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80 lines
2.2 KiB
80 lines
2.2 KiB
5 years ago
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module.exports = simpleGet
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var extend = require('xtend')
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var http = require('http')
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var https = require('https')
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var once = require('once')
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var unzipResponse = require('unzip-response') // excluded from browser build
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var url = require('url')
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function simpleGet (opts, cb) {
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opts = typeof opts === 'string' ? { url: opts } : extend(opts)
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cb = once(cb)
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if (opts.url) parseOptsUrl(opts)
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if (opts.headers == null) opts.headers = {}
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if (opts.maxRedirects == null) opts.maxRedirects = 10
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var body = opts.body
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opts.body = undefined
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if (body && !opts.method) opts.method = 'POST'
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// Request gzip/deflate
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var customAcceptEncoding = Object.keys(opts.headers).some(function (h) {
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return h.toLowerCase() === 'accept-encoding'
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})
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if (!customAcceptEncoding) opts.headers['accept-encoding'] = 'gzip, deflate'
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// Support http: and https: urls
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var protocol = opts.protocol === 'https:' ? https : http
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var req = protocol.request(opts, function (res) {
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// Follow 3xx redirects
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if (res.statusCode >= 300 && res.statusCode < 400 && 'location' in res.headers) {
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opts.url = res.headers.location
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parseOptsUrl(opts)
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res.resume() // Discard response
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opts.maxRedirects -= 1
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if (opts.maxRedirects > 0) simpleGet(opts, cb)
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else cb(new Error('too many redirects'))
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return
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}
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cb(null, typeof unzipResponse === 'function' ? unzipResponse(res) : res)
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})
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req.on('error', cb)
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req.end(body)
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return req
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}
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module.exports.concat = function (opts, cb) {
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return simpleGet(opts, function (err, res) {
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if (err) return cb(err)
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var chunks = []
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res.on('data', function (chunk) {
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chunks.push(chunk)
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})
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res.on('end', function () {
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cb(null, Buffer.concat(chunks), res)
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})
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})
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}
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;['get', 'post', 'put', 'patch', 'head', 'delete'].forEach(function (method) {
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module.exports[method] = function (opts, cb) {
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if (typeof opts === 'string') opts = { url: opts }
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opts.method = method.toUpperCase()
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return simpleGet(opts, cb)
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}
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})
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function parseOptsUrl (opts) {
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var loc = url.parse(opts.url)
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if (loc.hostname) opts.hostname = loc.hostname
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if (loc.port) opts.port = loc.port
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if (loc.protocol) opts.protocol = loc.protocol
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opts.path = loc.path
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delete opts.url
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}
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