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Re: Squid 3.1.12 times out when trying to access MSDN

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On 27/05/11 19:42, Pandu Poluan wrote:
Hello list,

I've been experiencing a perplexing problem.

Squid 3.1.12 often times out when trying to access certain sites, most
notably MSDN. But it's still very fast when accessing other
non-problematic sites.

For instance, trying to access the following URL *always* result in timeout:

http://msdn.microsoft.com/en-us/library/aa302323.aspx

Trying to get the above URL using wget: No problem.

I've even opened up the http_access and miss_access:

http_access allow manager localhost
http_access deny manager
#http_access deny !Safe_ports
#http_access deny CONNECT !SSL_ports
#http_access allow localnet
http_access allow localhost
http_access allow pans_indonet
http_access deny all
miss_access allow pans_indonet
miss_access deny all

... where pans_indonet is the acl containing the whole network of my company.

Any pointers as to what I should check next?

Rgds,

msdn.microsoft.com DNS response to AAAA lookup is a successful CNAME, but with no IP addresses to connect to.

The behaviour you describe can appear if you have turned dns_v4_fallback OFF. Which disables A lookup (IPv4 connectivity) if there is any kind of successful AAAA, even a useless empty one like MSDN produces.


Also, "miss_access deny ..." prevents Squid fetching new content from the Internet. It's unclear why you would want to have miss_access in the config at all.

Amos
--
Please be using
  Current Stable Squid 2.7.STABLE9 or 3.1.12
  Beta testers wanted for 3.2.0.7 and 3.1.12.1


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