On 23/06/2015 7:04 p.m., vivek singh wrote: > what is ZPH > This explains <http://zph.bratcheda.org/> The squid parts were added to Squid-3.x as the qos_flows directive. BUT, copying a TOS flag from one TCP connection to another only works if one is using HTTP/1.0 non-persistent connections (HTTP/1.1 pipeline and persistence make outbound have incorrect TOS values), has a patched Linux kernel (no other OS support it, nor Linux newer than 2.6.35 apparently). > Vivek Kumar Singh > J.T.O./ITPC-KOL > Mobile 08902000538 > Landline 033-23211548 > > > On Tue, Jun 23, 2015 at 8:49 AM, Dan Charlesworth wrote: > >> It's also worth pointing out that your messages are getting flagged as >> Spam by Gmail, which probably isn't helping visibility. >> >> On 23 June 2015 at 06:11, mohammad wrote: >> >>> why is no-one answering this ?!! >>> >>> BTW, i tried the kernel patch 2.6.35 from ZPH, it worked intermittently, >>> and >>> stopped working after a squid re-build. AFAIK, thats the best anyone has had TOS preserve-miss working since Linux 3.0 came out. The last attempt I helped with (sometime way back around 2012/2013) had to translate the TOS value on client connection into a netfilter MASK value, then use the MASK preserve-miss, and translate from MASk to TOS on the server connection. Good luck with that though success was also somewhat intermittent. As mentioned above HTTP/1.1 high performance features can break it. Even normal HTTP operations such as revalidation can cause problems because HTTP is stateless - the inbound and outbound TCP connections are *not 1:1 related*. Amos _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
