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ktls-bpf_redirect-example's Introduction

ktls-bpf_redirect-example

How to test

In the first terminal, launch the program

sudo go run .

In the second terminal, launch a listening nc

nc -lp 8080

In the last terminal, launch an openssl client

openssl s_client -connect 127.0.0.1:8081

You should see decrypted data on the nc terminal.

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ktls-bpf_redirect-example's Issues

seems not work in my environment

hi, I'm running this code in my ubuntu system and something is wrong.

# uname -r
5.15.0-84-generic
image

as shown above, when sending data from openssl client, the server(nc) will receive some binary bytes with the right raw data.

I added bpf_printk both in _prog_parser and _prog_verdict and found that _prog_parser only triggered when nc send data back to openssl, sending data from openssl side will not trigger _prog_parser. Is it expected or is there something wrong?

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