On 2023-09-12 15:50, Loučanský Lukáš wrote:
2023/09/12 19:12:03 kid4| ERROR: Squid BUG: assurance failed:
tok.skip(WellKnownUrlPathPrefix())
Request:
GET cache_object://squid_ip/info HTTP/1.0
Host: squid_ip
User-Agent: squidclient/4.6
Accept: */*
Connection: close
Thank you for sharing this detail. I can now reproduce this problem.
You are suffering from a bug in Squid v6.3 commit 6695897 (which was
incorrectly attributed to me). Until that bug is addressed, cache
manager requests using the deprecated cache_object scheme (e.g., those
emitted by older squidclients) will trigger the above
WellKnownUrlPathPrefix assertion in Squid v6.3.
I have attached a patch that fixes this v6.3 bug in my tests.
Sending HTTP request ...
done.
HTTP/1.1 404 Not Found
Server: squid
Mime-Version: 1.0
Date: Tue, 12 Sep 2023 19:09:41 GMT
Content-Type: text/html;charset=utf-8
Content-Length: 13057
X-Squid-Error: ERR_INVALID_URL 0
Cache-Status: proxy;detail=no-cache
Via: 1.1 proxy (squid)
Connection: close
This is obviously calling for url cache_object://squid_ip/info which I
think is obsolete. Now I went with the new squidclient:
./squidclient -h squid_ip -p squid_port -vv mgr:info
Request:
GET http://squid_ip:squid_port/squid-internal-mgr/info HTTP/1.0
Host: 10.50.1.5:3127
User-Agent: squidclient/6.3
Accept: */*
Connection: close
But it seems squid is then trying to open it's
visible_hostname:squid_port/squid-internal-mgr/ and due my DNS setting
it is its WAN IP - so it's connecting to its outside IP with its outside
IP which is not in the http_access manager allow list (now it is and the
newer squidclient works).
You are in Squid Bug 5283 territory here:
https://bugs.squid-cache.org/show_bug.cgi?id=5283
In a Linux test environment, I can work around those "outside IP"
problems by adding "-l 127.0.0.1" option to squidclient, forcing
squidclient to connect to Squid from the loopback address. IIRC, that
"-l" trick does not work in environments that do not support
from-localhost connections to "outside IPs" on the same box (e.g., Windows).
HTH,
Alex.
-----Původní zpráva-----
Od: squid-users za uživatele Alex Rousskov
Odesláno: út 12.9.2023 19:28
Komu: squid-users@xxxxxxxxxxxxxxxxxxxxx
Předmět: Re: Squid BUG: assurance failed:
tok.skip(WellKnownUrlPathPrefix())
On 2023-09-12 13:06, Loučanský Lukáš wrote:
> Is this anyhow interesting?
Not really, IMO -- the problem happens earlier. I can confirm that you
are running v6.3-based code. Let's call that progress :-).
Can you share the a _pointer_ to a compressed ALL,9 cache.log file while
reproducing the problem using a single transaction?
https://wiki.squid-cache.org/SquidFaq/BugReporting#debugging-a-single-transaction <https://wiki.squid-cache.org/SquidFaq/BugReporting#debugging-a-single-transaction>
Alex.
>
> 2023/09/12 18:47:04.267 kid4| 24,8| SBuf.cc(30) SBuf: SBuf15514952
created
> 2023/09/12 18:47:04.267 kid4| 24,8| SBuf.cc(30) SBuf: SBuf15514953
created
> 2023/09/12 18:47:04.267 kid4| 24,8| SBuf.cc(30) SBuf: SBuf15514954
created
> 2023/09/12 18:47:04.267 kid4| 24,7| SBuf.cc(85) assign: assigning
> SBuf15514952 from SBuf15514912
> 2023/09/12 18:47:04.267 kid4| 24,8| SBuf.cc(38) SBuf: SBuf15514955
> created from id SBuf15514915
> 2023/09/12 18:47:04.267 kid4| 24,8| SBuf.cc(445) startsWith:
> SBuf15514955 startsWith SBuf125812, caseSensitive: 0
> 2023/09/12 18:47:04.267 kid4| 24,8| SBuf.cc(447) startsWith: no, too
short
> 2023/09/12 18:47:04.267 kid4| 24,8| Tokenizer.cc(185) skip: no match,
> not skipping '/squid-internal-mgr/'
> 2023/09/12 18:47:04 kid4| ERROR: Squid BUG: assurance failed:
> tok.skip(WellKnownUrlPathPrefix())
> 2023/09/12 18:47:04.268 kid4| 24,8| SBuf.cc(70) ~SBuf: SBuf15514955
> destructed
>
>
> BTW debug 24,9 makes pretty big log files... :-)
>
> L
>
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Restore support for legacy cache_object cache manager requests
Squid v6.3 commit 6695897 (i.e. a backport of master/v7 commit 3c383cc)
accidentally removed support of legacy cache_object URLs (that master/v7
does not support) from Squid v6. This fix restores that support in v6.
diff --git a/src/cache_manager.cc b/src/cache_manager.cc
index bb70216..dbb99d9 100644
--- a/src/cache_manager.cc
+++ b/src/cache_manager.cc
@@ -189,9 +189,9 @@ Mgr::Command::Pointer
CacheManager::ParseUrl(const AnyP::Uri &uri)
{
Parser::Tokenizer tok(uri.path());
- Assure(tok.skip(WellKnownUrlPathPrefix()));
+ Assure(tok.skip(WellKnownUrlPathPrefix()) || tok.skip('/'));
Mgr::Command::Pointer cmd = new Mgr::Command();
cmd->params.httpUri = SBufToString(uri.absolute());
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