我正在尝试从 Binance WebSocket API 流式传输数据,我让它一次处理一个符号。
if ("WebSocket" in window) {
//open websocket
var symbols = getSymbol();
//console.log(symbols);
symbols.forEach(function(entry) {
console.log(entry);
})
var ws = new WebSocket("wss://stream.binance.com:9443/ws/btcusdt@miniTicker")
ws.onopen = function() {
console.log("Binance connected...");
};
ws.onmessage = function(evt) {
var r_msg = evt.data;
var jr_msg = JSON.parse(r_msg);
}
ws.onclose = function() {
console.log("Binance disconnected");
}
} else {
alert("WebSocket is NOT supported");
}
行 var symbols = getSymbol();
创建了一个包含 431 个符号的数组,我的逻辑(以及我想要实现的)是添加 new websocket()
到 forEach 并从所有货币对流式传输价格数据。
我不确定这是否可行,或者更好的解决方案是什么,但我希望从 api 流式传输和显示实时数据。
最佳答案
关于将 new WebSocket()
放入 for-each 的想法应该可行。然而,
我不确定您是否被允许从同一个选项卡打开数百个网络套接字,并且还可能存在一些与之相关的性能问题。
根据API documentation , 可以只打开一个 web 套接字,它会从流列表中向您发送数据,甚至只是所有流。只需像这样构建 URL:
- 特定流:wss://stream.binance.com:9443/ws/stream1/stream2/stream3
- 所有流:wss://stream.binance.com:9443/ws/!miniTicker@arr
这是一个考虑了这些因素的代码示例。默认情况下,此代码使用所有流的 URL,但它也有使用特定流的代码(已注释掉)。
let streams = [
"ethbtc@miniTicker","bnbbtc@miniTicker","wavesbtc@miniTicker","bchabcbtc@miniTicker",
"bchsvbtc@miniTicker","xrpbtc@miniTicker","tusdbtc@miniTicker","eosbtc@miniTicker",
"trxbtc@miniTicker","ltcbtc@miniTicker","xlmbtc@miniTicker","bcptbtc@miniTicker",
"adabtc@miniTicker","zilbtc@miniTicker","xmrbtc@miniTicker","stratbtc@miniTicker",
"zecbtc@miniTicker","qkcbtc@miniTicker","neobtc@miniTicker","dashbtc@miniTicker","zrxbtc@miniTicker"
];
let trackedStreams = [];
//let ws = new WebSocket("wss://stream.binance.com:9443/ws/" + streams.join('/'));
let ws = new WebSocket("wss://stream.binance.com:9443/ws/!miniTicker@arr");
ws.onopen = function() {
console.log("Binance connected...");
};
ws.onmessage = function(evt) {
try {
let msgs = JSON.parse(evt.data);
if (Array.isArray(msgs)) {
for (let msg of msgs) {
handleMessage(msg);
}
} else {
handleMessage(msgs)
}
} catch (e) {
console.log('Unknown message: ' + evt.data, e);
}
}
ws.onclose = function() {
console.log("Binance disconnected");
}
function handleMessage(msg) {
const stream = msg.s;
if (trackedStreams.indexOf(stream) === -1) {
document.getElementById('streams').innerHTML += '<br/>' + stream + ': <span id="stream_' + stream + '"></span>';
trackedStreams.push(stream);
document.getElementById('totalstreams').innerText = trackedStreams.length;
}
document.getElementById('stream_' + stream).innerText = msg.v;
}
<span id="totalstreams"></span> streams tracked<br/>
Total traded base asset volume:<br/>
<div id="streams"></div>
关于javascript - 如何打开多个 WebSocket 流,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53997367/