Пожалуйста не используйте эту обосранную библиотеку!
You can get the code from npm or bower:
npm install event-source-polyfillbower install event-source-polyfillJust include src/eventsource.js or src/eventsource.min.js in your page to use the polyfill.
Unless a typescript definition file is created for this polyfill, this is how you would use it in an Ionic2 project. It should (in theory) be very similar in an Angular2 project.
npm install event-source-polyfillAdd to (or create) src/app/polyfills.ts (path is relative to where polyfills.ts is) :
import 'path/to/event-source-polyfill/src/eventsource.min.js'Add anywhere you need access to EventSourcePolyfill class :
declare var EventSourcePolyfill: any;import { NativeEventSource, EventSourcePolyfill } from 'event-source-polyfill';
const EventSource = NativeEventSource || EventSourcePolyfill;
// OR: may also need to set as global property
global.EventSource = NativeEventSource || EventSourcePolyfill;padding=true query argument)npm install) and then run the build (npm run build). It should generate a new version of src/eventsource.min.js.http://username:password@github.com.var es = new EventSourcePolyfill('/events', {
headers: {
'X-Custom-Header': 'value'
}
});lastEventIdvar es = new EventSourcePolyfill(hubUrl, {
lastEventIdQueryParameterName: 'Last-Event-Id'
});var PORT = 8081;
var http = require("http");
var fs = require("fs");
var url = require("url");
http.createServer(function (request, response) {
var parsedURL = url.parse(request.url, true);
var pathname = parsedURL.pathname;
if (pathname === "/events.php") {
response.writeHead(200, {
"Content-Type": "text/event-stream",
"Cache-Control": "no-store",
"Access-Control-Allow-Origin": "*"
});
var padding = new Array(2049);
response.write(":" + padding.join(" ") + "\n"); // 2kB padding for IE
response.write("retry: 2000\n");
var lastEventId = Number(request.headers["last-event-id"]) || Number(parsedURL.query.lastEventId) || 0;
var timeoutId = 0;
var i = lastEventId;
var c = i + 100;
var f = function () {
if (++i < c) {
response.write("id: " + i + "\n");
response.write("data: " + i + "\n\n");
timeoutId = setTimeout(f, 1000);
} else {
response.end();
}
};
f();
response.on("close", function () {
clearTimeout(timeoutId);
});
} else {
if (pathname === "/") {
pathname = "/index.html";
}
if (pathname === "/index.html" || pathname === "../src/eventsource.js") {
response.writeHead(200, {
"Content-Type": pathname === "/index.html" ? "text/html" : "text/javascript"
});
response.write(fs.readFileSync(__dirname + pathname));
}
response.end();
}
}).listen(PORT);<?php
header("Content-Type: text/event-stream");
header("Cache-Control: no-store");
header("Access-Control-Allow-Origin: *");
$lastEventId = floatval(isset($_SERVER["HTTP_LAST_EVENT_ID"]) ? $_SERVER["HTTP_LAST_EVENT_ID"] : 0);
if ($lastEventId == 0) {
$lastEventId = floatval(isset($_GET["lastEventId"]) ? $_GET["lastEventId"] : 0);
}
echo ":" . str_repeat(" ", 2048) . "\n"; // 2 kB padding for IE
echo "retry: 2000\n";
// event-stream
$i = $lastEventId;
$c = $i + 100;
while (++$i < $c) {
echo "id: " . $i . "\n";
echo "data: " . $i . ";\n\n";
ob_flush();
flush();
sleep(1);
}
?><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>EventSource example</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<script src="https://github.com/Yaffle/EventSource/raw/master/./src/eventsource.js"></script>
<script>
var es = new EventSource("events.php");
var listener = function (event) {
var div = document.createElement("div");
var type = event.type;
div.appendChild(document.createTextNode(type + ": " + (type === "message" ? event.data : es.url)));
document.body.appendChild(div);
};
es.addEventListener("open", listener);
es.addEventListener("message", listener);
es.addEventListener("error", listener);
</script>
</head>
<body>
</body>
</html>With some dynamic imports it may work in node.js:
Install the library and the dependency:
npm install @titelmedia/node-fetch
npm install event-source-polyfill
x.js:
// The @titelmedia/node-fetch is used instead of node-fetch as it supports ReadableStream Web API
import('@titelmedia/node-fetch').then(function (fetch) {
globalThis.fetch = fetch.default;
globalThis.Response = fetch.default.Response;
import('event-source-polyfill').then(function (x) {
var es = new x.default.EventSourcePolyfill('http://localhost:8004/events');
es.onerror = es.onopen = es.onmessage = function (event) {
console.log(event.type + ': ' + event.data);
};
});
});node --experimental-modules ./x.js
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