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84731e8f00
Summary: This is purely a prototype at the moment, but the basic functionality sort of works. I'm not sure how far I want to go with this but I think we might be able to get somewhere without it being gross. The idea here is to build a notification server WITHOUT using Comet, since Comet is extremely difficult and complicated. Instead, I use Flash on the client. LocalConnection allows flash instances to talk to each other and connect() can be used as a locking primitive. This allows all the instances to elect a master instance in a race-safe way. The master is responsible for opening a single connnection to the server. On the server, I use Node.js since PHP is pretty unsuitable for this task. See Github Issue #3: https://github.com/facebook/phabricator/issues/3 One thing I need to figure out next is if I can reasonably do SSL/TSL over Flash (it looks like I can, in theory, with the as3crypto library) or if the server needs to just send down version information and trigger a separate Ajax call on the client. Test Plan: Created a client pool and connected it to the server, with election and failover apparently working correctly. Reviewed By: aran Reviewers: Girish, aran, jungejason, tuomaspelkonen, davidrecordon Commenters: Girish, davidrecordon CC: aran, epriestley, Girish, davidrecordon Differential Revision: 284
42 lines
966 B
JavaScript
Executable file
42 lines
966 B
JavaScript
Executable file
var net = require('net');
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function getFlashPolicy() {
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return [
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'<?xml version="1.0"?>',
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'<!DOCTYPE cross-domain-policy SYSTEM ' +
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'"http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd">',
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'<cross-domain-policy>',
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'<allow-access-from domain="*" to-ports="*"/>',
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'</cross-domain-policy>'
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].join("\n");
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}
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net.createServer(function(socket) {
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socket.on('data', function() {
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socket.write(getFlashPolicy() + '\0');
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});
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}).listen(843);
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var sp_server = net.createServer(function(socket) {
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function xwrite() {
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var data = {hi: "hello"};
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var serial = JSON.stringify(data);
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var length = Buffer.byteLength(serial, 'utf8');
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length = length.toString();
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while (length.length < 8) {
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length = "0" + length;
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}
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socket.write(length + serial);
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console.log('write : ' + length + serial);
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}
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socket.on('connect', function() {
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xwrite();
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setInterval(xwrite, 1000);
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});
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}).listen(2600);
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