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| 'use strict';
var debug = require('debug')('urllib');
var http = require('http');
var https = require('https');
var urlutil = require('url');
var util = require('util');
var qs = require('qs');
var querystring = require('querystring');
var zlib = require('zlib');
var ua = require('default-user-agent');
var digestAuthHeader = require('digest-header');
var util = require('util');
var ms = require('humanize-ms');
var statuses = require('statuses');
var contentTypeParser = require('content-type');
var first = require('ee-first');
var _Promise;
var _iconv;
var pkg = require('../package.json');
var USER_AGENT = exports.USER_AGENT = ua('node-urllib', pkg.version);
// change Agent.maxSockets to 1000
exports.agent = new http.Agent();
exports.agent.maxSockets = 1000;
exports.httpsAgent = new https.Agent();
exports.httpsAgent.maxSockets = 1000;
/**
* The default request timeout(in milliseconds).
* @type {Number}
* @const
*/
exports.TIMEOUT = ms('5s');
exports.TIMEOUTS = [ms('5s'), ms('5s')];
var REQUEST_ID = 0;
var MAX_VALUE = Math.pow(2, 31) - 10;
var isNode010 = /^v0\.10\.\d+$/.test(process.version);
var isNode012 = /^v0\.12\.\d+$/.test(process.version);
/**
* support data types
* will auto decode response body
* @type {Array}
*/
var TEXT_DATA_TYPES = [
'json',
'text'
];
var PROTO_RE = /^https?:\/\//i;
/**
* Handle all http request, both http and https support well.
*
* @example
*
* // GET http://httptest.cnodejs.net
* urllib.request('http://httptest.cnodejs.net/test/get', function(err, data, res) {});
* // POST http://httptest.cnodejs.net
* var args = { type: 'post', data: { foo: 'bar' } };
* urllib.request('http://httptest.cnodejs.net/test/post', args, function(err, data, res) {});
*
* @param {String|Object} url
* @param {Object} [args], optional
* - {Object} [data]: request data, will auto be query stringify.
* - {Boolean} [dataAsQueryString]: force convert `data` to query string.
* - {String|Buffer} [content]: optional, if set content, `data` will ignore.
* - {ReadStream} [stream]: read stream to sent.
* - {WriteStream} [writeStream]: writable stream to save response data.
* If you use this, callback's data should be null.
* We will just `pipe(ws, {end: true})`.
* - {consumeWriteStream} [true]: consume the writeStream, invoke the callback after writeStream close.
* - {String} [method]: optional, could be GET | POST | DELETE | PUT, default is GET
* - {String} [contentType]: optional, request data type, could be `json`, default is undefined
* - {String} [dataType]: optional, response data type, could be `text` or `json`, default is buffer
* - {Boolean} [fixJSONCtlChars]: optional, fix the control characters (U+0000 through U+001F)
* before JSON parse response. Default is `false`
* - {Object} [headers]: optional, request headers
* - {Number|Array} [timeout]: request timeout(in milliseconds), default is `exports.TIMEOUTS containing connect timeout and response timeout`
* - {Agent} [agent]: optional, http agent. Set `false` if you does not use agent.
* - {Agent} [httpsAgent]: optional, https agent. Set `false` if you does not use agent.
* - {String} [auth]: Basic authentication i.e. 'user:password' to compute an Authorization header.
* - {String} [digestAuth]: Digest authentication i.e. 'user:password' to compute an Authorization header.
* - {String|Buffer|Array} [ca]: An array of strings or Buffers of trusted certificates.
* If this is omitted several well known "root" CAs will be used, like VeriSign.
* These are used to authorize connections.
* Notes: This is necessary only if the server uses the self-signed certificate
* - {Boolean} [rejectUnauthorized]: If true, the server certificate is verified against the list of supplied CAs.
* An 'error' event is emitted if verification fails. Default: true.
* - {String|Buffer} [pfx]: A string or Buffer containing the private key,
* certificate and CA certs of the server in PFX or PKCS12 format.
* - {String|Buffer} [key]: A string or Buffer containing the private key of the client in PEM format.
* Notes: This is necessary only if using the client certificate authentication
* - {String|Buffer} [cert]: A string or Buffer containing the certificate key of the client in PEM format.
* Notes: This is necessary only if using the client certificate authentication
* - {String} [passphrase]: A string of passphrase for the private key or pfx.
* - {String} [ciphers]: A string describing the ciphers to use or exclude.
* - {String} [secureProtocol]: The SSL method to use, e.g. SSLv3_method to force SSL version 3.
* The possible values depend on your installation of OpenSSL and are defined in the constant SSL_METHODS.
* - {Boolean} [followRedirect]: Follow HTTP 3xx responses as redirects. defaults to false.
* - {Number} [maxRedirects]: The maximum number of redirects to follow, defaults to 10.
* - {Function(from, to)} [formatRedirectUrl]: Format the redirect url by your self. Default is `url.resolve(from, to)`
* - {Function(options)} [beforeRequest]: Before request hook, you can change every thing here.
* - {Boolean} [streaming]: let you get the res object when request connected, default is `false`. alias `customResponse`
* - {Boolean} [gzip]: Accept gzip response content and auto decode it, default is `false`.
* - {Boolean} [timing]: Enable timing or not, default is `false`.
* - {Function} [lookup]: Custom DNS lookup function, default is `dns.lookup`.
* Require node >= 4.0.0 and only work on `http` protocol.
* @param {Function} [callback], callback(error, data, res). If missing callback, will return a promise object.
* @return {HttpRequest} req object.
* @api public
*/
exports.request = function request(url, args, callback) {
// request(url, callback)
if (arguments.length === 2 && typeof args === 'function') {
callback = args;
args = null;
}
if (typeof callback === 'function') {
return exports.requestWithCallback(url, args, callback);
}
// Promise
if (!_Promise) {
_Promise = require('any-promise');
}
return new _Promise(function (resolve, reject) {
exports.requestWithCallback(url, args, makeCallback(resolve, reject));
});
};
// alias to curl
exports.curl = exports.request;
function makeCallback(resolve, reject) {
return function (err, data, res) {
if (err) {
return reject(err);
}
resolve({
data: data,
status: res.statusCode,
headers: res.headers,
res: res
});
};
}
// yield urllib.requestThunk(url, args)
exports.requestThunk = function requestThunk(url, args) {
return function (callback) {
exports.requestWithCallback(url, args, function (err, data, res) {
if (err) {
return callback(err);
}
callback(null, {
data: data,
status: res.statusCode,
headers: res.headers,
res: res
});
});
};
};
exports.requestWithCallback = function requestWithCallback(url, args, callback) {
// requestWithCallback(url, callback)
if (!url || (typeof url !== 'string' && typeof url !== 'object')) {
var msg = util.format('expect request url to be a string or a http request options, but got %j', url);
throw new Error(msg);
}
if (arguments.length === 2 && typeof args === 'function') {
callback = args;
args = null;
}
args = args || {};
if (REQUEST_ID >= MAX_VALUE) {
REQUEST_ID = 0;
}
var reqId = ++REQUEST_ID;
args.requestUrls = args.requestUrls || [];
var reqMeta = {
requestId: reqId,
url: url,
args: args,
ctx: args.ctx,
};
if (args.emitter) {
args.emitter.emit('request', reqMeta);
}
args.timeout = args.timeout || exports.TIMEOUTS;
args.maxRedirects = args.maxRedirects || 10;
args.streaming = args.streaming || args.customResponse;
var requestStartTime = Date.now();
var parsedUrl;
if (typeof url === 'string') {
if (!PROTO_RE.test(url)) {
// Support `request('www.server.com')`
url = 'http://' + url;
}
parsedUrl = urlutil.parse(url);
} else {
parsedUrl = url;
}
var method = (args.type || args.method || parsedUrl.method || 'GET').toUpperCase();
var port = parsedUrl.port || 80;
var httplib = http;
var agent = getAgent(args.agent, exports.agent);
var fixJSONCtlChars = !!args.fixJSONCtlChars;
if (parsedUrl.protocol === 'https:') {
httplib = https;
agent = getAgent(args.httpsAgent, exports.httpsAgent);
if (!parsedUrl.port) {
port = 443;
}
}
var options = {
host: parsedUrl.hostname || parsedUrl.host || 'localhost',
path: parsedUrl.path || '/',
method: method,
port: port,
agent: agent,
headers: args.headers || {},
// default is dns.lookup
// https://github.com/nodejs/node/blob/master/lib/net.js#L986
// custom dnslookup require node >= 4.0.0
// https://github.com/nodejs/node/blob/archived-io.js-v0.12/lib/net.js#L952
lookup: args.lookup,
};
var sslNames = [
'pfx',
'key',
'passphrase',
'cert',
'ca',
'ciphers',
'rejectUnauthorized',
'secureProtocol',
'secureOptions',
];
for (var i = 0; i < sslNames.length; i++) {
var name = sslNames[i];
if (args.hasOwnProperty(name)) {
options[name] = args[name];
}
}
// don't check ssl
if (options.rejectUnauthorized === false && !options.hasOwnProperty('secureOptions')) {
options.secureOptions = require('constants').SSL_OP_NO_TLSv1_2;
}
var auth = args.auth || parsedUrl.auth;
if (auth) {
options.auth = auth;
}
var body = args.content || args.data;
var dataAsQueryString = method === 'GET' || method === 'HEAD' || args.dataAsQueryString;
if (!args.content) {
if (body && !(typeof body === 'string' || Buffer.isBuffer(body))) {
if (dataAsQueryString) {
// read: GET, HEAD, use query string
body = args.nestedQuerystring ? qs.stringify(body) : querystring.stringify(body);
} else {
var contentType = options.headers['Content-Type'] || options.headers['content-type'];
// auto add application/x-www-form-urlencoded when using urlencode form request
if (!contentType) {
if (args.contentType === 'json') {
contentType = 'application/json';
} else {
contentType = 'application/x-www-form-urlencoded';
}
options.headers['Content-Type'] = contentType;
}
if (parseContentType(contentType).type === 'application/json') {
body = JSON.stringify(body);
} else {
// 'application/x-www-form-urlencoded'
body = args.nestedQuerystring ? qs.stringify(body) : querystring.stringify(body);
}
}
}
}
// if it's a GET or HEAD request, data should be sent as query string
if (dataAsQueryString && body) {
options.path += (parsedUrl.query ? '&' : '?') + body;
body = null;
}
var requestSize = 0;
if (body) {
var length = body.length;
if (!Buffer.isBuffer(body)) {
length = Buffer.byteLength(body);
}
requestSize = options.headers['Content-Length'] = length;
}
if (args.dataType === 'json') {
options.headers.Accept = 'application/json';
}
if (typeof args.beforeRequest === 'function') {
// you can use this hook to change every thing.
args.beforeRequest(options);
}
var connectTimer = null;
var responseTimer = null;
var __err = null;
var connected = false; // socket connected or not
var keepAliveSocket = false; // request with keepalive socket
var responseSize = 0;
var statusCode = -1;
var responseAborted = false;
var remoteAddress = '';
var remotePort = '';
var timing = null;
if (args.timing) {
timing = {
// socket assigned
queuing: 0,
// dns lookup time
dnslookup: 0,
// socket connected
connected: 0,
// request sent
requestSent: 0,
// Time to first byte (TTFB)
waiting: 0,
contentDownload: 0,
};
}
function cancelConnectTimer() {
if (connectTimer) {
clearTimeout(connectTimer);
connectTimer = null;
}
}
function cancelResponseTimer() {
if (responseTimer) {
clearTimeout(responseTimer);
responseTimer = null;
}
}
function done(err, data, res) {
cancelResponseTimer();
if (!callback) {
console.warn('[urllib:warn] [%s] [worker:%s] %s %s callback twice!!!',
Date(), process.pid, options.method, url);
// https://github.com/node-modules/urllib/pull/30
if (err) {
console.warn('[urllib:warn] [%s] [worker:%s] %s: %s\nstack: %s',
Date(), process.pid, err.name, err.message, err.stack);
}
return;
}
var cb = callback;
callback = null;
var headers = {};
if (res) {
statusCode = res.statusCode;
headers = res.headers;
}
// handle digest auth
if (statusCode === 401 && headers['www-authenticate']
&& (!args.headers || !args.headers.Authorization) && args.digestAuth) {
var authenticate = headers['www-authenticate'];
if (authenticate.indexOf('Digest ') >= 0) {
debug('Request#%d %s: got digest auth header WWW-Authenticate: %s', reqId, url, authenticate);
args.headers = args.headers || {};
args.headers.Authorization = digestAuthHeader(options.method, options.path, authenticate, args.digestAuth);
debug('Request#%d %s: auth with digest header: %s', reqId, url, args.headers.Authorization);
if (res.headers['set-cookie']) {
args.headers.Cookie = res.headers['set-cookie'].join(';');
}
return exports.requestWithCallback(url, args, cb);
}
}
var requestUseTime = Date.now() - requestStartTime;
if (timing) {
timing.contentDownload = requestUseTime;
}
debug('[%sms] done, %s bytes HTTP %s %s %s %s, keepAliveSocket: %s, timing: %j',
requestUseTime, responseSize, statusCode, options.method, options.host, options.path,
keepAliveSocket, timing);
var response = {
status: statusCode,
statusCode: statusCode,
headers: headers,
size: responseSize,
aborted: responseAborted,
rt: requestUseTime,
keepAliveSocket: keepAliveSocket,
data: data,
requestUrls: args.requestUrls,
timing: timing,
remoteAddress: remoteAddress,
remotePort: remotePort,
};
if (err) {
var agentStatus = '';
if (agent && typeof agent.getCurrentStatus === 'function') {
// add current agent status to error message for logging and debug
agentStatus = ', agent status: ' + JSON.stringify(agent.getCurrentStatus());
}
err.message += ', ' + options.method + ' ' + url + ' ' + statusCode
+ ' (connected: ' + connected + ', keepalive socket: ' + keepAliveSocket + agentStatus + ')'
+ '\nheaders: ' + JSON.stringify(headers);
err.data = data;
err.path = options.path;
err.status = statusCode;
err.headers = headers;
err.res = response;
}
cb(err, data, args.streaming ? res : response);
if (args.emitter) {
// keep to use the same reqMeta object on request event before
reqMeta.url = url;
reqMeta.socket = req && req.connection;
reqMeta.options = options;
reqMeta.size = requestSize;
args.emitter.emit('response', {
requestId: reqId,
error: err,
ctx: args.ctx,
req: reqMeta,
res: response,
});
}
}
function handleRedirect(res) {
var err = null;
if (args.followRedirect && statuses.redirect[res.statusCode]) { // handle redirect
args._followRedirectCount = (args._followRedirectCount || 0) + 1;
var location = res.headers.location;
if (!location) {
err = new Error('Got statusCode ' + res.statusCode + ' but cannot resolve next location from headers');
err.name = 'FollowRedirectError';
} else if (args._followRedirectCount > args.maxRedirects) {
err = new Error('Exceeded maxRedirects. Probably stuck in a redirect loop ' + url);
err.name = 'MaxRedirectError';
} else {
var newUrl = args.formatRedirectUrl ? args.formatRedirectUrl(url, location) : urlutil.resolve(url, location);
debug('Request#%d %s: `redirected` from %s to %s', reqId, options.path, url, newUrl);
// make sure timer stop
cancelResponseTimer();
// should clean up headers.Host on `location: http://other-domain/url`
if (args.headers && args.headers.Host && PROTO_RE.test(location)) {
args.headers.Host = null;
}
// avoid done will be execute in the future change.
var cb = callback;
callback = null;
exports.requestWithCallback(newUrl, args, cb);
return {
redirect: true,
error: null
};
}
}
return {
redirect: false,
error: err
};
}
// set user-agent
if (!options.headers['User-Agent'] && !options.headers['user-agent']) {
options.headers['User-Agent'] = USER_AGENT;
}
if (args.gzip) {
if (!options.headers['Accept-Encoding'] && !options.headers['accept-encoding']) {
options.headers['Accept-Encoding'] = 'gzip';
}
}
function decodeContent(res, body, cb) {
var encoding = res.headers['content-encoding'];
if (body.length === 0) {
return cb(null, body, encoding);
}
if (!encoding || encoding.toLowerCase() !== 'gzip') {
return cb(null, body, encoding);
}
debug('gunzip %d length body', body.length);
zlib.gunzip(body, cb);
}
var writeStream = args.writeStream;
debug('Request#%d %s %s with headers %j, options.path: %s',
reqId, method, url, options.headers, options.path);
args.requestUrls.push(url);
function onResponse(res) {
if (timing) {
timing.waiting = Date.now() - requestStartTime;
}
debug('Request#%d %s `req response` event emit: status %d, headers: %j',
reqId, url, res.statusCode, res.headers);
if (args.streaming) {
var result = handleRedirect(res);
if (result.redirect) {
res.resume();
return;
}
if (result.error) {
res.resume();
return done(result.error, null, res);
}
return done(null, null, res);
}
res.on('close', function () {
debug('Request#%d %s: `res close` event emit, total size %d',
reqId, url, responseSize);
});
res.on('error', function () {
debug('Request#%d %s: `res error` event emit, total size %d',
reqId, url, responseSize);
});
res.on('aborted', function () {
responseAborted = true;
debug('Request#%d %s: `res aborted` event emit, total size %d',
reqId, url, responseSize);
});
if (writeStream) {
// If there's a writable stream to recieve the response data, just pipe the
// response stream to that writable stream and call the callback when it has
// finished writing.
//
// NOTE that when the response stream `res` emits an 'end' event it just
// means that it has finished piping data to another stream. In the
// meanwhile that writable stream may still writing data to the disk until
// it emits a 'close' event.
//
// That means that we should not apply callback until the 'close' of the
// writable stream is emited.
//
// See also:
// - https://github.com/TBEDP/urllib/commit/959ac3365821e0e028c231a5e8efca6af410eabb
// - http://nodejs.org/api/stream.html#stream_event_end
// - http://nodejs.org/api/stream.html#stream_event_close_1
var result = handleRedirect(res);
if (result.redirect) {
res.resume();
return;
}
if (result.error) {
res.resume();
// end ths stream first
writeStream.end();
return done(result.error, null, res);
}
// you can set consumeWriteStream false that only wait response end
if (args.consumeWriteStream === false) {
res.on('end', done.bind(null, null, null, res));
} else {
// node 0.10, 0.12: only emit res aborted, writeStream close not fired
if (isNode010 || isNode012) {
first([
[ writeStream, 'close' ],
[ res, 'aborted' ],
], function(_, stream, event) {
debug('Request#%d %s: writeStream or res %s event emitted', reqId, url, event);
done(__err || null, null, res);
});
} else {
writeStream.on('close', function() {
debug('Request#%d %s: writeStream close event emitted', reqId, url);
done(__err || null, null, res);
});
}
}
return res.pipe(writeStream);
}
// Otherwise, just concat those buffers.
//
// NOTE that the `chunk` is not a String but a Buffer. It means that if
// you simply concat two chunk with `+` you're actually converting both
// Buffers into Strings before concating them. It'll cause problems when
// dealing with multi-byte characters.
//
// The solution is to store each chunk in an array and concat them with
// 'buffer-concat' when all chunks is recieved.
//
// See also:
// http://cnodejs.org/topic/4faf65852e8fb5bc65113403
var chunks = [];
res.on('data', function (chunk) {
debug('Request#%d %s: `res data` event emit, size %d', reqId, url, chunk.length);
responseSize += chunk.length;
chunks.push(chunk);
});
res.on('end', function () {
var body = Buffer.concat(chunks, responseSize);
debug('Request#%d %s: `res end` event emit, total size %d, _dumped: %s',
reqId, url, responseSize, res._dumped);
if (__err) {
// req.abort() after `res data` event emit.
return done(__err, body, res);
}
var result = handleRedirect(res);
if (result.error) {
return done(result.error, body, res);
}
if (result.redirect) {
return;
}
decodeContent(res, body, function (err, data, encoding) {
if (err) {
return done(err, body, res);
}
// if body not decode, dont touch it
if (!encoding && TEXT_DATA_TYPES.indexOf(args.dataType) >= 0) {
// try to decode charset
try {
data = decodeBodyByCharset(data, res);
} catch (e) {
debug('decodeBodyByCharset error: %s', e);
// if error, dont touch it
return done(null, data, res);
}
if (args.dataType === 'json') {
if (responseSize === 0) {
data = null;
} else {
var r = parseJSON(data, fixJSONCtlChars);
if (r.error) {
err = r.error;
} else {
data = r.data;
}
}
}
}
if (responseAborted) {
// err = new Error('Remote socket was terminated before `response.end()` was called');
// err.name = 'RemoteSocketClosedError';
debug('Request#%d %s: Remote socket was terminated before `response.end()` was called', reqId, url);
}
done(err, data, res);
});
});
}
var connectTimeout, responseTimeout;
if (Array.isArray(args.timeout)) {
connectTimeout = ms(args.timeout[0]);
responseTimeout = ms(args.timeout[1]);
} else { // set both timeout equal
connectTimeout = responseTimeout = ms(args.timeout);
}
debug('ConnectTimeout: %d, ResponseTimeout: %d', connectTimeout, responseTimeout);
function startConnectTimer() {
debug('Connect timer ticking, timeout: %d', connectTimeout);
connectTimer = setTimeout(function () {
connectTimer = null;
if (statusCode === -1) {
statusCode = -2;
}
var msg = 'Connect timeout for ' + connectTimeout + 'ms';
var errorName = 'ConnectionTimeoutError';
if (!req.socket) {
errorName = 'SocketAssignTimeoutError';
msg += ', working sockets is full';
}
__err = new Error(msg);
__err.name = errorName;
__err.requestId = reqId;
debug('ConnectTimeout: Request#%d %s %s: %s, connected: %s', reqId, url, __err.name, msg, connected);
abortRequest();
}, connectTimeout);
}
function startResposneTimer() {
debug('Response timer ticking, timeout: %d', responseTimeout);
responseTimer = setTimeout(function () {
responseTimer = null;
var msg = 'Response timeout for ' + responseTimeout + 'ms';
var errorName = 'ResponseTimeoutError';
__err = new Error(msg);
__err.name = errorName;
__err.requestId = reqId;
debug('ResponseTimeout: Request#%d %s %s: %s, connected: %s', reqId, url, __err.name, msg, connected);
abortRequest();
}, responseTimeout);
}
var req;
// request headers checker will throw error
try {
req = httplib.request(options, onResponse);
} catch (err) {
return done(err);
}
// environment detection: browser or nodejs
if (typeof(window) === 'undefined') {
// start connect timer just after `request` return, and just in nodejs environment
startConnectTimer();
}
function abortRequest() {
debug('Request#%d %s abort, connected: %s', reqId, url, connected);
// it wont case error event when req haven't been assigned a socket yet.
if (!req.socket) {
__err.noSocket = true;
done(__err);
}
req.abort();
}
if (timing) {
// request sent
req.on('finish', function() {
timing.requestSent = Date.now() - requestStartTime;
});
}
req.once('socket', function (socket) {
if (timing) {
// socket queuing time
timing.queuing = Date.now() - requestStartTime;
}
// https://github.com/nodejs/node/blob/master/lib/net.js#L377
// https://github.com/nodejs/node/blob/v0.10.40-release/lib/net.js#L352
// should use socket.socket on 0.10.x
if (isNode010 && socket.socket) {
socket = socket.socket;
}
var readyState = socket.readyState;
if (readyState === 'opening') {
socket.once('lookup', function(err, ip, addressType) {
debug('Request#%d %s lookup: %s, %s, %s', reqId, url, err, ip, addressType);
if (timing) {
timing.dnslookup = Date.now() - requestStartTime;
}
if (ip) {
remoteAddress = ip;
}
});
socket.once('connect', function() {
if (timing) {
// socket connected
timing.connected = Date.now() - requestStartTime;
}
// cancel socket timer at first and start tick for TTFB
cancelConnectTimer();
startResposneTimer();
debug('Request#%d %s new socket connected', reqId, url);
connected = true;
if (!remoteAddress) {
remoteAddress = socket.remoteAddress;
}
remotePort = socket.remotePort;
});
return;
}
debug('Request#%d %s reuse socket connected, readyState: %s', reqId, url, readyState);
connected = true;
keepAliveSocket = true;
if (!remoteAddress) {
remoteAddress = socket.remoteAddress;
}
remotePort = socket.remotePort;
// reuse socket, timer should be canceled.
cancelConnectTimer();
startResposneTimer();
});
req.on('error', function (err) {
if (err.name === 'Error') {
err.name = connected ? 'ResponseError' : 'RequestError';
}
err.message += ' (req "error")';
debug('Request#%d %s `req error` event emit, %s: %s', reqId, url, err.name, err.message);
done(__err || err);
});
if (writeStream) {
writeStream.once('error', function (err) {
err.message += ' (writeStream "error")';
__err = err;
debug('Request#%d %s `writeStream error` event emit, %s: %s', reqId, url, err.name, err.message);
abortRequest();
});
}
if (args.stream) {
args.stream.pipe(req);
args.stream.once('error', function (err) {
err.message += ' (stream "error")';
__err = err;
debug('Request#%d %s `readStream error` event emit, %s: %s', reqId, url, err.name, err.message);
abortRequest();
});
} else {
req.end(body);
}
req.requestId = reqId;
return req;
};
var JSONCtlCharsMap = {
'"': '\\"', // \u0022
'\\': '\\\\', // \u005c
'\b': '\\b', // \u0008
'\f': '\\f', // \u000c
'\n': '\\n', // \u000a
'\r': '\\r', // \u000d
'\t': '\\t' // \u0009
};
var JSONCtlCharsRE = /[\u0000-\u001F\u005C]/g;
function _replaceOneChar(c) {
return JSONCtlCharsMap[c] || '\\u' + (c.charCodeAt(0) + 0x10000).toString(16).substr(1);
}
function replaceJSONCtlChars(str) {
return str.replace(JSONCtlCharsRE, _replaceOneChar);
}
function parseJSON(data, fixJSONCtlChars) {
var result = {
error: null,
data: null
};
if (fixJSONCtlChars) {
// https://github.com/node-modules/urllib/pull/77
// remote the control characters (U+0000 through U+001F)
data = replaceJSONCtlChars(data);
}
try {
result.data = JSON.parse(data);
} catch (err) {
if (err.name === 'SyntaxError') {
err.name = 'JSONResponseFormatError';
}
if (data.length > 1024) {
// show 0~512 ... -512~end data
err.message += ' (data json format: ' +
JSON.stringify(data.slice(0, 512)) + ' ...skip... ' + JSON.stringify(data.slice(data.length - 512)) + ')';
} else {
err.message += ' (data json format: ' + JSON.stringify(data) + ')';
}
result.error = err;
}
return result;
}
/**
* decode response body by parse `content-type`'s charset
* @param {Buffer} data
* @param {Http(s)Response} res
* @return {String}
*/
function decodeBodyByCharset(data, res) {
var type = res.headers['content-type'];
if (!type) {
return data.toString();
}
var type = parseContentType(type);
var charset = type.parameters.charset || 'utf-8';
if (!Buffer.isEncoding(charset)) {
if (!_iconv) {
_iconv = require('iconv-lite');
}
return _iconv.decode(data, charset);
}
return data.toString(charset);
}
function getAgent(agent, defaultAgent) {
return agent === undefined ? defaultAgent : agent;
}
function parseContentType(str) {
try {
return contentTypeParser.parse(str);
} catch (err) {
// ignore content-type error, tread as default
return { parameters: {} };
}
}
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