Question on peer-socket-tos

[etlunatic]

Hi there,

I am new to transmission and I have a question about the use of the peer-socket-tos option.

In my settings.json, I have:

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"peer-socket-tos": 32

I am using FreeBSD with PF and ALTQ. In my pf.conf, I have something like:

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pass out quick on $ext_if inet proto { tcp udp } from $ext_if to any tos 32 flags S/SA modulate state queue bittorrent 

but I don't see any traffic passing thru.

Any idea where I am wrong?

Thx

[etlunatic]

I changed my pf.conf to this:

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pass out quick on $ext_if inet proto { tcp udp } from $ext_if to any tos 32 no state queue q_bittorrent 
pass out quick on $ext_if inet proto tcp from $ext_if to any tos lowdelay queue q_tcp_ack 

Still no traffic.

[etlunatic]

Here is what I get with tcpdump for a packet sent by the transmission daemon:

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Some_Time_Stamp IP (tos 0x0, ttl 64, id 29049, offset 0, flags [DF], proto TCP (6), length 60) My_IP.51480 > Some_IP.12071: [|tcp]

It doesn't look the packet tos is anything close to 0x20

[etlunatic]

For the record, as I never got the TOS option to work (I suspect the NAT rule in pf reset the TOS although it is undocumented), I am moving to plan B which is to run the daemon under a dedicated user (e.g. transmission) and set out the parameter "user" in the packet filter rule as shown below:

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pass out quick on $ext_if inet proto { tcp udp } from $ext_if to any user transmission flags S/SA modulate state queue bittorrent 

This is of course for the daemon running on the gateway box.

Now, if you are planning to run the daemon on a different box, my best advice would be to set up a proxy server bound to an alias of the internal NIC on the gateway server and connect the daemon to this proxy server. You can then use pf and altq to filter and queue traffic from this alias.

Adding my two cents...

[Master One]

I also just wondered, how this setting can be handled. If anybody knows what to to with peer-socket-tos, please share your knowledge.