forked from nodejs/undici
/
redirecting-servers.js
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/
redirecting-servers.js
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'use strict'
const { createServer } = require('http')
function startServer (t, handler) {
return new Promise(resolve => {
const server = createServer(handler)
server.listen(0, () => {
resolve(`localhost:${server.address().port}`)
})
t.teardown(server.close.bind(server))
})
}
async function startRedirectingServer (t) {
const server = await startServer(t, (req, res) => {
// Parse the path and normalize arguments
let [code, redirections, query] = req.url
.slice(1)
.split(/[/?]/)
if (req.url.indexOf('?') !== -1 && !query) {
query = redirections
redirections = 0
}
code = parseInt(code, 10)
redirections = parseInt(redirections, 10)
if (isNaN(code) || code < 0) {
code = 302
} else if (code < 300) {
res.statusCode = code
redirections = 5
}
if (isNaN(redirections) || redirections < 0) {
redirections = 0
}
// On 303, the method must be GET or HEAD after the first redirect
if (code === 303 && redirections > 0 && req.method !== 'GET' && req.method !== 'HEAD') {
res.statusCode = 400
res.setHeader('Connection', 'close')
res.end('Did not switch to GET')
return
}
// End the chain at some point
if (redirections === 5) {
res.setHeader('Connection', 'close')
res.write(
`${req.method} /${redirections}${query ? ` ${query}` : ''} :: ${Object.entries(req.headers)
.map(([k, v]) => `${k}@${v}`)
.join(' ')}`
)
if (parseInt(req.headers['content-length']) > 0) {
res.write(' :: ')
req.pipe(res)
} else {
res.end('')
}
return
}
// Redirect by default
res.statusCode = code
res.setHeader('Connection', 'close')
res.setHeader('Location', `http://${server}/${code}/${++redirections}${query ? `?${query}` : ''}`)
res.end('')
})
return server
}
async function startRedirectingWithBodyServer (t) {
const server = await startServer(t, (req, res) => {
if (req.url === '/') {
res.statusCode = 301
res.setHeader('Connection', 'close')
res.setHeader('Location', `http://${server}/end`)
res.end('REDIRECT')
return
}
res.setHeader('Connection', 'close')
res.end('FINAL')
})
return server
}
function startRedirectingWithoutLocationServer (t) {
return startServer(t, (req, res) => {
// Parse the path and normalize arguments
let [code] = req.url
.slice(1)
.split('/')
.map(r => parseInt(r, 10))
if (isNaN(code) || code < 0) {
code = 302
}
res.statusCode = code
res.setHeader('Connection', 'close')
res.end('')
})
}
async function startRedirectingChainServers (t) {
const server1 = await startServer(t, (req, res) => {
if (req.url === '/') {
res.statusCode = 301
res.setHeader('Connection', 'close')
res.setHeader('Location', `http://${server2}/`)
res.end('')
return
}
res.setHeader('Connection', 'close')
res.end(req.method)
})
const server2 = await startServer(t, (req, res) => {
res.statusCode = 301
res.setHeader('Connection', 'close')
if (req.url === '/') {
res.setHeader('Location', `http://${server3}/`)
} else {
res.setHeader('Location', `http://${server3}/end`)
}
res.end('')
})
const server3 = await startServer(t, (req, res) => {
res.statusCode = 301
res.setHeader('Connection', 'close')
if (req.url === '/') {
res.setHeader('Location', `http://${server2}/end`)
} else {
res.setHeader('Location', `http://${server1}/end`)
}
res.end('')
})
return [server1, server2, server3]
}
async function startRedirectingWithAuthorization (t, authorization) {
const server1 = await startServer(t, (req, res) => {
if (req.headers.authorization !== authorization) {
res.statusCode = 403
res.setHeader('Connection', 'close')
res.end('')
return
}
res.statusCode = 301
res.setHeader('Connection', 'close')
res.setHeader('Location', `http://${server2}`)
res.end('')
})
const server2 = await startServer(t, (req, res) => {
res.end(req.headers.authorization || '')
})
return [server1, server2]
}
async function startRedirectingWithRelativePath (t) {
const server = await startServer(t, (req, res) => {
res.setHeader('Connection', 'close')
if (req.url === '/') {
res.statusCode = 301
res.setHeader('Location', '/absolute/a')
res.end('')
} else if (req.url === '/absolute/a') {
res.statusCode = 301
res.setHeader('Location', 'b')
res.end('')
} else {
res.statusCode = 200
res.end(req.url)
}
})
return server
}
module.exports = {
startServer,
startRedirectingServer,
startRedirectingWithBodyServer,
startRedirectingWithoutLocationServer,
startRedirectingChainServers,
startRedirectingWithAuthorization,
startRedirectingWithRelativePath
}