Iain Sproat
78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
'use strict'
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const dns = require('dns')
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const isIpPrivate = require('private-ip')
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const fetch = require('node-fetch')
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async function isLocalNetworkUrl(url) {
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const parsedUrl = new URL(url)
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const hostname = parsedUrl.hostname
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const ip = await new Promise((resolve, reject) => {
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dns.lookup(hostname, (err, addr) => {
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if (err) {
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reject(err)
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} else {
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resolve(addr)
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}
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})
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})
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return isIpPrivate(ip)
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}
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async function makeNetworkRequest({ url, data, headersData, logger }) {
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if (process.env.ALLOW_LOCAL_NETWORK !== 'true' && (await isLocalNetworkUrl(url))) {
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return {
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success: false,
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error:
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'Local network requests are not allowed. To allow, use ALLOW_LOCAL_NETWORK=true environment variable',
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duration: 0,
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responseCode: null,
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responseBody: null
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}
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}
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const httpSuccessCodes = [200, 201, 202, 204]
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const headers = { 'Content-Type': 'application/json' }
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for (const k in headersData) headers[k] = headersData[k]
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logger.info('attempting POST request.')
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const t0 = Date.now()
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try {
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const response = await fetch(url, {
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method: 'POST',
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body: JSON.stringify(data),
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headers,
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follow: 2, // follow max 2 redirects (fetch defaults to 20)
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timeout: 10 * 1000, // timeout after 10sec (defaults to no timeout)
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size: 500 * 1000 // 500kb max response size, to accommodate various error responses (defaults to no limit)
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}).then(async (res) => ({ status: res.status, body: await res.text() }))
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logger.debug({ response }, 'Server responded.')
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const error =
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httpSuccessCodes.indexOf(response.status) === -1
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? `HTTP response code: ${response.status}`
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: ''
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const success = httpSuccessCodes.indexOf(response.status) !== -1
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return {
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success,
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error,
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duration: (Date.now() - t0) / 1000,
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responseCode: response.status,
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responseBody: response.body
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}
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} catch (e) {
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return {
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success: false,
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error: e.toString(),
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duration: (Date.now() - t0) / 1000,
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responseCode: null,
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responseBody: null
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}
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}
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}
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module.exports = { makeNetworkRequest, isLocalNetworkUrl }
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