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From Jason Strongman <jasonstrongman2...@gmail.com>
Subject Re: ATS 5.3.1 and proxy.config.net.sock_packet_tos_out
Date Wed, 16 Sep 2015 17:49:55 GMT
So I compiled 5.30, 5.3.2, and 6.0.0 and installed each in it's own directory.
I also placed each version on its own listening port. I then sent a
curl request to each
and watched via tcpdump as requests were sent out to the origin. Only
the 5.3.0 build
saw 'proxy.config.net.sock_packet_tos_out' applied and set. The other
versions did not set
'proxy.config.net.sock_packet_tos_out'  on requests to the origin.

#### 5.3.0 ####

# /opt/trafficserver530/bin/traffic_ctl -V
Apache Traffic Server - traffic_ctl - 5.3.0 - (build # 091611 on Sep
16 2015 at 11:26:18)

# /opt/trafficserver530/bin/traffic_ctl config match sock_packet_tos_out
proxy.config.net.sock_packet_tos_out: 184

#tcpdump output

11:37:22.460661 IP (tos 0xb8, ttl 64, id 40592, offset 0, flags [DF],
proto TCP (6), length 60)
    10.0.0.71.45743 > 74.125.227.196.80: Flags [S]



#### 5.3.2 ####

# /opt/trafficserver532/bin/traffic_ctl -V
Apache Traffic Server - traffic_ctl - 5.3.2 - (build # 091612 on Sep
16 2015 at 12:02:08)

# /opt/trafficserver532/bin/traffic_ctl config match sock_packet_tos_out
proxy.config.net.sock_packet_tos_out: 184


#tcpdump output

12:09:18.340644 IP (tos 0x0, ttl 64, id 439, offset 0, flags [DF],
proto TCP (6), length 60)
    10.0.0.71.45939 > 74.125.227.196.80: Flags [S]




#### 6.0.0 ####

# /opt/trafficserver60//bin/traffic_ctl -V
Apache Traffic Server - traffic_ctl - 6.0.0 - (build # 091613 on Sep
16 2015 at 13:29:33)

# /opt/trafficserver60/bin/traffic_ctl config match sock_packet_tos_out
proxy.config.net.sock_packet_tos_out: 184

#tcpdump output

13:40:31.176691 IP (tos 0x0, ttl 64, id 21260, offset 0, flags [DF],
proto TCP (6), length 60)
    10.0.0.71.47040 > 74.125.227.196.80: Flags [S]

On Fri, Sep 11, 2015 at 5:12 PM, Jason Strongman
<jasonstrongman2016@gmail.com> wrote:
> yeah, let me see what i can gather out of the debug logs.
>
> thanks for your response.
>
> On Fri, Sep 11, 2015 at 4:31 PM, Phil Sorber <sorber@apache.org> wrote:
>> On Fri, Sep 11, 2015 at 2:55 PM Jason Strongman
>> <jasonstrongman2016@gmail.com> wrote:
>>>
>>> In reverse proxy mode, it seems '
>>> proxy.config.net.sock_packet_tos_out' no longer applies to requests
>>> sent to the origin server.
>>> Given the same configuration in 5.3.0, this configuration option still
>>> works.
>>>
>>> I looked through the code and there are still references to this
>>> configuration option, so not sure what changed.
>>>
>>
>> https://github.com/apache/trafficserver/compare/5.3.0...5.3.1
>>
>> That's a link to all the changes between 5.3.0 and 5.3.1. Nothing stands out
>> to me as being able to cause the issue you describe. Is there any more
>> information you can provide?
>>
>>>
>>> Any hints?
>>>
>>> Thanks!

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