nghttp3_conn_is_stream_writable
===============================

Synopsis
--------

*#include <nghttp3/nghttp3.h>*

.. function:: int nghttp3_conn_is_stream_writable(nghttp3_conn *conn, int64_t stream_id)

    
    `nghttp3_conn_is_stream_writable` returns nonzero if a stream
    identified by *stream_id* is writable.  It is not writable if:
    
    - the stream does not exist; or,
    - the stream is closed (e.g., `nghttp3_conn_close_stream` is
      called); or,
    - the stream is QUIC flow control blocked (e.g.,
      `nghttp3_conn_block_stream` is called); or,
    - the stream is input data blocked (e.g.,
      :macro:`NGHTTP3_ERR_WOULDBLOCK` is returned from
      :type:`nghttp3_read_data_callback`); or,
    - the stream is half-closed local (e.g.,
      `nghttp3_conn_shutdown_stream_write` is called).