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'use strict';
const common = require('../common');
const assert = require('assert');
const net = require('net');
// Regression test for https://github.com/nodejs/node/issues/19562:
// Writing to a socket first tries to push through as much data as possible
// without blocking synchronously, and, if that is not enough, queues more
// data up for asynchronous writing.
// Check that `bytesWritten` accounts for both parts of a write.
const N = 10000000;
{
// Variant 1: Write a Buffer.
const server = net.createServer(common.mustCall((socket) => {
socket.end(Buffer.alloc(N), common.mustCall(() => {
assert.strictEqual(socket.bytesWritten, N);
}));
assert.strictEqual(socket.bytesWritten, N);
})).listen(0, common.mustCall(() => {
const client = net.connect(server.address().port);
client.resume();
client.on('close', common.mustCall(() => {
assert.strictEqual(client.bytesRead, N);
server.close();
}));
}));
}
{
// Variant 2: Write a string.
const server = net.createServer(common.mustCall((socket) => {
socket.end('a'.repeat(N), common.mustCall(() => {
assert.strictEqual(socket.bytesWritten, N);
}));
assert.strictEqual(socket.bytesWritten, N);
})).listen(0, common.mustCall(() => {
const client = net.connect(server.address().port);
client.resume();
client.on('close', common.mustCall(() => {
assert.strictEqual(client.bytesRead, N);
server.close();
}));
}));
}
{
// Variant 2: writev() with mixed data.
const server = net.createServer(common.mustCall((socket) => {
socket.cork();
socket.write('a'.repeat(N));
assert.strictEqual(socket.bytesWritten, N);
socket.write(Buffer.alloc(N));
assert.strictEqual(socket.bytesWritten, 2 * N);
socket.end('', common.mustCall(() => {
assert.strictEqual(socket.bytesWritten, 2 * N);
}));
socket.uncork();
})).listen(0, common.mustCall(() => {
const client = net.connect(server.address().port);
client.resume();
client.on('close', common.mustCall(() => {
assert.strictEqual(client.bytesRead, 2 * N);
server.close();
}));
}));
}
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