Hi,

Previously if HTTP/2 traffic is appended to HTTP Upgrade response
header (thus they are in the same buffer), the trailing HTTP/2 traffic
is not processed and lost. The appended data is most likely SETTINGS
frame. If it is lost, nghttp2 library complains server does not obey
the HTTP/2 protocol and issues GOAWAY frame and curl eventually drops
connection. This patch fixes this problem and now trailing data is
processed.

See also https://github.com/tatsuhiro-t/nghttp2/issues/103

Best regards,
Tatsuhiro Tsujikawa

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