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// Copyright Joyent, Inc. and other Node contributors.

//

// 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.

'use strict';

require('internal/util').assertCrypto();

const tls = require('tls');

const url = require('url');

const http = require('http');

const util = require('util');

const inherits = util.inherits;

const debug = util.debuglog('https');

const { urlToOptions, searchParamsSymbol } = require('internal/url');

const errors = require('internal/errors');

function Server(opts, requestListener) {

if (!(this instanceof Server)) return new Server(opts, requestListener);

if (typeof opts === 'function') {

requestListener = opts;

opts = undefined;

}

opts = util._extend({}, opts);

if (process.features.tls_npn && !opts.NPNProtocols) {

opts.NPNProtocols = ['http/1.1', 'http/1.0'];

}

if (process.features.tls_alpn && !opts.ALPNProtocols) {

// http/1.0 is not defined as Protocol IDs in IANA

// http://www.iana.org/assignments/tls-extensiontype-values

// /tls-extensiontype-values.xhtml#alpn-protocol-ids

opts.ALPNProtocols = ['http/1.1'];

}

tls.Server.call(this, opts, http._connectionListener);

this.httpAllowHalfOpen = false;

if (requestListener) {

this.addListener('request', requestListener);

}

this.addListener('tlsClientError', function addListener(err, conn) {

if (!this.emit('clientError', err, conn))

conn.destroy(err);

});

this.timeout = 2 * 60 * 1000;

this.keepAliveTimeout = 5000;

}

inherits(Server, tls.Server);

exports.Server = Server;

Server.prototype.setTimeout = http.Server.prototype.setTimeout;

exports.createServer = function createServer(opts, requestListener) {

return new Server(opts, requestListener);

};

// HTTPS agents.

function createConnection(port, host, options) {

if (port !== null && typeof port === 'object') {

options = port;

} else if (host !== null && typeof host === 'object') {

options = host;

} else if (options === null || typeof options !== 'object') {

options = {};

}

if (typeof port === 'number') {

options.port = port;

}

if (typeof host === 'string') {

options.host = host;

}

debug('createConnection', options);

if (options._agentKey) {

const session = this._getSession(options._agentKey);

if (session) {

debug('reuse session for %j', options._agentKey);

options = util._extend({

session: session

}, options);

}

}

const socket = tls.connect(options, () => {

if (!options._agentKey)

return;

this._cacheSession(options._agentKey, socket.getSession());

});

// Evict session on error

socket.once('close', (err) => {

if (err)

this._evictSession(options._agentKey);

});

return socket;

}

function Agent(options) {

if (!(this instanceof Agent))

return new Agent(options);

http.Agent.call(this, options);

this.defaultPort = 443;

this.protocol = 'https:';

this.maxCachedSessions = this.options.maxCachedSessions;

if (this.maxCachedSessions === undefined)

this.maxCachedSessions = 100;

this._sessionCache = {

map: {},

list: []

};

}

inherits(Agent, http.Agent);

Agent.prototype.createConnection = createConnection;

Agent.prototype.getName = function getName(options) {

var name = http.Agent.prototype.getName.call(this, options);

name += ':';

if (options.ca)

name += options.ca;

name += ':';

if (options.cert)

name += options.cert;

name += ':';

if (options.ciphers)

name += options.ciphers;

name += ':';

if (options.key)

name += options.key;

name += ':';

if (options.pfx)

name += options.pfx;

name += ':';

if (options.rejectUnauthorized !== undefined)

name += options.rejectUnauthorized;

name += ':';

if (options.servername && options.servername !== options.host)

name += options.servername;

name += ':';

if (options.secureProtocol)

name += options.secureProtocol;

return name;

};

Agent.prototype._getSession = function _getSession(key) {

return this._sessionCache.map[key];

};

Agent.prototype._cacheSession = function _cacheSession(key, session) {

// Cache is disabled

if (this.maxCachedSessions === 0)

return;

// Fast case - update existing entry

if (this._sessionCache.map[key]) {

this._sessionCache.map[key] = session;

return;

}

// Put new entry

if (this._sessionCache.list.length >= this.maxCachedSessions) {

const oldKey = this._sessionCache.list.shift();

debug('evicting %j', oldKey);

delete this._sessionCache.map[oldKey];

}

this._sessionCache.list.push(key);

this._sessionCache.map[key] = session;

};

Agent.prototype._evictSession = function _evictSession(key) {

const index = this._sessionCache.list.indexOf(key);

if (index === -1)

return;

this._sessionCache.list.splice(index, 1);

delete this._sessionCache.map[key];

};

const globalAgent = new Agent();

exports.globalAgent = globalAgent;

exports.Agent = Agent;

exports.request = function request(options, cb) {

if (typeof options === 'string') {

options = url.parse(options);

if (!options.hostname) {

throw new errors.Error('ERR_INVALID_DOMAIN_NAME');

}

} else if (options && options[searchParamsSymbol] &&

options[searchParamsSymbol][searchParamsSymbol]) {

// url.URL instance

options = urlToOptions(options);

} else {

options = util._extend({}, options);

}

options._defaultAgent = globalAgent;

return http.request(options, cb);

};

exports.get = function get(options, cb) {

var req = exports.request(options, cb);

req.end();

return req;

};