Bugs item #2943699, was opened at 2010-02-01 12:14
Message generated for change (Settings changed) made by bagder
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Category: http
Group: bad behaviour
Status: Open
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: aalbert (aalbert)
Assigned to: Daniel Stenberg (bagder)
Summary: Connection: Keep-Alive missing

Initial Comment:
According to the documentation, keep-alive is on by default, but can be set by --keepalive. In tests I performed, the Connection: header was missing and using --keepalive didn't help. I used WireShark to view the http. In fact the URL from which I was trying to download required Keep-Alive, so the download failed. Below is the User-Agent header (which shows the version). I'm running Vista SP2 32-bit.

User-Agent: curl/7.19.7 (i386-pc-win32) libcurl/7.19.7 zlib/1.2.3

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>Comment By: Daniel Stenberg (bagder)
Date: 2010-02-01 23:05

Message:
Christian is right, HTTP 1.1 does persistent connections by default so
there's nothing that needs to be said for that to work.

Secondly, the --keepalive option that already is enabled by default by
curl controls the TCP option to send keep-alives, it has nothing to do with
HTTP (or any other application level protocol) headers.

If you need custom headers, try -H/--header

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Comment By: Christian Roy (christiansroy)
Date: 2010-02-01 22:34

Message:
aalbert

From what I understand of HTTP, the protocol 1.1 (default) does not need
to send the header for keep-alive since that is the default.

For HTTP/1.0, the keep-alive is not on by default. So using the
--keepalive is useful then.

Could that explain it?

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Comment By: aalbert (aalbert)
Date: 2010-02-01 12:19

Message:
I should have included the command-line:

curl --keepalive --cookie "xxx=yyy"
http://user:pass@www.host.com/xxx/y.wmv

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Received on 2010-02-01