nginx upstream closed when spdy is active

Wed Jun 10 08:00:40 UTC 2015

hi there
we have a problem while downloading files from our website while spdy is
enabled.

the download wont start and after a few seconds is runs to a timeoute.
if i disable spdy, the download is working.

what could that be.
The log files show me the following error

2015/06/10 09:26:14 [error] 2538#0: *6497287 upstream prematurely closed
connection while reading upstream, client: x.x.x.x, server: www.x.com,
request: "GET
/xxx/report.do?action=ApprovedProductsCSV&xxxx&dateFrom=14.04.2015
HTTP/1.1", upstream:
"http://xxxx:xxxx/xxx/report.do?action=ApprovedProductsCSV&xxx&dateFrom=14.04.2015",
host: "www.xxx.com", referrer:
"https://www.xxx.com/xxx/report.do?action=ApprovedProducts"

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,259482,259482#msg-259482