index.d.ts 0000664 00000006175 15111325205 0006453 0 ustar 00 ///
import net from 'net';
import http from 'http';
import https from 'https';
import { Duplex } from 'stream';
import { EventEmitter } from 'events';
declare function createAgent(opts?: createAgent.AgentOptions): createAgent.Agent;
declare function createAgent(callback: createAgent.AgentCallback, opts?: createAgent.AgentOptions): createAgent.Agent;
declare namespace createAgent {
interface ClientRequest extends http.ClientRequest {
_last?: boolean;
_hadError?: boolean;
method: string;
}
interface AgentRequestOptions {
host?: string;
path?: string;
port: number;
}
interface HttpRequestOptions extends AgentRequestOptions, Omit {
secureEndpoint: false;
}
interface HttpsRequestOptions extends AgentRequestOptions, Omit {
secureEndpoint: true;
}
type RequestOptions = HttpRequestOptions | HttpsRequestOptions;
type AgentLike = Pick | http.Agent;
type AgentCallbackReturn = Duplex | AgentLike;
type AgentCallbackCallback = (err?: Error | null, socket?: createAgent.AgentCallbackReturn) => void;
type AgentCallbackPromise = (req: createAgent.ClientRequest, opts: createAgent.RequestOptions) => createAgent.AgentCallbackReturn | Promise;
type AgentCallback = typeof Agent.prototype.callback;
type AgentOptions = {
timeout?: number;
};
/**
* Base `http.Agent` implementation.
* No pooling/keep-alive is implemented by default.
*
* @param {Function} callback
* @api public
*/
class Agent extends EventEmitter {
timeout: number | null;
maxFreeSockets: number;
maxTotalSockets: number;
maxSockets: number;
sockets: {
[key: string]: net.Socket[];
};
freeSockets: {
[key: string]: net.Socket[];
};
requests: {
[key: string]: http.IncomingMessage[];
};
options: https.AgentOptions;
private promisifiedCallback?;
private explicitDefaultPort?;
private explicitProtocol?;
constructor(callback?: createAgent.AgentCallback | createAgent.AgentOptions, _opts?: createAgent.AgentOptions);
get defaultPort(): number;
set defaultPort(v: number);
get protocol(): string;
set protocol(v: string);
callback(req: createAgent.ClientRequest, opts: createAgent.RequestOptions, fn: createAgent.AgentCallbackCallback): void;
callback(req: createAgent.ClientRequest, opts: createAgent.RequestOptions): createAgent.AgentCallbackReturn | Promise;
/**
* Called by node-core's "_http_client.js" module when creating
* a new HTTP request with this Agent instance.
*
* @api public
*/
addRequest(req: ClientRequest, _opts: RequestOptions): void;
freeSocket(socket: net.Socket, opts: AgentOptions): void;
destroy(): void;
}
}
export = createAgent;
index.js 0000664 00000017346 15111325205 0006221 0 ustar 00 "use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
const events_1 = require("events");
const debug_1 = __importDefault(require("debug"));
const promisify_1 = __importDefault(require("./promisify"));
const debug = debug_1.default('agent-base');
function isAgent(v) {
return Boolean(v) && typeof v.addRequest === 'function';
}
function isSecureEndpoint() {
const { stack } = new Error();
if (typeof stack !== 'string')
return false;
return stack.split('\n').some(l => l.indexOf('(https.js:') !== -1 || l.indexOf('node:https:') !== -1);
}
function createAgent(callback, opts) {
return new createAgent.Agent(callback, opts);
}
(function (createAgent) {
/**
* Base `http.Agent` implementation.
* No pooling/keep-alive is implemented by default.
*
* @param {Function} callback
* @api public
*/
class Agent extends events_1.EventEmitter {
constructor(callback, _opts) {
super();
let opts = _opts;
if (typeof callback === 'function') {
this.callback = callback;
}
else if (callback) {
opts = callback;
}
// Timeout for the socket to be returned from the callback
this.timeout = null;
if (opts && typeof opts.timeout === 'number') {
this.timeout = opts.timeout;
}
// These aren't actually used by `agent-base`, but are required
// for the TypeScript definition files in `@types/node` :/
this.maxFreeSockets = 1;
this.maxSockets = 1;
this.maxTotalSockets = Infinity;
this.sockets = {};
this.freeSockets = {};
this.requests = {};
this.options = {};
}
get defaultPort() {
if (typeof this.explicitDefaultPort === 'number') {
return this.explicitDefaultPort;
}
return isSecureEndpoint() ? 443 : 80;
}
set defaultPort(v) {
this.explicitDefaultPort = v;
}
get protocol() {
if (typeof this.explicitProtocol === 'string') {
return this.explicitProtocol;
}
return isSecureEndpoint() ? 'https:' : 'http:';
}
set protocol(v) {
this.explicitProtocol = v;
}
callback(req, opts, fn) {
throw new Error('"agent-base" has no default implementation, you must subclass and override `callback()`');
}
/**
* Called by node-core's "_http_client.js" module when creating
* a new HTTP request with this Agent instance.
*
* @api public
*/
addRequest(req, _opts) {
const opts = Object.assign({}, _opts);
if (typeof opts.secureEndpoint !== 'boolean') {
opts.secureEndpoint = isSecureEndpoint();
}
if (opts.host == null) {
opts.host = 'localhost';
}
if (opts.port == null) {
opts.port = opts.secureEndpoint ? 443 : 80;
}
if (opts.protocol == null) {
opts.protocol = opts.secureEndpoint ? 'https:' : 'http:';
}
if (opts.host && opts.path) {
// If both a `host` and `path` are specified then it's most
// likely the result of a `url.parse()` call... we need to
// remove the `path` portion so that `net.connect()` doesn't
// attempt to open that as a unix socket file.
delete opts.path;
}
delete opts.agent;
delete opts.hostname;
delete opts._defaultAgent;
delete opts.defaultPort;
delete opts.createConnection;
// Hint to use "Connection: close"
// XXX: non-documented `http` module API :(
req._last = true;
req.shouldKeepAlive = false;
let timedOut = false;
let timeoutId = null;
const timeoutMs = opts.timeout || this.timeout;
const onerror = (err) => {
if (req._hadError)
return;
req.emit('error', err);
// For Safety. Some additional errors might fire later on
// and we need to make sure we don't double-fire the error event.
req._hadError = true;
};
const ontimeout = () => {
timeoutId = null;
timedOut = true;
const err = new Error(`A "socket" was not created for HTTP request before ${timeoutMs}ms`);
err.code = 'ETIMEOUT';
onerror(err);
};
const callbackError = (err) => {
if (timedOut)
return;
if (timeoutId !== null) {
clearTimeout(timeoutId);
timeoutId = null;
}
onerror(err);
};
const onsocket = (socket) => {
if (timedOut)
return;
if (timeoutId != null) {
clearTimeout(timeoutId);
timeoutId = null;
}
if (isAgent(socket)) {
// `socket` is actually an `http.Agent` instance, so
// relinquish responsibility for this `req` to the Agent
// from here on
debug('Callback returned another Agent instance %o', socket.constructor.name);
socket.addRequest(req, opts);
return;
}
if (socket) {
socket.once('free', () => {
this.freeSocket(socket, opts);
});
req.onSocket(socket);
return;
}
const err = new Error(`no Duplex stream was returned to agent-base for \`${req.method} ${req.path}\``);
onerror(err);
};
if (typeof this.callback !== 'function') {
onerror(new Error('`callback` is not defined'));
return;
}
if (!this.promisifiedCallback) {
if (this.callback.length >= 3) {
debug('Converting legacy callback function to promise');
this.promisifiedCallback = promisify_1.default(this.callback);
}
else {
this.promisifiedCallback = this.callback;
}
}
if (typeof timeoutMs === 'number' && timeoutMs > 0) {
timeoutId = setTimeout(ontimeout, timeoutMs);
}
if ('port' in opts && typeof opts.port !== 'number') {
opts.port = Number(opts.port);
}
try {
debug('Resolving socket for %o request: %o', opts.protocol, `${req.method} ${req.path}`);
Promise.resolve(this.promisifiedCallback(req, opts)).then(onsocket, callbackError);
}
catch (err) {
Promise.reject(err).catch(callbackError);
}
}
freeSocket(socket, opts) {
debug('Freeing socket %o %o', socket.constructor.name, opts);
socket.destroy();
}
destroy() {
debug('Destroying agent %o', this.constructor.name);
}
}
createAgent.Agent = Agent;
// So that `instanceof` works correctly
createAgent.prototype = createAgent.Agent.prototype;
})(createAgent || (createAgent = {}));
module.exports = createAgent;
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promisify.d.ts 0000664 00000000453 15111325205 0007356 0 ustar 00 import { ClientRequest, RequestOptions, AgentCallbackCallback, AgentCallbackPromise } from './index';
declare type LegacyCallback = (req: ClientRequest, opts: RequestOptions, fn: AgentCallbackCallback) => void;
export default function promisify(fn: LegacyCallback): AgentCallbackPromise;
export {};
promisify.js 0000664 00000000757 15111325205 0007131 0 ustar 00 "use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function promisify(fn) {
return function (req, opts) {
return new Promise((resolve, reject) => {
fn.call(this, req, opts, (err, rtn) => {
if (err) {
reject(err);
}
else {
resolve(rtn);
}
});
});
};
}
exports.default = promisify;
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