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Re: http/2 GET occasional hang

From: Francisco Moraes <>
Date: Mon, 30 Nov 2015 12:51:54 -0500

I've used a large XML file such as the one from here:

And used curl like this:

./curl --http2 --tcp-nodelay -X GET http://$HOST:$PORT/auction.xml

When the issue occurs, I see the following output from curl:

   % Total % Received % Xferd Average Speed Time Time Time
                                  Dload Upload Total Spent Left Speed
100 2261k 0 2261k 0 0 37594 0 --:--:-- 0:01:01
--:--:-- 0curl: (56) Unexpected EOF

  Note that the transfer is 100% complete but for some reason curl
didn't think it was complete. Does it wait for the connection to be
closed? It has received all the data correctly as I was able to confirm
that via --trace-ascii option, so I don't know why it has not closed the
connection as expected.


On 11/30/2015 12:09 PM, Daniel Stenberg wrote:
> On Mon, 30 Nov 2015, Francisco Moraes wrote:
>> I am testing my HTTP/2 server and I am getting an occasional hang
>> when transferring a 2M file using http to http/2 upgrade. I've done a
>> packet capture and I see that the data has been sent out completely
>> by the server and the last DATA frame is marked with end stream flag,
>> but curl seems to hang (version 7.44.0).
>> Were there any known issues with that version? I have not been able
>> to recreate the issue with the trace file or verbose flag though.
>> Any thoughts?
> I can't recall any such bugfix, even if we've done a few changes to
> the http2 code since that version. Possibly your nghttp2 version could
> also be involved.
> Is there a way for us to try to reproduce your case?

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Received on 2015-11-30