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3.5.2 / 2018-10-19
==================
**fixes**
* [[`5751fc1`](http://github.com/node-modules/agentkeepalive/commit/5751fc1180ed6544602c681ffbd08ca66a0cb12c)] - fix: sockLen being miscalculated when removing sockets (#60) (Ehden Sinai <<cixel@users.noreply.github.com>>)
3.5.1 / 2018-07-31
==================
**fixes**
* [[`495f1ab`](http://github.com/node-modules/agentkeepalive/commit/495f1ab625d43945d72f68096b97db723d4f0657)] - fix: add the lost npm files (#66) (Henry Zhuang <<zhuanghengfei@gmail.com>>)
3.5.0 / 2018-07-31
==================
**features**
* [[`16f5aea`](http://github.com/node-modules/agentkeepalive/commit/16f5aeadfda57f1c602652f1472a63cc83cd05bf)] - feat: add typing define. (#65) (Henry Zhuang <<zhuanghengfei@gmail.com>>)
**others**
* [[`28fa062`](http://github.com/node-modules/agentkeepalive/commit/28fa06246fb5103f88ebeeb8563757a9078b8157)] - docs: add "per host" to description of maxFreeSockets (tony-gutierrez <<tony.gutierrez@bluefletch.com>>)
* [[`7df2577`](http://github.com/node-modules/agentkeepalive/commit/7df25774f00a1031ca4daad2878a17e0539072a2)] - test: run test on node 10 (#63) (fengmk2 <<fengmk2@gmail.com>>)
3.4.1 / 2018-03-08
==================
**fixes**
* [[`4d3a3b1`](http://github.com/node-modules/agentkeepalive/commit/4d3a3b1f7b16595febbbd39eeed72b2663549014)] - fix: Handle ipv6 addresses in host-header correctly with TLS (#53) (Mattias Holmlund <<u376@m1.holmlund.se>>)
**others**
* [[`55a7a5c`](http://github.com/node-modules/agentkeepalive/commit/55a7a5cd33e97f9a8370083dcb041c5552f10ac9)] - test: stop timer after test end (fengmk2 <<fengmk2@gmail.com>>)
3.4.0 / 2018-02-27
==================
**features**
* [[`bc7cadb`](http://github.com/node-modules/agentkeepalive/commit/bc7cadb30ecd2071e2b341ac53ae1a2b8155c43d)] - feat: use socket custom freeSocketKeepAliveTimeout first (#59) (fengmk2 <<fengmk2@gmail.com>>)
**others**
* [[`138eda8`](http://github.com/node-modules/agentkeepalive/commit/138eda81e10b632aaa87bea0cb66d8667124c4e8)] - doc: fix `keepAliveMsecs` params description (#55) (Hongcai Deng <<admin@dhchouse.com>>)
3.3.0 / 2017-06-20
==================
* feat: add statusChanged getter (#51)
* chore: format License
3.2.0 / 2017-06-10
==================
* feat: add expiring active sockets
* test: add node 8 (#49)
3.1.0 / 2017-02-20
==================
* feat: timeout support humanize ms (#48)
3.0.0 / 2016-12-20
==================
* fix: emit agent socket close event
* test: add remove excess calls to removeSocket
* test: use egg-ci
* test: refactor test with eslint rules
* feat: merge _http_agent.js from 7.2.1
2.2.0 / 2016-06-26
==================
* feat: Add browser shim (noop) for isomorphic use. (#39)
* chore: add security check badge
2.1.1 / 2016-04-06
==================
* https: fix ssl socket leak when keepalive is used
* chore: remove circle ci image
2.1.0 / 2016-04-02
==================
* fix: opened sockets number overflow maxSockets
2.0.5 / 2016-03-16
==================
* fix: pick _evictSession to httpsAgent
2.0.4 / 2016-03-13
==================
* test: add Circle ci
* test: add appveyor ci build
* refactor: make sure only one error listener
* chore: use codecov
* fix: handle idle socket error
* test: run on more node versions
2.0.3 / 2015-08-03
==================
* fix: add default error handler to avoid Unhandled error event throw
2.0.2 / 2015-04-25
==================
* fix: remove socket from freeSockets on 'timeout' (@pmalouin)
2.0.1 / 2015-04-19
==================
* fix: add timeoutSocketCount to getCurrentStatus()
* feat(getCurrentStatus): add getCurrentStatus
2.0.0 / 2015-04-01
==================
* fix: socket.destroyed always be undefined on 0.10.x
* Make it compatible with node v0.10.x (@lattmann)
1.2.1 / 2015-03-23
==================
* patch from iojs: don't overwrite servername option
* patch commits from joyent/node
* add max sockets test case
* add nagle algorithm delayed link
1.2.0 / 2014-09-02
==================
* allow set keepAliveTimeout = 0
* support timeout on working socket. fixed #6
1.1.0 / 2014-08-28
==================
* add some socket counter for deep monitor
1.0.0 / 2014-08-13
==================
* update _http_agent, only support 0.11+, only support node 0.11.0+
0.2.2 / 2013-11-19
==================
* support node 0.8 and node 0.10
0.2.1 / 2013-11-08
==================
* fix socket does not timeout bug, it will hang on life, must use 0.2.x on node 0.11
0.2.0 / 2013-11-06
==================
* use keepalive agent on node 0.11+ impl
0.1.5 / 2013-06-24
==================
* support coveralls
* add node 0.10 test
* add 0.8.22 original https.js
* add original http.js module to diff
* update jscover
* mv pem to fixtures
* add https agent usage

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# agentkeepalive
[![NPM version][npm-image]][npm-url]
[![build status][travis-image]][travis-url]
[![Appveyor status][appveyor-image]][appveyor-url]
[![Test coverage][codecov-image]][codecov-url]
[![David deps][david-image]][david-url]
[![Known Vulnerabilities][snyk-image]][snyk-url]
[![npm download][download-image]][download-url]
[npm-image]: https://img.shields.io/npm/v/agentkeepalive.svg?style=flat
[npm-url]: https://npmjs.org/package/agentkeepalive
[travis-image]: https://img.shields.io/travis/node-modules/agentkeepalive.svg?style=flat
[travis-url]: https://travis-ci.org/node-modules/agentkeepalive
[appveyor-image]: https://ci.appveyor.com/api/projects/status/k7ct4s47di6m5uy2?svg=true
[appveyor-url]: https://ci.appveyor.com/project/fengmk2/agentkeepalive
[codecov-image]: https://codecov.io/gh/node-modules/agentkeepalive/branch/master/graph/badge.svg
[codecov-url]: https://codecov.io/gh/node-modules/agentkeepalive
[david-image]: https://img.shields.io/david/node-modules/agentkeepalive.svg?style=flat
[david-url]: https://david-dm.org/node-modules/agentkeepalive
[snyk-image]: https://snyk.io/test/npm/agentkeepalive/badge.svg?style=flat-square
[snyk-url]: https://snyk.io/test/npm/agentkeepalive
[download-image]: https://img.shields.io/npm/dm/agentkeepalive.svg?style=flat-square
[download-url]: https://npmjs.org/package/agentkeepalive
The Node.js's missing `keep alive` `http.Agent`. Support `http` and `https`.
## What's different from original `http.Agent`?
- `keepAlive=true` by default
- Disable Nagle's algorithm: `socket.setNoDelay(true)`
- Add free socket timeout: avoid long time inactivity socket leak in the free-sockets queue.
- Add active socket timeout: avoid long time inactivity socket leak in the active-sockets queue.
## Install
```bash
$ npm install agentkeepalive --save
```
## new Agent([options])
* `options` {Object} Set of configurable options to set on the agent.
Can have the following fields:
* `keepAlive` {Boolean} Keep sockets around in a pool to be used by
other requests in the future. Default = `true`.
* `keepAliveMsecs` {Number} When using the keepAlive option, specifies the initial delay
for TCP Keep-Alive packets. Ignored when the keepAlive option is false or undefined. Defaults to 1000.
Default = `1000`. Only relevant if `keepAlive` is set to `true`.
* `freeSocketKeepAliveTimeout`: {Number} Sets the free socket to timeout
after `freeSocketKeepAliveTimeout` milliseconds of inactivity on the free socket.
Default is `15000`.
Only relevant if `keepAlive` is set to `true`.
* `timeout`: {Number} Sets the working socket to timeout
after `timeout` milliseconds of inactivity on the working socket.
Default is `freeSocketKeepAliveTimeout * 2`.
* `maxSockets` {Number} Maximum number of sockets to allow per
host. Default = `Infinity`.
* `maxFreeSockets` {Number} Maximum number of sockets (per host) to leave open
in a free state. Only relevant if `keepAlive` is set to `true`.
Default = `256`.
* `socketActiveTTL` {Number} Sets the socket active time to live, even if it's in use.
If not setted the behaviour continues the same (the socket will be released only when free)
Default = `null`.
## Usage
```js
const http = require('http');
const Agent = require('agentkeepalive');
const keepaliveAgent = new Agent({
maxSockets: 100,
maxFreeSockets: 10,
timeout: 60000,
freeSocketKeepAliveTimeout: 30000, // free socket keepalive for 30 seconds
});
const options = {
host: 'cnodejs.org',
port: 80,
path: '/',
method: 'GET',
agent: keepaliveAgent,
};
const req = http.request(options, res => {
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
res.setEncoding('utf8');
res.on('data', function (chunk) {
console.log('BODY: ' + chunk);
});
});
req.on('error', e => {
console.log('problem with request: ' + e.message);
});
req.end();
setTimeout(() => {
if (keepaliveAgent.statusChanged) {
console.log('[%s] agent status changed: %j', Date(), keepaliveAgent.getCurrentStatus());
}
}, 2000);
```
### `getter agent.statusChanged`
counters have change or not after last checkpoint.
### `agent.getCurrentStatus()`
`agent.getCurrentStatus()` will return a object to show the status of this agent:
```js
{
createSocketCount: 10,
closeSocketCount: 5,
timeoutSocketCount: 0,
requestCount: 5,
freeSockets: { 'localhost:57479:': 3 },
sockets: { 'localhost:57479:': 5 },
requests: {}
}
```
### Support `https`
```js
const https = require('https');
const HttpsAgent = require('agentkeepalive').HttpsAgent;
const keepaliveAgent = new HttpsAgent();
// https://www.google.com/search?q=nodejs&sugexp=chrome,mod=12&sourceid=chrome&ie=UTF-8
const options = {
host: 'www.google.com',
port: 443,
path: '/search?q=nodejs&sugexp=chrome,mod=12&sourceid=chrome&ie=UTF-8',
method: 'GET',
agent: keepaliveAgent,
};
const req = https.request(options, res => {
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
res.setEncoding('utf8');
res.on('data', chunk => {
console.log('BODY: ' + chunk);
});
});
req.on('error', e => {
console.log('problem with request: ' + e.message);
});
req.end();
setTimeout(() => {
console.log('agent status: %j', keepaliveAgent.getCurrentStatus());
}, 2000);
```
## [Benchmark](https://github.com/node-modules/agentkeepalive/tree/master/benchmark)
run the benchmark:
```bash
cd benchmark
sh start.sh
```
Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz
node@v0.8.9
50 maxSockets, 60 concurrent, 1000 requests per concurrent, 5ms delay
Keep alive agent (30 seconds):
```js
Transactions: 60000 hits
Availability: 100.00 %
Elapsed time: 29.70 secs
Data transferred: 14.88 MB
Response time: 0.03 secs
Transaction rate: 2020.20 trans/sec
Throughput: 0.50 MB/sec
Concurrency: 59.84
Successful transactions: 60000
Failed transactions: 0
Longest transaction: 0.15
Shortest transaction: 0.01
```
Normal agent:
```js
Transactions: 60000 hits
Availability: 100.00 %
Elapsed time: 46.53 secs
Data transferred: 14.88 MB
Response time: 0.05 secs
Transaction rate: 1289.49 trans/sec
Throughput: 0.32 MB/sec
Concurrency: 59.81
Successful transactions: 60000
Failed transactions: 0
Longest transaction: 0.45
Shortest transaction: 0.00
```
Socket created:
```
[proxy.js:120000] keepalive, 50 created, 60000 requestFinished, 1200 req/socket, 0 requests, 0 sockets, 0 unusedSockets, 50 timeout
{" <10ms":662," <15ms":17825," <20ms":20552," <30ms":17646," <40ms":2315," <50ms":567," <100ms":377," <150ms":56," <200ms":0," >=200ms+":0}
----------------------------------------------------------------
[proxy.js:120000] normal , 53866 created, 84260 requestFinished, 1.56 req/socket, 0 requests, 0 sockets
{" <10ms":75," <15ms":1112," <20ms":10947," <30ms":32130," <40ms":8228," <50ms":3002," <100ms":4274," <150ms":181," <200ms":18," >=200ms+":33}
```
## License
```
(The MIT License)
Copyright(c) node-modules and other contributors.
Copyright(c) 2012 - 2015 fengmk2 <fengmk2@gmail.com>
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.
```

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module.exports = noop;
module.exports.HttpsAgent = noop;
// Noop function for browser since native api's don't use agents.
function noop () {}

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declare module "agentkeepalive" {
import * as http from 'http';
import * as https from 'https';
interface AgentStatus {
createSocketCount: number,
createSocketErrorCount: number,
closeSocketCount: number,
errorSocketCount: number,
timeoutSocketCount: number,
requestCount: number,
freeSockets: object,
sockets: object,
requests: object,
}
interface HttpOptions extends http.AgentOptions {
freeSocketKeepAliveTimeout?: number;
timeout?: number;
socketActiveTTL?: number;
}
interface HttpsOptions extends https.AgentOptions {
freeSocketKeepAliveTimeout?: number;
timeout?: number;
socketActiveTTL?: number;
}
class internal extends http.Agent {
constructor(opts?: HttpOptions);
readonly statusChanged: boolean;
createSocket(req: http.IncomingMessage, options: http.RequestOptions, cb: Function): void;
getCurrentStatus(): AgentStatus;
}
namespace internal {
export class HttpsAgent extends internal {
constructor(opts?: HttpsOptions);
}
}
export = internal;
}

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'use strict';
module.exports = require('./lib/agent');
module.exports.HttpsAgent = require('./lib/https_agent');

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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.
// patch from https://github.com/nodejs/node/blob/v7.2.1/lib/_http_agent.js
'use strict';
const net = require('net');
const util = require('util');
const EventEmitter = require('events');
const debug = util.debuglog('http');
// New Agent code.
// The largest departure from the previous implementation is that
// an Agent instance holds connections for a variable number of host:ports.
// Surprisingly, this is still API compatible as far as third parties are
// concerned. The only code that really notices the difference is the
// request object.
// Another departure is that all code related to HTTP parsing is in
// ClientRequest.onSocket(). The Agent is now *strictly*
// concerned with managing a connection pool.
function Agent(options) {
if (!(this instanceof Agent))
return new Agent(options);
EventEmitter.call(this);
var self = this;
self.defaultPort = 80;
self.protocol = 'http:';
self.options = util._extend({}, options);
// don't confuse net and make it think that we're connecting to a pipe
self.options.path = null;
self.requests = {};
self.sockets = {};
self.freeSockets = {};
self.keepAliveMsecs = self.options.keepAliveMsecs || 1000;
self.keepAlive = self.options.keepAlive || false;
self.maxSockets = self.options.maxSockets || Agent.defaultMaxSockets;
self.maxFreeSockets = self.options.maxFreeSockets || 256;
// [patch start]
// free keep-alive socket timeout. By default free socket do not have a timeout.
self.freeSocketKeepAliveTimeout = self.options.freeSocketKeepAliveTimeout || 0;
// working socket timeout. By default working socket do not have a timeout.
self.timeout = self.options.timeout || 0;
// the socket active time to live, even if it's in use
this.socketActiveTTL = this.options.socketActiveTTL || null;
// [patch end]
self.on('free', function(socket, options) {
var name = self.getName(options);
debug('agent.on(free)', name);
if (socket.writable &&
self.requests[name] && self.requests[name].length) {
// [patch start]
debug('continue handle next request');
// [patch end]
self.requests[name].shift().onSocket(socket);
if (self.requests[name].length === 0) {
// don't leak
delete self.requests[name];
}
} else {
// If there are no pending requests, then put it in
// the freeSockets pool, but only if we're allowed to do so.
var req = socket._httpMessage;
if (req &&
req.shouldKeepAlive &&
socket.writable &&
self.keepAlive) {
var freeSockets = self.freeSockets[name];
var freeLen = freeSockets ? freeSockets.length : 0;
var count = freeLen;
if (self.sockets[name])
count += self.sockets[name].length;
if (count > self.maxSockets || freeLen >= self.maxFreeSockets) {
socket.destroy();
} else {
freeSockets = freeSockets || [];
self.freeSockets[name] = freeSockets;
socket.setKeepAlive(true, self.keepAliveMsecs);
socket.unref();
socket._httpMessage = null;
self.removeSocket(socket, options);
freeSockets.push(socket);
// [patch start]
// Add a default error handler to avoid Unhandled 'error' event throw on idle socket
// https://github.com/node-modules/agentkeepalive/issues/25
// https://github.com/nodejs/node/pull/4482 (fixed in >= 4.4.0 and >= 5.4.0)
if (socket.listeners('error').length === 0) {
socket.once('error', freeSocketErrorListener);
}
// set free keepalive timer
// try to use socket custom freeSocketKeepAliveTimeout first
const freeSocketKeepAliveTimeout = socket.freeSocketKeepAliveTimeout || self.freeSocketKeepAliveTimeout;
socket.setTimeout(freeSocketKeepAliveTimeout);
debug(`push to free socket queue and wait for ${freeSocketKeepAliveTimeout}ms`);
// [patch end]
}
} else {
socket.destroy();
}
}
});
}
util.inherits(Agent, EventEmitter);
exports.Agent = Agent;
// [patch start]
function freeSocketErrorListener(err) {
var socket = this;
debug('SOCKET ERROR on FREE socket:', err.message, err.stack);
socket.destroy();
socket.emit('agentRemove');
}
// [patch end]
Agent.defaultMaxSockets = Infinity;
Agent.prototype.createConnection = net.createConnection;
// Get the key for a given set of request options
Agent.prototype.getName = function getName(options) {
var name = options.host || 'localhost';
name += ':';
if (options.port)
name += options.port;
name += ':';
if (options.localAddress)
name += options.localAddress;
// Pacify parallel/test-http-agent-getname by only appending
// the ':' when options.family is set.
if (options.family === 4 || options.family === 6)
name += ':' + options.family;
return name;
};
// [patch start]
function handleSocketCreation(req) {
return function(err, newSocket) {
if (err) {
process.nextTick(function() {
req.emit('error', err);
});
return;
}
req.onSocket(newSocket);
}
}
// [patch end]
Agent.prototype.addRequest = function addRequest(req, options, port/*legacy*/,
localAddress/*legacy*/) {
// Legacy API: addRequest(req, host, port, localAddress)
if (typeof options === 'string') {
options = {
host: options,
port,
localAddress
};
}
options = util._extend({}, options);
options = util._extend(options, this.options);
if (!options.servername)
options.servername = calculateServerName(options, req);
var name = this.getName(options);
if (!this.sockets[name]) {
this.sockets[name] = [];
}
var freeLen = this.freeSockets[name] ? this.freeSockets[name].length : 0;
var sockLen = freeLen + this.sockets[name].length;
if (freeLen) {
// we have a free socket, so use that.
var socket = this.freeSockets[name].shift();
debug('have free socket');
// [patch start]
// remove free socket error event handler
socket.removeListener('error', freeSocketErrorListener);
// restart the default timer
socket.setTimeout(this.timeout);
if (this.socketActiveTTL && Date.now() - socket.createdTime > this.socketActiveTTL) {
debug(`socket ${socket.createdTime} expired`);
socket.destroy();
return this.createSocket(req, options, handleSocketCreation(req));
}
// [patch end]
// don't leak
if (!this.freeSockets[name].length)
delete this.freeSockets[name];
socket.ref();
req.onSocket(socket);
this.sockets[name].push(socket);
} else if (sockLen < this.maxSockets) {
debug('call onSocket', sockLen, freeLen);
// If we are under maxSockets create a new one.
// [patch start]
this.createSocket(req, options, handleSocketCreation(req));
// [patch end]
} else {
debug('wait for socket');
// We are over limit so we'll add it to the queue.
if (!this.requests[name]) {
this.requests[name] = [];
}
this.requests[name].push(req);
}
};
Agent.prototype.createSocket = function createSocket(req, options, cb) {
var self = this;
options = util._extend({}, options);
options = util._extend(options, self.options);
if (!options.servername)
options.servername = calculateServerName(options, req);
var name = self.getName(options);
options._agentKey = name;
debug('createConnection', name, options);
options.encoding = null;
var called = false;
const newSocket = self.createConnection(options, oncreate);
// [patch start]
if (newSocket) {
oncreate(null, Object.assign(newSocket, { createdTime: Date.now() }));
}
// [patch end]
function oncreate(err, s) {
if (called)
return;
called = true;
if (err)
return cb(err);
if (!self.sockets[name]) {
self.sockets[name] = [];
}
self.sockets[name].push(s);
debug('sockets', name, self.sockets[name].length);
function onFree() {
self.emit('free', s, options);
}
s.on('free', onFree);
function onClose(err) {
debug('CLIENT socket onClose');
// This is the only place where sockets get removed from the Agent.
// If you want to remove a socket from the pool, just close it.
// All socket errors end in a close event anyway.
self.removeSocket(s, options);
// [patch start]
self.emit('close');
// [patch end]
}
s.on('close', onClose);
// [patch start]
// start socket timeout handler
function onTimeout() {
debug('CLIENT socket onTimeout');
s.destroy();
// Remove it from freeSockets immediately to prevent new requests from being sent through this socket.
self.removeSocket(s, options);
self.emit('timeout');
}
s.on('timeout', onTimeout);
// set the default timer
s.setTimeout(self.timeout);
// [patch end]
function onRemove() {
// We need this function for cases like HTTP 'upgrade'
// (defined by WebSockets) where we need to remove a socket from the
// pool because it'll be locked up indefinitely
debug('CLIENT socket onRemove');
self.removeSocket(s, options);
s.removeListener('close', onClose);
s.removeListener('free', onFree);
s.removeListener('agentRemove', onRemove);
// [patch start]
// remove socket timeout handler
s.setTimeout(0, onTimeout);
// [patch end]
}
s.on('agentRemove', onRemove);
cb(null, s);
}
};
function calculateServerName(options, req) {
let servername = options.host;
const hostHeader = req.getHeader('host');
if (hostHeader) {
// abc => abc
// abc:123 => abc
// [::1] => ::1
// [::1]:123 => ::1
if (hostHeader.startsWith('[')) {
const index = hostHeader.indexOf(']');
if (index === -1) {
// Leading '[', but no ']'. Need to do something...
servername = hostHeader;
} else {
servername = hostHeader.substr(1, index - 1);
}
} else {
servername = hostHeader.split(':', 1)[0];
}
}
return servername;
}
Agent.prototype.removeSocket = function removeSocket(s, options) {
var name = this.getName(options);
debug('removeSocket', name, 'writable:', s.writable);
var sets = [this.sockets];
// If the socket was destroyed, remove it from the free buffers too.
if (!s.writable)
sets.push(this.freeSockets);
for (var sk = 0; sk < sets.length; sk++) {
var sockets = sets[sk];
if (sockets[name]) {
var index = sockets[name].indexOf(s);
if (index !== -1) {
sockets[name].splice(index, 1);
// Don't leak
if (sockets[name].length === 0)
delete sockets[name];
}
}
}
// [patch start]
var freeLen = this.freeSockets[name] ? this.freeSockets[name].length : 0;
var sockLen = freeLen + (this.sockets[name] ? this.sockets[name].length : 0);
// [patch end]
if (this.requests[name] && this.requests[name].length && sockLen < this.maxSockets) {
debug('removeSocket, have a request, make a socket');
var req = this.requests[name][0];
// If we have pending requests and a socket gets closed make a new one
this.createSocket(req, options, function(err, newSocket) {
if (err) {
process.nextTick(function() {
req.emit('error', err);
});
return;
}
newSocket.emit('free');
});
}
};
Agent.prototype.destroy = function destroy() {
var sets = [this.freeSockets, this.sockets];
for (var s = 0; s < sets.length; s++) {
var set = sets[s];
var keys = Object.keys(set);
for (var v = 0; v < keys.length; v++) {
var setName = set[keys[v]];
for (var n = 0; n < setName.length; n++) {
setName[n].destroy();
}
}
}
};
exports.globalAgent = new Agent();

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node_modules/agentkeepalive/lib/agent.js generated vendored Normal file
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/**
* refer:
* * @atimb "Real keep-alive HTTP agent": https://gist.github.com/2963672
* * https://github.com/joyent/node/blob/master/lib/http.js
* * https://github.com/joyent/node/blob/master/lib/https.js
* * https://github.com/joyent/node/blob/master/lib/_http_agent.js
*/
'use strict';
const OriginalAgent = require('./_http_agent').Agent;
const ms = require('humanize-ms');
class Agent extends OriginalAgent {
constructor(options) {
options = options || {};
options.keepAlive = options.keepAlive !== false;
// default is keep-alive and 15s free socket timeout
if (options.freeSocketKeepAliveTimeout === undefined) {
options.freeSocketKeepAliveTimeout = 15000;
}
// Legacy API: keepAliveTimeout should be rename to `freeSocketKeepAliveTimeout`
if (options.keepAliveTimeout) {
options.freeSocketKeepAliveTimeout = options.keepAliveTimeout;
}
options.freeSocketKeepAliveTimeout = ms(options.freeSocketKeepAliveTimeout);
// Sets the socket to timeout after timeout milliseconds of inactivity on the socket.
// By default is double free socket keepalive timeout.
if (options.timeout === undefined) {
options.timeout = options.freeSocketKeepAliveTimeout * 2;
// make sure socket default inactivity timeout >= 30s
if (options.timeout < 30000) {
options.timeout = 30000;
}
}
options.timeout = ms(options.timeout);
super(options);
this.createSocketCount = 0;
this.createSocketCountLastCheck = 0;
this.createSocketErrorCount = 0;
this.createSocketErrorCountLastCheck = 0;
this.closeSocketCount = 0;
this.closeSocketCountLastCheck = 0;
// socket error event count
this.errorSocketCount = 0;
this.errorSocketCountLastCheck = 0;
this.requestCount = 0;
this.requestCountLastCheck = 0;
this.timeoutSocketCount = 0;
this.timeoutSocketCountLastCheck = 0;
this.on('free', s => {
this.requestCount++;
// last enter free queue timestamp
s.lastFreeTime = Date.now();
});
this.on('timeout', () => {
this.timeoutSocketCount++;
});
this.on('close', () => {
this.closeSocketCount++;
});
this.on('error', () => {
this.errorSocketCount++;
});
}
createSocket(req, options, cb) {
super.createSocket(req, options, (err, socket) => {
if (err) {
this.createSocketErrorCount++;
return cb(err);
}
if (this.keepAlive) {
// Disable Nagle's algorithm: http://blog.caustik.com/2012/04/08/scaling-node-js-to-100k-concurrent-connections/
// https://fengmk2.com/benchmark/nagle-algorithm-delayed-ack-mock.html
socket.setNoDelay(true);
}
this.createSocketCount++;
cb(null, socket);
});
}
get statusChanged() {
const changed = this.createSocketCount !== this.createSocketCountLastCheck ||
this.createSocketErrorCount !== this.createSocketErrorCountLastCheck ||
this.closeSocketCount !== this.closeSocketCountLastCheck ||
this.errorSocketCount !== this.errorSocketCountLastCheck ||
this.timeoutSocketCount !== this.timeoutSocketCountLastCheck ||
this.requestCount !== this.requestCountLastCheck;
if (changed) {
this.createSocketCountLastCheck = this.createSocketCount;
this.createSocketErrorCountLastCheck = this.createSocketErrorCount;
this.closeSocketCountLastCheck = this.closeSocketCount;
this.errorSocketCountLastCheck = this.errorSocketCount;
this.timeoutSocketCountLastCheck = this.timeoutSocketCount;
this.requestCountLastCheck = this.requestCount;
}
return changed;
}
getCurrentStatus() {
return {
createSocketCount: this.createSocketCount,
createSocketErrorCount: this.createSocketErrorCount,
closeSocketCount: this.closeSocketCount,
errorSocketCount: this.errorSocketCount,
timeoutSocketCount: this.timeoutSocketCount,
requestCount: this.requestCount,
freeSockets: inspect(this.freeSockets),
sockets: inspect(this.sockets),
requests: inspect(this.requests),
};
}
}
module.exports = Agent;
function inspect(obj) {
const res = {};
for (const key in obj) {
res[key] = obj[key].length;
}
return res;
}

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node_modules/agentkeepalive/lib/https_agent.js generated vendored Normal file
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/**
* Https Agent base on custom http agent
*/
'use strict';
const https = require('https');
const HttpAgent = require('./agent');
const OriginalHttpsAgent = https.Agent;
class HttpsAgent extends HttpAgent {
constructor(options) {
super(options);
this.defaultPort = 443;
this.protocol = 'https:';
this.maxCachedSessions = this.options.maxCachedSessions;
if (this.maxCachedSessions === undefined) {
this.maxCachedSessions = 100;
}
this._sessionCache = {
map: {},
list: [],
};
}
}
[
'createConnection',
'getName',
'_getSession',
'_cacheSession',
// https://github.com/nodejs/node/pull/4982
'_evictSession',
].forEach(function(method) {
if (typeof OriginalHttpsAgent.prototype[method] === 'function') {
HttpsAgent.prototype[method] = OriginalHttpsAgent.prototype[method];
}
});
module.exports = HttpsAgent;

83
node_modules/agentkeepalive/package.json generated vendored Normal file
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{
"_from": "agentkeepalive@^3.4.1",
"_id": "agentkeepalive@3.5.2",
"_inBundle": false,
"_integrity": "sha512-e0L/HNe6qkQ7H19kTlRRqUibEAwDK5AFk6y3PtMsuut2VAH6+Q4xZml1tNDJD7kSAyqmbG/K08K5WEJYtUrSlQ==",
"_location": "/agentkeepalive",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "agentkeepalive@^3.4.1",
"name": "agentkeepalive",
"escapedName": "agentkeepalive",
"rawSpec": "^3.4.1",
"saveSpec": null,
"fetchSpec": "^3.4.1"
},
"_requiredBy": [
"/make-fetch-happen"
],
"_resolved": "https://registry.npmjs.org/agentkeepalive/-/agentkeepalive-3.5.2.tgz",
"_shasum": "a113924dd3fa24a0bc3b78108c450c2abee00f67",
"_spec": "agentkeepalive@^3.4.1",
"_where": "/home/shimataro/projects/actions/ssh-key-action/node_modules/make-fetch-happen",
"author": {
"name": "fengmk2",
"email": "fengmk2@gmail.com",
"url": "https://fengmk2.com"
},
"browser": "browser.js",
"bugs": {
"url": "https://github.com/node-modules/agentkeepalive/issues"
},
"bundleDependencies": false,
"ci": {
"version": "4, 6, 8, 10"
},
"dependencies": {
"humanize-ms": "^1.2.1"
},
"deprecated": false,
"description": "Missing keepalive http.Agent",
"devDependencies": {
"autod": "^3.0.1",
"egg-bin": "^1.11.1",
"egg-ci": "^1.8.0",
"eslint": "^4.19.1",
"eslint-config-egg": "^6.0.0",
"pedding": "^1.1.0"
},
"engines": {
"node": ">= 4.0.0"
},
"files": [
"index.js",
"index.d.ts",
"browser.js",
"lib"
],
"homepage": "https://github.com/node-modules/agentkeepalive#readme",
"keywords": [
"http",
"https",
"agent",
"keepalive",
"agentkeepalive"
],
"license": "MIT",
"main": "index.js",
"name": "agentkeepalive",
"repository": {
"type": "git",
"url": "git://github.com/node-modules/agentkeepalive.git"
},
"scripts": {
"autod": "autod",
"ci": "npm run lint && npm run cov",
"cov": "egg-bin cov",
"lint": "eslint lib test index.js",
"test": "egg-bin test"
},
"version": "3.5.2"
}