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88 lines
3.6 KiB
88 lines
3.6 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const http = require('http');
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const Countdown = require('../common/countdown');
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const server = http.createServer(common.mustCall((req, res) => {
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res.writeHead(200, { 'Content-Type': 'text/plain' });
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res.end('Hello World\n');
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}, 2)).listen(0, common.mustCall(() => {
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const agent = new http.Agent({ maxSockets: 1 });
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agent.on('free', common.mustCall(3));
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const requestOptions = {
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agent: agent,
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host: 'localhost',
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port: server.address().port,
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path: '/'
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};
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const request1 = http.get(requestOptions, common.mustCall((response) => {
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// assert request2 is queued in the agent
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const key = agent.getName(requestOptions);
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assert.strictEqual(agent.requests[key].length, 1);
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request1.socket.on('close', common.mustCall());
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response.resume();
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response.on('end', common.mustCall(() => {
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/////////////////////////////////
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//
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// THE IMPORTANT PART
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//
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// It is possible for the socket to get destroyed and other work
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// to run before the 'close' event fires because it happens on
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// nextTick. This example is contrived because it destroys the
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// socket manually at just the right time, but at Voxer we have
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// seen cases where the socket is destroyed by non-user code
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// then handed out again by an agent *before* the 'close' event
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// is triggered.
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request1.socket.destroy();
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// TODO(jasnell): This close event does not appear to be triggered.
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// is it necessary?
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response.once('close', () => {
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// assert request2 was removed from the queue
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assert(!agent.requests[key]);
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process.nextTick(() => {
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// assert that the same socket was not assigned to request2,
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// since it was destroyed.
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assert.notStrictEqual(request1.socket, request2.socket);
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assert(!request2.socket.destroyed, 'the socket is destroyed');
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});
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});
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}));
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}));
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const request2 = http.get(requestOptions, common.mustCall((response) => {
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assert(!request2.socket.destroyed);
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assert(request1.socket.destroyed);
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// assert not reusing the same socket, since it was destroyed.
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assert.notStrictEqual(request1.socket, request2.socket);
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const countdown = new Countdown(2, common.mustCall(() => server.close()));
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request2.socket.on('close', common.mustCall(() => countdown.dec()));
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response.on('end', common.mustCall(() => countdown.dec()));
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response.resume();
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}));
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}));
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