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'use strict'
const { test, skip } = require('tap')
const dgram = require('dgram')
const { Resolver } = require('dns')
const dnsPacket = require('dns-packet')
const { createServer } = require('http')
const { Client, Agent, request } = require('..')
const { nodeHasAutoSelectFamily } = require('../lib/core/util')
/*
* IMPORTANT
*
* As only some version of Node have autoSelectFamily enabled by default (>= 20), make sure the option is always
* explicitly passed in tests in this file to avoid compatibility problems across release lines.
*
*/
if (!nodeHasAutoSelectFamily) {
skip('autoSelectFamily is not supportee')
process.exit()
}
function _lookup (resolver, hostname, options, cb) {
resolver.resolve(hostname, 'ANY', (err, replies) => {
if (err) {
return cb(err)
}
const hosts = replies
.map((r) => ({ address: r.address, family: r.type === 'AAAA' ? 6 : 4 }))
.sort((a, b) => b.family - a.family)
if (options.all === true) {
return cb(null, hosts)
}
return cb(null, hosts[0].address, hosts[0].family)
})
}
function createDnsServer (ipv6Addr, ipv4Addr, cb) {
// Create a DNS server which replies with a AAAA and a A record for the same host
const socket = dgram.createSocket('udp4')
socket.on('message', (msg, { address, port }) => {
const parsed = dnsPacket.decode(msg)
const response = dnsPacket.encode({
type: 'answer',
id: parsed.id,
questions: parsed.questions,
answers: [
{ type: 'AAAA', class: 'IN', name: 'example.org', data: '::1', ttl: 123 },
{ type: 'A', class: 'IN', name: 'example.org', data: '127.0.0.1', ttl: 123 }
]
})
socket.send(response, port, address)
})
socket.bind(0, () => {
const resolver = new Resolver()
resolver.setServers([`127.0.0.1:${socket.address().port}`])
cb(null, { dnsServer: socket, lookup: _lookup.bind(null, resolver) })
})
}
test('with autoSelectFamily enable the request succeeds when using request', (t) => {
t.plan(3)
createDnsServer('::1', '127.0.0.1', function (_, { dnsServer, lookup }) {
const server = createServer((req, res) => {
res.end('hello')
})
t.teardown(() => {
server.close()
dnsServer.close()
})
server.listen(0, '127.0.0.1', () => {
const agent = new Agent({ connect: { lookup }, autoSelectFamily: true })
request(
`http://example.org:${server.address().port}/`, {
method: 'GET',
dispatcher: agent
}, (err, { statusCode, body }) => {
t.error(err)
let response = Buffer.alloc(0)
body.on('data', chunk => {
response = Buffer.concat([response, chunk])
})
body.on('end', () => {
t.strictSame(statusCode, 200)
t.strictSame(response.toString('utf-8'), 'hello')
})
})
})
})
})
test('with autoSelectFamily enable the request succeeds when using a client', (t) => {
t.plan(3)
createDnsServer('::1', '127.0.0.1', function (_, { dnsServer, lookup }) {
const server = createServer((req, res) => {
res.end('hello')
})
t.teardown(() => {
server.close()
dnsServer.close()
})
server.listen(0, '127.0.0.1', () => {
const client = new Client(`http://example.org:${server.address().port}`, { connect: { lookup }, autoSelectFamily: true })
t.teardown(client.destroy.bind(client))
client.request({
path: '/',
method: 'GET'
}, (err, { statusCode, body }) => {
t.error(err)
let response = Buffer.alloc(0)
body.on('data', chunk => {
response = Buffer.concat([response, chunk])
})
body.on('end', () => {
t.strictSame(statusCode, 200)
t.strictSame(response.toString('utf-8'), 'hello')
})
})
})
})
})
test('with autoSelectFamily disabled the request fails when using request', (t) => {
t.plan(1)
createDnsServer('::1', '127.0.0.1', function (_, { dnsServer, lookup }) {
const server = createServer((req, res) => {
res.end('hello')
})
t.teardown(() => {
server.close()
dnsServer.close()
})
server.listen(0, '127.0.0.1', () => {
const agent = new Agent({ connect: { lookup, autoSelectFamily: false } })
request(`http://example.org:${server.address().port}`, {
method: 'GET',
dispatcher: agent
}, (err, { statusCode, body }) => {
t.ok(['ECONNREFUSED', 'EAFNOSUPPORT'].includes(err.code))
})
})
})
})
test('with autoSelectFamily disabled the request fails when using a client', (t) => {
t.plan(1)
createDnsServer('::1', '127.0.0.1', function (_, { dnsServer, lookup }) {
const server = createServer((req, res) => {
res.end('hello')
})
t.teardown(() => {
server.close()
dnsServer.close()
})
server.listen(0, '127.0.0.1', () => {
const client = new Client(`http://example.org:${server.address().port}`, { connect: { lookup, autoSelectFamily: false } })
t.teardown(client.destroy.bind(client))
client.request({
path: '/',
method: 'GET'
}, (err, { statusCode, body }) => {
t.ok(['ECONNREFUSED', 'EAFNOSUPPORT'].includes(err.code))
})
})
})
})
|
