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Add nghttp2_session_request_allowed() API function

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This function is useful for the client application to know that there
is a chance that request can be sent.  If this function returns 0,
there is zero chance to make a request.

This commit also set error_code passed to
nghttp2_on_stream_close_callback to NGHTTP2_REFUSED_STREAM if request
is not sent.
This commit is contained in:
Tatsuhiro Tsujikawa
2015-10-29 22:49:27 +09:00
parent ad395f0603
commit 1c37abc0dd
4 changed files with 32 additions and 0 deletions
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17
lib/includes/nghttp2/nghttp2.h
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@@ -3479,6 +3479,23 @@ NGHTTP2_EXTERN int nghttp2_submit_goaway(nghttp2_session *session,
NGHTTP2_EXTERN int32_t
nghttp2_session_get_last_proc_stream_id(nghttp2_session *session);
/**
* @function
*
* Returns nonzero if new request can be sent from local endpoint.
*
* This function return 0 if request is not allowed for this session.
* There are several reasons why request is not allowed. Some of the
* reasons are: session is server; stream ID has been spent; GOAWAY
* has been sent or received.
*
* The application can call `nghttp2_submit_request()` without
* consulting this function. In that case, `nghttp2_submit_request()`
* may return error. Or, request is failed to sent, and
* :type:`nghttp2_on_stream_close_callback` is called.
*/
NGHTTP2_EXTERN int nghttp2_session_request_allowed(nghttp2_session *session);
/**
* @function
*