nghttp3_buf_left
================

Synopsis
--------

*#include <nghttp3/nghttp3.h>*

.. function:: size_t nghttp3_buf_left(const nghttp3_buf *buf)

    
    `nghttp3_buf_left` returns the number of additional bytes which can
    be written to the underlying buffer.  In other words, it returns
    :member:`buf->end <nghttp3_buf.end>` - :member:`buf->last
    <nghttp3_buf.last>`.