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### windows::random_access_handle

Provides random-access handle functionality.

    class random_access_handle :
      public windows::overlapped_handle

##### Types

Name | Description
--- | ---
executor_type | The type of the executor associated with the object.
lowest_layer_type | An overlapped_handle is always the lowest layer.
native_handle_type | The native representation of a handle.

##### Member Functions

Name | Description
--- | ---
assign | Assign an existing native handle to the handle.
async_read_some_at | Start an asynchronous read at the specified offset.
async_write_some_at | Start an asynchronous write at the specified offset.
cancel | Cancel all asynchronous operations associated with the handle.
close | Close the handle.
get_executor | Get the executor associated with the object.
get_io_context | (Deprecated: Use get_executor().) Get the io_context associated with the object.
get_io_service | (Deprecated: Use get_executor().) Get the io_context associated with the object.
is_open | Determine whether the handle is open.
lowest_layer | Get a reference to the lowest layer. Get a const reference to the lowest layer.
native_handle | Get the native handle representation.
operator= | Move-assign a random_access_handle from another.
random_access_handle | Construct a random_access_handle without opening it. Construct a random_access_handle on an existing native handle. Move-construct a random_access_handle from another.
read_some_at | Read some data from the handle at the specified offset.
write_some_at | Write some data to the handle at the specified offset.

The `windows::random_access_handle` class provides asynchronous and blocking random-access handle functionality.

##### Thread Safety

Distinct objects: Safe.

Shared objects: Unsafe.

##### Requirements

Header: `boost/asio/windows/random_access_handle.hpp`

Convenience header: `boost/asio.hpp`