shall be obtained by performing associated_allocator < CompletionHandler , Executor1 >:: get ( handler , alloc1 ).

python multiconn-server.py 127.0.0.1 65432 Listening on ('127.0.0.1', 65432) Accepted connection from ('127.0.0.1', 61354) Accepted connection from ('127.0.0.1', 61355) Echoing b'Message 1 from client.Message 2 from client.' to ('127.0.0.1', 61354) Echoing b'Message 1 from client.Message 2 from client.' to ('127.0.0.1', 61355) Closing connection to ('127.0.0.1', 61354) Closing connection to ('127.0.0.1', 61355) Copied! In the next two sections, you’ll create a server and client that handles multiple connections using a selector object created from the selectors module. Multi-Connection Server A response is created by calling other methods, depending on the content type. In this example application, a simple dictionary lookup is done for JSON requests when action == 'search'. For your own applications, you can define other methods that get called here. Now it’s time to run multiconn-server.py and multiconn-client.py. They both use command-line arguments. You can run them without arguments to see the options.template < class T , class Executor > class executor_wrapper { public : // types: typedef T wrapped_type ; typedef Executor executor_type ; // construct / copy / destroy: executor_wrapper ( T t , const Executor & ex ); executor_wrapper ( const executor_wrapper & other ) = default ; executor_wrapper ( executor_wrapper && other ) = default ; template < class U , class OtherExecutor > executor_wrapper ( const executor_wrapper < U , OtherExecutor >& other ); template < class U , class OtherExecutor > executor_wrapper ( executor_wrapper < U , OtherExecutor >&& other ); template < class U , class OtherExecutor > executor_wrapper ( executor_arg_t , const Executor & ex , const executor_wrapper < U , OtherExecutor >& other ); template < class U , class OtherExecutor > executor_wrapper ( executor_arg_t , const Executor & ex , executor_wrapper < U , OtherExecutor >&& other ); ~ executor_wrapper (); // executor wrapper access: T & unwrap () noexcept ; const T & unwrap () const noexcept ; executor_type get_executor () const noexcept ; // executor wrapper invocation: template < class ... Args > result_of_t < T &( Args &&...)> operator ()( Args &&... args ); template < class ... Args > result_of_t < const T &( Args &&...)> operator ()( Args &&... args ) const ; private : Executor ex_ ; // exposition only T wrapped_ ; // exposition only }; template < class T , class Executor , class Signature > struct completion_handler_type < executor_wrapper < T , Executor >, Signature > { typedef executor_wrapper < completion_handler_type_t < T , Signature >, Executor > type ; }; template < class T , class Executor > class async_result < executor_wrapper < T , Executor >>; template < class T , class Executor , class ProtoAllocator > struct associated_allocator < executor_wrapper < T , Executor >, ProtoAllocator >; template < class T , class Executor , class Executor1 > struct associated_executor < executor_wrapper < T , Executor >, Executor1 >;

template < class T > associated_allocator_t < T > get_associated_allocator ( const T & t ); template < class T , class ProtoAllocator > associated_allocator_t < T , ProtoAllocator > get_associated_allocator ( const T & t , const ProtoAllocator & a ); enum class fork_event { prepare , parent , child }; class execution_context ; class service_already_exists ; template < class Service > Service & use_service ( execution_context & ctx ); template < class Service , class ... Args > Service & make_service ( execution_context & ctx , Args &&... args ); template < class Service > bool has_service ( execution_context & ctx ) noexcept ; template < class T > struct is_executor : false_type {}; struct executor_arg_t { }; constexpr executor_arg_t executor_arg = executor_arg_t (); template < class T , class Executor > struct uses_executor ; template < class T , class Executor = system_executor > struct associated_executor ; template < class T , class Executor = system_executor > using associated_executor_t = typename associated_executor < T , Executor >:: type ;Effects: Constructs an object of class executor_work, initializing ex_ with std :: move ( other . ex_ ) and owns_ The implementation provides a partial specialization of async_result that meets the async_result specialization requirements. template < class T , class Executor , class ProtoAllocator > struct associated_allocator < executor_wrapper < T , Executor >, ProtoAllocator > { typedef associated_allocator_t < T , ProtoAllocator > type ; static type get ( const executor_wrapper < T , Executor >& w , const ProtoAllocator & a = ProtoAllocator ()) noexcept ; }; Attaching ‘F’ and coaxial connectors to coaxial cable. Attaching ‘F’ and coaxial connectors to coaxial cable

Express initializes app to be a function handler that you can supply to an HTTP server (as seen in line 4). template < class CompletionToken > auto async_xyz ( T1 t1 , T2 t2 , CompletionToken && token ) { async_completion < CompletionToken , void ( R1 r1 , R2 r2 )> init ( token ); // initiate the operation and cause init.completion_handler to be invoked // with the result return init . result . get (); }

This example application reflects what types of messages a client and server could reasonably use. You’re far beyond toy echo clients and servers at this point!