10 files changed, 1467 insertions, 0 deletions
diff --git a/node_modules/http2-wrapper/source/agent.js b/node_modules/http2-wrapper/source/agent.js
new file mode 100644
index 0000000..b2b1cff
--- /dev/null
+++ b/node_modules/http2-wrapper/source/agent.js
@@ -0,0 +1,670 @@
+'use strict';
+const EventEmitter = require('events');
+const tls = require('tls');
+const http2 = require('http2');
+const QuickLRU = require('quick-lru');
+
+const kCurrentStreamsCount = Symbol('currentStreamsCount');
+const kRequest = Symbol('request');
+const kOriginSet = Symbol('cachedOriginSet');
+const kGracefullyClosing = Symbol('gracefullyClosing');
+
+const nameKeys = [
+	// `http2.connect()` options
+	'maxDeflateDynamicTableSize',
+	'maxSessionMemory',
+	'maxHeaderListPairs',
+	'maxOutstandingPings',
+	'maxReservedRemoteStreams',
+	'maxSendHeaderBlockLength',
+	'paddingStrategy',
+
+	// `tls.connect()` options
+	'localAddress',
+	'path',
+	'rejectUnauthorized',
+	'minDHSize',
+
+	// `tls.createSecureContext()` options
+	'ca',
+	'cert',
+	'clientCertEngine',
+	'ciphers',
+	'key',
+	'pfx',
+	'servername',
+	'minVersion',
+	'maxVersion',
+	'secureProtocol',
+	'crl',
+	'honorCipherOrder',
+	'ecdhCurve',
+	'dhparam',
+	'secureOptions',
+	'sessionIdContext'
+];
+
+const getSortedIndex = (array, value, compare) => {
+	let low = 0;
+	let high = array.length;
+
+	while (low < high) {
+		const mid = (low + high) >>> 1;
+
+		/* istanbul ignore next */
+		if (compare(array[mid], value)) {
+			// This never gets called because we use descending sort. Better to have this anyway.
+			low = mid + 1;
+		} else {
+			high = mid;
+		}
+	}
+
+	return low;
+};
+
+const compareSessions = (a, b) => {
+	return a.remoteSettings.maxConcurrentStreams > b.remoteSettings.maxConcurrentStreams;
+};
+
+// See https://tools.ietf.org/html/rfc8336
+const closeCoveredSessions = (where, session) => {
+	// Clients SHOULD NOT emit new requests on any connection whose Origin
+	// Set is a proper subset of another connection's Origin Set, and they
+	// SHOULD close it once all outstanding requests are satisfied.
+	for (const coveredSession of where) {
+		if (
+			// The set is a proper subset when its length is less than the other set.
+			coveredSession[kOriginSet].length < session[kOriginSet].length &&
+
+			// And the other set includes all elements of the subset.
+			coveredSession[kOriginSet].every(origin => session[kOriginSet].includes(origin)) &&
+
+			// Makes sure that the session can handle all requests from the covered session.
+			coveredSession[kCurrentStreamsCount] + session[kCurrentStreamsCount] <= session.remoteSettings.maxConcurrentStreams
+		) {
+			// This allows pending requests to finish and prevents making new requests.
+			gracefullyClose(coveredSession);
+		}
+	}
+};
+
+// This is basically inverted `closeCoveredSessions(...)`.
+const closeSessionIfCovered = (where, coveredSession) => {
+	for (const session of where) {
+		if (
+			coveredSession[kOriginSet].length < session[kOriginSet].length &&
+			coveredSession[kOriginSet].every(origin => session[kOriginSet].includes(origin)) &&
+			coveredSession[kCurrentStreamsCount] + session[kCurrentStreamsCount] <= session.remoteSettings.maxConcurrentStreams
+		) {
+			gracefullyClose(coveredSession);
+		}
+	}
+};
+
+const getSessions = ({agent, isFree}) => {
+	const result = {};
+
+	// eslint-disable-next-line guard-for-in
+	for (const normalizedOptions in agent.sessions) {
+		const sessions = agent.sessions[normalizedOptions];
+
+		const filtered = sessions.filter(session => {
+			const result = session[Agent.kCurrentStreamsCount] < session.remoteSettings.maxConcurrentStreams;
+
+			return isFree ? result : !result;
+		});
+
+		if (filtered.length !== 0) {
+			result[normalizedOptions] = filtered;
+		}
+	}
+
+	return result;
+};
+
+const gracefullyClose = session => {
+	session[kGracefullyClosing] = true;
+
+	if (session[kCurrentStreamsCount] === 0) {
+		session.close();
+	}
+};
+
+class Agent extends EventEmitter {
+	constructor({timeout = 60000, maxSessions = Infinity, maxFreeSessions = 10, maxCachedTlsSessions = 100} = {}) {
+		super();
+
+		// A session is considered busy when its current streams count
+		// is equal to or greater than the `maxConcurrentStreams` value.
+
+		// A session is considered free when its current streams count
+		// is less than the `maxConcurrentStreams` value.
+
+		// SESSIONS[NORMALIZED_OPTIONS] = [];
+		this.sessions = {};
+
+		// The queue for creating new sessions. It looks like this:
+		// QUEUE[NORMALIZED_OPTIONS][NORMALIZED_ORIGIN] = ENTRY_FUNCTION
+		//
+		// The entry function has `listeners`, `completed` and `destroyed` properties.
+		// `listeners` is an array of objects containing `resolve` and `reject` functions.
+		// `completed` is a boolean. It's set to true after ENTRY_FUNCTION is executed.
+		// `destroyed` is a boolean. If it's set to true, the session will be destroyed if hasn't connected yet.
+		this.queue = {};
+
+		// Each session will use this timeout value.
+		this.timeout = timeout;
+
+		// Max sessions in total
+		this.maxSessions = maxSessions;
+
+		// Max free sessions in total
+		// TODO: decreasing `maxFreeSessions` should close some sessions
+		this.maxFreeSessions = maxFreeSessions;
+
+		this._freeSessionsCount = 0;
+		this._sessionsCount = 0;
+
+		// We don't support push streams by default.
+		this.settings = {
+			enablePush: false
+		};
+
+		// Reusing TLS sessions increases performance.
+		this.tlsSessionCache = new QuickLRU({maxSize: maxCachedTlsSessions});
+	}
+
+	static normalizeOrigin(url, servername) {
+		if (typeof url === 'string') {
+			url = new URL(url);
+		}
+
+		if (servername && url.hostname !== servername) {
+			url.hostname = servername;
+		}
+
+		return url.origin;
+	}
+
+	normalizeOptions(options) {
+		let normalized = '';
+
+		if (options) {
+			for (const key of nameKeys) {
+				if (options[key]) {
+					normalized += `:${options[key]}`;
+				}
+			}
+		}
+
+		return normalized;
+	}
+
+	_tryToCreateNewSession(normalizedOptions, normalizedOrigin) {
+		if (!(normalizedOptions in this.queue) || !(normalizedOrigin in this.queue[normalizedOptions])) {
+			return;
+		}
+
+		const item = this.queue[normalizedOptions][normalizedOrigin];
+
+		// The entry function can be run only once.
+		// BUG: The session may be never created when:
+		// - the first condition is false AND
+		// - this function is never called with the same arguments in the future.
+		if (this._sessionsCount < this.maxSessions && !item.completed) {
+			item.completed = true;
+
+			item();
+		}
+	}
+
+	getSession(origin, options, listeners) {
+		return new Promise((resolve, reject) => {
+			if (Array.isArray(listeners)) {
+				listeners = [...listeners];
+
+				// Resolve the current promise ASAP, we're just moving the listeners.
+				// They will be executed at a different time.
+				resolve();
+			} else {
+				listeners = [{resolve, reject}];
+			}
+
+			const normalizedOptions = this.normalizeOptions(options);
+			const normalizedOrigin = Agent.normalizeOrigin(origin, options && options.servername);
+
+			if (normalizedOrigin === undefined) {
+				for (const {reject} of listeners) {
+					reject(new TypeError('The `origin` argument needs to be a string or an URL object'));
+				}
+
+				return;
+			}
+
+			if (normalizedOptions in this.sessions) {
+				const sessions = this.sessions[normalizedOptions];
+
+				let maxConcurrentStreams = -1;
+				let currentStreamsCount = -1;
+				let optimalSession;
+
+				// We could just do this.sessions[normalizedOptions].find(...) but that isn't optimal.
+				// Additionally, we are looking for session which has biggest current pending streams count.
+				for (const session of sessions) {
+					const sessionMaxConcurrentStreams = session.remoteSettings.maxConcurrentStreams;
+
+					if (sessionMaxConcurrentStreams < maxConcurrentStreams) {
+						break;
+					}
+
+					if (session[kOriginSet].includes(normalizedOrigin)) {
+						const sessionCurrentStreamsCount = session[kCurrentStreamsCount];
+
+						if (
+							sessionCurrentStreamsCount >= sessionMaxConcurrentStreams ||
+							session[kGracefullyClosing] ||
+							// Unfortunately the `close` event isn't called immediately,
+							// so `session.destroyed` is `true`, but `session.closed` is `false`.
+							session.destroyed
+						) {
+							continue;
+						}
+
+						// We only need set this once.
+						if (!optimalSession) {
+							maxConcurrentStreams = sessionMaxConcurrentStreams;
+						}
+
+						// We're looking for the session which has biggest current pending stream count,
+						// in order to minimalize the amount of active sessions.
+						if (sessionCurrentStreamsCount > currentStreamsCount) {
+							optimalSession = session;
+							currentStreamsCount = sessionCurrentStreamsCount;
+						}
+					}
+				}
+
+				if (optimalSession) {
+					/* istanbul ignore next: safety check */
+					if (listeners.length !== 1) {
+						for (const {reject} of listeners) {
+							const error = new Error(
+								`Expected the length of listeners to be 1, got ${listeners.length}.\n` +
+								'Please report this to https://github.com/szmarczak/http2-wrapper/'
+							);
+
+							reject(error);
+						}
+
+						return;
+					}
+
+					listeners[0].resolve(optimalSession);
+					return;
+				}
+			}
+
+			if (normalizedOptions in this.queue) {
+				if (normalizedOrigin in this.queue[normalizedOptions]) {
+					// There's already an item in the queue, just attach ourselves to it.
+					this.queue[normalizedOptions][normalizedOrigin].listeners.push(...listeners);
+
+					// This shouldn't be executed here.
+					// See the comment inside _tryToCreateNewSession.
+					this._tryToCreateNewSession(normalizedOptions, normalizedOrigin);
+					return;
+				}
+			} else {
+				this.queue[normalizedOptions] = {};
+			}
+
+			// The entry must be removed from the queue IMMEDIATELY when:
+			// 1. the session connects successfully,
+			// 2. an error occurs.
+			const removeFromQueue = () => {
+				// Our entry can be replaced. We cannot remove the new one.
+				if (normalizedOptions in this.queue && this.queue[normalizedOptions][normalizedOrigin] === entry) {
+					delete this.queue[normalizedOptions][normalizedOrigin];
+
+					if (Object.keys(this.queue[normalizedOptions]).length === 0) {
+						delete this.queue[normalizedOptions];
+					}
+				}
+			};
+
+			// The main logic is here
+			const entry = () => {
+				const name = `${normalizedOrigin}:${normalizedOptions}`;
+				let receivedSettings = false;
+
+				try {
+					const session = http2.connect(origin, {
+						createConnection: this.createConnection,
+						settings: this.settings,
+						session: this.tlsSessionCache.get(name),
+						...options
+					});
+					session[kCurrentStreamsCount] = 0;
+					session[kGracefullyClosing] = false;
+
+					const isFree = () => session[kCurrentStreamsCount] < session.remoteSettings.maxConcurrentStreams;
+					let wasFree = true;
+
+					session.socket.once('session', tlsSession => {
+						this.tlsSessionCache.set(name, tlsSession);
+					});
+
+					session.once('error', error => {
+						// Listeners are empty when the session successfully connected.
+						for (const {reject} of listeners) {
+							reject(error);
+						}
+
+						// The connection got broken, purge the cache.
+						this.tlsSessionCache.delete(name);
+					});
+
+					session.setTimeout(this.timeout, () => {
+						// Terminates all streams owned by this session.
+						// TODO: Maybe the streams should have a "Session timed out" error?
+						session.destroy();
+					});
+
+					session.once('close', () => {
+						if (receivedSettings) {
+							// 1. If it wasn't free then no need to decrease because
+							//    it has been decreased already in session.request().
+							// 2. `stream.once('close')` won't increment the count
+							//    because the session is already closed.
+							if (wasFree) {
+								this._freeSessionsCount--;
+							}
+
+							this._sessionsCount--;
+
+							// This cannot be moved to the stream logic,
+							// because there may be a session that hadn't made a single request.
+							const where = this.sessions[normalizedOptions];
+							where.splice(where.indexOf(session), 1);
+
+							if (where.length === 0) {
+								delete this.sessions[normalizedOptions];
+							}
+						} else {
+							// Broken connection
+							const error = new Error('Session closed without receiving a SETTINGS frame');
+							error.code = 'HTTP2WRAPPER_NOSETTINGS';
+
+							for (const {reject} of listeners) {
+								reject(error);
+							}
+
+							removeFromQueue();
+						}
+
+						// There may be another session awaiting.
+						this._tryToCreateNewSession(normalizedOptions, normalizedOrigin);
+					});
+
+					// Iterates over the queue and processes listeners.
+					const processListeners = () => {
+						if (!(normalizedOptions in this.queue) || !isFree()) {
+							return;
+						}
+
+						for (const origin of session[kOriginSet]) {
+							if (origin in this.queue[normalizedOptions]) {
+								const {listeners} = this.queue[normalizedOptions][origin];
+
+								// Prevents session overloading.
+								while (listeners.length !== 0 && isFree()) {
+									// We assume `resolve(...)` calls `request(...)` *directly*,
+									// otherwise the session will get overloaded.
+									listeners.shift().resolve(session);
+								}
+
+								const where = this.queue[normalizedOptions];
+								if (where[origin].listeners.length === 0) {
+									delete where[origin];
+
+									if (Object.keys(where).length === 0) {
+										delete this.queue[normalizedOptions];
+										break;
+									}
+								}
+
+								// We're no longer free, no point in continuing.
+								if (!isFree()) {
+									break;
+								}
+							}
+						}
+					};
+
+					// The Origin Set cannot shrink. No need to check if it suddenly became covered by another one.
+					session.on('origin', () => {
+						session[kOriginSet] = session.originSet;
+
+						if (!isFree()) {
+							// The session is full.
+							return;
+						}
+
+						processListeners();
+
+						// Close covered sessions (if possible).
+						closeCoveredSessions(this.sessions[normalizedOptions], session);
+					});
+
+					session.once('remoteSettings', () => {
+						// Fix Node.js bug preventing the process from exiting
+						session.ref();
+						session.unref();
+
+						this._sessionsCount++;
+
+						// The Agent could have been destroyed already.
+						if (entry.destroyed) {
+							const error = new Error('Agent has been destroyed');
+
+							for (const listener of listeners) {
+								listener.reject(error);
+							}
+
+							session.destroy();
+							return;
+						}
+
+						session[kOriginSet] = session.originSet;
+
+						{
+							const where = this.sessions;
+
+							if (normalizedOptions in where) {
+								const sessions = where[normalizedOptions];
+								sessions.splice(getSortedIndex(sessions, session, compareSessions), 0, session);
+							} else {
+								where[normalizedOptions] = [session];
+							}
+						}
+
+						this._freeSessionsCount += 1;
+						receivedSettings = true;
+
+						this.emit('session', session);
+
+						processListeners();
+						removeFromQueue();
+
+						// TODO: Close last recently used (or least used?) session
+						if (session[kCurrentStreamsCount] === 0 && this._freeSessionsCount > this.maxFreeSessions) {
+							session.close();
+						}
+
+						// Check if we haven't managed to execute all listeners.
+						if (listeners.length !== 0) {
+							// Request for a new session with predefined listeners.
+							this.getSession(normalizedOrigin, options, listeners);
+							listeners.length = 0;
+						}
+
+						// `session.remoteSettings.maxConcurrentStreams` might get increased
+						session.on('remoteSettings', () => {
+							processListeners();
+
+							// In case the Origin Set changes
+							closeCoveredSessions(this.sessions[normalizedOptions], session);
+						});
+					});
+
+					// Shim `session.request()` in order to catch all streams
+					session[kRequest] = session.request;
+					session.request = (headers, streamOptions) => {
+						if (session[kGracefullyClosing]) {
+							throw new Error('The session is gracefully closing. No new streams are allowed.');
+						}
+
+						const stream = session[kRequest](headers, streamOptions);
+
+						// The process won't exit until the session is closed or all requests are gone.
+						session.ref();
+
+						++session[kCurrentStreamsCount];
+
+						if (session[kCurrentStreamsCount] === session.remoteSettings.maxConcurrentStreams) {
+							this._freeSessionsCount--;
+						}
+
+						stream.once('close', () => {
+							wasFree = isFree();
+
+							--session[kCurrentStreamsCount];
+
+							if (!session.destroyed && !session.closed) {
+								closeSessionIfCovered(this.sessions[normalizedOptions], session);
+
+								if (isFree() && !session.closed) {
+									if (!wasFree) {
+										this._freeSessionsCount++;
+
+										wasFree = true;
+									}
+
+									const isEmpty = session[kCurrentStreamsCount] === 0;
+
+									if (isEmpty) {
+										session.unref();
+									}
+
+									if (
+										isEmpty &&
+										(
+											this._freeSessionsCount > this.maxFreeSessions ||
+											session[kGracefullyClosing]
+										)
+									) {
+										session.close();
+									} else {
+										closeCoveredSessions(this.sessions[normalizedOptions], session);
+										processListeners();
+									}
+								}
+							}
+						});
+
+						return stream;
+					};
+				} catch (error) {
+					for (const listener of listeners) {
+						listener.reject(error);
+					}
+
+					removeFromQueue();
+				}
+			};
+
+			entry.listeners = listeners;
+			entry.completed = false;
+			entry.destroyed = false;
+
+			this.queue[normalizedOptions][normalizedOrigin] = entry;
+			this._tryToCreateNewSession(normalizedOptions, normalizedOrigin);
+		});
+	}
+
+	request(origin, options, headers, streamOptions) {
+		return new Promise((resolve, reject) => {
+			this.getSession(origin, options, [{
+				reject,
+				resolve: session => {
+					try {
+						resolve(session.request(headers, streamOptions));
+					} catch (error) {
+						reject(error);
+					}
+				}
+			}]);
+		});
+	}
+
+	createConnection(origin, options) {
+		return Agent.connect(origin, options);
+	}
+
+	static connect(origin, options) {
+		options.ALPNProtocols = ['h2'];
+
+		const port = origin.port || 443;
+		const host = origin.hostname || origin.host;
+
+		if (typeof options.servername === 'undefined') {
+			options.servername = host;
+		}
+
+		return tls.connect(port, host, options);
+	}
+
+	closeFreeSessions() {
+		for (const sessions of Object.values(this.sessions)) {
+			for (const session of sessions) {
+				if (session[kCurrentStreamsCount] === 0) {
+					session.close();
+				}
+			}
+		}
+	}
+
+	destroy(reason) {
+		for (const sessions of Object.values(this.sessions)) {
+			for (const session of sessions) {
+				session.destroy(reason);
+			}
+		}
+
+		for (const entriesOfAuthority of Object.values(this.queue)) {
+			for (const entry of Object.values(entriesOfAuthority)) {
+				entry.destroyed = true;
+			}
+		}
+
+		// New requests should NOT attach to destroyed sessions
+		this.queue = {};
+	}
+
+	get freeSessions() {
+		return getSessions({agent: this, isFree: true});
+	}
+
+	get busySessions() {
+		return getSessions({agent: this, isFree: false});
+	}
+}
+
+Agent.kCurrentStreamsCount = kCurrentStreamsCount;
+Agent.kGracefullyClosing = kGracefullyClosing;
+
+module.exports = {
+	Agent,
+	globalAgent: new Agent()
+};
diff --git a/node_modules/http2-wrapper/source/auto.js b/node_modules/http2-wrapper/source/auto.js
new file mode 100644
index 0000000..af4e9ba
--- /dev/null
+++ b/node_modules/http2-wrapper/source/auto.js
@@ -0,0 +1,149 @@
+'use strict';
+const http = require('http');
+const https = require('https');
+const resolveALPN = require('resolve-alpn');
+const QuickLRU = require('quick-lru');
+const Http2ClientRequest = require('./client-request');
+const calculateServerName = require('./utils/calculate-server-name');
+const urlToOptions = require('./utils/url-to-options');
+
+const cache = new QuickLRU({maxSize: 100});
+const queue = new Map();
+
+const installSocket = (agent, socket, options) => {
+	socket._httpMessage = {shouldKeepAlive: true};
+
+	const onFree = () => {
+		agent.emit('free', socket, options);
+	};
+
+	socket.on('free', onFree);
+
+	const onClose = () => {
+		agent.removeSocket(socket, options);
+	};
+
+	socket.on('close', onClose);
+
+	const onRemove = () => {
+		agent.removeSocket(socket, options);
+		socket.off('close', onClose);
+		socket.off('free', onFree);
+		socket.off('agentRemove', onRemove);
+	};
+
+	socket.on('agentRemove', onRemove);
+
+	agent.emit('free', socket, options);
+};
+
+const resolveProtocol = async options => {
+	const name = `${options.host}:${options.port}:${options.ALPNProtocols.sort()}`;
+
+	if (!cache.has(name)) {
+		if (queue.has(name)) {
+			const result = await queue.get(name);
+			return result.alpnProtocol;
+		}
+
+		const {path, agent} = options;
+		options.path = options.socketPath;
+
+		const resultPromise = resolveALPN(options);
+		queue.set(name, resultPromise);
+
+		try {
+			const {socket, alpnProtocol} = await resultPromise;
+			cache.set(name, alpnProtocol);
+
+			options.path = path;
+
+			if (alpnProtocol === 'h2') {
+				// https://github.com/nodejs/node/issues/33343
+				socket.destroy();
+			} else {
+				const {globalAgent} = https;
+				const defaultCreateConnection = https.Agent.prototype.createConnection;
+
+				if (agent) {
+					if (agent.createConnection === defaultCreateConnection) {
+						installSocket(agent, socket, options);
+					} else {
+						socket.destroy();
+					}
+				} else if (globalAgent.createConnection === defaultCreateConnection) {
+					installSocket(globalAgent, socket, options);
+				} else {
+					socket.destroy();
+				}
+			}
+
+			queue.delete(name);
+
+			return alpnProtocol;
+		} catch (error) {
+			queue.delete(name);
+
+			throw error;
+		}
+	}
+
+	return cache.get(name);
+};
+
+module.exports = async (input, options, callback) => {
+	if (typeof input === 'string' || input instanceof URL) {
+		input = urlToOptions(new URL(input));
+	}
+
+	if (typeof options === 'function') {
+		callback = options;
+		options = undefined;
+	}
+
+	options = {
+		ALPNProtocols: ['h2', 'http/1.1'],
+		...input,
+		...options,
+		resolveSocket: true
+	};
+
+	if (!Array.isArray(options.ALPNProtocols) || options.ALPNProtocols.length === 0) {
+		throw new Error('The `ALPNProtocols` option must be an Array with at least one entry');
+	}
+
+	options.protocol = options.protocol || 'https:';
+	const isHttps = options.protocol === 'https:';
+
+	options.host = options.hostname || options.host || 'localhost';
+	options.session = options.tlsSession;
+	options.servername = options.servername || calculateServerName(options);
+	options.port = options.port || (isHttps ? 443 : 80);
+	options._defaultAgent = isHttps ? https.globalAgent : http.globalAgent;
+
+	const agents = options.agent;
+
+	if (agents) {
+		if (agents.addRequest) {
+			throw new Error('The `options.agent` object can contain only `http`, `https` or `http2` properties');
+		}
+
+		options.agent = agents[isHttps ? 'https' : 'http'];
+	}
+
+	if (isHttps) {
+		const protocol = await resolveProtocol(options);
+
+		if (protocol === 'h2') {
+			if (agents) {
+				options.agent = agents.http2;
+			}
+
+			return new Http2ClientRequest(options, callback);
+		}
+	}
+
+	return http.request(options, callback);
+};
+
+module.exports.protocolCache = cache;
diff --git a/node_modules/http2-wrapper/source/client-request.js b/node_modules/http2-wrapper/source/client-request.js
new file mode 100644
index 0000000..b712967
--- /dev/null
+++ b/node_modules/http2-wrapper/source/client-request.js
@@ -0,0 +1,445 @@
+'use strict';
+const http2 = require('http2');
+const {Writable} = require('stream');
+const {Agent, globalAgent} = require('./agent');
+const IncomingMessage = require('./incoming-message');
+const urlToOptions = require('./utils/url-to-options');
+const proxyEvents = require('./utils/proxy-events');
+const isRequestPseudoHeader = require('./utils/is-request-pseudo-header');
+const {
+	ERR_INVALID_ARG_TYPE,
+	ERR_INVALID_PROTOCOL,
+	ERR_HTTP_HEADERS_SENT,
+	ERR_INVALID_HTTP_TOKEN,
+	ERR_HTTP_INVALID_HEADER_VALUE,
+	ERR_INVALID_CHAR
+} = require('./utils/errors');
+
+const {
+	HTTP2_HEADER_STATUS,
+	HTTP2_HEADER_METHOD,
+	HTTP2_HEADER_PATH,
+	HTTP2_METHOD_CONNECT
+} = http2.constants;
+
+const kHeaders = Symbol('headers');
+const kOrigin = Symbol('origin');
+const kSession = Symbol('session');
+const kOptions = Symbol('options');
+const kFlushedHeaders = Symbol('flushedHeaders');
+const kJobs = Symbol('jobs');
+
+const isValidHttpToken = /^[\^`\-\w!#$%&*+.|~]+$/;
+const isInvalidHeaderValue = /[^\t\u0020-\u007E\u0080-\u00FF]/;
+
+class ClientRequest extends Writable {
+	constructor(input, options, callback) {
+		super({
+			autoDestroy: false
+		});
+
+		const hasInput = typeof input === 'string' || input instanceof URL;
+		if (hasInput) {
+			input = urlToOptions(input instanceof URL ? input : new URL(input));
+		}
+
+		if (typeof options === 'function' || options === undefined) {
+			// (options, callback)
+			callback = options;
+			options = hasInput ? input : {...input};
+		} else {
+			// (input, options, callback)
+			options = {...input, ...options};
+		}
+
+		if (options.h2session) {
+			this[kSession] = options.h2session;
+		} else if (options.agent === false) {
+			this.agent = new Agent({maxFreeSessions: 0});
+		} else if (typeof options.agent === 'undefined' || options.agent === null) {
+			if (typeof options.createConnection === 'function') {
+				// This is a workaround - we don't have to create the session on our own.
+				this.agent = new Agent({maxFreeSessions: 0});
+				this.agent.createConnection = options.createConnection;
+			} else {
+				this.agent = globalAgent;
+			}
+		} else if (typeof options.agent.request === 'function') {
+			this.agent = options.agent;
+		} else {
+			throw new ERR_INVALID_ARG_TYPE('options.agent', ['Agent-like Object', 'undefined', 'false'], options.agent);
+		}
+
+		if (options.protocol && options.protocol !== 'https:') {
+			throw new ERR_INVALID_PROTOCOL(options.protocol, 'https:');
+		}
+
+		const port = options.port || options.defaultPort || (this.agent && this.agent.defaultPort) || 443;
+		const host = options.hostname || options.host || 'localhost';
+
+		// Don't enforce the origin via options. It may be changed in an Agent.
+		delete options.hostname;
+		delete options.host;
+		delete options.port;
+
+		const {timeout} = options;
+		options.timeout = undefined;
+
+		this[kHeaders] = Object.create(null);
+		this[kJobs] = [];
+
+		this.socket = null;
+		this.connection = null;
+
+		this.method = options.method || 'GET';
+		this.path = options.path;
+
+		this.res = null;
+		this.aborted = false;
+		this.reusedSocket = false;
+
+		if (options.headers) {
+			for (const [header, value] of Object.entries(options.headers)) {
+				this.setHeader(header, value);
+			}
+		}
+
+		if (options.auth && !('authorization' in this[kHeaders])) {
+			this[kHeaders].authorization = 'Basic ' + Buffer.from(options.auth).toString('base64');
+		}
+
+		options.session = options.tlsSession;
+		options.path = options.socketPath;
+
+		this[kOptions] = options;
+
+		// Clients that generate HTTP/2 requests directly SHOULD use the :authority pseudo-header field instead of the Host header field.
+		if (port === 443) {
+			this[kOrigin] = `https://${host}`;
+
+			if (!(':authority' in this[kHeaders])) {
+				this[kHeaders][':authority'] = host;
+			}
+		} else {
+			this[kOrigin] = `https://${host}:${port}`;
+
+			if (!(':authority' in this[kHeaders])) {
+				this[kHeaders][':authority'] = `${host}:${port}`;
+			}
+		}
+
+		if (timeout) {
+			this.setTimeout(timeout);
+		}
+
+		if (callback) {
+			this.once('response', callback);
+		}
+
+		this[kFlushedHeaders] = false;
+	}
+
+	get method() {
+		return this[kHeaders][HTTP2_HEADER_METHOD];
+	}
+
+	set method(value) {
+		if (value) {
+			this[kHeaders][HTTP2_HEADER_METHOD] = value.toUpperCase();
+		}
+	}
+
+	get path() {
+		return this[kHeaders][HTTP2_HEADER_PATH];
+	}
+
+	set path(value) {
+		if (value) {
+			this[kHeaders][HTTP2_HEADER_PATH] = value;
+		}
+	}
+
+	get _mustNotHaveABody() {
+		return this.method === 'GET' || this.method === 'HEAD' || this.method === 'DELETE';
+	}
+
+	_write(chunk, encoding, callback) {
+		// https://github.com/nodejs/node/blob/654df09ae0c5e17d1b52a900a545f0664d8c7627/lib/internal/http2/util.js#L148-L156
+		if (this._mustNotHaveABody) {
+			callback(new Error('The GET, HEAD and DELETE methods must NOT have a body'));
+			/* istanbul ignore next: Node.js 12 throws directly */
+			return;
+		}
+
+		this.flushHeaders();
+
+		const callWrite = () => this._request.write(chunk, encoding, callback);
+		if (this._request) {
+			callWrite();
+		} else {
+			this[kJobs].push(callWrite);
+		}
+	}
+
+	_final(callback) {
+		if (this.destroyed) {
+			return;
+		}
+
+		this.flushHeaders();
+
+		const callEnd = () => {
+			// For GET, HEAD and DELETE
+			if (this._mustNotHaveABody) {
+				callback();
+				return;
+			}
+
+			this._request.end(callback);
+		};
+
+		if (this._request) {
+			callEnd();
+		} else {
+			this[kJobs].push(callEnd);
+		}
+	}
+
+	abort() {
+		if (this.res && this.res.complete) {
+			return;
+		}
+
+		if (!this.aborted) {
+			process.nextTick(() => this.emit('abort'));
+		}
+
+		this.aborted = true;
+
+		this.destroy();
+	}
+
+	_destroy(error, callback) {
+		if (this.res) {
+			this.res._dump();
+		}
+
+		if (this._request) {
+			this._request.destroy();
+		}
+
+		callback(error);
+	}
+
+	async flushHeaders() {
+		if (this[kFlushedHeaders] || this.destroyed) {
+			return;
+		}
+
+		this[kFlushedHeaders] = true;
+
+		const isConnectMethod = this.method === HTTP2_METHOD_CONNECT;
+
+		// The real magic is here
+		const onStream = stream => {
+			this._request = stream;
+
+			if (this.destroyed) {
+				stream.destroy();
+				return;
+			}
+
+			// Forwards `timeout`, `continue`, `close` and `error` events to this instance.
+			if (!isConnectMethod) {
+				proxyEvents(stream, this, ['timeout', 'continue', 'close', 'error']);
+			}
+
+			// Wait for the `finish` event. We don't want to emit the `response` event
+			// before `request.end()` is called.
+			const waitForEnd = fn => {
+				return (...args) => {
+					if (!this.writable && !this.destroyed) {
+						fn(...args);
+					} else {
+						this.once('finish', () => {
+							fn(...args);
+						});
+					}
+				};
+			};
+
+			// This event tells we are ready to listen for the data.
+			stream.once('response', waitForEnd((headers, flags, rawHeaders) => {
+				// If we were to emit raw request stream, it would be as fast as the native approach.
+				// Note that wrapping the raw stream in a Proxy instance won't improve the performance (already tested it).
+				const response = new IncomingMessage(this.socket, stream.readableHighWaterMark);
+				this.res = response;
+
+				response.req = this;
+				response.statusCode = headers[HTTP2_HEADER_STATUS];
+				response.headers = headers;
+				response.rawHeaders = rawHeaders;
+
+				response.once('end', () => {
+					if (this.aborted) {
+						response.aborted = true;
+						response.emit('aborted');
+					} else {
+						response.complete = true;
+
+						// Has no effect, just be consistent with the Node.js behavior
+						response.socket = null;
+						response.connection = null;
+					}
+				});
+
+				if (isConnectMethod) {
+					response.upgrade = true;
+
+					// The HTTP1 API says the socket is detached here,
+					// but we can't do that so we pass the original HTTP2 request.
+					if (this.emit('connect', response, stream, Buffer.alloc(0))) {
+						this.emit('close');
+					} else {
+						// No listeners attached, destroy the original request.
+						stream.destroy();
+					}
+				} else {
+					// Forwards data
+					stream.on('data', chunk => {
+						if (!response._dumped && !response.push(chunk)) {
+							stream.pause();
+						}
+					});
+
+					stream.once('end', () => {
+						response.push(null);
+					});
+
+					if (!this.emit('response', response)) {
+						// No listeners attached, dump the response.
+						response._dump();
+					}
+				}
+			}));
+
+			// Emits `information` event
+			stream.once('headers', waitForEnd(
+				headers => this.emit('information', {statusCode: headers[HTTP2_HEADER_STATUS]})
+			));
+
+			stream.once('trailers', waitForEnd((trailers, flags, rawTrailers) => {
+				const {res} = this;
+
+				// Assigns trailers to the response object.
+				res.trailers = trailers;
+				res.rawTrailers = rawTrailers;
+			}));
+
+			const {socket} = stream.session;
+			this.socket = socket;
+			this.connection = socket;
+
+			for (const job of this[kJobs]) {
+				job();
+			}
+
+			this.emit('socket', this.socket);
+		};
+
+		// Makes a HTTP2 request
+		if (this[kSession]) {
+			try {
+				onStream(this[kSession].request(this[kHeaders]));
+			} catch (error) {
+				this.emit('error', error);
+			}
+		} else {
+			this.reusedSocket = true;
+
+			try {
+				onStream(await this.agent.request(this[kOrigin], this[kOptions], this[kHeaders]));
+			} catch (error) {
+				this.emit('error', error);
+			}
+		}
+	}
+
+	getHeader(name) {
+		if (typeof name !== 'string') {
+			throw new ERR_INVALID_ARG_TYPE('name', 'string', name);
+		}
+
+		return this[kHeaders][name.toLowerCase()];
+	}
+
+	get headersSent() {
+		return this[kFlushedHeaders];
+	}
+
+	removeHeader(name) {
+		if (typeof name !== 'string') {
+			throw new ERR_INVALID_ARG_TYPE('name', 'string', name);
+		}
+
+		if (this.headersSent) {
+			throw new ERR_HTTP_HEADERS_SENT('remove');
+		}
+
+		delete this[kHeaders][name.toLowerCase()];
+	}
+
+	setHeader(name, value) {
+		if (this.headersSent) {
+			throw new ERR_HTTP_HEADERS_SENT('set');
+		}
+
+		if (typeof name !== 'string' || (!isValidHttpToken.test(name) && !isRequestPseudoHeader(name))) {
+			throw new ERR_INVALID_HTTP_TOKEN('Header name', name);
+		}
+
+		if (typeof value === 'undefined') {
+			throw new ERR_HTTP_INVALID_HEADER_VALUE(value, name);
+		}
+
+		if (isInvalidHeaderValue.test(value)) {
+			throw new ERR_INVALID_CHAR('header content', name);
+		}
+
+		this[kHeaders][name.toLowerCase()] = value;
+	}
+
+	setNoDelay() {
+		// HTTP2 sockets cannot be malformed, do nothing.
+	}
+
+	setSocketKeepAlive() {
+		// HTTP2 sockets cannot be malformed, do nothing.
+	}
+
+	setTimeout(ms, callback) {
+		const applyTimeout = () => this._request.setTimeout(ms, callback);
+
+		if (this._request) {
+			applyTimeout();
+		} else {
+			this[kJobs].push(applyTimeout);
+		}
+
+		return this;
+	}
+
+	get maxHeadersCount() {
+		if (!this.destroyed && this._request) {
+			return this._request.session.localSettings.maxHeaderListSize;
+		}
+
+		return undefined;
+	}
+
+	set maxHeadersCount(_value) {
+		// Updating HTTP2 settings would affect all requests, do nothing.
+	}
+}
+
+module.exports = ClientRequest;
diff --git a/node_modules/http2-wrapper/source/incoming-message.js b/node_modules/http2-wrapper/source/incoming-message.js
new file mode 100644
index 0000000..7d5c0d3
--- /dev/null
+++ b/node_modules/http2-wrapper/source/incoming-message.js
@@ -0,0 +1,58 @@
+'use strict';
+const {Readable} = require('stream');
+
+class IncomingMessage extends Readable {
+	constructor(socket, highWaterMark) {
+		super({
+			highWaterMark,
+			autoDestroy: false
+		});
+
+		this.statusCode = null;
+		this.statusMessage = '';
+		this.httpVersion = '2.0';
+		this.httpVersionMajor = 2;
+		this.httpVersionMinor = 0;
+		this.headers = {};
+		this.trailers = {};
+		this.req = null;
+
+		this.aborted = false;
+		this.complete = false;
+		this.upgrade = null;
+
+		this.rawHeaders = [];
+		this.rawTrailers = [];
+
+		this.socket = socket;
+		this.connection = socket;
+
+		this._dumped = false;
+	}
+
+	_destroy(error) {
+		this.req._request.destroy(error);
+	}
+
+	setTimeout(ms, callback) {
+		this.req.setTimeout(ms, callback);
+		return this;
+	}
+
+	_dump() {
+		if (!this._dumped) {
+			this._dumped = true;
+
+			this.removeAllListeners('data');
+			this.resume();
+		}
+	}
+
+	_read() {
+		if (this.req) {
+			this.req._request.resume();
+		}
+	}
+}
+
+module.exports = IncomingMessage;
diff --git a/node_modules/http2-wrapper/source/index.js b/node_modules/http2-wrapper/source/index.js
new file mode 100644
index 0000000..fb83349
--- /dev/null
+++ b/node_modules/http2-wrapper/source/index.js
@@ -0,0 +1,28 @@
+'use strict';
+const http2 = require('http2');
+const agent = require('./agent');
+const ClientRequest = require('./client-request');
+const IncomingMessage = require('./incoming-message');
+const auto = require('./auto');
+
+const request = (url, options, callback) => {
+	return new ClientRequest(url, options, callback);
+};
+
+const get = (url, options, callback) => {
+	// eslint-disable-next-line unicorn/prevent-abbreviations
+	const req = new ClientRequest(url, options, callback);
+	req.end();
+
+	return req;
+};
+
+module.exports = {
+	...http2,
+	ClientRequest,
+	IncomingMessage,
+	...agent,
+	request,
+	get,
+	auto
+};
diff --git a/node_modules/http2-wrapper/source/utils/calculate-server-name.js b/node_modules/http2-wrapper/source/utils/calculate-server-name.js
new file mode 100644
index 0000000..b05c099
--- /dev/null
+++ b/node_modules/http2-wrapper/source/utils/calculate-server-name.js
@@ -0,0 +1,27 @@
+'use strict';
+const net = require('net');
+/* istanbul ignore file: https://github.com/nodejs/node/blob/v13.0.1/lib/_http_agent.js */
+
+module.exports = options => {
+	let servername = options.host;
+	const hostHeader = options.headers && options.headers.host;
+
+	if (hostHeader) {
+		if (hostHeader.startsWith('[')) {
+			const index = hostHeader.indexOf(']');
+			if (index === -1) {
+				servername = hostHeader;
+			} else {
+				servername = hostHeader.slice(1, -1);
+			}
+		} else {
+			servername = hostHeader.split(':', 1)[0];
+		}
+	}
+
+	if (net.isIP(servername)) {
+		return '';
+	}
+
+	return servername;
+};
diff --git a/node_modules/http2-wrapper/source/utils/errors.js b/node_modules/http2-wrapper/source/utils/errors.js
new file mode 100644
index 0000000..5018283
--- /dev/null
+++ b/node_modules/http2-wrapper/source/utils/errors.js
@@ -0,0 +1,45 @@
+'use strict';
+/* istanbul ignore file: https://github.com/nodejs/node/blob/master/lib/internal/errors.js */
+
+const makeError = (Base, key, getMessage) => {
+	module.exports[key] = class NodeError extends Base {
+		constructor(...args) {
+			super(typeof getMessage === 'string' ? getMessage : getMessage(args));
+			this.name = `${super.name} [${key}]`;
+			this.code = key;
+		}
+	};
+};
+
+makeError(TypeError, 'ERR_INVALID_ARG_TYPE', args => {
+	const type = args[0].includes('.') ? 'property' : 'argument';
+
+	let valid = args[1];
+	const isManyTypes = Array.isArray(valid);
+
+	if (isManyTypes) {
+		valid = `${valid.slice(0, -1).join(', ')} or ${valid.slice(-1)}`;
+	}
+
+	return `The "${args[0]}" ${type} must be ${isManyTypes ? 'one of' : 'of'} type ${valid}. Received ${typeof args[2]}`;
+});
+
+makeError(TypeError, 'ERR_INVALID_PROTOCOL', args => {
+	return `Protocol "${args[0]}" not supported. Expected "${args[1]}"`;
+});
+
+makeError(Error, 'ERR_HTTP_HEADERS_SENT', args => {
+	return `Cannot ${args[0]} headers after they are sent to the client`;
+});
+
+makeError(TypeError, 'ERR_INVALID_HTTP_TOKEN', args => {
+	return `${args[0]} must be a valid HTTP token [${args[1]}]`;
+});
+
+makeError(TypeError, 'ERR_HTTP_INVALID_HEADER_VALUE', args => {
+	return `Invalid value "${args[0]} for header "${args[1]}"`;
+});
+
+makeError(TypeError, 'ERR_INVALID_CHAR', args => {
+	return `Invalid character in ${args[0]} [${args[1]}]`;
+});
diff --git a/node_modules/http2-wrapper/source/utils/is-request-pseudo-header.js b/node_modules/http2-wrapper/source/utils/is-request-pseudo-header.js
new file mode 100644
index 0000000..bed31cd
--- /dev/null
+++ b/node_modules/http2-wrapper/source/utils/is-request-pseudo-header.js
@@ -0,0 +1,13 @@
+'use strict';
+
+module.exports = header => {
+	switch (header) {
+		case ':method':
+		case ':scheme':
+		case ':authority':
+		case ':path':
+			return true;
+		default:
+			return false;
+	}
+};
diff --git a/node_modules/http2-wrapper/source/utils/proxy-events.js b/node_modules/http2-wrapper/source/utils/proxy-events.js
new file mode 100644
index 0000000..35e2ae0
--- /dev/null
+++ b/node_modules/http2-wrapper/source/utils/proxy-events.js
@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = (from, to, events) => {
+	for (const event of events) {
+		from.on(event, (...args) => to.emit(event, ...args));
+	}
+};
diff --git a/node_modules/http2-wrapper/source/utils/url-to-options.js b/node_modules/http2-wrapper/source/utils/url-to-options.js
new file mode 100644
index 0000000..36d1580
--- /dev/null
+++ b/node_modules/http2-wrapper/source/utils/url-to-options.js
@@ -0,0 +1,25 @@
+'use strict';
+/* istanbul ignore file: https://github.com/nodejs/node/blob/a91293d4d9ab403046ab5eb022332e4e3d249bd3/lib/internal/url.js#L1257 */
+
+module.exports = url => {
+	const options = {
+		protocol: url.protocol,
+		hostname: typeof url.hostname === 'string' && url.hostname.startsWith('[') ? url.hostname.slice(1, -1) : url.hostname,
+		host: url.host,
+		hash: url.hash,
+		search: url.search,
+		pathname: url.pathname,
+		href: url.href,
+		path: `${url.pathname || ''}${url.search || ''}`
+	};
+
+	if (typeof url.port === 'string' && url.port.length !== 0) {
+		options.port = Number(url.port);
+	}
+
+	if (url.username || url.password) {
+		options.auth = `${url.username || ''}:${url.password || ''}`;
+	}
+
+	return options;
+};