nghttp3_conn_add_write_offset
=============================

Synopsis
--------

*#include <nghttp3/nghttp3.h>*

.. function:: int nghttp3_conn_add_write_offset(nghttp3_conn *conn, int64_t stream_id, size_t n)

    
    `nghttp3_conn_add_write_offset` tells *conn* the number of bytes
    *n* for stream denoted by *stream_id* QUIC stack accepted.
    
    If stream has no data to send but just sends fin (closing the write
    side of a stream), the number of bytes sent is 0.  It is important
    to call this function even if *n* is 0 in this case.  It is safe to
    call this function if *n* is 0.
    
    `nghttp3_conn_writev_stream` must be called before calling this
    function to get data to send, and those data must be fed into QUIC
    stack.
    
    If a stream denoted by *stream_id* is not found, this function
    returns 0.
    
    This function returns 0 if it succeeds, or one of the following
    negative error codes:
    
    :macro:`NGHTTP3_ERR_NOMEM`
        Out of memory.