Miscellany

                while True:
                        # Read request lines
                        req_lines = []
                        while True:
                                try:
                                        line = yield self.read_line(delimiter="\r\n")
                                except tcp.ConnectionOverflowException:
                                        yield self.send_error(400)
                                        self.close()
                                except (tcp.ConnectionClosedException, socket.error):
                                        return

                                if not line: break
                                req_lines.append(line)

                        # Set up request and response objects
                        req = HTTPRequest(req_lines)
                        response = HTTPResponse()

                        # Request processing will happen here
                        if req.url == "/":
                                response.code = 200
                                response.content = "<html><body>Hello, World!</body></html>"
                        else:
                                response.default_error(404)

                        if req.should_keep_alive():
                                # It's a persistent connection; send the response and then wait for another request
                                response.headers["Connection"] = "keep-alive"
                                yield response.write_out(self.sock)
                        else:
                                # Just write and close.
                                response.headers["Connection"] = "close"
                                yield response.write_out(self.sock)
                                self.close()
                                return