Your IP : 216.73.216.86
PK �Z�\�,+M� � package.jsonnu �[��� {
"_from": "follow-redirects@^1.15.6",
"_id": "follow-redirects@1.15.6",
"_inBundle": false,
"_integrity": "sha512-wWN62YITEaOpSK584EZXJafH1AGpO8RVgElfkuXbTOrPX4fIfOyEpW/CsiNd8JdYrAoOvafRTOEnvsO++qCqFA==",
"_location": "/follow-redirects",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "follow-redirects@^1.15.6",
"name": "follow-redirects",
"escapedName": "follow-redirects",
"rawSpec": "^1.15.6",
"saveSpec": null,
"fetchSpec": "^1.15.6"
},
"_requiredBy": [
"/axios"
],
"_resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.6.tgz",
"_shasum": "7f815c0cda4249c74ff09e95ef97c23b5fd0399b",
"_spec": "follow-redirects@^1.15.6",
"_where": "C:\\xampp\\htdocs\\emeraltd\\node_modules\\axios",
"author": {
"name": "Ruben Verborgh",
"email": "ruben@verborgh.org",
"url": "https://ruben.verborgh.org/"
},
"bugs": {
"url": "https://github.com/follow-redirects/follow-redirects/issues"
},
"bundleDependencies": false,
"contributors": [
{
"name": "Olivier Lalonde",
"email": "olalonde@gmail.com",
"url": "http://www.syskall.com"
},
{
"name": "James Talmage",
"email": "james@talmage.io"
}
],
"deprecated": false,
"description": "HTTP and HTTPS modules that follow redirects.",
"devDependencies": {
"concat-stream": "^2.0.0",
"eslint": "^5.16.0",
"express": "^4.16.4",
"lolex": "^3.1.0",
"mocha": "^6.0.2",
"nyc": "^14.1.1"
},
"engines": {
"node": ">=4.0"
},
"files": [
"*.js"
],
"funding": [
{
"type": "individual",
"url": "https://github.com/sponsors/RubenVerborgh"
}
],
"homepage": "https://github.com/follow-redirects/follow-redirects",
"keywords": [
"http",
"https",
"url",
"redirect",
"client",
"location",
"utility"
],
"license": "MIT",
"main": "index.js",
"name": "follow-redirects",
"peerDependenciesMeta": {
"debug": {
"optional": true
}
},
"repository": {
"type": "git",
"url": "git+ssh://git@github.com/follow-redirects/follow-redirects.git"
},
"scripts": {
"lint": "eslint *.js test",
"test": "nyc mocha"
},
"version": "1.15.6"
}
PK �Z�\��8% % http.jsnu �[��� module.exports = require("./").http;
PK �Z�\w��p p LICENSEnu �[��� Copyright 2014–present Olivier Lalonde <olalonde@gmail.com>, James Talmage <james@talmage.io>, Ruben Verborgh
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
PK �Z�\*,
��N �N index.jsnu �[��� var url = require("url");
var URL = url.URL;
var http = require("http");
var https = require("https");
var Writable = require("stream").Writable;
var assert = require("assert");
var debug = require("./debug");
// Whether to use the native URL object or the legacy url module
var useNativeURL = false;
try {
assert(new URL());
}
catch (error) {
useNativeURL = error.code === "ERR_INVALID_URL";
}
// URL fields to preserve in copy operations
var preservedUrlFields = [
"auth",
"host",
"hostname",
"href",
"path",
"pathname",
"port",
"protocol",
"query",
"search",
"hash",
];
// Create handlers that pass events from native requests
var events = ["abort", "aborted", "connect", "error", "socket", "timeout"];
var eventHandlers = Object.create(null);
events.forEach(function (event) {
eventHandlers[event] = function (arg1, arg2, arg3) {
this._redirectable.emit(event, arg1, arg2, arg3);
};
});
// Error types with codes
var InvalidUrlError = createErrorType(
"ERR_INVALID_URL",
"Invalid URL",
TypeError
);
var RedirectionError = createErrorType(
"ERR_FR_REDIRECTION_FAILURE",
"Redirected request failed"
);
var TooManyRedirectsError = createErrorType(
"ERR_FR_TOO_MANY_REDIRECTS",
"Maximum number of redirects exceeded",
RedirectionError
);
var MaxBodyLengthExceededError = createErrorType(
"ERR_FR_MAX_BODY_LENGTH_EXCEEDED",
"Request body larger than maxBodyLength limit"
);
var WriteAfterEndError = createErrorType(
"ERR_STREAM_WRITE_AFTER_END",
"write after end"
);
// istanbul ignore next
var destroy = Writable.prototype.destroy || noop;
// An HTTP(S) request that can be redirected
function RedirectableRequest(options, responseCallback) {
// Initialize the request
Writable.call(this);
this._sanitizeOptions(options);
this._options = options;
this._ended = false;
this._ending = false;
this._redirectCount = 0;
this._redirects = [];
this._requestBodyLength = 0;
this._requestBodyBuffers = [];
// Attach a callback if passed
if (responseCallback) {
this.on("response", responseCallback);
}
// React to responses of native requests
var self = this;
this._onNativeResponse = function (response) {
try {
self._processResponse(response);
}
catch (cause) {
self.emit("error", cause instanceof RedirectionError ?
cause : new RedirectionError({ cause: cause }));
}
};
// Perform the first request
this._performRequest();
}
RedirectableRequest.prototype = Object.create(Writable.prototype);
RedirectableRequest.prototype.abort = function () {
destroyRequest(this._currentRequest);
this._currentRequest.abort();
this.emit("abort");
};
RedirectableRequest.prototype.destroy = function (error) {
destroyRequest(this._currentRequest, error);
destroy.call(this, error);
return this;
};
// Writes buffered data to the current native request
RedirectableRequest.prototype.write = function (data, encoding, callback) {
// Writing is not allowed if end has been called
if (this._ending) {
throw new WriteAfterEndError();
}
// Validate input and shift parameters if necessary
if (!isString(data) && !isBuffer(data)) {
throw new TypeError("data should be a string, Buffer or Uint8Array");
}
if (isFunction(encoding)) {
callback = encoding;
encoding = null;
}
// Ignore empty buffers, since writing them doesn't invoke the callback
// https://github.com/nodejs/node/issues/22066
if (data.length === 0) {
if (callback) {
callback();
}
return;
}
// Only write when we don't exceed the maximum body length
if (this._requestBodyLength + data.length <= this._options.maxBodyLength) {
this._requestBodyLength += data.length;
this._requestBodyBuffers.push({ data: data, encoding: encoding });
this._currentRequest.write(data, encoding, callback);
}
// Error when we exceed the maximum body length
else {
this.emit("error", new MaxBodyLengthExceededError());
this.abort();
}
};
// Ends the current native request
RedirectableRequest.prototype.end = function (data, encoding, callback) {
// Shift parameters if necessary
if (isFunction(data)) {
callback = data;
data = encoding = null;
}
else if (isFunction(encoding)) {
callback = encoding;
encoding = null;
}
// Write data if needed and end
if (!data) {
this._ended = this._ending = true;
this._currentRequest.end(null, null, callback);
}
else {
var self = this;
var currentRequest = this._currentRequest;
this.write(data, encoding, function () {
self._ended = true;
currentRequest.end(null, null, callback);
});
this._ending = true;
}
};
// Sets a header value on the current native request
RedirectableRequest.prototype.setHeader = function (name, value) {
this._options.headers[name] = value;
this._currentRequest.setHeader(name, value);
};
// Clears a header value on the current native request
RedirectableRequest.prototype.removeHeader = function (name) {
delete this._options.headers[name];
this._currentRequest.removeHeader(name);
};
// Global timeout for all underlying requests
RedirectableRequest.prototype.setTimeout = function (msecs, callback) {
var self = this;
// Destroys the socket on timeout
function destroyOnTimeout(socket) {
socket.setTimeout(msecs);
socket.removeListener("timeout", socket.destroy);
socket.addListener("timeout", socket.destroy);
}
// Sets up a timer to trigger a timeout event
function startTimer(socket) {
if (self._timeout) {
clearTimeout(self._timeout);
}
self._timeout = setTimeout(function () {
self.emit("timeout");
clearTimer();
}, msecs);
destroyOnTimeout(socket);
}
// Stops a timeout from triggering
function clearTimer() {
// Clear the timeout
if (self._timeout) {
clearTimeout(self._timeout);
self._timeout = null;
}
// Clean up all attached listeners
self.removeListener("abort", clearTimer);
self.removeListener("error", clearTimer);
self.removeListener("response", clearTimer);
self.removeListener("close", clearTimer);
if (callback) {
self.removeListener("timeout", callback);
}
if (!self.socket) {
self._currentRequest.removeListener("socket", startTimer);
}
}
// Attach callback if passed
if (callback) {
this.on("timeout", callback);
}
// Start the timer if or when the socket is opened
if (this.socket) {
startTimer(this.socket);
}
else {
this._currentRequest.once("socket", startTimer);
}
// Clean up on events
this.on("socket", destroyOnTimeout);
this.on("abort", clearTimer);
this.on("error", clearTimer);
this.on("response", clearTimer);
this.on("close", clearTimer);
return this;
};
// Proxy all other public ClientRequest methods
[
"flushHeaders", "getHeader",
"setNoDelay", "setSocketKeepAlive",
].forEach(function (method) {
RedirectableRequest.prototype[method] = function (a, b) {
return this._currentRequest[method](a, b);
};
});
// Proxy all public ClientRequest properties
["aborted", "connection", "socket"].forEach(function (property) {
Object.defineProperty(RedirectableRequest.prototype, property, {
get: function () { return this._currentRequest[property]; },
});
});
RedirectableRequest.prototype._sanitizeOptions = function (options) {
// Ensure headers are always present
if (!options.headers) {
options.headers = {};
}
// Since http.request treats host as an alias of hostname,
// but the url module interprets host as hostname plus port,
// eliminate the host property to avoid confusion.
if (options.host) {
// Use hostname if set, because it has precedence
if (!options.hostname) {
options.hostname = options.host;
}
delete options.host;
}
// Complete the URL object when necessary
if (!options.pathname && options.path) {
var searchPos = options.path.indexOf("?");
if (searchPos < 0) {
options.pathname = options.path;
}
else {
options.pathname = options.path.substring(0, searchPos);
options.search = options.path.substring(searchPos);
}
}
};
// Executes the next native request (initial or redirect)
RedirectableRequest.prototype._performRequest = function () {
// Load the native protocol
var protocol = this._options.protocol;
var nativeProtocol = this._options.nativeProtocols[protocol];
if (!nativeProtocol) {
throw new TypeError("Unsupported protocol " + protocol);
}
// If specified, use the agent corresponding to the protocol
// (HTTP and HTTPS use different types of agents)
if (this._options.agents) {
var scheme = protocol.slice(0, -1);
this._options.agent = this._options.agents[scheme];
}
// Create the native request and set up its event handlers
var request = this._currentRequest =
nativeProtocol.request(this._options, this._onNativeResponse);
request._redirectable = this;
for (var event of events) {
request.on(event, eventHandlers[event]);
}
// RFC7230§5.3.1: When making a request directly to an origin server, […]
// a client MUST send only the absolute path […] as the request-target.
this._currentUrl = /^\//.test(this._options.path) ?
url.format(this._options) :
// When making a request to a proxy, […]
// a client MUST send the target URI in absolute-form […].
this._options.path;
// End a redirected request
// (The first request must be ended explicitly with RedirectableRequest#end)
if (this._isRedirect) {
// Write the request entity and end
var i = 0;
var self = this;
var buffers = this._requestBodyBuffers;
(function writeNext(error) {
// Only write if this request has not been redirected yet
/* istanbul ignore else */
if (request === self._currentRequest) {
// Report any write errors
/* istanbul ignore if */
if (error) {
self.emit("error", error);
}
// Write the next buffer if there are still left
else if (i < buffers.length) {
var buffer = buffers[i++];
/* istanbul ignore else */
if (!request.finished) {
request.write(buffer.data, buffer.encoding, writeNext);
}
}
// End the request if `end` has been called on us
else if (self._ended) {
request.end();
}
}
}());
}
};
// Processes a response from the current native request
RedirectableRequest.prototype._processResponse = function (response) {
// Store the redirected response
var statusCode = response.statusCode;
if (this._options.trackRedirects) {
this._redirects.push({
url: this._currentUrl,
headers: response.headers,
statusCode: statusCode,
});
}
// RFC7231§6.4: The 3xx (Redirection) class of status code indicates
// that further action needs to be taken by the user agent in order to
// fulfill the request. If a Location header field is provided,
// the user agent MAY automatically redirect its request to the URI
// referenced by the Location field value,
// even if the specific status code is not understood.
// If the response is not a redirect; return it as-is
var location = response.headers.location;
if (!location || this._options.followRedirects === false ||
statusCode < 300 || statusCode >= 400) {
response.responseUrl = this._currentUrl;
response.redirects = this._redirects;
this.emit("response", response);
// Clean up
this._requestBodyBuffers = [];
return;
}
// The response is a redirect, so abort the current request
destroyRequest(this._currentRequest);
// Discard the remainder of the response to avoid waiting for data
response.destroy();
// RFC7231§6.4: A client SHOULD detect and intervene
// in cyclical redirections (i.e., "infinite" redirection loops).
if (++this._redirectCount > this._options.maxRedirects) {
throw new TooManyRedirectsError();
}
// Store the request headers if applicable
var requestHeaders;
var beforeRedirect = this._options.beforeRedirect;
if (beforeRedirect) {
requestHeaders = Object.assign({
// The Host header was set by nativeProtocol.request
Host: response.req.getHeader("host"),
}, this._options.headers);
}
// RFC7231§6.4: Automatic redirection needs to done with
// care for methods not known to be safe, […]
// RFC7231§6.4.2–3: For historical reasons, a user agent MAY change
// the request method from POST to GET for the subsequent request.
var method = this._options.method;
if ((statusCode === 301 || statusCode === 302) && this._options.method === "POST" ||
// RFC7231§6.4.4: The 303 (See Other) status code indicates that
// the server is redirecting the user agent to a different resource […]
// A user agent can perform a retrieval request targeting that URI
// (a GET or HEAD request if using HTTP) […]
(statusCode === 303) && !/^(?:GET|HEAD)$/.test(this._options.method)) {
this._options.method = "GET";
// Drop a possible entity and headers related to it
this._requestBodyBuffers = [];
removeMatchingHeaders(/^content-/i, this._options.headers);
}
// Drop the Host header, as the redirect might lead to a different host
var currentHostHeader = removeMatchingHeaders(/^host$/i, this._options.headers);
// If the redirect is relative, carry over the host of the last request
var currentUrlParts = parseUrl(this._currentUrl);
var currentHost = currentHostHeader || currentUrlParts.host;
var currentUrl = /^\w+:/.test(location) ? this._currentUrl :
url.format(Object.assign(currentUrlParts, { host: currentHost }));
// Create the redirected request
var redirectUrl = resolveUrl(location, currentUrl);
debug("redirecting to", redirectUrl.href);
this._isRedirect = true;
spreadUrlObject(redirectUrl, this._options);
// Drop confidential headers when redirecting to a less secure protocol
// or to a different domain that is not a superdomain
if (redirectUrl.protocol !== currentUrlParts.protocol &&
redirectUrl.protocol !== "https:" ||
redirectUrl.host !== currentHost &&
!isSubdomain(redirectUrl.host, currentHost)) {
removeMatchingHeaders(/^(?:(?:proxy-)?authorization|cookie)$/i, this._options.headers);
}
// Evaluate the beforeRedirect callback
if (isFunction(beforeRedirect)) {
var responseDetails = {
headers: response.headers,
statusCode: statusCode,
};
var requestDetails = {
url: currentUrl,
method: method,
headers: requestHeaders,
};
beforeRedirect(this._options, responseDetails, requestDetails);
this._sanitizeOptions(this._options);
}
// Perform the redirected request
this._performRequest();
};
// Wraps the key/value object of protocols with redirect functionality
function wrap(protocols) {
// Default settings
var exports = {
maxRedirects: 21,
maxBodyLength: 10 * 1024 * 1024,
};
// Wrap each protocol
var nativeProtocols = {};
Object.keys(protocols).forEach(function (scheme) {
var protocol = scheme + ":";
var nativeProtocol = nativeProtocols[protocol] = protocols[scheme];
var wrappedProtocol = exports[scheme] = Object.create(nativeProtocol);
// Executes a request, following redirects
function request(input, options, callback) {
// Parse parameters, ensuring that input is an object
if (isURL(input)) {
input = spreadUrlObject(input);
}
else if (isString(input)) {
input = spreadUrlObject(parseUrl(input));
}
else {
callback = options;
options = validateUrl(input);
input = { protocol: protocol };
}
if (isFunction(options)) {
callback = options;
options = null;
}
// Set defaults
options = Object.assign({
maxRedirects: exports.maxRedirects,
maxBodyLength: exports.maxBodyLength,
}, input, options);
options.nativeProtocols = nativeProtocols;
if (!isString(options.host) && !isString(options.hostname)) {
options.hostname = "::1";
}
assert.equal(options.protocol, protocol, "protocol mismatch");
debug("options", options);
return new RedirectableRequest(options, callback);
}
// Executes a GET request, following redirects
function get(input, options, callback) {
var wrappedRequest = wrappedProtocol.request(input, options, callback);
wrappedRequest.end();
return wrappedRequest;
}
// Expose the properties on the wrapped protocol
Object.defineProperties(wrappedProtocol, {
request: { value: request, configurable: true, enumerable: true, writable: true },
get: { value: get, configurable: true, enumerable: true, writable: true },
});
});
return exports;
}
function noop() { /* empty */ }
function parseUrl(input) {
var parsed;
/* istanbul ignore else */
if (useNativeURL) {
parsed = new URL(input);
}
else {
// Ensure the URL is valid and absolute
parsed = validateUrl(url.parse(input));
if (!isString(parsed.protocol)) {
throw new InvalidUrlError({ input });
}
}
return parsed;
}
function resolveUrl(relative, base) {
/* istanbul ignore next */
return useNativeURL ? new URL(relative, base) : parseUrl(url.resolve(base, relative));
}
function validateUrl(input) {
if (/^\[/.test(input.hostname) && !/^\[[:0-9a-f]+\]$/i.test(input.hostname)) {
throw new InvalidUrlError({ input: input.href || input });
}
if (/^\[/.test(input.host) && !/^\[[:0-9a-f]+\](:\d+)?$/i.test(input.host)) {
throw new InvalidUrlError({ input: input.href || input });
}
return input;
}
function spreadUrlObject(urlObject, target) {
var spread = target || {};
for (var key of preservedUrlFields) {
spread[key] = urlObject[key];
}
// Fix IPv6 hostname
if (spread.hostname.startsWith("[")) {
spread.hostname = spread.hostname.slice(1, -1);
}
// Ensure port is a number
if (spread.port !== "") {
spread.port = Number(spread.port);
}
// Concatenate path
spread.path = spread.search ? spread.pathname + spread.search : spread.pathname;
return spread;
}
function removeMatchingHeaders(regex, headers) {
var lastValue;
for (var header in headers) {
if (regex.test(header)) {
lastValue = headers[header];
delete headers[header];
}
}
return (lastValue === null || typeof lastValue === "undefined") ?
undefined : String(lastValue).trim();
}
function createErrorType(code, message, baseClass) {
// Create constructor
function CustomError(properties) {
Error.captureStackTrace(this, this.constructor);
Object.assign(this, properties || {});
this.code = code;
this.message = this.cause ? message + ": " + this.cause.message : message;
}
// Attach constructor and set default properties
CustomError.prototype = new (baseClass || Error)();
Object.defineProperties(CustomError.prototype, {
constructor: {
value: CustomError,
enumerable: false,
},
name: {
value: "Error [" + code + "]",
enumerable: false,
},
});
return CustomError;
}
function destroyRequest(request, error) {
for (var event of events) {
request.removeListener(event, eventHandlers[event]);
}
request.on("error", noop);
request.destroy(error);
}
function isSubdomain(subdomain, domain) {
assert(isString(subdomain) && isString(domain));
var dot = subdomain.length - domain.length - 1;
return dot > 0 && subdomain[dot] === "." && subdomain.endsWith(domain);
}
function isString(value) {
return typeof value === "string" || value instanceof String;
}
function isFunction(value) {
return typeof value === "function";
}
function isBuffer(value) {
return typeof value === "object" && ("length" in value);
}
function isURL(value) {
return URL && value instanceof URL;
}
// Exports
module.exports = wrap({ http: http, https: https });
module.exports.wrap = wrap;
PK �Z�\5
�J& & https.jsnu �[��� module.exports = require("./").https;
PK �Z�\A��E; ; debug.jsnu �[��� var debug;
module.exports = function () {
if (!debug) {
try {
/* eslint global-require: off */
debug = require("debug")("follow-redirects");
}
catch (error) { /* */ }
if (typeof debug !== "function") {
debug = function () { /* */ };
}
}
debug.apply(null, arguments);
};
PK �Z�\���8 8 README.mdnu �[��� ## Follow Redirects
Drop-in replacement for Node's `http` and `https` modules that automatically follows redirects.
[](https://www.npmjs.com/package/follow-redirects)
[](https://github.com/follow-redirects/follow-redirects/actions)
[](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master)
[](https://www.npmjs.com/package/follow-redirects)
[](https://github.com/sponsors/RubenVerborgh)
`follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback)
methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback)
modules, with the exception that they will seamlessly follow redirects.
```javascript
const { http, https } = require('follow-redirects');
http.get('http://bit.ly/900913', response => {
response.on('data', chunk => {
console.log(chunk);
});
}).on('error', err => {
console.error(err);
});
```
You can inspect the final redirected URL through the `responseUrl` property on the `response`.
If no redirection happened, `responseUrl` is the original request URL.
```javascript
const request = https.request({
host: 'bitly.com',
path: '/UHfDGO',
}, response => {
console.log(response.responseUrl);
// 'http://duckduckgo.com/robots.txt'
});
request.end();
```
## Options
### Global options
Global options are set directly on the `follow-redirects` module:
```javascript
const followRedirects = require('follow-redirects');
followRedirects.maxRedirects = 10;
followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB
```
The following global options are supported:
- `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted.
- `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted.
### Per-request options
Per-request options are set by passing an `options` object:
```javascript
const url = require('url');
const { http, https } = require('follow-redirects');
const options = url.parse('http://bit.ly/900913');
options.maxRedirects = 10;
options.beforeRedirect = (options, response, request) => {
// Use this to adjust the request options upon redirecting,
// to inspect the latest response headers,
// or to cancel the request by throwing an error
// response.headers = the redirect response headers
// response.statusCode = the redirect response code (eg. 301, 307, etc.)
// request.url = the requested URL that resulted in a redirect
// request.headers = the headers in the request that resulted in a redirect
// request.method = the method of the request that resulted in a redirect
if (options.hostname === "example.com") {
options.auth = "user:password";
}
};
http.request(options);
```
In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback),
the following per-request options are supported:
- `followRedirects` (default: `true`) – whether redirects should be followed.
- `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted.
- `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted.
- `beforeRedirect` (default: `undefined`) – optionally change the request `options` on redirects, or abort the request by throwing an error.
- `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }`
- `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object.
### Advanced usage
By default, `follow-redirects` will use the Node.js default implementations
of [`http`](https://nodejs.org/api/http.html)
and [`https`](https://nodejs.org/api/https.html).
To enable features such as caching and/or intermediate request tracking,
you might instead want to wrap `follow-redirects` around custom protocol implementations:
```javascript
const { http, https } = require('follow-redirects').wrap({
http: require('your-custom-http'),
https: require('your-custom-https'),
});
```
Such custom protocols only need an implementation of the `request` method.
## Browser Usage
Due to the way the browser works,
the `http` and `https` browser equivalents perform redirects by default.
By requiring `follow-redirects` this way:
```javascript
const http = require('follow-redirects/http');
const https = require('follow-redirects/https');
```
you can easily tell webpack and friends to replace
`follow-redirect` by the built-in versions:
```json
{
"follow-redirects/http" : "http",
"follow-redirects/https" : "https"
}
```
## Contributing
Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues)
detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied
by tests. You can run the test suite locally with a simple `npm test` command.
## Debug Logging
`follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging
set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test
suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well.
## Authors
- [Ruben Verborgh](https://ruben.verborgh.org/)
- [Olivier Lalonde](mailto:olalonde@gmail.com)
- [James Talmage](mailto:james@talmage.io)
## License
[MIT License](https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE)
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