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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-async-hooks-http-agent.js |
'use strict';
// Flags: --expose-internals
const common = require('../common');
const assert = require('assert');
const { async_id_symbol } = require('internal/async_hooks').symbols;
const http = require('http');
// Regression test for https://github.com/nodejs/node/issues/13325
// Checks that an http.Agent properly asyncReset()s a reused socket handle, and
// re-assigns the fresh async id to the reused `net.Socket` instance.
// Make sure a single socket is transparently reused for 2 requests.
const agent = new http.Agent({
keepAlive: true,
keepAliveMsecs: Infinity,
maxSockets: 1
});
const server = http.createServer(common.mustCall((req, res) => {
req.once('data', common.mustCallAtLeast(() => {
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.write('foo');
}));
req.on('end', common.mustCall(() => {
res.end('bar');
}));
}, 2)).listen(0, common.mustCall(() => {
const port = server.address().port;
const payload = 'hello world';
// First request. This is useless except for adding a socket to the
// agent’s pool for reuse.
const r1 = http.request({
agent, port, method: 'POST'
}, common.mustCall((res) => {
// Remember which socket we used.
const socket = res.socket;
const asyncIdAtFirstRequest = socket[async_id_symbol];
assert.ok(asyncIdAtFirstRequest > 0, `${asyncIdAtFirstRequest} > 0`);
// Check that request and response share their socket.
assert.strictEqual(r1.socket, socket);
res.on('data', common.mustCallAtLeast(() => {}));
res.on('end', common.mustCall(() => {
// setImmediate() to give the agent time to register the freed socket.
setImmediate(common.mustCall(() => {
// The socket is free for reuse now.
assert.strictEqual(socket[async_id_symbol], -1);
// Second request. To re-create the exact conditions from the
// referenced issue, we use a POST request without chunked encoding
// (hence the Content-Length header) and call .end() after the
// response header has already been received.
const r2 = http.request({
agent, port, method: 'POST', headers: {
'Content-Length': payload.length
}
}, common.mustCall((res) => {
const asyncId = res.socket[async_id_symbol];
assert.ok(asyncId > 0, `${asyncId} > 0`);
assert.strictEqual(r2.socket, socket);
// Empty payload, to hit the “right” code path.
r2.end('');
res.on('data', common.mustCallAtLeast(() => {}));
res.on('end', common.mustCall(() => {
// Clean up to let the event loop stop.
server.close();
agent.destroy();
}));
}));
// Schedule a payload to be written immediately, but do not end the
// request just yet.
r2.write(payload);
}));
}));
}));
r1.end(payload);
}));
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