about TCP example in Manual

[wuxu...@gmail.com]

my question is that what function of the 'c.pipe(c)' in blow program. if no c.pipe(c), what's the difference? thanks!

var net = require('net');
var server = net.createServer(function(c) { //'connection' listener
  console.log('server connected');
  c.on('end', function() {
    console.log('server disconnected');
  });
  c.write('hello\r\n');
  c.pipe(c);
});
server.listen(8124, function() { //'listening' listener
  console.log('server bound');
});

 

[Jimb Esser]

c.pipe(c) is reading from c (a single client's socket) and writing that same data back to c, so it's acting as a traditional "echo server" - if you telnet to the server, you should see any data you send echoed back to you after it sends you "hello\n".