handler.php

<?php

$ctx       = new \ZMQContext();
$rsock     = $ctx->getSocket(\ZMQ::SOCKET_UPSTREAM);
$ssock     = $ctx->getSocket(\ZMQ::SOCKET_PUB);

$rsock->connect('tcp://127.0.0.1:9997');
$ssock->connect('tcp://127.0.0.1:9996');
$ssock->setSockOpt(\ZMQ::SOCKOPT_IDENTITY, "70D107AB-19F5-44AE-A2D0-2326A167D8D7");

while (true) {
    echo "WAITING FOR REQUEST...\n";
    $str = $rsock->recv();
    echo "RECEIVED\n";
    list($sender,$conn_id,$path,$str) = explode(' ', $str, 4);
    $res = sprintf(
        "%s %d:%s, HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nContent-Length: 3\r\n\r\nphp",
        $sender,
        strlen($conn_id),
        $conn_id
    );
    $ssock->send($res);
    echo "SEND: " . $res . "\n";
}

handler.rb

#!/usr/bin/env ruby
# coding: utf-8

require 'zmq'

con   = ZMQ::Context.new
rsock = con.socket(ZMQ::UPSTREAM)
ssock = con.socket(ZMQ::PUB)

rsock.connect('tcp://127.0.0.1:9997')
ssock.connect('tcp://127.0.0.1:9996')
ssock.setsockopt(ZMQ::IDENTITY, "70D107AB-19F5-44AE-A2D0-2326A167D8D7")

loop do
  puts "WAITING FOR REQUEST..."
  str = rsock.recv
  pust "RECEIVE";
  sender, conn_id, path, str = str.split(' ', 4)
  res = "#{sender} #{conn_id.size}:#{conn_id}, HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nContent-Length: 4\r\n\r\nruby"
  ssock.send res, 0
  puts "SEND: #{res}"
end

m2test.py

# m2test.py

main = Server(
    uuid ="2f62bd5-9e59-49cd-993c-3b6013c28f05",
    chroot="./",
    access_log="/logs/access.log",
    error_log="/logs/error.log",
    pid_file="/run/mongrel2.pid",
    default_host="localhost",
    name="main",
    port=6767,
    hosts=[
        Host(
            name="localhost",
            routes={
                '/m2test': Handler(
                    send_spec="tcp://127.0.0.1:9997",
                    send_ident="70D107AB-19F5-44AE-A2D0-2326A167D8D7",
                    recv_spec="tcp://127.0.0.1:9996",
                    recv_ident=""
                )
            }
        )
    ]
)
settings = {"zeromq.threads": 1}
servers  = [main]