inetd_wsgi.py

#!/usr/bin/env python
""" Serve WSGI requests via inetd / launchd """

import sys
import socket
from StringIO import StringIO
from wsgiref.simple_server import WSGIServer, make_server

class InetdWSGIServer(WSGIServer):
    """
    Hacked WSGIServer that handles one request when invoked from inetd
    (tested on launchd with inetd compatibility mode)
    """
    def __init__(self, server_address, RequestHandlerClass):
        from SocketServer import BaseServer
        BaseServer.__init__(self, server_address, RequestHandlerClass)
        self.socket = socket.fromfd(sys.stdout.fileno(),
                socket.AF_INET, socket.SOCK_STREAM)
        self.server_address = self.socket.getsockname()
        host, port = self.socket.getsockname()[:2]
        self.server_name = socket.getfqdn(host)
        self.server_port = port
        self.setup_environ()

    def get_request(self):
        return self.socket, self.socket.getsockname()[0]

def serve_inetd(wsgi_app):
    httpd = make_server(None, None, wsgi_app, server_class=InetdWSGIServer)
    sys.stderr = StringIO()
    httpd.handle_request()

if __name__ == '__main__':
    def app(environ, start_response):
        """ Simple application to test our server """
        start_response('200 OK', [('Content-type', 'text/plain;charset=utf-8')])
        return ["Hello inetd!\nYou are here: %s" % environ['PATH_INFO']]
    serve_inetd(app)