我想在浏览器(Chrome)和Android手机之间建立连接。我有一个应该一直打开的网页,并且应该等待一个在Android上的某个事件开始的服务器。是否有可能在浏览器中使用websockets等待服务器?
我的代码:
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
function waitForSocketConnection(socket, callback){
setTimeout(
function() {
if (socket.readyState === 1) {
console.log("Connection is made")
if(callback != null){
callback();
}
return;
} else {
console.log("wait for connection...")
waitForSocketConnection(socket);
}
}, 5); // wait 5 milisecond for the connection...
}
function WebSocketTest()
{
if ("WebSocket" in window)
{
alert("WebSocket is supported by your Browser!");
// Let us open a web socket
var ws = new WebSocket("ws://192.168.0.15:8887");
waitForSocketConnection(ws, function() {alert('callback')})
ws.onopen = function()
{
// Web Socket is connected, send data using send()
ws.send("Message to send");
alert("Message is sent...");
};
ws.onmessage = function (evt)
{
var received_msg = evt.data;
alert("Message is received...");
};
ws.onclose = function()
{
// websocket is closed.
alert("Connection is closed...");
};
}
else
{
// The browser doesn't support WebSocket
alert("WebSocket NOT supported by your Browser!");
}
}
</script>
</head>
<body>
<div id="sse">
<a href="javascript:WebSocketTest()">Run WebSocket</a>
</div>
</body>
</html>
如果我点击运行的WebSocket当服务器没有运行然后我得到警报“连接已关闭”,即使我启动服务器我不明白“连接时”在控制台上。它只在服务器运行之前运行,然后单击运行WebSocket。如何使它工作?
这个问题是不是属于机器人?你在哪里得到这个错误连接已关闭“?? –
它只是浏览器(html5)websockets。我在浏览器中得到这个消息。只有服务器在Android上运行。 – latata
你有没有从android端发生任何错误 –