87 lines
2.4 KiB
JavaScript
87 lines
2.4 KiB
JavaScript
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'use strict'
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const dns = require('./dns')
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const normalizeOptions = (opts) => {
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const family = parseInt(opts.family ?? '0', 10)
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const keepAlive = opts.keepAlive ?? true
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const normalized = {
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// nodejs http agent options. these are all the defaults
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// but kept here to increase the likelihood of cache hits
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// https://nodejs.org/api/http.html#new-agentoptions
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keepAliveMsecs: keepAlive ? 1000 : undefined,
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maxSockets: opts.maxSockets ?? 15,
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maxTotalSockets: Infinity,
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maxFreeSockets: keepAlive ? 256 : undefined,
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scheduling: 'fifo',
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// then spread the rest of the options
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...opts,
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// we already set these to their defaults that we want
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family,
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keepAlive,
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// our custom timeout options
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timeouts: {
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// the standard timeout option is mapped to our idle timeout
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// and then deleted below
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idle: opts.timeout ?? 0,
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connection: 0,
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response: 0,
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transfer: 0,
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...opts.timeouts,
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},
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// get the dns options that go at the top level of socket connection
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...dns.getOptions({ family, ...opts.dns }),
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}
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// remove timeout since we already used it to set our own idle timeout
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delete normalized.timeout
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return normalized
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}
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const createKey = (obj) => {
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let key = ''
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const sorted = Object.entries(obj).sort((a, b) => a[0] - b[0])
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for (let [k, v] of sorted) {
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if (v == null) {
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v = 'null'
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} else if (v instanceof URL) {
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v = v.toString()
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} else if (typeof v === 'object') {
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v = createKey(v)
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}
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key += `${k}:${v}:`
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}
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return key
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}
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const cacheOptions = ({ secureEndpoint, ...options }) => createKey({
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secureEndpoint: !!secureEndpoint,
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// socket connect options
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family: options.family,
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hints: options.hints,
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localAddress: options.localAddress,
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// tls specific connect options
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strictSsl: secureEndpoint ? !!options.rejectUnauthorized : false,
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ca: secureEndpoint ? options.ca : null,
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cert: secureEndpoint ? options.cert : null,
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key: secureEndpoint ? options.key : null,
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// http agent options
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keepAlive: options.keepAlive,
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keepAliveMsecs: options.keepAliveMsecs,
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maxSockets: options.maxSockets,
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maxTotalSockets: options.maxTotalSockets,
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maxFreeSockets: options.maxFreeSockets,
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scheduling: options.scheduling,
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// timeout options
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timeouts: options.timeouts,
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// proxy
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proxy: options.proxy,
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})
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module.exports = {
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normalizeOptions,
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cacheOptions,
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}
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