Christopher Cantwell
2019-Jun-25 02:59 UTC
[Icecast] EROR util/util_http_select_best Input string does not parse as KVA. Selecting first option.
Greetings,
I use Icecast for the live airing of my open phones podcast, and we've
recently had some trouble with malicious actors attempting to disrupt the
production in various ways, most of which are beyond the scope of this
inquiry.
Today the Icecast feed kept disconnecting and resetting the listener count.
This happens on rare occasions, and I usually accept this as a noisy
neighbor problem on my inexpensive VPS. Today it was probably more than a
dozen times during a two hour show. On the prior episode, my peak listener
count exceeded recent records, and I thought perhaps it was the hostiles
trying to flood me with requests.
After the show, I attempted to check the error log to see if I could
determine what caused the trouble, but the log is being flooded with what I
presume is an unrelated error multiple times per second. I've never checked
the log before, so it is entirely possible this has been happening the
entire time the server has been up.
Other than today's disconnects, everything seems to be working fine, so the
error doesn't seem to be causing any disruptions on its own, but it is
preventing me from troubleshooting other issues.
root at radio:/var/log/icecast2# tail error.log
[2019-06-24 22:31:21] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:22] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:22] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:22] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:22] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:22] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:23] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:23] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:23] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:23] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
root at radio:/var/log/icecast2# tail error.log
[2019-06-24 22:31:23] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:23] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:24] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:24] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:24] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:24] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:24] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:24] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:25] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
[2019-06-24 22:31:25] EROR util/util_http_select_best Input string does
not parse as KVA. Selecting first option.
root at radio:/var/log/icecast2#
Searching didn't turn up much. A search for Icecast util_http_select_best
turned up this Github page
https://github.com/xiph/Icecast-Server/blob/master/src/util.h
Searching icecast.xml for header, I find what I think is a default setting,
and seems to be working just fine...
<!-- Global header settings
Headers defined here will be returned for every HTTP request to
Icecast.
The ACAO header makes Icecast public content/API by default
This will make streams easier embeddable (some HTML5 functionality
needs it).
Also it allows direct access to e.g. /status-json.xsl from other
sites.
If you don't want this, comment out the following line or read up
on CORS.
-->
<http-headers>
<header name="Access-Control-Allow-Origin"
value="*" />
</http-headers>
Server status can be seen here
https://radio.radicalagenda.com:8443/status.xsl
Thanks for your consideration.
--
Regards,
Christopher Cantwell
Blogger at ChristopherCantwell.com
Host of Radical Agenda <http://radicalagenda.com>
631-791-5842
Skype: Radical Agenda
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.xiph.org/pipermail/icecast/attachments/20190624/15d708f3/attachment.html>
Philipp Schafft
2019-Jun-26 14:25 UTC
[Icecast] EROR util/util_http_select_best Input string does not parse as KVA. Selecting first option.
Good afternoon, On Mon, 2019-06-24 at 22:59 -0400, Christopher Cantwell wrote:> Greetings, > > I use Icecast for the live airing of my open phones podcast, and we've > recently had some trouble with malicious actors attempting to disrupt the > production in various ways, most of which are beyond the scope of this > inquiry. > > Today the Icecast feed kept disconnecting and resetting the listener count. > This happens on rare occasions, and I usually accept this as a noisy > neighbor problem on my inexpensive VPS. Today it was probably more than a > dozen times during a two hour show. On the prior episode, my peak listener > count exceeded recent records, and I thought perhaps it was the hostiles > trying to flood me with requests.By resetting counts you mean the reset of the stats when a source disconnects?> After the show, I attempted to check the error log to see if I could > determine what caused the trouble, but the log is being flooded with what I > presume is an unrelated error multiple times per second. I've never checked > the log before, so it is entirely possible this has been happening the > entire time the server has been up. > > Other than today's disconnects, everything seems to be working fine, so the > error doesn't seem to be causing any disruptions on its own, but it is > preventing me from troubleshooting other issues. > > root at radio:/var/log/icecast2# tail error.log > [2019-06-24 22:31:21] EROR util/util_http_select_best Input string does > not parse as KVA. Selecting first option. > [...] > > Searching didn't turn up much. A search for Icecast util_http_select_best > turned up this Github page > https://github.com/xiph/Icecast-Server/blob/master/src/util.hThat message is reported if a Accept:-header can not be parsed (including the header is not present). Icecast then uses the default ("first option"). This header is used to allow Icecast sending a response in a format preferred by the client. If none is provided Icecast will just respond in the format that Icecast thinks is best. If that error happens very often it is likely a client that floods the server. See the access.log. It should indicate such a client.> Searching icecast.xml for header, I find what I think is a default setting, > and seems to be working just fine... > > <!-- Global header settings > Headers defined here will be returned for every HTTP request to > Icecast. > > The ACAO header makes Icecast public content/API by default > This will make streams easier embeddable (some HTML5 functionality > needs it). > Also it allows direct access to e.g. /status-json.xsl from other > sites. > If you don't want this, comment out the following line or read up > on CORS. > --> > <http-headers> > <header name="Access-Control-Allow-Origin" value="*" /> > </http-headers>This is not related to configuration. It's purely about the server and the client negotiating options. See here: https://en.wikipedia.org/wiki/Content_negotiation (Relevant standard is RFC 7231 Section 5.3.2) With best regards, -- Philipp Schafft (CEO/Geschäftsführer) Telephon: +49.3535 490 17 92 Löwenfelsen UG (haftungsbeschränkt) Registration number: Bickinger Straße 21 HRB 12308 CB 04916 Herzberg (Elster) VATIN/USt-ID: Germany DE305133015 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 490 bytes Desc: This is a digitally signed message part URL: <http://lists.xiph.org/pipermail/icecast/attachments/20190626/424c1d97/attachment.sig>