blob: 43b2b10390db710dc1e05f77c0e52d9bf173bf17 [file] [log] [blame]
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const http = require("http");
const https = require("https");
const pm = require("./proxy");
let tunnel;
var HttpCodes;
(function (HttpCodes) {
HttpCodes[HttpCodes["OK"] = 200] = "OK";
HttpCodes[HttpCodes["MultipleChoices"] = 300] = "MultipleChoices";
HttpCodes[HttpCodes["MovedPermanently"] = 301] = "MovedPermanently";
HttpCodes[HttpCodes["ResourceMoved"] = 302] = "ResourceMoved";
HttpCodes[HttpCodes["SeeOther"] = 303] = "SeeOther";
HttpCodes[HttpCodes["NotModified"] = 304] = "NotModified";
HttpCodes[HttpCodes["UseProxy"] = 305] = "UseProxy";
HttpCodes[HttpCodes["SwitchProxy"] = 306] = "SwitchProxy";
HttpCodes[HttpCodes["TemporaryRedirect"] = 307] = "TemporaryRedirect";
HttpCodes[HttpCodes["PermanentRedirect"] = 308] = "PermanentRedirect";
HttpCodes[HttpCodes["BadRequest"] = 400] = "BadRequest";
HttpCodes[HttpCodes["Unauthorized"] = 401] = "Unauthorized";
HttpCodes[HttpCodes["PaymentRequired"] = 402] = "PaymentRequired";
HttpCodes[HttpCodes["Forbidden"] = 403] = "Forbidden";
HttpCodes[HttpCodes["NotFound"] = 404] = "NotFound";
HttpCodes[HttpCodes["MethodNotAllowed"] = 405] = "MethodNotAllowed";
HttpCodes[HttpCodes["NotAcceptable"] = 406] = "NotAcceptable";
HttpCodes[HttpCodes["ProxyAuthenticationRequired"] = 407] = "ProxyAuthenticationRequired";
HttpCodes[HttpCodes["RequestTimeout"] = 408] = "RequestTimeout";
HttpCodes[HttpCodes["Conflict"] = 409] = "Conflict";
HttpCodes[HttpCodes["Gone"] = 410] = "Gone";
HttpCodes[HttpCodes["TooManyRequests"] = 429] = "TooManyRequests";
HttpCodes[HttpCodes["InternalServerError"] = 500] = "InternalServerError";
HttpCodes[HttpCodes["NotImplemented"] = 501] = "NotImplemented";
HttpCodes[HttpCodes["BadGateway"] = 502] = "BadGateway";
HttpCodes[HttpCodes["ServiceUnavailable"] = 503] = "ServiceUnavailable";
HttpCodes[HttpCodes["GatewayTimeout"] = 504] = "GatewayTimeout";
})(HttpCodes = exports.HttpCodes || (exports.HttpCodes = {}));
var Headers;
(function (Headers) {
Headers["Accept"] = "accept";
Headers["ContentType"] = "content-type";
})(Headers = exports.Headers || (exports.Headers = {}));
var MediaTypes;
(function (MediaTypes) {
MediaTypes["ApplicationJson"] = "application/json";
})(MediaTypes = exports.MediaTypes || (exports.MediaTypes = {}));
/**
* Returns the proxy URL, depending upon the supplied url and proxy environment variables.
* @param serverUrl The server URL where the request will be sent. For example, https://api.github.com
*/
function getProxyUrl(serverUrl) {
let proxyUrl = pm.getProxyUrl(new URL(serverUrl));
return proxyUrl ? proxyUrl.href : '';
}
exports.getProxyUrl = getProxyUrl;
const HttpRedirectCodes = [
HttpCodes.MovedPermanently,
HttpCodes.ResourceMoved,
HttpCodes.SeeOther,
HttpCodes.TemporaryRedirect,
HttpCodes.PermanentRedirect
];
const HttpResponseRetryCodes = [
HttpCodes.BadGateway,
HttpCodes.ServiceUnavailable,
HttpCodes.GatewayTimeout
];
const RetryableHttpVerbs = ['OPTIONS', 'GET', 'DELETE', 'HEAD'];
const ExponentialBackoffCeiling = 10;
const ExponentialBackoffTimeSlice = 5;
class HttpClientError extends Error {
constructor(message, statusCode) {
super(message);
this.name = 'HttpClientError';
this.statusCode = statusCode;
Object.setPrototypeOf(this, HttpClientError.prototype);
}
}
exports.HttpClientError = HttpClientError;
class HttpClientResponse {
constructor(message) {
this.message = message;
}
readBody() {
return new Promise(async (resolve, reject) => {
let output = Buffer.alloc(0);
this.message.on('data', (chunk) => {
output = Buffer.concat([output, chunk]);
});
this.message.on('end', () => {
resolve(output.toString());
});
});
}
}
exports.HttpClientResponse = HttpClientResponse;
function isHttps(requestUrl) {
let parsedUrl = new URL(requestUrl);
return parsedUrl.protocol === 'https:';
}
exports.isHttps = isHttps;
class HttpClient {
constructor(userAgent, handlers, requestOptions) {
this._ignoreSslError = false;
this._allowRedirects = true;
this._allowRedirectDowngrade = false;
this._maxRedirects = 50;
this._allowRetries = false;
this._maxRetries = 1;
this._keepAlive = false;
this._disposed = false;
this.userAgent = userAgent;
this.handlers = handlers || [];
this.requestOptions = requestOptions;
if (requestOptions) {
if (requestOptions.ignoreSslError != null) {
this._ignoreSslError = requestOptions.ignoreSslError;
}
this._socketTimeout = requestOptions.socketTimeout;
if (requestOptions.allowRedirects != null) {
this._allowRedirects = requestOptions.allowRedirects;
}
if (requestOptions.allowRedirectDowngrade != null) {
this._allowRedirectDowngrade = requestOptions.allowRedirectDowngrade;
}
if (requestOptions.maxRedirects != null) {
this._maxRedirects = Math.max(requestOptions.maxRedirects, 0);
}
if (requestOptions.keepAlive != null) {
this._keepAlive = requestOptions.keepAlive;
}
if (requestOptions.allowRetries != null) {
this._allowRetries = requestOptions.allowRetries;
}
if (requestOptions.maxRetries != null) {
this._maxRetries = requestOptions.maxRetries;
}
}
}
options(requestUrl, additionalHeaders) {
return this.request('OPTIONS', requestUrl, null, additionalHeaders || {});
}
get(requestUrl, additionalHeaders) {
return this.request('GET', requestUrl, null, additionalHeaders || {});
}
del(requestUrl, additionalHeaders) {
return this.request('DELETE', requestUrl, null, additionalHeaders || {});
}
post(requestUrl, data, additionalHeaders) {
return this.request('POST', requestUrl, data, additionalHeaders || {});
}
patch(requestUrl, data, additionalHeaders) {
return this.request('PATCH', requestUrl, data, additionalHeaders || {});
}
put(requestUrl, data, additionalHeaders) {
return this.request('PUT', requestUrl, data, additionalHeaders || {});
}
head(requestUrl, additionalHeaders) {
return this.request('HEAD', requestUrl, null, additionalHeaders || {});
}
sendStream(verb, requestUrl, stream, additionalHeaders) {
return this.request(verb, requestUrl, stream, additionalHeaders);
}
/**
* Gets a typed object from an endpoint
* Be aware that not found returns a null. Other errors (4xx, 5xx) reject the promise
*/
async getJson(requestUrl, additionalHeaders = {}) {
additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
let res = await this.get(requestUrl, additionalHeaders);
return this._processResponse(res, this.requestOptions);
}
async postJson(requestUrl, obj, additionalHeaders = {}) {
let data = JSON.stringify(obj, null, 2);
additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);
let res = await this.post(requestUrl, data, additionalHeaders);
return this._processResponse(res, this.requestOptions);
}
async putJson(requestUrl, obj, additionalHeaders = {}) {
let data = JSON.stringify(obj, null, 2);
additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);
let res = await this.put(requestUrl, data, additionalHeaders);
return this._processResponse(res, this.requestOptions);
}
async patchJson(requestUrl, obj, additionalHeaders = {}) {
let data = JSON.stringify(obj, null, 2);
additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);
let res = await this.patch(requestUrl, data, additionalHeaders);
return this._processResponse(res, this.requestOptions);
}
/**
* Makes a raw http request.
* All other methods such as get, post, patch, and request ultimately call this.
* Prefer get, del, post and patch
*/
async request(verb, requestUrl, data, headers) {
if (this._disposed) {
throw new Error('Client has already been disposed.');
}
let parsedUrl = new URL(requestUrl);
let info = this._prepareRequest(verb, parsedUrl, headers);
// Only perform retries on reads since writes may not be idempotent.
let maxTries = this._allowRetries && RetryableHttpVerbs.indexOf(verb) != -1
? this._maxRetries + 1
: 1;
let numTries = 0;
let response;
while (numTries < maxTries) {
response = await this.requestRaw(info, data);
// Check if it's an authentication challenge
if (response &&
response.message &&
response.message.statusCode === HttpCodes.Unauthorized) {
let authenticationHandler;
for (let i = 0; i < this.handlers.length; i++) {
if (this.handlers[i].canHandleAuthentication(response)) {
authenticationHandler = this.handlers[i];
break;
}
}
if (authenticationHandler) {
return authenticationHandler.handleAuthentication(this, info, data);
}
else {
// We have received an unauthorized response but have no handlers to handle it.
// Let the response return to the caller.
return response;
}
}
let redirectsRemaining = this._maxRedirects;
while (HttpRedirectCodes.indexOf(response.message.statusCode) != -1 &&
this._allowRedirects &&
redirectsRemaining > 0) {
const redirectUrl = response.message.headers['location'];
if (!redirectUrl) {
// if there's no location to redirect to, we won't
break;
}
let parsedRedirectUrl = new URL(redirectUrl);
if (parsedUrl.protocol == 'https:' &&
parsedUrl.protocol != parsedRedirectUrl.protocol &&
!this._allowRedirectDowngrade) {
throw new Error('Redirect from HTTPS to HTTP protocol. This downgrade is not allowed for security reasons. If you want to allow this behavior, set the allowRedirectDowngrade option to true.');
}
// we need to finish reading the response before reassigning response
// which will leak the open socket.
await response.readBody();
// strip authorization header if redirected to a different hostname
if (parsedRedirectUrl.hostname !== parsedUrl.hostname) {
for (let header in headers) {
// header names are case insensitive
if (header.toLowerCase() === 'authorization') {
delete headers[header];
}
}
}
// let's make the request with the new redirectUrl
info = this._prepareRequest(verb, parsedRedirectUrl, headers);
response = await this.requestRaw(info, data);
redirectsRemaining--;
}
if (HttpResponseRetryCodes.indexOf(response.message.statusCode) == -1) {
// If not a retry code, return immediately instead of retrying
return response;
}
numTries += 1;
if (numTries < maxTries) {
await response.readBody();
await this._performExponentialBackoff(numTries);
}
}
return response;
}
/**
* Needs to be called if keepAlive is set to true in request options.
*/
dispose() {
if (this._agent) {
this._agent.destroy();
}
this._disposed = true;
}
/**
* Raw request.
* @param info
* @param data
*/
requestRaw(info, data) {
return new Promise((resolve, reject) => {
let callbackForResult = function (err, res) {
if (err) {
reject(err);
}
resolve(res);
};
this.requestRawWithCallback(info, data, callbackForResult);
});
}
/**
* Raw request with callback.
* @param info
* @param data
* @param onResult
*/
requestRawWithCallback(info, data, onResult) {
let socket;
if (typeof data === 'string') {
info.options.headers['Content-Length'] = Buffer.byteLength(data, 'utf8');
}
let callbackCalled = false;
let handleResult = (err, res) => {
if (!callbackCalled) {
callbackCalled = true;
onResult(err, res);
}
};
let req = info.httpModule.request(info.options, (msg) => {
let res = new HttpClientResponse(msg);
handleResult(null, res);
});
req.on('socket', sock => {
socket = sock;
});
// If we ever get disconnected, we want the socket to timeout eventually
req.setTimeout(this._socketTimeout || 3 * 60000, () => {
if (socket) {
socket.end();
}
handleResult(new Error('Request timeout: ' + info.options.path), null);
});
req.on('error', function (err) {
// err has statusCode property
// res should have headers
handleResult(err, null);
});
if (data && typeof data === 'string') {
req.write(data, 'utf8');
}
if (data && typeof data !== 'string') {
data.on('close', function () {
req.end();
});
data.pipe(req);
}
else {
req.end();
}
}
/**
* Gets an http agent. This function is useful when you need an http agent that handles
* routing through a proxy server - depending upon the url and proxy environment variables.
* @param serverUrl The server URL where the request will be sent. For example, https://api.github.com
*/
getAgent(serverUrl) {
let parsedUrl = new URL(serverUrl);
return this._getAgent(parsedUrl);
}
_prepareRequest(method, requestUrl, headers) {
const info = {};
info.parsedUrl = requestUrl;
const usingSsl = info.parsedUrl.protocol === 'https:';
info.httpModule = usingSsl ? https : http;
const defaultPort = usingSsl ? 443 : 80;
info.options = {};
info.options.host = info.parsedUrl.hostname;
info.options.port = info.parsedUrl.port
? parseInt(info.parsedUrl.port)
: defaultPort;
info.options.path =
(info.parsedUrl.pathname || '') + (info.parsedUrl.search || '');
info.options.method = method;
info.options.headers = this._mergeHeaders(headers);
if (this.userAgent != null) {
info.options.headers['user-agent'] = this.userAgent;
}
info.options.agent = this._getAgent(info.parsedUrl);
// gives handlers an opportunity to participate
if (this.handlers) {
this.handlers.forEach(handler => {
handler.prepareRequest(info.options);
});
}
return info;
}
_mergeHeaders(headers) {
const lowercaseKeys = obj => Object.keys(obj).reduce((c, k) => ((c[k.toLowerCase()] = obj[k]), c), {});
if (this.requestOptions && this.requestOptions.headers) {
return Object.assign({}, lowercaseKeys(this.requestOptions.headers), lowercaseKeys(headers));
}
return lowercaseKeys(headers || {});
}
_getExistingOrDefaultHeader(additionalHeaders, header, _default) {
const lowercaseKeys = obj => Object.keys(obj).reduce((c, k) => ((c[k.toLowerCase()] = obj[k]), c), {});
let clientHeader;
if (this.requestOptions && this.requestOptions.headers) {
clientHeader = lowercaseKeys(this.requestOptions.headers)[header];
}
return additionalHeaders[header] || clientHeader || _default;
}
_getAgent(parsedUrl) {
let agent;
let proxyUrl = pm.getProxyUrl(parsedUrl);
let useProxy = proxyUrl && proxyUrl.hostname;
if (this._keepAlive && useProxy) {
agent = this._proxyAgent;
}
if (this._keepAlive && !useProxy) {
agent = this._agent;
}
// if agent is already assigned use that agent.
if (!!agent) {
return agent;
}
const usingSsl = parsedUrl.protocol === 'https:';
let maxSockets = 100;
if (!!this.requestOptions) {
maxSockets = this.requestOptions.maxSockets || http.globalAgent.maxSockets;
}
if (useProxy) {
// If using proxy, need tunnel
if (!tunnel) {
tunnel = require('tunnel');
}
const agentOptions = {
maxSockets: maxSockets,
keepAlive: this._keepAlive,
proxy: {
...((proxyUrl.username || proxyUrl.password) && {
proxyAuth: `${proxyUrl.username}:${proxyUrl.password}`
}),
host: proxyUrl.hostname,
port: proxyUrl.port
}
};
let tunnelAgent;
const overHttps = proxyUrl.protocol === 'https:';
if (usingSsl) {
tunnelAgent = overHttps ? tunnel.httpsOverHttps : tunnel.httpsOverHttp;
}
else {
tunnelAgent = overHttps ? tunnel.httpOverHttps : tunnel.httpOverHttp;
}
agent = tunnelAgent(agentOptions);
this._proxyAgent = agent;
}
// if reusing agent across request and tunneling agent isn't assigned create a new agent
if (this._keepAlive && !agent) {
const options = { keepAlive: this._keepAlive, maxSockets: maxSockets };
agent = usingSsl ? new https.Agent(options) : new http.Agent(options);
this._agent = agent;
}
// if not using private agent and tunnel agent isn't setup then use global agent
if (!agent) {
agent = usingSsl ? https.globalAgent : http.globalAgent;
}
if (usingSsl && this._ignoreSslError) {
// we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
// http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
// we have to cast it to any and change it directly
agent.options = Object.assign(agent.options || {}, {
rejectUnauthorized: false
});
}
return agent;
}
_performExponentialBackoff(retryNumber) {
retryNumber = Math.min(ExponentialBackoffCeiling, retryNumber);
const ms = ExponentialBackoffTimeSlice * Math.pow(2, retryNumber);
return new Promise(resolve => setTimeout(() => resolve(), ms));
}
static dateTimeDeserializer(key, value) {
if (typeof value === 'string') {
let a = new Date(value);
if (!isNaN(a.valueOf())) {
return a;
}
}
return value;
}
async _processResponse(res, options) {
return new Promise(async (resolve, reject) => {
const statusCode = res.message.statusCode;
const response = {
statusCode: statusCode,
result: null,
headers: {}
};
// not found leads to null obj returned
if (statusCode == HttpCodes.NotFound) {
resolve(response);
}
let obj;
let contents;
// get the result from the body
try {
contents = await res.readBody();
if (contents && contents.length > 0) {
if (options && options.deserializeDates) {
obj = JSON.parse(contents, HttpClient.dateTimeDeserializer);
}
else {
obj = JSON.parse(contents);
}
response.result = obj;
}
response.headers = res.message.headers;
}
catch (err) {
// Invalid resource (contents not json); leaving result obj null
}
// note that 3xx redirects are handled by the http layer.
if (statusCode > 299) {
let msg;
// if exception/error in body, attempt to get better error
if (obj && obj.message) {
msg = obj.message;
}
else if (contents && contents.length > 0) {
// it may be the case that the exception is in the body message as string
msg = contents;
}
else {
msg = 'Failed request: (' + statusCode + ')';
}
let err = new HttpClientError(msg, statusCode);
err.result = response.result;
reject(err);
}
else {
resolve(response);
}
});
}
}
exports.HttpClient = HttpClient;