[英]WebSocket connection not establish using JavaScript
这用于热敏打印,当我运行应用程序时,它在控制台中显示以下错误:
jquery.websocket.js:45未捕获的DOMException:无法在“ WebSocket”上执行“发送”:仍处于CONNECTING状态。
码:
<script type="text/javascript">
function connect() {
debugger;
var ws = new WebSocket("wss://192.168.1.23:9100");
ws.onopen = function () {
alert("About to send data");
ws.send("Hello World"); // I WANT TO SEND THIS MESSAGE TO THE SERVER!!!!!!!!
alert("Message sent!");
};
ws.onmessage = function (evt) {
alert("About to receive data");
var received_msg = evt.data;
alert("Message received = " + received_msg);
};
ws.onclose = function () {
// websocket is closed.
alert("Connection is closed...");
};
};
</script>
经过您的代码测试,似乎可以正常工作。能否从您的侧面通过'wss://echo.websocket.org'网址进行检查? 我已引用https://www.websocket.org/echo.html网址。 下面是相同的代码
<!DOCTYPE html>
<html>
<head>
<title>To test web socket</title>
<script type="text/javascript">
function connect() {
debugger;
var ws = new WebSocket("wss://echo.websocket.org");
ws.onopen = function () {
alert("About to send data");
ws.send("Hello World"); // I WANT TO SEND THIS MESSAGE TO THE SERVER!!!!!!!!
alert("Message sent!");
};
ws.onmessage = function (evt) {
alert("About to receive data");
var received_msg = evt.data;
alert("Message received = " + received_msg);
};
ws.onclose = function () {
// websocket is closed.
alert("Connection is closed...");
};
};
</script>
</head>
<body>
<button onclick="connect()">Connect</button>
</body>
</html>
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