Messages in this thread | | | Date | Fri, 9 Jan 1998 08:20:15 -0800 (PST) | From | longd <> | Subject | sockets in SOCK_PACKET mode? |
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Please forgive if this is off topic, it seemed to me the folks on this list would know the most about this.
I recently started playing with sockets into the interface packet layer, opened via a call something like this:
s=socket(AF_INET,SOCK_PACKET,0);
I learned about this type of socket through a small sniffer (linsniff.c). linsniff calls socket() like this:
s=socket(AF_INET,SOCK_PACKET,htons(0x800));
My question is, what is this magic number 0x800 for? I can't find it as a #define in any of the include files in the standard include tree. Is it necessary? In response to the inevitable question, yes, I am writing my own sniffer, simply because I want to play with packet-level sockets and I couldn't think of a better thing to do with them.
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