HTML5 Websocket within Webworker
You must listen for the onopen websocket event before sending your first message.
socket.onopen = function(){
// send some message
};
Try this:
var WebSocketStateEnum = {CONNECTING: 0, OPEN: 1, CLOSING: 2, CLOSED: 3};
var wsChannel;
var msgQueue = [];
// Using like this:
sendMessage(_ => {
wsChannel.send('message...'); // This will wait until the connection open, unless it is already opened
});
function sendMessage(task) {
if (!wsChannel || wsChannel.readyState != WebSocketStateEnum.OPEN) {
msgQueue.push(task);
} else {
task();
}
if (!wsChannel) {
wsChannel = new WebSocket('ws://your-url');
wsChannel.onopen = function() {
while (msgQueue.length > 0) {
msgQueue.shift()();
}
}
wsChannel.onmessage = function(evt) {
// message received here
}
wsChannel.onclose = function(evt) {
wsChannel = null;
}
wsChannel.onerror = function(evt) {
if (wsChannel.readyState == WebSocketStateEnum.OPEN) {
wsChannel.close();
} else {
wsChannel = null;
}
}
}
}