830 lines
27 KiB
JavaScript
830 lines
27 KiB
JavaScript
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//////////////////////////////////////////
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// Needle -- HTTP Client for Node.js
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// Written by Tomás Pollak <tomas@forkhq.com>
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// (c) 2012-2020 - Fork Ltd.
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// MIT Licensed
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//////////////////////////////////////////
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var fs = require('fs'),
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http = require('http'),
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https = require('https'),
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url = require('url'),
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stream = require('stream'),
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debug = require('debug')('needle'),
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stringify = require('./querystring').build,
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multipart = require('./multipart'),
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auth = require('./auth'),
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cookies = require('./cookies'),
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parsers = require('./parsers'),
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decoder = require('./decoder');
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//////////////////////////////////////////
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// variabilia
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var version = require('../package.json').version;
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var user_agent = 'Needle/' + version;
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user_agent += ' (Node.js ' + process.version + '; ' + process.platform + ' ' + process.arch + ')';
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var tls_options = 'agent pfx key passphrase cert ca ciphers rejectUnauthorized secureProtocol checkServerIdentity family';
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// older versions of node (< 0.11.4) prevent the runtime from exiting
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// because of connections in keep-alive state. so if this is the case
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// we'll default new requests to set a Connection: close header.
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var close_by_default = !http.Agent || http.Agent.defaultMaxSockets != Infinity;
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// see if we have Object.assign. otherwise fall back to util._extend
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var extend = Object.assign ? Object.assign : require('util')._extend;
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// these are the status codes that Needle interprets as redirects.
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var redirect_codes = [301, 302, 303, 307, 308];
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//////////////////////////////////////////
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// decompressors for gzip/deflate/br bodies
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function bind_opts(fn, options) {
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return fn.bind(null, options);
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}
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var decompressors = {};
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try {
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var zlib = require('zlib');
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// Enable Z_SYNC_FLUSH to avoid Z_BUF_ERROR errors (Node PR #2595)
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var zlib_options = {
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flush: zlib.Z_SYNC_FLUSH,
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finishFlush: zlib.Z_SYNC_FLUSH
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};
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var br_options = {
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flush: zlib.BROTLI_OPERATION_FLUSH,
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finishFlush: zlib.BROTLI_OPERATION_FLUSH
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};
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decompressors['x-deflate'] = bind_opts(zlib.Inflate, zlib_options);
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decompressors['deflate'] = bind_opts(zlib.Inflate, zlib_options);
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decompressors['x-gzip'] = bind_opts(zlib.Gunzip, zlib_options);
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decompressors['gzip'] = bind_opts(zlib.Gunzip, zlib_options);
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if (typeof zlib.BrotliDecompress === 'function') {
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decompressors['br'] = bind_opts(zlib.BrotliDecompress, br_options);
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}
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} catch(e) { /* zlib not available */ }
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//////////////////////////////////////////
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// options and aliases
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var defaults = {
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// data
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boundary : '--------------------NODENEEDLEHTTPCLIENT',
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encoding : 'utf8',
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parse_response : 'all', // same as true. valid options: 'json', 'xml' or false/null
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proxy : null,
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// headers
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headers : {},
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accept : '*/*',
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user_agent : user_agent,
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// numbers
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open_timeout : 10000,
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response_timeout : 0,
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read_timeout : 0,
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follow_max : 0,
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stream_length : -1,
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// booleans
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compressed : false,
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decode_response : true,
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parse_cookies : true,
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follow_set_cookies : false,
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follow_set_referer : false,
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follow_keep_method : false,
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follow_if_same_host : false,
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follow_if_same_protocol : false,
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follow_if_same_location : false
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}
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var aliased = {
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options: {
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decode : 'decode_response',
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parse : 'parse_response',
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timeout : 'open_timeout',
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follow : 'follow_max'
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},
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inverted: {}
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}
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// only once, invert aliased keys so we can get passed options.
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Object.keys(aliased.options).map(function(k) {
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var value = aliased.options[k];
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aliased.inverted[value] = k;
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});
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//////////////////////////////////////////
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// helpers
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function keys_by_type(type) {
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return Object.keys(defaults).map(function(el) {
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if (defaults[el] !== null && defaults[el].constructor == type)
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return el;
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}).filter(function(el) { return el })
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}
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function parse_content_type(header) {
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if (!header || header === '') return {};
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var found, charset = 'utf8', arr = header.split(';');
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if (arr.length > 1 && (found = arr[1].match(/charset=(.+)/)))
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charset = found[1];
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return { type: arr[0], charset: charset };
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}
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function is_stream(obj) {
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return typeof obj.pipe === 'function';
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}
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function get_stream_length(stream, given_length, cb) {
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if (given_length > 0)
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return cb(given_length);
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if (stream.end !== void 0 && stream.end !== Infinity && stream.start !== void 0)
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return cb((stream.end + 1) - (stream.start || 0));
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fs.stat(stream.path, function(err, stat) {
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cb(stat ? stat.size - (stream.start || 0) : null);
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});
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}
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//////////////////////////////////////////
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// the main act
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function Needle(method, uri, data, options, callback) {
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// if (!(this instanceof Needle)) {
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// return new Needle(method, uri, data, options, callback);
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// }
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if (typeof uri !== 'string')
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throw new TypeError('URL must be a string, not ' + uri);
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this.method = method;
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this.uri = uri;
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this.data = data;
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if (typeof options == 'function') {
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this.callback = options;
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this.options = {};
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} else {
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this.callback = callback;
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this.options = options;
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}
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}
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Needle.prototype.setup = function(uri, options) {
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function get_option(key, fallback) {
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// if original is in options, return that value
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if (typeof options[key] != 'undefined') return options[key];
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// otherwise, return value from alias or fallback/undefined
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return typeof options[aliased.inverted[key]] != 'undefined'
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? options[aliased.inverted[key]] : fallback;
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}
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function check_value(expected, key) {
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var value = get_option(key),
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type = typeof value;
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if (type != 'undefined' && type != expected)
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throw new TypeError(type + ' received for ' + key + ', but expected a ' + expected);
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return (type == expected) ? value : defaults[key];
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}
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//////////////////////////////////////////////////
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// the basics
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var config = {
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http_opts : {
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localAddress: get_option('localAddress', undefined)
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}, // passed later to http.request() directly
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headers : {},
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output : options.output,
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proxy : get_option('proxy', defaults.proxy),
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parser : get_option('parse_response', defaults.parse_response),
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encoding : options.encoding || (options.multipart ? 'binary' : defaults.encoding)
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}
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keys_by_type(Boolean).forEach(function(key) {
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config[key] = check_value('boolean', key);
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})
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keys_by_type(Number).forEach(function(key) {
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config[key] = check_value('number', key);
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})
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// populate http_opts with given TLS options
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tls_options.split(' ').forEach(function(key) {
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if (typeof options[key] != 'undefined') {
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config.http_opts[key] = options[key];
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if (typeof options.agent == 'undefined')
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config.http_opts.agent = false; // otherwise tls options are skipped
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}
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});
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//////////////////////////////////////////////////
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// headers, cookies
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for (var key in defaults.headers)
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config.headers[key] = defaults.headers[key];
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config.headers['accept'] = options.accept || defaults.accept;
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config.headers['user-agent'] = options.user_agent || defaults.user_agent;
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if (options.content_type)
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config.headers['content-type'] = options.content_type;
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// set connection header if opts.connection was passed, or if node < 0.11.4 (close)
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if (options.connection || close_by_default)
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config.headers['connection'] = options.connection || 'close';
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if ((options.compressed || defaults.compressed) && typeof zlib != 'undefined')
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config.headers['accept-encoding'] = decompressors['br'] ? 'gzip, deflate, br' : 'gzip, deflate';
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if (options.cookies)
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config.headers['cookie'] = cookies.write(options.cookies);
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//////////////////////////////////////////////////
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// basic/digest auth
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if (uri.match(/[^\/]@/)) { // url contains user:pass@host, so parse it.
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var parts = (url.parse(uri).auth || '').split(':');
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options.username = parts[0];
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options.password = parts[1];
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}
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if (options.username) {
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if (options.auth && (options.auth == 'auto' || options.auth == 'digest')) {
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config.credentials = [options.username, options.password];
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} else {
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config.headers['authorization'] = auth.basic(options.username, options.password);
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}
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}
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// if proxy is present, set auth header from either url or proxy_user option.
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if (config.proxy) {
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if (config.proxy.indexOf('http') === -1)
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config.proxy = 'http://' + config.proxy;
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if (config.proxy.indexOf('@') !== -1) {
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var proxy = (url.parse(config.proxy).auth || '').split(':');
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options.proxy_user = proxy[0];
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options.proxy_pass = proxy[1];
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}
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if (options.proxy_user)
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config.headers['proxy-authorization'] = auth.basic(options.proxy_user, options.proxy_pass);
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}
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// now that all our headers are set, overwrite them if instructed.
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for (var h in options.headers)
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config.headers[h.toLowerCase()] = options.headers[h];
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config.uri_modifier = get_option('uri_modifier', null);
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return config;
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}
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Needle.prototype.start = function() {
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var out = new stream.PassThrough({ objectMode: false }),
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uri = this.uri,
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data = this.data,
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method = this.method,
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callback = (typeof this.options == 'function') ? this.options : this.callback,
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options = this.options || {};
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// if no 'http' is found on URL, prepend it.
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if (uri.indexOf('http') === -1)
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uri = uri.replace(/^(\/\/)?/, 'http://');
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var self = this, body, waiting = false, config = this.setup(uri, options);
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// unless options.json was set to false, assume boss also wants JSON if content-type matches.
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var json = options.json || (options.json !== false && config.headers['content-type'] == 'application/json');
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if (data) {
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if (options.multipart) { // boss says we do multipart. so we do it.
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var boundary = options.boundary || defaults.boundary;
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waiting = true;
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multipart.build(data, boundary, function(err, parts) {
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if (err) throw(err);
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config.headers['content-type'] = 'multipart/form-data; boundary=' + boundary;
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next(parts);
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});
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} else if (is_stream(data)) {
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if (method.toUpperCase() == 'GET')
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throw new Error('Refusing to pipe() a stream via GET. Did you mean .post?');
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if (config.stream_length > 0 || (config.stream_length === 0 && data.path)) {
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// ok, let's get the stream's length and set it as the content-length header.
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// this prevents some servers from cutting us off before all the data is sent.
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waiting = true;
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get_stream_length(data, config.stream_length, function(length) {
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data.length = length;
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next(data);
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})
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} else {
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// if the boss doesn't want us to get the stream's length, or if it doesn't
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// have a file descriptor for that purpose, then just head on.
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body = data;
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}
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} else if (Buffer.isBuffer(data)) {
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body = data; // use the raw buffer as request body.
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} else if (method.toUpperCase() == 'GET' && !json) {
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// append the data to the URI as a querystring.
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uri = uri.replace(/\?.*|$/, '?' + stringify(data));
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} else { // string or object data, no multipart.
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// if string, leave it as it is, otherwise, stringify.
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body = (typeof(data) === 'string') ? data
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: json ? JSON.stringify(data) : stringify(data);
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// ensure we have a buffer so bytecount is correct.
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body = Buffer.from(body, config.encoding);
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}
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}
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function next(body) {
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if (body) {
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if (body.length) config.headers['content-length'] = body.length;
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// if no content-type was passed, determine if json or not.
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if (!config.headers['content-type']) {
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config.headers['content-type'] = json
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? 'application/json; charset=utf-8'
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|
|
: 'application/x-www-form-urlencoded'; // no charset says W3 spec.
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// unless a specific accept header was set, assume json: true wants JSON back.
|
||
|
|
if (options.json && (!options.accept && !(options.headers || {}).accept))
|
||
|
|
config.headers['accept'] = 'application/json';
|
||
|
|
|
||
|
|
self.send_request(1, method, uri, config, body, out, callback);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!waiting) next(body);
|
||
|
|
return out;
|
||
|
|
}
|
||
|
|
|
||
|
|
Needle.prototype.get_request_opts = function(method, uri, config) {
|
||
|
|
var opts = config.http_opts,
|
||
|
|
proxy = config.proxy,
|
||
|
|
remote = proxy ? url.parse(proxy) : url.parse(uri);
|
||
|
|
|
||
|
|
opts.protocol = remote.protocol;
|
||
|
|
opts.host = remote.hostname;
|
||
|
|
opts.port = remote.port || (remote.protocol == 'https:' ? 443 : 80);
|
||
|
|
opts.path = proxy ? uri : remote.pathname + (remote.search || '');
|
||
|
|
opts.method = method;
|
||
|
|
opts.headers = config.headers;
|
||
|
|
|
||
|
|
if (!opts.headers['host']) {
|
||
|
|
// if using proxy, make sure the host header shows the final destination
|
||
|
|
var target = proxy ? url.parse(uri) : remote;
|
||
|
|
opts.headers['host'] = target.hostname;
|
||
|
|
|
||
|
|
// and if a non standard port was passed, append it to the port header
|
||
|
|
if (target.port && [80, 443].indexOf(target.port) === -1) {
|
||
|
|
opts.headers['host'] += ':' + target.port;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return opts;
|
||
|
|
}
|
||
|
|
|
||
|
|
Needle.prototype.should_follow = function(location, config, original) {
|
||
|
|
if (!location) return false;
|
||
|
|
|
||
|
|
// returns true if location contains matching property (host or protocol)
|
||
|
|
function matches(property) {
|
||
|
|
var property = original[property];
|
||
|
|
return location.indexOf(property) !== -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// first, check whether the requested location is actually different from the original
|
||
|
|
if (!config.follow_if_same_location && location === original)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
if (config.follow_if_same_host && !matches('host'))
|
||
|
|
return false; // host does not match, so not following
|
||
|
|
|
||
|
|
if (config.follow_if_same_protocol && !matches('protocol'))
|
||
|
|
return false; // procotol does not match, so not following
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
Needle.prototype.send_request = function(count, method, uri, config, post_data, out, callback) {
|
||
|
|
|
||
|
|
if (typeof config.uri_modifier === 'function') {
|
||
|
|
var modified_uri = config.uri_modifier(uri);
|
||
|
|
debug('Modifying request URI', uri + ' => ' + modified_uri);
|
||
|
|
uri = modified_uri;
|
||
|
|
}
|
||
|
|
|
||
|
|
var timer,
|
||
|
|
returned = 0,
|
||
|
|
self = this,
|
||
|
|
request_opts = this.get_request_opts(method, uri, config),
|
||
|
|
protocol = request_opts.protocol == 'https:' ? https : http;
|
||
|
|
|
||
|
|
function done(err, resp) {
|
||
|
|
if (returned++ > 0)
|
||
|
|
return debug('Already finished, stopping here.');
|
||
|
|
|
||
|
|
if (timer) clearTimeout(timer);
|
||
|
|
request.removeListener('error', had_error);
|
||
|
|
|
||
|
|
if (callback)
|
||
|
|
return callback(err, resp, resp ? resp.body : undefined);
|
||
|
|
|
||
|
|
// NOTE: this event used to be called 'end', but the behaviour was confusing
|
||
|
|
// when errors ocurred, because the stream would still emit an 'end' event.
|
||
|
|
out.emit('done', err);
|
||
|
|
}
|
||
|
|
|
||
|
|
function had_error(err) {
|
||
|
|
debug('Request error', err);
|
||
|
|
out.emit('err', err);
|
||
|
|
done(err || new Error('Unknown error when making request.'));
|
||
|
|
}
|
||
|
|
|
||
|
|
function set_timeout(type, milisecs) {
|
||
|
|
if (timer) clearTimeout(timer);
|
||
|
|
if (milisecs <= 0) return;
|
||
|
|
|
||
|
|
timer = setTimeout(function() {
|
||
|
|
out.emit('timeout', type);
|
||
|
|
request.abort();
|
||
|
|
// also invoke done() to terminate job on read_timeout
|
||
|
|
if (type == 'read') done(new Error(type + ' timeout'));
|
||
|
|
}, milisecs);
|
||
|
|
}
|
||
|
|
|
||
|
|
// handle errors on the underlying socket, that may be closed while writing
|
||
|
|
// for an example case, see test/long_string_spec.js. we make sure this
|
||
|
|
// scenario ocurred by verifying the socket's writable & destroyed states.
|
||
|
|
function on_socket_end() {
|
||
|
|
if (returned && !this.writable && this.destroyed === false) {
|
||
|
|
this.destroy();
|
||
|
|
had_error(new Error('Remote end closed socket abruptly.'))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
debug('Making request #' + count, request_opts);
|
||
|
|
var request = protocol.request(request_opts, function(resp) {
|
||
|
|
|
||
|
|
var headers = resp.headers;
|
||
|
|
debug('Got response', resp.statusCode, headers);
|
||
|
|
out.emit('response', resp);
|
||
|
|
|
||
|
|
set_timeout('read', config.read_timeout);
|
||
|
|
|
||
|
|
// if we got cookies, parse them unless we were instructed not to. make sure to include any
|
||
|
|
// cookies that might have been set on previous redirects.
|
||
|
|
if (config.parse_cookies && (headers['set-cookie'] || config.previous_resp_cookies)) {
|
||
|
|
resp.cookies = extend(config.previous_resp_cookies || {}, cookies.read(headers['set-cookie']));
|
||
|
|
debug('Got cookies', resp.cookies);
|
||
|
|
}
|
||
|
|
|
||
|
|
// if redirect code is found, determine if we should follow it according to the given options.
|
||
|
|
if (redirect_codes.indexOf(resp.statusCode) !== -1 && self.should_follow(headers.location, config, uri)) {
|
||
|
|
// clear timer before following redirects to prevent unexpected setTimeout consequence
|
||
|
|
clearTimeout(timer);
|
||
|
|
|
||
|
|
if (count <= config.follow_max) {
|
||
|
|
out.emit('redirect', headers.location);
|
||
|
|
|
||
|
|
// unless 'follow_keep_method' is true, rewrite the request to GET before continuing.
|
||
|
|
if (!config.follow_keep_method) {
|
||
|
|
method = 'GET';
|
||
|
|
post_data = null;
|
||
|
|
delete config.headers['content-length']; // in case the original was a multipart POST request.
|
||
|
|
}
|
||
|
|
|
||
|
|
// if follow_set_cookies is true, insert cookies in the next request's headers.
|
||
|
|
// we set both the original request cookies plus any response cookies we might have received.
|
||
|
|
if (config.follow_set_cookies) {
|
||
|
|
var request_cookies = cookies.read(config.headers['cookie']);
|
||
|
|
config.previous_resp_cookies = resp.cookies;
|
||
|
|
if (Object.keys(request_cookies).length || Object.keys(resp.cookies || {}).length) {
|
||
|
|
config.headers['cookie'] = cookies.write(extend(request_cookies, resp.cookies));
|
||
|
|
}
|
||
|
|
} else if (config.headers['cookie']) {
|
||
|
|
debug('Clearing original request cookie', config.headers['cookie']);
|
||
|
|
delete config.headers['cookie'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (config.follow_set_referer)
|
||
|
|
config.headers['referer'] = encodeURI(uri); // the original, not the destination URL.
|
||
|
|
|
||
|
|
config.headers['host'] = null; // clear previous Host header to avoid conflicts.
|
||
|
|
|
||
|
|
debug('Redirecting to ' + url.resolve(uri, headers.location));
|
||
|
|
return self.send_request(++count, method, url.resolve(uri, headers.location), config, post_data, out, callback);
|
||
|
|
} else if (config.follow_max > 0) {
|
||
|
|
return done(new Error('Max redirects reached. Possible loop in: ' + headers.location));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// if auth is requested and credentials were not passed, resend request, provided we have user/pass.
|
||
|
|
if (resp.statusCode == 401 && headers['www-authenticate'] && config.credentials) {
|
||
|
|
if (!config.headers['authorization']) { // only if authentication hasn't been sent
|
||
|
|
var auth_header = auth.header(headers['www-authenticate'], config.credentials, request_opts);
|
||
|
|
|
||
|
|
if (auth_header) {
|
||
|
|
config.headers['authorization'] = auth_header;
|
||
|
|
return self.send_request(count, method, uri, config, post_data, out, callback);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// ok, so we got a valid (non-redirect & authorized) response. let's notify the stream guys.
|
||
|
|
out.emit('header', resp.statusCode, headers);
|
||
|
|
out.emit('headers', headers);
|
||
|
|
|
||
|
|
var pipeline = [],
|
||
|
|
mime = parse_content_type(headers['content-type']),
|
||
|
|
text_response = mime.type && mime.type.indexOf('text/') != -1;
|
||
|
|
|
||
|
|
// To start, if our body is compressed and we're able to inflate it, do it.
|
||
|
|
if (headers['content-encoding'] && decompressors[headers['content-encoding']]) {
|
||
|
|
|
||
|
|
var decompressor = decompressors[headers['content-encoding']]();
|
||
|
|
|
||
|
|
// make sure we catch errors triggered by the decompressor.
|
||
|
|
decompressor.on('error', had_error);
|
||
|
|
pipeline.push(decompressor);
|
||
|
|
}
|
||
|
|
|
||
|
|
// If parse is enabled and we have a parser for it, then go for it.
|
||
|
|
if (config.parser && parsers[mime.type]) {
|
||
|
|
|
||
|
|
// If a specific parser was requested, make sure we don't parse other types.
|
||
|
|
var parser_name = config.parser.toString().toLowerCase();
|
||
|
|
if (['xml', 'json'].indexOf(parser_name) == -1 || parsers[mime.type].name == parser_name) {
|
||
|
|
|
||
|
|
// OK, so either we're parsing all content types or the one requested matches.
|
||
|
|
out.parser = parsers[mime.type].name;
|
||
|
|
pipeline.push(parsers[mime.type].fn());
|
||
|
|
|
||
|
|
// Set objectMode on out stream to improve performance.
|
||
|
|
out._writableState.objectMode = true;
|
||
|
|
out._readableState.objectMode = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// If we're not parsing, and unless decoding was disabled, we'll try
|
||
|
|
// decoding non UTF-8 bodies to UTF-8, using the iconv-lite library.
|
||
|
|
} else if (text_response && config.decode_response
|
||
|
|
&& mime.charset) {
|
||
|
|
pipeline.push(decoder(mime.charset));
|
||
|
|
}
|
||
|
|
// And `out` is the stream we finally push the decoded/parsed output to.
|
||
|
|
pipeline.push(out);
|
||
|
|
|
||
|
|
// Now, release the kraken!
|
||
|
|
var tmp = resp;
|
||
|
|
while (pipeline.length) {
|
||
|
|
tmp = tmp.pipe(pipeline.shift());
|
||
|
|
}
|
||
|
|
|
||
|
|
// If the user has requested and output file, pipe the output stream to it.
|
||
|
|
// In stream mode, we will still get the response stream to play with.
|
||
|
|
if (config.output && resp.statusCode == 200) {
|
||
|
|
|
||
|
|
// for some reason, simply piping resp to the writable stream doesn't
|
||
|
|
// work all the time (stream gets cut in the middle with no warning).
|
||
|
|
// so we'll manually need to do the readable/write(chunk) trick.
|
||
|
|
var file = fs.createWriteStream(config.output);
|
||
|
|
file.on('error', had_error);
|
||
|
|
|
||
|
|
out.on('end', function() {
|
||
|
|
if (file.writable) file.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
file.on('close', function() {
|
||
|
|
delete out.file;
|
||
|
|
})
|
||
|
|
|
||
|
|
out.on('readable', function() {
|
||
|
|
var chunk;
|
||
|
|
while ((chunk = this.read()) !== null) {
|
||
|
|
if (file.writable) file.write(chunk);
|
||
|
|
|
||
|
|
// if callback was requested, also push it to resp.body
|
||
|
|
if (resp.body) resp.body.push(chunk);
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
out.file = file;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Only aggregate the full body if a callback was requested.
|
||
|
|
if (callback) {
|
||
|
|
resp.raw = [];
|
||
|
|
resp.body = [];
|
||
|
|
resp.bytes = 0;
|
||
|
|
|
||
|
|
// Gather and count the amount of (raw) bytes using a PassThrough stream.
|
||
|
|
var clean_pipe = new stream.PassThrough();
|
||
|
|
resp.pipe(clean_pipe);
|
||
|
|
|
||
|
|
clean_pipe.on('readable', function() {
|
||
|
|
var chunk;
|
||
|
|
while ((chunk = this.read()) != null) {
|
||
|
|
resp.bytes += chunk.length;
|
||
|
|
resp.raw.push(chunk);
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
// Listen on the 'readable' event to aggregate the chunks, but only if
|
||
|
|
// file output wasn't requested. Otherwise we'd have two stream readers.
|
||
|
|
if (!config.output || resp.statusCode != 200) {
|
||
|
|
out.on('readable', function() {
|
||
|
|
var chunk;
|
||
|
|
while ((chunk = this.read()) !== null) {
|
||
|
|
// We're either pushing buffers or objects, never strings.
|
||
|
|
if (typeof chunk == 'string') chunk = Buffer.from(chunk);
|
||
|
|
|
||
|
|
// Push all chunks to resp.body. We'll bind them in resp.end().
|
||
|
|
resp.body.push(chunk);
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// And set the .body property once all data is in.
|
||
|
|
out.on('end', function() {
|
||
|
|
if (resp.body) { // callback mode
|
||
|
|
|
||
|
|
// we want to be able to access to the raw data later, so keep a reference.
|
||
|
|
resp.raw = Buffer.concat(resp.raw);
|
||
|
|
|
||
|
|
// if parse was successful, we should have an array with one object
|
||
|
|
if (resp.body[0] !== undefined && !Buffer.isBuffer(resp.body[0])) {
|
||
|
|
|
||
|
|
// that's our body right there.
|
||
|
|
resp.body = resp.body[0];
|
||
|
|
|
||
|
|
// set the parser property on our response. we may want to check.
|
||
|
|
if (out.parser) resp.parser = out.parser;
|
||
|
|
|
||
|
|
} else { // we got one or several buffers. string or binary.
|
||
|
|
resp.body = Buffer.concat(resp.body);
|
||
|
|
|
||
|
|
// if we're here and parsed is true, it means we tried to but it didn't work.
|
||
|
|
// so given that we got a text response, let's stringify it.
|
||
|
|
if (text_response || out.parser) {
|
||
|
|
resp.body = resp.body.toString();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// if an output file is being written to, make sure the callback
|
||
|
|
// is triggered after all data has been written to it.
|
||
|
|
if (out.file) {
|
||
|
|
out.file.on('close', function() {
|
||
|
|
done(null, resp, resp.body);
|
||
|
|
})
|
||
|
|
} else { // elvis has left the building.
|
||
|
|
done(null, resp, resp.body);
|
||
|
|
}
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
}); // end request call
|
||
|
|
|
||
|
|
// unless open_timeout was disabled, set a timeout to abort the request.
|
||
|
|
set_timeout('open', config.open_timeout);
|
||
|
|
|
||
|
|
// handle errors on the request object. things might get bumpy.
|
||
|
|
request.on('error', had_error);
|
||
|
|
|
||
|
|
// make sure timer is cleared if request is aborted (issue #257)
|
||
|
|
request.once('abort', function() {
|
||
|
|
if (timer) clearTimeout(timer);
|
||
|
|
})
|
||
|
|
|
||
|
|
// handle socket 'end' event to ensure we don't get delayed EPIPE errors.
|
||
|
|
request.once('socket', function(socket) {
|
||
|
|
if (socket.connecting) {
|
||
|
|
socket.once('connect', function() {
|
||
|
|
set_timeout('response', config.response_timeout);
|
||
|
|
})
|
||
|
|
} else {
|
||
|
|
set_timeout('response', config.response_timeout);
|
||
|
|
}
|
||
|
|
|
||
|
|
// console.log(socket);
|
||
|
|
if (!socket.on_socket_end) {
|
||
|
|
socket.on_socket_end = on_socket_end;
|
||
|
|
socket.once('end', function() { process.nextTick(on_socket_end.bind(socket)) });
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
if (post_data) {
|
||
|
|
if (is_stream(post_data)) {
|
||
|
|
post_data.pipe(request);
|
||
|
|
} else {
|
||
|
|
request.write(post_data, config.encoding);
|
||
|
|
request.end();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
request.end();
|
||
|
|
}
|
||
|
|
|
||
|
|
out.request = request;
|
||
|
|
return out;
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
// exports
|
||
|
|
|
||
|
|
if (typeof Promise !== 'undefined') {
|
||
|
|
module.exports = function() {
|
||
|
|
var verb, args = [].slice.call(arguments);
|
||
|
|
|
||
|
|
if (args[0].match(/\.|\//)) // first argument looks like a URL
|
||
|
|
verb = (args.length > 2) ? 'post' : 'get';
|
||
|
|
else
|
||
|
|
verb = args.shift();
|
||
|
|
|
||
|
|
if (verb.match(/get|head/) && args.length == 2)
|
||
|
|
args.splice(1, 0, null); // assume no data if head/get with two args (url, options)
|
||
|
|
|
||
|
|
return new Promise(function(resolve, reject) {
|
||
|
|
module.exports.request(verb, args[0], args[1], args[2], function(err, resp) {
|
||
|
|
return err ? reject(err) : resolve(resp);
|
||
|
|
});
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports.version = version;
|
||
|
|
|
||
|
|
module.exports.defaults = function(obj) {
|
||
|
|
for (var key in obj) {
|
||
|
|
var target_key = aliased.options[key] || key;
|
||
|
|
|
||
|
|
if (defaults.hasOwnProperty(target_key) && typeof obj[key] != 'undefined') {
|
||
|
|
if (target_key != 'parse_response' && target_key != 'proxy') {
|
||
|
|
// ensure type matches the original, except for proxy/parse_response that can be null/bool or string
|
||
|
|
var valid_type = defaults[target_key].constructor.name;
|
||
|
|
|
||
|
|
if (obj[key].constructor.name != valid_type)
|
||
|
|
throw new TypeError('Invalid type for ' + key + ', should be ' + valid_type);
|
||
|
|
}
|
||
|
|
defaults[target_key] = obj[key];
|
||
|
|
} else {
|
||
|
|
throw new Error('Invalid property for defaults:' + target_key);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return defaults;
|
||
|
|
}
|
||
|
|
|
||
|
|
'head get'.split(' ').forEach(function(method) {
|
||
|
|
module.exports[method] = function(uri, options, callback) {
|
||
|
|
return new Needle(method, uri, null, options, callback).start();
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
'post put patch delete'.split(' ').forEach(function(method) {
|
||
|
|
module.exports[method] = function(uri, data, options, callback) {
|
||
|
|
return new Needle(method, uri, data, options, callback).start();
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
module.exports.request = function(method, uri, data, opts, callback) {
|
||
|
|
return new Needle(method, uri, data, opts, callback).start();
|
||
|
|
};
|