What programs would you recommend for reading the parameters that are sent to the server?

Question

linux

Good morning.
Please tell me the programs for reading the parameters (which come and go by me). Which will show, as it were, the logs of all the processes that send and receive (I don’t know how to put it more accurately, probably the packets, the headers).
I want to see what I send and I receive from where and where.
I am using Ubuntu.

Answer 1

If you need to debug the application not only at the level of http packages, then read the following guide - rusrails.ru/debugging-rails-applications

Answer 2

tcpdump

Answer 3

Любой сниффер)