const normal = fork('subprocess.js', ['normal']);

const special = fork('subprocess.js', ['special']);

// Open up the server and send sockets to child

const server = require('net').createServer();

// Open up the server and send sockets to child. Use pauseOnConnect to prevent

// the sockets from being read before they are sent to the child process.

const server = require('net').createServer({ pauseOnConnect: true });

server.on('connection', (socket) => {

// If this is special priority

```js

process.on('message', (m, socket) => {

if (m === 'socket') {

socket.end(`Request handled with ${process.argv[2]} priority`);

if (socket) {

// Check that the client socket exists.

// It is possible for the socket to be closed between the time it is

// sent and the time it is received in the child process.

socket.end(`Request handled with ${process.argv[2]} priority`);

}

}

});

```

property becomes `null`. It is recommended not to use `.maxConnections` when

this occurs.

It is also recommended that any `'message'` handlers in the child process

verify that `socket` exists, as the connection may have been closed during the

time it takes to send the connection to the child.

*Note: this function uses [`JSON.stringify()`][] internally to serialize the

`message`.*