##### posix::stream_descriptor::wait (1 of 2 overloads)

Inherited from posix::descriptor.

Wait for the descriptor to become ready to read, ready to write, or to have pending error conditions.

    void wait(
        wait_type w);

This function is used to perform a blocking wait for a descriptor to enter a ready to read, write or error condition state.

###### Parameters

w

  Specifies the desired descriptor state.

###### Example

Waiting for a descriptor to become readable.

    asio::posix::stream_descriptor descriptor(io_context);
    ...
    descriptor.wait(asio::posix::stream_descriptor::wait_read);