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authorTatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>2015-05-20 23:11:43 +0900
committerDaniel Stenberg <daniel@haxx.se>2015-05-20 22:43:37 +0200
commitc175d184a2c254765d1a0d66978de4886b0a2ece (patch)
treeb0ecd1de471f97d43e4ad41f59f196512ac9615e /GIT-INFO
parentd5aab55b3353bec1d34a2e1434399d23db79b254 (diff)
http2: Faster http2 upload
Previously, when we send all given buffer in data_source_callback, we return NGHTTP2_ERR_DEFERRED, and nghttp2 library removes this stream temporarily for writing. This itself is good. If this is the sole stream in the session, nghttp2_session_want_write() returns zero, which means that libcurl does not check writeability of the underlying socket. This leads to very slow upload, because it seems curl only upload 16k something per 1 second. To fix this, if we still have data to send, call nghttp2_session_resume_data after nghttp2_session_send. This makes nghttp2_session_want_write() returns nonzero (if connection window still opens), and as a result, socket writeability is checked, and upload speed becomes normal.
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