Need to setsockopt at the SOL_SOCKET and IPPROTO_IP levels

Asked Apr 26 '17 at 23:28

Active Apr 26 '17 at 23:28

Viewed 279 times

So basically I currently have my socket set up with

setsockopt(nativeSock, SOL_SOCKET, SO_TIMESTAMPING,
            &so_timestamping_flags, sizeof(so_timestamping_flags)

because I need access to the msghdr for timestamping reasons. However, I also need access to the iphdr to pull ttl and a few other values from incoming datagrams.

Is it possible to setsockopt at more than one level per socket?

asked Apr 26 '17 at 23:28

notAChance

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Yes. (Why not just try it and see?) – user253751 Apr 26 '17 at 23:43
Why thank you, I incorrectly assumed it would overwrite the previous settings. – notAChance Apr 27 '17 at 00:10
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Setting an *individual* option will overwrite the existing value of only that one option. Setting an option will not overwrite any other existing options. – Remy Lebeau Apr 27 '17 at 01:03

Need to setsockopt at the SOL_SOCKET and IPPROTO_IP levels

0 Answers0