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http: add maxTotalSockets to agent class
Add maxTotalSockets to determine how many sockets an agent can open. Unlike maxSockets, The maxTotalSockets does not count by per origin. PR-URL: #33617 Backport-PR-URL: #35396 Fixes: #31942 Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| 'use strict'; | ||
|
|
||
| const common = require('../common'); | ||
| const assert = require('assert'); | ||
| const http = require('http'); | ||
| const Countdown = require('../common/countdown'); | ||
|
|
||
| assert.throws(() => new http.Agent({ | ||
| maxTotalSockets: 'test', | ||
| }), { | ||
| code: 'ERR_INVALID_ARG_TYPE', | ||
| name: 'TypeError', | ||
| message: 'The "maxTotalSockets" argument must be of type number. ' + | ||
| "Received type string ('test')", | ||
| }); | ||
|
|
||
| [-1, 0, NaN].forEach((item) => { | ||
| assert.throws(() => new http.Agent({ | ||
| maxTotalSockets: item, | ||
| }), { | ||
| code: 'ERR_OUT_OF_RANGE', | ||
| name: 'RangeError', | ||
| message: 'The value of "maxTotalSockets" is out of range. ' + | ||
| `It must be > 0. Received ${item}`, | ||
| }); | ||
| }); | ||
|
|
||
| assert.ok(new http.Agent({ | ||
| maxTotalSockets: Infinity, | ||
| })); | ||
|
|
||
| function start(param = {}) { | ||
| const { maxTotalSockets, maxSockets } = param; | ||
|
|
||
| const agent = new http.Agent({ | ||
| keepAlive: true, | ||
| keepAliveMsecs: 1000, | ||
| maxTotalSockets, | ||
| maxSockets, | ||
| maxFreeSockets: 3 | ||
| }); | ||
|
|
||
| const server = http.createServer(common.mustCall((req, res) => { | ||
| res.end('hello world'); | ||
| }, 6)); | ||
| const server2 = http.createServer(common.mustCall((req, res) => { | ||
| res.end('hello world'); | ||
| }, 6)); | ||
|
|
||
| server.keepAliveTimeout = 0; | ||
| server2.keepAliveTimeout = 0; | ||
|
|
||
| const countdown = new Countdown(12, () => { | ||
| assert.strictEqual(getRequestCount(), 0); | ||
| agent.destroy(); | ||
| server.close(); | ||
| server2.close(); | ||
| }); | ||
|
|
||
| function handler(s) { | ||
| for (let i = 0; i < 6; i++) { | ||
| http.get({ | ||
| host: 'localhost', | ||
| port: s.address().port, | ||
| agent, | ||
| path: `/${i}`, | ||
| }, common.mustCall((res) => { | ||
| assert.strictEqual(res.statusCode, 200); | ||
| res.resume(); | ||
| res.on('end', common.mustCall(() => { | ||
| for (const key of Object.keys(agent.sockets)) { | ||
| assert(agent.sockets[key].length <= maxSockets); | ||
| } | ||
| assert(getTotalSocketsCount() <= maxTotalSockets); | ||
| countdown.dec(); | ||
| })); | ||
| })); | ||
| } | ||
| } | ||
|
|
||
| function getTotalSocketsCount() { | ||
| let num = 0; | ||
| for (const key of Object.keys(agent.sockets)) { | ||
| num += agent.sockets[key].length; | ||
| } | ||
| return num; | ||
| } | ||
|
|
||
| function getRequestCount() { | ||
| let num = 0; | ||
| for (const key of Object.keys(agent.requests)) { | ||
| num += agent.requests[key].length; | ||
| } | ||
| return num; | ||
| } | ||
|
|
||
| server.listen(0, common.mustCall(() => handler(server))); | ||
| server2.listen(0, common.mustCall(() => handler(server2))); | ||
| } | ||
|
|
||
| // If maxTotalSockets is larger than maxSockets, | ||
| // then the origin check will be skipped | ||
| // when the socket is removed. | ||
| [{ | ||
| maxTotalSockets: 2, | ||
| maxSockets: 3, | ||
| }, { | ||
| maxTotalSockets: 3, | ||
| maxSockets: 2, | ||
| }, { | ||
| maxTotalSockets: 2, | ||
| maxSockets: 2, | ||
| }].forEach(start); |