wsgiserver.py 文件源码

def respond(self):
        """Process the current request."""
        response = self.req.server.wsgi_app(self.env, self.start_response)
        try:
            for chunk in response:
                # "The start_response callable must not actually transmit
                # the response headers. Instead, it must store them for the
                # server or gateway to transmit only after the first
                # iteration of the application return value that yields
                # a NON-EMPTY string, or upon the application's first
                # invocation of the write() callable." (PEP 333)
                if chunk:
                    if not isinstance(chunk, binary_type):
                        raise ValueError("WSGI Applications must yield bytes")
                    self.write(chunk)
        finally:
            if hasattr(response, "close"):
                response.close()