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nghttp2/doc/nghttp2_session_set_stream_user_data.rst

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+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:
+    
+    :macro:`nghttp2_error.NGHTTP2_ERR_INVALID_ARGUMENT`
+        The stream does not exist