[squid-users] Squid Source Code: What files/functions receive/send packets from/to hardware

[Amos Jeffries]

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On 6/01/2015 2:27 a.m., Priya Agarwal wrote:
> Hi.
> 
> I am Priya. I want to modify the squid code only in places where it
> is actually communicating with the hardware to send or receive
> packets. I do not intent to change its functionality or how it
> works.
> 

Squid does not communicate with the hardware. Squid communicates with
the OS networking stack. The OS does the packeting/unpacketing.


> I am facing some difficulty in understanding the full code. If I
> could get some hints on for e.g. which functions/files are involved
> receiving and storing the packet data, or which structures hold the
> received/sent data etc., my work would become more streamlined.

:-) nobody knows the full code anymore. Not even me, the current
Project maintainer. Though if you would explain what you are trying to
achieve I can point you in the right direction. Or maybe somebody in
squid-dev mailing list (where the dev team hang out and discuss code).

> 
> My purpose is to add some extra code wherever the application wants
> to send or receive the packets.

What exactly are you wanting to make Squid do?
 "some extra code" is kind of weak on detail.

Cheers
Amos

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