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feat: Support autoSelectFamily when connecting. (nodejs#1914)
* feat: Support autoSelectFamily when connecting. * test: Fixed test.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,187 @@ | ||
| 'use strict' | ||
|
|
||
| const { test } = 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') | ||
|
|
||
| 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:${socket.address().port}`]) | ||
|
|
||
| cb(null, { dnsServer: socket, lookup: _lookup.bind(null, resolver) }) | ||
| }) | ||
| } | ||
|
|
||
| if (nodeHasAutoSelectFamily) { | ||
| test('with autoSelectFamily enable the request succeeds when using request', (t) => { | ||
| t.plan(3) | ||
|
|
||
| createDnsServer('::1', '127.0.0.1', function (_, { dnsServer, lookup }) { | ||
| const server = createServer((req, res) => { | ||
| res.end('hello') | ||
| }) | ||
|
|
||
| t.teardown(() => { | ||
| server.close() | ||
| dnsServer.close() | ||
| }) | ||
|
|
||
| server.listen(0, '127.0.0.1', () => { | ||
| const agent = new Agent({ connect: { lookup }, autoSelectFamily: true }) | ||
|
|
||
| request( | ||
| `http://example.org:${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:${server.address().port}`, { connect: { lookup }, autoSelectFamily: true }) | ||
|
|
||
| t.teardown(client.destroy.bind(client)) | ||
|
|
||
| client.request({ | ||
| path: '/', | ||
| method: 'GET' | ||
| }, (err, { statusCode, body }) => { | ||
| t.error(err) | ||
|
|
||
| let response = Buffer.alloc(0) | ||
|
|
||
| body.on('data', chunk => { | ||
| response = Buffer.concat([response, chunk]) | ||
| }) | ||
|
|
||
| body.on('end', () => { | ||
| t.strictSame(statusCode, 200) | ||
| t.strictSame(response.toString('utf-8'), 'hello') | ||
| }) | ||
| }) | ||
| }) | ||
| }) | ||
| }) | ||
| } | ||
|
|
||
| test('with autoSelectFamily disabled the request fails when using request', (t) => { | ||
| t.plan(1) | ||
|
|
||
| createDnsServer('::1', '127.0.0.1', function (_, { dnsServer, lookup }) { | ||
| const server = createServer((req, res) => { | ||
| res.end('hello') | ||
| }) | ||
|
|
||
| t.teardown(() => { | ||
| server.close() | ||
| dnsServer.close() | ||
| }) | ||
|
|
||
| server.listen(0, '127.0.0.1', () => { | ||
| const agent = new Agent({ connect: { lookup } }) | ||
|
|
||
| request(`http://example.org:${server.address().port}`, { | ||
| method: 'GET', | ||
| dispatcher: agent | ||
| }, (err, { statusCode, body }) => { | ||
| t.strictSame(err.code, 'ECONNREFUSED') | ||
| }) | ||
| }) | ||
| }) | ||
| }) | ||
|
|
||
| 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 } }) | ||
| t.teardown(client.destroy.bind(client)) | ||
|
|
||
| client.request({ | ||
| path: '/', | ||
| method: 'GET' | ||
| }, (err, { statusCode, body }) => { | ||
| t.strictSame(err.code, 'ECONNREFUSED') | ||
| }) | ||
| }) | ||
| }) | ||
| }) |
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