##### posix::stream_descriptor::non_blocking (1 of 3 overloads)

Inherited from posix::descriptor.

Gets the non-blocking mode of the descriptor.

    bool non_blocking() const;

###### Return Value

`true` if the descriptor's synchronous operations will fail with `asio::error::would_block` if they are unable to perform the requested operation immediately. If `false`, synchronous operations will block until complete.

###### Remarks

The non-blocking mode has no effect on the behaviour of asynchronous operations. Asynchronous operations will never fail with the error `asio::error::would_block`.