nghttp2_session_set_stream_user_data

Synopsis

#include <nghttp2/nghttp2.h>

.. function:: int nghttp2_session_set_stream_user_data(nghttp2_session *session, int32_t stream_id, void *stream_user_data)

Sets the *stream_user_data* to the stream denoted by the
*stream_id*.  If a stream user data is already set to the stream,
it is replaced with the *stream_user_data*.  It is valid to specify
``NULL`` in the *stream_user_data*, which nullifies the associated
data pointer.

It is valid to set the *stream_user_data* to the stream reserved by
PUSH_PROMISE frame.

This function returns 0 if it succeeds, or one of following
negative error codes:

:enum:`nghttp2_error.NGHTTP2_ERR_INVALID_ARGUMENT`
    The stream does not exist