[squid-users] Squid doesn't use domain name as a request URL in access.log when splice at step 3 occurs

[Garri Djavadyan]

I noticed that Squid doesn't use gathered domain name information for
%ru in access.log when splice action is performed at step 3 for
intercepted traffic. The format code ssl::>sni is available at both
steps. Below are examples used to verify the behavior using Squid
3.5.22, but the results are same for Squid 4.0.16.

The request used on client:

$ curl https://www.openssl.org/ > /dev/null


The configuration for splice at step 2:

# diff etc/squid.conf.default etc/squid.conf
73a74,78
> https_port 3129 intercept ssl-bump cert=etc/ssl_cert/myCA.pem
generate-host-certificates
> acl StepSplice at_step SslBump2
> ssl_bump splice StepSplice
> ssl_bump peek all
> logformat squid      %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %[un
%Sh/%<a %mt %ssl::>sni


The result:

1478256091.609   1028 172.16.0.21 TAG_NONE/200 0 CONNECT
104.124.119.14:443 - HIER_NONE/- - www.openssl.org
1478256091.609   1026 172.16.0.21 TCP_TUNNEL/200 9807 CONNECT www.opens
sl.org:443 - ORIGINAL_DST/104.124.119.14 - www.openssl.org


-----
The configuration for splice at step 3:

# diff etc/squid.conf.default etc/squid.conf
73a74,78
> https_port 3129 intercept ssl-bump cert=etc/ssl_cert/myCA.pem
generate-host-certificates
> acl StepSplice at_step SslBump3
> ssl_bump splice StepSplice
> ssl_bump peek all
> logformat squid      %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %[un
%Sh/%<a %mt %ssl::>sni


The result:
1478256303.420    574 172.16.0.21 TCP_TUNNEL/200 6897 CONNECT
104.124.119.14:443 - ORIGINAL_DST/104.124.119.14 - www.openssl.org


Is it a bug or intended behavior? Thanks.

Garri