Add ICMP time exceeded support

[Karen-Schoener]

Allow pro-bing library to receive and process ICMP time exceeded messages.

Add new callback OnTimeExceeded to handle ICMP Type 11 (Time Exceeded) events.

This is useful when you want to catch ICMP time exceeded messages, in order to implement traceroute-like tools.

Fixes #194

[Karen-Schoener]

Tested on windows 11 (with firewall configured to allow time exceeded):

• tested ipv4 and ipv6 ping command. Verified successful icmp reply received.
• tested ipv4 and ipv6 ping command with low TTL specified. Verified ping command resported: Time to live exceeded

Commands run on windows 11:

.\ping.exe -c 3 -l 255 --privileged -Q 0 <ipv6-ip>
.\ping.exe -c 3 -l 1     --privileged -Q 0 <ipv6-ip>

Tested on fedora VM.

• tested ipv4 and ipv6 ping command. Verified successful icmp reply received.
• tested ipv4 and ipv6 ping command with low TTL specified. Verified ping command resported: Time to live exceeded

Command run on fedora:

sudo ./ping -c 5 -l 255 --privileged <ipv4-ip>
sudo ./ping -c 5 -l 7   --privileged <ipv4-ip>

[Hipska]

Looks fine, just a minor suggestion to keep things simple..

[Karen-Schoener]

@Hipska thanks very much for the review and approval!

Just wanted to check in on the next steps... Does this PR require approval from a second maintainer, or is the PR good to go?

Thanks very much, Karen

[Hipska]

Yes, since I'm not an official maintainer 😉

[Karen-Schoener]

Hi, tagging @SuperQ and @metalmatze to request a review of this PR from one of the maintainers of pro-bing.

This PR allows the pro-bing library to receive and process ICMP time exceeded messages.

When you get a chance, it would be great to hear feedback on the PR. Thanks very much!