SOCKETSERVER PYTHON 3 INSTALL VERIFICATION

Standard classes for Sun RPC (which uses either UDP or TCP) Where each client can potentially be connected for a long time (if This is particularly important for stream services Too expensive or inappropriate for the service) is to maintain anĮxplicit table of partially finished requests and to use a selector toĭecide which request to work on next (or whether to handle a new Server and doing an explicit fork in the request handler classĪnother approach to handling multiple simultaneous requests in anĮnvironment that supports neither threads nor fork (or where these are

This can be implemented by using a synchronous Synchronously, but to finish processing in a forked child depending on In some cases, it may be appropriate to process part of a request in the file system), a synchronousĬlass will essentially render the service 'deaf' while one request isīeing handled - which may be for a very long time if a client is slow an HTTP server, where allĭata is stored externally (e.g. On the other hand, if you are building e.g. Locks to avoid two requests that come in nearly simultaneous to apply You can use a threading server, but you will probably have to use Kept in the parent process and passed to each child). Modifications in the child process would never reach the initial state Of course, you still have to use your head!įor instance, it makes no sense to use a forking server if the serviceĬontains state in memory that can be modified by requests (since the Subclasses StreamRequestHandler or DatagramRequestHandler. This can be hidden by using the request handler The request handler class must be different for datagram or stream Various versions of the service by combining one of the server classes To implement a service, you must derive a class fromīaseRequestHandler and redefine its handle() method. The behavior of the underlying server mechanism. In UDPServer! Setting the various member variables also changes The Mix-in class must come first, since it overrides a method defined Instance, a threading UDP server class is created as follows:Ĭlass ThreadingUDPServer(ThreadingMixIn, UDPServer): pass Using the ForkingMixIn and ThreadingMixIn mix-in classes. Stream server is the address family, which is simply repeated in bothįorking and threading versions of each type of server can be created UnixStreamServer - the only difference between an IP and a Unix Note that UnixDatagramServer derives from UDPServer, not from There are five classes in an inheritance diagram, four of which represent (There's also the issue that a deep class hierarchy The classes in this module favor the server type that is simplest to threading (each request is handled by a new thread)

forking (each request is handled by a new process)

synchronous (one request is handled at a time) (This is actually a hook for any processing that needs to lookĪt the request before anything else, e.g.

SOCKETSERVER PYTHON 3 INSTALL VERIFICATION

client address verification before further looking at the request TCP)įor request-based servers (including socket-based): AF_INET: IP (Internet Protocol) sockets (default) This module tries to capture the various aspects of defining a server: BaseServer Class _init_ Function server_activate Function serve_forever Function shutdown Function service_actions Function handle_request Function _handle_request_noblock Function handle_timeout Function verify_request Function process_request Function server_close Function finish_request Function shutdown_request Function close_request Function handle_error Function _enter_ Function _exit_ Function TCPServer Class _init_ Function server_bind Function server_activate Function server_close Function fileno Function get_request Function shutdown_request Function close_request Function UDPServer Class get_request Function server_activate Function shutdown_request Function close_request Function ForkingMixIn Class collect_children Function handle_timeout Function service_actions Function process_request Function server_close Function _Threads Class append Function pop_all Function join Function reap Function _NoThreads Class append Function join Function ThreadingMixIn Class process_request_thread Function process_request Function server_close Function ForkingUDPServer Class ForkingTCPServer Class ThreadingUDPServer Class ThreadingTCPServer Class UnixStreamServer Class UnixDatagramServer Class ThreadingUnixStreamServer Class ThreadingUnixDatagramServer Class BaseRequestHandler Class _init_ Function setup Function handle Function finish Function StreamRequestHandler Class setup Function finish Function _SocketWriter Class _init_ Function writable Function write Function fileno Function DatagramRequestHandler Class setup Function finish Function

Socketserver python 3 install