Add SNI field for HTTPS

[VISION-183]

Hi there .

Hope you doing well ...

Is it possible to add SNI fields for HTTPS packets ? I'm building a simple netflow collector and its dashboard and I need to know SNI beside destination IP of each packet ...

[mozillazg]

@VISION-183 Yes,

• you can extract the SNI via gopacket: extract the TLS Server Name Indication (SNI) gopacket/gopacket#84
• or via bpf: https://github.com/inspektor-gadget/inspektor-gadget/blob/1101d943e01b25241975e82bc48eed69fe909b88/gadgets/trace_sni/program.bpf.c#L73

[VISION-183]

Unfortunately I'm not familiar with bpf or your source code. don't know how to do it. I was wondering if you can add it to your program via a cmd switch ... otherwise I should giveup or deep dive in bpf and source codes ...

Thanks anyway for your response ...

[mozillazg]

I'll give it a try.