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How do I create a Python socket server that listens on a file descriptor
import socket
import os, os.path
import time

sockfile = "./communicate.sock"

if os.path.exists( sockfile ):
  os.remove( sockfile )

print "Opening socket..."

server = socket.socket( socket.AF_UNIX, socket.SOCK_STREAM )
server.bind(sockfile)
server.listen(5)

print "Listening..."
while True:
  conn, addr = server.accept()

  print 'accepted connection'

  while True:

    data = conn.recv( 1024 )
    if not data:
        break
    else:
        print "-" * 20
        print data
        if "DONE" == data:
            break
print "-" * 20
print "Shutting down..."

server.close()
os.remove( sockfile )

print "Done"

var net = require('net')
  , log = require('npmlog')
  , sockfile = './communicate.sock'
  ;

var client = net.connect( { path: sockfile });

client
  .on('connect', function () {
    log.info('client', 'client connected');
    client.write('hello server');
  })
  .on('data', function (data) {
    log.info('client', 'Data: %s', data.toString());
    client.end();
  })
  .on('error', function (err) {
    log.error('client', err);
  })
  .on('end', function () {
    log.info('client', 'client disconnected');
  })
  ;