[sclug] Squid Webproxy - partial page loads

[Mark East]

Packet capture is your best shot. You can use tcpdump to get a capture 
and then open it in Wireshark. This should show you what is happening in 
the transaction and will hopefully give you a clue to what is happening. 
Try to get the capture when minimal traffic is going through the proxy 
though as it can make it a bit more difficult if there is a lot going 
on. If you have trouble I could take a look for you tonight/tomorrow if 
it helps?

tcpdump -v -s 65535 -w capture.pcap -i <network interface>

Mark

On 26/11/12 12:47, Adam Thompson wrote:
> Dear SCLUG,
>
> I have a Squid 3.1.10 proxy, which for the mostpart works fine.  It's on
> CentOS 6.2, running as a KVM guest.
>
> However, some sites are prone to partial page loading.  This includes some
> pages that are hosted on apache on that same server, as well as some
> external sites (ripe.net and apnic.net spring to mind).
>
> I thought this might have been due to some compression used, but there's no
> apparent common factor between these pages.
>
> The Squid access log shows a TCP_MISS/200 on one of the requests which
> resulted in a partial page load from the site that's local on that
> machine.  The apache access log shows a 200 OK.  The browser shows a
> partially loaded page.  It's as if the data just stopped halfway down the
> page.
>
> I'm not sure how I can go about tracking down the cause of this issue.  Any
> suggestions?
>
> Many thanks,
>