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request-header-host.test.js
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'use strict'
const { test } = require('node:test')
const { connect } = require('node:net')
const Fastify = require('..')
// RFC9112
// https://www.rfc-editor.org/rfc/rfc9112
test('Return 400 when Host header is missing', (t, done) => {
t.plan(2)
let data = Buffer.alloc(0)
const fastify = Fastify()
t.after(() => fastify.close())
fastify.get('/', async function () {
t.assert.fail('should not reach handler')
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 400 Bad Request/
)
done()
})
})
})
test('Return 400 when Host header is missing with trust proxy', (t, done) => {
t.plan(2)
let data = Buffer.alloc(0)
const fastify = Fastify({
trustProxy: true
})
t.after(() => fastify.close())
fastify.get('/', async function () {
t.assert.fail('should not reach handler')
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 400 Bad Request/
)
done()
})
})
})
test('Return 200 when Host header is empty', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\nHost:\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
test('Return 200 when Host header is empty with trust proxy', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
trustProxy: true,
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\nHost:\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
// Node.js allows exploiting RFC9112
// https://nodejs.org/docs/latest-v22.x/api/http.html#httpcreateserveroptions-requestlistener
test('Return 200 when Host header is missing and http.requireHostHeader = false', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
http: {
requireHostHeader: false
},
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
test('Return 200 when Host header is missing and http.requireHostHeader = false with trust proxy', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
http: {
requireHostHeader: false
},
trustProxy: true,
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
test('Return 200 when Host header is missing using HTTP/1.0', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.0\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
test('Return 200 when Host header is missing with trust proxy using HTTP/1.0', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
trustProxy: true,
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.0\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
test('Return 200 when Host header is removed by schema', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', {
schema: {
headers: {
type: 'object',
properties: {},
additionalProperties: false
}
}
}, async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\nHost: localhost\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})
test('Return 200 when Host header is removed by schema with trust proxy', (t, done) => {
t.plan(5)
let data = Buffer.alloc(0)
const fastify = Fastify({
trustProxy: true,
keepAliveTimeout: 10
})
t.after(() => fastify.close())
fastify.get('/', {
schema: {
headers: {
type: 'object',
properties: {},
additionalProperties: false
}
}
}, async function (request) {
t.assert.strictEqual(request.host, '')
t.assert.strictEqual(request.hostname, '')
t.assert.strictEqual(request.port, null)
return { ok: true }
})
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
const socket = connect(fastify.server.address().port)
socket.write('GET / HTTP/1.1\r\nHost: localhost\r\n\r\n')
socket.on('data', c => (data = Buffer.concat([data, c])))
socket.on('end', () => {
t.assert.match(
data.toString('utf-8'),
/^HTTP\/1.1 200 OK/
)
done()
})
})
})