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'use strict'
const http = require('node:http')
const https = require('node:https')
const http2 = require('node:http2')
const dns = require('node:dns')
const os = require('node:os')
const { kState, kOptions, kServerBindings, kHttp2ServerSessions } = require('./symbols')
const { FSTWRN003 } = require('./warnings')
const { onListenHookRunner } = require('./hooks')
const {
FST_ERR_REOPENED_CLOSE_SERVER,
FST_ERR_REOPENED_SERVER,
FST_ERR_LISTEN_OPTIONS_INVALID,
FST_ERR_FORCE_CLOSE_CONNECTIONS_IDLE_NOT_AVAILABLE
} = require('./errors')
const noopSet = require('./noop-set')
const PonyPromise = require('./promise')
module.exports.createServer = createServer
function defaultResolveServerListeningText (address) {
return `Server listening at ${address}`
}
function createServer (options, httpHandler) {
const server = getServerInstance(options, httpHandler)
// `this` is the Fastify object
function listen (
listenOptions = { port: 0, host: 'localhost' },
cb = undefined
) {
if (typeof cb === 'function') {
if (cb.constructor.name === 'AsyncFunction') {
FSTWRN003('listen method')
}
listenOptions.cb = cb
}
if (listenOptions.signal) {
if (typeof listenOptions.signal.on !== 'function' && typeof listenOptions.signal.addEventListener !== 'function') {
throw new FST_ERR_LISTEN_OPTIONS_INVALID('Invalid options.signal')
}
// copy the current signal state
this[kState].aborted = listenOptions.signal.aborted
if (this[kState].aborted) {
return this.close()
} else {
const onAborted = () => {
this[kState].aborted = true
this.close()
}
listenOptions.signal.addEventListener('abort', onAborted, { once: true })
}
}
// If we have a path specified, don't default host to 'localhost' so we don't end up listening
// on both path and host
// See https://github.com/fastify/fastify/issues/4007
let host
if (listenOptions.path == null) {
host = listenOptions.host ?? 'localhost'
} else {
host = listenOptions.host
}
if (!Object.hasOwn(listenOptions, 'host') ||
listenOptions.host == null) {
listenOptions.host = host
}
if (host === 'localhost') {
listenOptions.cb = (err, address) => {
if (err) {
// the server did not start
cb(err, address)
return
}
multipleBindings.call(this, server, httpHandler, options, listenOptions, () => {
this[kState].listening = true
cb(null, address)
onListenHookRunner(this)
})
}
} else {
listenOptions.cb = (err, address) => {
// the server did not start
if (err) {
cb(err, address)
return
}
this[kState].listening = true
cb(null, address)
onListenHookRunner(this)
}
}
// https://github.com/nodejs/node/issues/9390
// If listening to 'localhost', listen to both 127.0.0.1 or ::1 if they are available.
// If listening to 127.0.0.1, only listen to 127.0.0.1.
// If listening to ::1, only listen to ::1.
if (cb === undefined) {
const listening = listenPromise.call(this, server, listenOptions)
return listening.then(address => {
const { promise, resolve } = PonyPromise.withResolvers()
if (host === 'localhost') {
multipleBindings.call(this, server, httpHandler, options, listenOptions, () => {
this[kState].listening = true
resolve(address)
onListenHookRunner(this)
})
} else {
resolve(address)
onListenHookRunner(this)
}
return promise
})
}
this.ready(listenCallback.call(this, server, listenOptions))
}
const serverHasCloseAllConnections = typeof server.closeAllConnections === 'function'
const serverHasCloseIdleConnections = typeof server.closeIdleConnections === 'function'
const serverHasCloseHttp2Sessions = typeof server.closeHttp2Sessions === 'function'
let forceCloseConnections = options.forceCloseConnections
if (forceCloseConnections === 'idle' && !serverHasCloseIdleConnections) {
throw new FST_ERR_FORCE_CLOSE_CONNECTIONS_IDLE_NOT_AVAILABLE()
} else if (typeof forceCloseConnections !== 'boolean') {
/* istanbul ignore next: only one branch can be valid in a given Node.js version */
forceCloseConnections = serverHasCloseIdleConnections ? 'idle' : false
}
const keepAliveConnections = !serverHasCloseAllConnections && forceCloseConnections === true ? new Set() : noopSet()
return {
server,
listen,
forceCloseConnections,
serverHasCloseAllConnections,
serverHasCloseHttp2Sessions,
keepAliveConnections
}
}
function multipleBindings (mainServer, httpHandler, serverOpts, listenOptions, onListen) {
// the main server is started, we need to start the secondary servers
this[kState].listening = false
// let's check if we need to bind additional addresses
dns.lookup(listenOptions.host, { all: true }, (dnsErr, addresses) => {
if (dnsErr || this[kState].aborted) {
// not blocking the main server listening
// this.log.warn('dns.lookup error:', dnsErr)
onListen()
return
}
const isMainServerListening = mainServer.listening && serverOpts.serverFactory
let binding = 0
let bound = 0
if (!isMainServerListening) {
const primaryAddress = mainServer.address()
for (const adr of addresses) {
if (adr.address !== primaryAddress.address) {
binding++
const secondaryOpts = Object.assign({}, listenOptions, {
host: adr.address,
port: primaryAddress.port,
cb: (_ignoreErr) => {
bound++
if (!_ignoreErr) {
this[kServerBindings].push(secondaryServer)
}
if (bound === binding) {
// regardless of the error, we are done
onListen()
}
}
})
const secondaryServer = getServerInstance(serverOpts, httpHandler)
const closeSecondary = () => {
// To avoid falling into situations where the close of the
// secondary server is triggered before the preClose hook
// is done running, we better wait until the main server is closed.
// No new TCP connections are accepted
// We swallow any error from the secondary server
secondaryServer.close(() => {})
if (typeof secondaryServer.closeAllConnections === 'function' && serverOpts.forceCloseConnections === true) {
secondaryServer.closeAllConnections()
}
if (typeof secondaryServer.closeHttp2Sessions === 'function') {
secondaryServer.closeHttp2Sessions()
}
}
secondaryServer.on('upgrade', mainServer.emit.bind(mainServer, 'upgrade'))
mainServer.on('unref', closeSecondary)
mainServer.on('close', closeSecondary)
mainServer.on('error', closeSecondary)
this[kState].listening = false
listenCallback.call(this, secondaryServer, secondaryOpts)()
}
}
}
// no extra bindings are necessary
if (binding === 0) {
onListen()
return
}
// in test files we are using unref so we need to propagate the unref event
// to the secondary servers. It is valid only when the user is
// listening on localhost
const originUnref = mainServer.unref
mainServer.unref = function () {
originUnref.call(mainServer)
mainServer.emit('unref')
}
})
}
function listenCallback (server, listenOptions) {
const wrap = (err) => {
server.removeListener('error', wrap)
server.removeListener('listening', wrap)
if (!err) {
const address = logServerAddress.call(
this,
server,
listenOptions.listenTextResolver || defaultResolveServerListeningText
)
listenOptions.cb(null, address)
} else {
this[kState].listening = false
listenOptions.cb(err, null)
}
}
return (err) => {
if (err != null) return listenOptions.cb(err)
if (this[kState].listening && this[kState].closing) {
return listenOptions.cb(new FST_ERR_REOPENED_CLOSE_SERVER(), null)
}
if (this[kState].listening) {
return listenOptions.cb(new FST_ERR_REOPENED_SERVER(), null)
}
server.once('error', wrap)
if (!this[kState].closing) {
server.once('listening', wrap)
server.listen(listenOptions)
this[kState].listening = true
}
}
}
function listenPromise (server, listenOptions) {
if (this[kState].listening && this[kState].closing) {
return Promise.reject(new FST_ERR_REOPENED_CLOSE_SERVER())
}
if (this[kState].listening) {
return Promise.reject(new FST_ERR_REOPENED_SERVER())
}
return this.ready().then(() => {
// skip listen when aborted during ready
if (this[kState].aborted) return
const { promise, resolve, reject } = PonyPromise.withResolvers()
const errEventHandler = (err) => {
cleanup()
this[kState].listening = false
reject(err)
}
const listeningEventHandler = () => {
cleanup()
this[kState].listening = true
resolve(logServerAddress.call(
this,
server,
listenOptions.listenTextResolver || defaultResolveServerListeningText
))
}
function cleanup () {
server.removeListener('error', errEventHandler)
server.removeListener('listening', listeningEventHandler)
}
server.once('error', errEventHandler)
server.once('listening', listeningEventHandler)
server.listen(listenOptions)
return promise
})
}
function getServerInstance (options, httpHandler) {
if (options.serverFactory) {
// User provided server instance
return options.serverFactory(httpHandler, options)
}
// We have accepted true as a valid way to init https but node requires an options obj
const httpsOptions = options.https === true ? {} : options.https
if (options.http2) {
const server = typeof httpsOptions === 'object' ? http2.createSecureServer(httpsOptions, httpHandler) : http2.createServer(options.http, httpHandler)
server.on('session', (session) => session.setTimeout(options.http2SessionTimeout, () => {
session.close()
}))
// This is only needed for Node.js versions < 24.0.0 since Node.js added native
// closeAllSessions() on server.close() support for HTTP/2 servers in v24.0.0
if (options.forceCloseConnections === true) {
server.closeHttp2Sessions = createCloseHttp2SessionsByHttp2Server(server)
}
server.setTimeout(options.connectionTimeout)
return server
}
// HTTP1 server instance
const server = httpsOptions
? https.createServer(httpsOptions, httpHandler)
: http.createServer(options.http, httpHandler)
server.keepAliveTimeout = options.keepAliveTimeout
server.requestTimeout = options.requestTimeout
server.setTimeout(options.connectionTimeout)
// We treat zero as null(node default) so we do not pass zero to the server instance
if (options.maxRequestsPerSocket > 0) {
server.maxRequestsPerSocket = options.maxRequestsPerSocket
}
return server
}
/**
* Inspects the provided `server.address` object and returns a
* normalized list of IP address strings. Normalization in this
* case refers to mapping wildcard `0.0.0.0` to the list of IP
* addresses the wildcard refers to.
*
* @see https://nodejs.org/docs/latest/api/net.html#serveraddress
*
* @param {object} A server address object as described in the
* linked docs.
*
* @returns {string[]}
*/
function getAddresses (address) {
if (address.address === '0.0.0.0') {
return Object.values(os.networkInterfaces()).flatMap((iface) => {
return iface.filter((iface) => iface.family === 'IPv4')
}).sort((iface) => {
/* c8 ignore next 2 */
// Order the interfaces so that internal ones come first
return iface.internal ? -1 : 1
}).map((iface) => { return iface.address })
}
return [address.address]
}
function logServerAddress (server, listenTextResolver) {
let addresses
const isUnixSocket = typeof server.address() === 'string'
if (!isUnixSocket) {
if (server.address().address.indexOf(':') === -1) {
// IPv4
addresses = getAddresses(server.address()).map((address) => address + ':' + server.address().port)
} else {
// IPv6
addresses = ['[' + server.address().address + ']:' + server.address().port]
}
addresses = addresses.map((address) => ('http' + (this[kOptions].https ? 's' : '') + '://') + address)
} else {
addresses = [server.address()]
}
for (const address of addresses) {
this.log.info(listenTextResolver(address))
}
return addresses[0]
}
/**
* @param {http2.Http2Server} http2Server
* @returns {() => void}
*/
function createCloseHttp2SessionsByHttp2Server (http2Server) {
/**
* @type {Set<http2.Http2Session>}
*/
http2Server[kHttp2ServerSessions] = new Set()
http2Server.on('session', function (session) {
session.once('connect', function () {
http2Server[kHttp2ServerSessions].add(session)
})
session.once('close', function () {
http2Server[kHttp2ServerSessions].delete(session)
})
session.once('frameError', function (type, code, streamId) {
if (streamId === 0) {
// The stream ID is 0, which means that the error is related to the session itself.
// If the event is not associated with a stream, the Http2Session will be shut down immediately
http2Server[kHttp2ServerSessions].delete(session)
}
})
session.once('goaway', function () {
// The Http2Session instance will be shut down automatically when the 'goaway' event is emitted.
http2Server[kHttp2ServerSessions].delete(session)
})
})
return function closeHttp2Sessions () {
if (http2Server[kHttp2ServerSessions].size === 0) {
return
}
for (const session of http2Server[kHttp2ServerSessions]) {
session.close()
}
}
}