gecko/netwerk/test/unit/socks_client_subprocess.js

var CC = Components.Constructor;
var Cc = Components.classes;
var Ci = Components.interfaces;

const BinaryInputStream = CC("@mozilla.org/binaryinputstream;1",
                             "nsIBinaryInputStream",
                             "setInputStream");
const ProtocolProxyService = CC("@mozilla.org/network/protocol-proxy-service;1",
                                "nsIProtocolProxyService");
var sts = Cc["@mozilla.org/network/socket-transport-service;1"]
          .getService(Ci.nsISocketTransportService);

function launchConnection(socks_vers, socks_port, dest_host, dest_port, dns)
{
  var pi_flags = 0;
  if (dns == 'remote')
    pi_flags = Ci.nsIProxyInfo.TRANSPARENT_PROXY_RESOLVES_HOST;
  
  var pps = new ProtocolProxyService();
  var pi = pps.newProxyInfo(socks_vers, 'localhost', socks_port,
          pi_flags, -1, null);
  var trans = sts.createTransport(null, 0, dest_host, dest_port, pi);
  var input = trans.openInputStream(Ci.nsITransport.OPEN_BLOCKING,0,0);
  var output = trans.openOutputStream(Ci.nsITransport.OPEN_BLOCKING,0,0);
  var bin = new BinaryInputStream(input);
  var data = bin.readBytes(5);
  if (data == 'PING!') {
    print('client: got ping, sending pong.');
    output.write('PONG!', 5);
  } else {
    print('client: wrong data from server:', data);
    output.write('Error: wrong data received.', 27);
  }
  output.close();
}

for (var arg of arguments) {
  print('client: running test', arg);
  test = arg.split('|');
  launchConnection(test[0], parseInt(test[1]), test[2],
       parseInt(test[3]), test[4]);
}