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server-shutdown
Advanced tools
Changelog
[2.0.0] - 2018-11-18
Readme
At some point, Socket.IO started correctly handling active connections on shutdown. Since the main purpose of this library was to add support for gracefully shutting down a Socket.IO server, I've decided to cease development on this project. It should be easy to replace the usage of this library with the maintained library Stoppable.
Using just server.close
only terminates the server once every connection is closed. This is problematic since,
by design, keep-alive connections can continue to hold the server open, and WebSockets can hold the connection open
for extended periods of time. A naive solution forcefully destroys all the sockets, interrupting any inflight requests.
Another solution is to server.unref
the server, but this isn't a satisfactory solution as it does not allow the
close
event to be used.
This library solves this problem by tracking when a connection is busy, using request
for HTTP connections, and hooking
into write
in the case of WebSockets. The server shutdowns by first stopping any additional connections being made,
closing any idle HTTP and WebSocket connections, closing any busy HTTP connections once the inflight request has completed, and
closing WebSocket connections on finish of a write.
npm install --save server-shutdown
const http = require('http');
const https = require('https');
const ServerShutdown = require('server-shutdown');
const serverShutdown = new ServerShutdown();
const httpServer = http.createServer((req, res) => {
res.end('HTTP response');
}).listen(80);
const httpsServer = https.createServer((req, res) => {
res.end('HTTPS response');
}).listen(443);
serverShutdown.registerServer(httpServer);
serverShutdown.registerServer(httpsServer);
process.on('SIGTERM', () => {
serverShutdown.shutdown(() => {
console.log('All servers shutdown gracefully');
});
});
// continuing from basic uasge
const socketio = require('socket.io');
const io = socketio(httpServer);
serverShutdown.registerServer(io, ServerShutdown.Adapters.socketio);
This library uses debug to produce debugging output. To enable add DEBUG=server-shutdown
before
your run command.
This project is released under the ISC license. See LICENSE.
FAQs
Gracefully shutdown any number of HTTP and WebSocket servers in node
The npm package server-shutdown receives a total of 543 weekly downloads. As such, server-shutdown popularity was classified as not popular.
We found that server-shutdown demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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