。如您所见，wss本身的一个示例在存在连接时使用websocket对象

const wss = new WebSocket.Server({ port: 8080 });

wss.on('connection', function connection(ws) {
  ws.on('message', function incoming(message) {
    console.log('received: %s', message);
  });

  ws.send('something');
});

谢谢

注意：我所说的结构是这样的。基本上，我会让websocket消费者获取交易数据。在同一个主机（目前为localhost）中，将有一个websocket服务器。此websocket服务器将向每个客户端websocket发送数据

成功： 好的，我是通过在websocket服务器连接中定义消费者websocket（

binanceWS

）

message

侦听器来实现的。但我不确定这是不是一个好办法

"use strict";

const WebSocket = require("ws");

const binanceWS = new WebSocket("wss://stream.binance.com:9443/ws/stratbtc@trade");

binanceWS.on("open", function open() {
    console.log("open action");
});

const wss = new WebSocket.Server({ port: 8080 });

wss.on('connection', function connection(ws) {
  ws.on('message', function incoming(message) {
    console.log('received: %s', message);
  });

  binanceWS.on("message", function incoming(data) {
      ws.send(data);
  });
});

---

单个网匣

//websocket connection event will return a socket you can later use
binanceWS.on("connection", function(socket) {
    socket.on("message", function incoming(data) {
    console.log(data);
    // if you want to send that message back to the client who sent it, 
    // you can use send method on the socket
     socket.send(data)
    });
});

//websocket connection event will return a socket you can later use
binanceWS.on("connection", function(socket) {
    // create another websocket here
    const wss = new WebSocket.Server({ port: 8080 });

    // connect the second websocket
     wss.on("connection", function(ws) {
      // start listening to first websocket incoming messages 
      // if second communication has successully been instantiated 
      socket.on("message", function incoming(data) {
      // send the data using the second websocket
      ws.send(data)
      })
    });
});

const socket = new WebSocket('server_url'); // Connection opened 
socket.addEventListener('message', function (event) { socket.send('send message'); });

嵌套websocket

//websocket connection event will return a socket you can later use
binanceWS.on("connection", function(socket) {
    socket.on("message", function incoming(data) {
    console.log(data);
    // if you want to send that message back to the client who sent it, 
    // you can use send method on the socket
     socket.send(data)
    });
});

//websocket connection event will return a socket you can later use
binanceWS.on("connection", function(socket) {
    // create another websocket here
    const wss = new WebSocket.Server({ port: 8080 });

    // connect the second websocket
     wss.on("connection", function(ws) {
      // start listening to first websocket incoming messages 
      // if second communication has successully been instantiated 
      socket.on("message", function incoming(data) {
      // send the data using the second websocket
      ws.send(data)
      })
    });
});

const socket = new WebSocket('server_url'); // Connection opened 
socket.addEventListener('message', function (event) { socket.send('send message'); });

然后，您需要在您的客户机中有这个最小的代码，您将看到服务器和客户机之间的交互

客户端

//websocket connection event will return a socket you can later use
binanceWS.on("connection", function(socket) {
    socket.on("message", function incoming(data) {
    console.log(data);
    // if you want to send that message back to the client who sent it, 
    // you can use send method on the socket
     socket.send(data)
    });
});

//websocket connection event will return a socket you can later use
binanceWS.on("connection", function(socket) {
    // create another websocket here
    const wss = new WebSocket.Server({ port: 8080 });

    // connect the second websocket
     wss.on("connection", function(ws) {
      // start listening to first websocket incoming messages 
      // if second communication has successully been instantiated 
      socket.on("message", function incoming(data) {
      // send the data using the second websocket
      ws.send(data)
      })
    });
});

const socket = new WebSocket('server_url'); // Connection opened 
socket.addEventListener('message', function (event) { socket.send('send message'); });

---

注意：由于您将使用一个websocket的传入数据进入另一个websocket，因此最好仅在第一个websocket已成功打开时打开第二个websocket

我通过为websocket客户端保留全局列表实现了这一点。当消费者websocket消息事件被触发时，它通过遍历列表发送每个客户端

"use strict";

const WebSocket = require("ws");

const binanceWS = new WebSocket("wss://stream.binance.com:9443/ws/eosbtc@trade");

var websocketList = [];

binanceWS.on("open", function open() {
    console.log("open action");
});

binanceWS.on("message", function incoming(data) {
    console.log(data);

    // send data to every websocket client
    websocketList.forEach(ws => {
        ws.send(data);
    });
});

const wss = new WebSocket.Server({ port: 8080 });

wss.on("connection", function connection(ws) {

    // add ws handle to websocket list.
    websocketList.push(ws);

    ws.on("close", function close() {
        console.log("Disconnected");
    });
});

---

如果我错了，请纠正我。这里您需要一个客户端websocket连接到

binanceWS

。建立连接后，客户端websocket可以向binanceWS发送消息，binanceWS将发送回该消息？是的，就是这样！谢谢你的回复，但我有点困惑。我试图在触发

binanceWS.on（'message'）

时发送数据。为此，我需要创建一个新的WebSocket.Server，并使用该WebSocket服务器对象发送消息。实际上，当触发

message

事件时，我的代码段会将数据发送回客户端。这意味着在您的客户机上，您应该有如下内容：

constsocket=newwebsocket（'server_url'）；socket.addEventListener（'message'，函数（事件）{socket.send（'send message'）；}）我将更新我的答案Hey Edkeveke我用一个小结构更新了我的帖子，我正在尝试完成这个小结构。基于我的结构
binanceWS
一个从exchange获取数据的消费者websocket。然后我需要创建一个websocket服务器，它将从binanceWS获取的数据发送到客户端websocket。清楚了吗？谢谢你能帮我把你的客户发过来吗？我想了解如何在客户端检索websocketList中的项？有点晚，但。。。您不需要保留客户机列表，根据文档（）的规定，您应该在wss中拥有连接的客户机列表，您可以使用该列表进行循环。