Similar to stream-pair, but with sockets with real fds. A workaround for https://github.com/nodejs/node/issues/12716

A pair of coupled Unix sockets (or Windows pipes).
Similar to stream-pair, but with sockets with real fds and .setTimeout().
Originally a workaround for
but still has some use relevant cases, particularly when building proxies.
Note: This workaround is necessary in node v6.11.1, but not necessary in node v8.2.1.
I would assume it is also not necessary in later versions.
``javascript
var socketPair = require('socket-pair');
var socket = socketPair.create(function (err, other) {
// socket as in client = new net.Socket(); client.connect(...);server.on('connection', function (conn) { ... })
// other as in
socket.write('123');
other.on('data', function (chunk) {
console.log(chunk.toString('utf8'));
});
socketPair.closeAll();
});
`
I named them client and connection, but their names really have no meaning.
You can call them a and b or other and one or red and blue. It makes no difference.
```
socketPair.create(cb) // creates or reuses a socket server
socketPair.closeAll() // closes the server and all sockets