Properties Execution Customisation Points prefer query require require_concept Traits can_prefer can_query can_require can_require_concept is_nothrow_prefer is_nothrow_query is_nothrow_require is_nothrow_require_concept prefer_result query_result require_result require_concept_result Class Templates execution::any_executor Classes execution::bad_executor execution::invocable_archetype Type Traits execution::is_executor Concepts executor Properties execution::allocator_t execution::blocking_t execution::blocking_t::possibly_t execution::blocking_t::always_t execution::blocking_t::never_t execution::blocking_adaptation_t execution::blocking_adaptation_t::disallowed_t execution::blocking_adaptation_t::allowed_t execution::context_t execution::context_as_t execution::inline_exception_handling_t execution::inline_exception_handling_t::propagate_t execution::inline_exception_handling_t::capture_t execution::inline_exception_handling_t::terminate_t execution::mapping_t execution::mapping_t::thread_t execution::mapping_t::new_thread_t execution::mapping_t::other_t execution::occupancy_t execution::outstanding_work_t execution::outstanding_work_t::untracked_t execution::outstanding_work_t::tracked_t execution::prefer_only execution::relationship_t execution::relationship_t::fork_t execution::relationship_t::continuation_t Property Objects execution::allocator execution::blocking execution::blocking.possibly execution::blocking.always execution::blocking.never execution::blocking_adaptation execution::blocking_adaptation.disallowed execution::blocking_adaptation.allowed execution::context execution::context_as execution::mapping execution::mapping.thread execution::mapping.new_thread execution::mapping.other execution::occupancy execution::outstanding_work execution::outstanding_work.untracked execution::outstanding_work.tracked execution::relationship execution::relationship.fork execution::relationship.continuation Core Classes any_completion_executor any_io_executor bad_executor cancellation_signal cancellation_slot cancellation_state cancellation_type config config_service config_from_concurrency_hint config_from_env config_from_string config_service coroutine detached_t execution_context execution_context::id execution_context::service execution_context::service_maker executor executor_arg_t invalid_service_owner inline_executor io_context io_context::executor_type io_context::service io_context::strand multiple_exceptions no_error_t partial_as_tuple partial_redirect_error service_already_exists static_thread_pool system_context system_executor this_coro::cancellation_state_t this_coro::executor_t thread_pool thread_pool::executor_type yield_context Class Templates any_completion_handler any_completion_handler_allocator append_t as_tuple_t async_completion awaitable basic_inline_executor basic_io_object (deprecated) basic_system_executor basic_yield_context cancel_after_t cancel_at_t cancellation_filter cancellation_slot_binder consign_t deferred_t disposition_traits executor_binder executor_work_guard experimental::as_single_t experimental::basic_channel experimental::basic_concurrent_channel experimental::channel_traits experimental::coro experimental::parallel_group experimental::promise experimental::ranged_parallel_group experimental::use_coro_t experimental::use_promise_t experimental::wait_for_all experimental::wait_for_one experimental::wait_for_one_error experimental::wait_for_one_success inline_or_executor io_context::basic_executor_type partial_allocator_binder partial_cancel_after partial_cancel_after_timer partial_cancel_at partial_cancel_at_timer partial_cancellation_slot_binder partial_executor_binder partial_immediate_executor_binder partial_redirect_disposition prepend_t recycling_allocator redirect_disposition_t redirect_error_t strand thread_pool::basic_executor_type use_awaitable_t use_future_t Free Functions add_service (deprecated) append asio_handler_is_continuation async_compose async_immediate async_initiate bind_allocator bind_cancellation_slot bind_executor bind_immediate_executor cancel_after cancel_at co_composed co_spawn composed consign defer dispatch experimental::as_single experimental::make_parallel_group get_associated_allocator get_associated_cancellation_slot get_associated_executor get_associated_immediate_executor has_service make_service inline_or make_strand make_work_guard post prepend redirect_disposition redirect_error spawn this_coro::reset_cancellation_state this_coro::throw_if_cancelled throw_exception to_exception_ptr use_service Special Values as_tuple deferred detached executor_arg experimental::use_coro experimental::use_promise no_error this_coro::cancellation_state this_coro::executor use_awaitable use_future Error Codes error::basic_errors error::netdb_errors error::addrinfo_errors error::misc_errors Bind Placeholders placeholders::bytes_transferred placeholders::endpoint placeholders::error placeholders::iterator placeholders::results placeholders::signal_number Type Traits associated_allocator associated_cancellation_slot associated_executor associated_immediate_executor associator async_result completion_signature_of default_completion_token is_async_operation is_executor uses_executor Type Requirements Asynchronous operations CancellationHandler CancellationSlot Disposition ExecutionContext Executor Handler NullaryToken Service Buffers and Buffer-Oriented Operations Classes const_buffer mutable_buffer const_registered_buffer mutable_registered_buffer null_buffers (deprecated) streambuf registered_buffer_id Class Templates basic_streambuf buffer_registration buffered_read_stream buffered_stream buffered_write_stream buffers_iterator dynamic_string_buffer dynamic_vector_buffer Free Functions async_read async_read_at async_read_until async_write async_write_at buffer buffer_copy buffer_size buffer_sequence_begin buffer_sequence_end buffers_begin buffers_end dynamic_buffer read read_at read_until register_buffers transfer_all transfer_at_least transfer_exactly write write_at Type Traits is_const_buffer_sequence is_dynamic_buffer is_dynamic_buffer_v1 is_dynamic_buffer_v2 is_match_condition is_mutable_buffer_sequence is_read_buffered is_write_buffered Type Requirements Read and write operations AsyncRandomAccessReadDevice AsyncRandomAccessWriteDevice AsyncReadStream AsyncWriteStream CompletionCondition ConstBufferSequence DynamicBuffer DynamicBuffer_v1 DynamicBuffer_v2 MutableBufferSequence ReadHandler ReadToken SyncRandomAccessReadDevice SyncRandomAccessWriteDevice SyncReadStream SyncWriteStream WriteHandler WriteToken Networking Classes generic::datagram_protocol generic::datagram_protocol::endpoint generic::datagram_protocol::socket generic::raw_protocol generic::raw_protocol::endpoint generic::raw_protocol::socket generic::seq_packet_protocol generic::seq_packet_protocol::endpoint generic::seq_packet_protocol::socket generic::stream_protocol generic::stream_protocol::endpoint generic::stream_protocol::iostream generic::stream_protocol::socket ip::address ip::address_v4 ip::address_v4_iterator ip::address_v4_range ip::address_v6 ip::address_v6_iterator ip::address_v6_range ip::bad_address_cast ip::icmp ip::icmp::endpoint ip::icmp::resolver ip::icmp::socket ip::network_v4 ip::network_v6 ip::resolver_base ip::resolver_query_base ip::tcp ip::tcp::acceptor ip::tcp::endpoint ip::tcp::iostream ip::tcp::resolver ip::tcp::socket ip::udp ip::udp::endpoint ip::udp::resolver ip::udp::socket ip::v4_mapped_t socket_base Free Functions async_connect connect ip::host_name ip::make_address ip::make_address_v4 ip::make_address_v6 ip::make_network_v4 ip::make_network_v6 Class Templates basic_datagram_socket basic_raw_socket basic_seq_packet_socket basic_socket basic_socket_acceptor basic_socket_iostream basic_socket_streambuf basic_stream_socket generic::basic_endpoint ip::basic_endpoint ip::basic_resolver ip::basic_resolver_entry ip::basic_resolver_iterator ip::basic_resolver_results ip::basic_resolver_query Socket Options ip::multicast::enable_loopback ip::multicast::hops ip::multicast::join_group ip::multicast::leave_group ip::multicast::outbound_interface ip::tcp::no_delay ip::unicast::hops ip::v6_only socket_base::broadcast socket_base::debug socket_base::do_not_route socket_base::enable_connection_aborted socket_base::keep_alive socket_base::linger socket_base::receive_buffer_size socket_base::receive_low_watermark socket_base::reuse_address socket_base::send_buffer_size socket_base::send_low_watermark I/O Control Commands socket_base::bytes_readable Type Requirements Synchronous socket operations Asynchronous socket operations AcceptableProtocol AcceptHandler AcceptToken ConnectCondition ConnectHandler ConnectToken Endpoint EndpointSequence GettableSocketOption InternetProtocol IoControlCommand IteratorConnectHandler IteratorConnectToken MoveAcceptHandler MoveAcceptToken Protocol RangeConnectHandler RangeConnectToken ResolveHandler ResolveToken SettableSocketOption Timers SSL Serial Ports Signal Handling Classes deadline_timer (deprecated) high_resolution_timer steady_timer system_timer Class Templates basic_deadline_timer (deprecated) basic_waitable_timer time_traits (deprecated) wait_traits Type Requirements TimeTraits (deprecated) WaitHandler WaitToken WaitTraits Classes ssl::context ssl::context_base ssl::host_name_verification ssl::stream_base ssl::verify_context Class Templates ssl::stream Error Codes ssl::error::stream_errors Type Requirements BufferedHandshakeHandler BufferedHandshakeToken HandshakeHandler HandshakeToken ShutdownHandler ShutdownToken Classes serial_port serial_port_base Class templates basic_serial_port Serial Port Options serial_port_base::baud_rate serial_port_base::flow_control serial_port_base::parity serial_port_base::stop_bits serial_port_base::character_size Type Requirements GettableSerialPortOption SettableSerialPortOption Classes signal_set Class Templates basic_signal_set Type Requirements SignalHandler SignalToken Files and Pipes POSIX-specific Windows-specific Class Templates basic_file basic_random_access_file basic_readable_pipe basic_stream_file basic_writable_pipe Classes file_base random_access_file readable_pipe stream_file writable_pipe Free Functions connect_pipe Classes local::seq_packet_protocol local::seq_packet_protocol::acceptor local::seq_packet_protocol::endpoint local::seq_packet_protocol::socket local::stream_protocol local::stream_protocol::acceptor local::stream_protocol::endpoint local::stream_protocol::iostream local::stream_protocol::socket local::datagram_protocol local::datagram_protocol::endpoint local::datagram_protocol::socket posix::descriptor posix::descriptor_base posix::stream_descriptor Free Functions local::connect_pair Class Templates local::basic_endpoint posix::basic_descriptor posix::basic_stream_descriptor Classes windows::object_handle windows::overlapped_handle windows::overlapped_ptr windows::random_access_handle windows::stream_handle Class Templates windows::basic_object_handle windows::basic_overlapped_handle windows::basic_random_access_handle windows::basic_stream_handle