I'm trying to write a program that creates a listening socket that will accept ICMP packets and then read them in. I created a socket using socket() and then the next step is to bind it. But what port would I bind to since ICMP doesn't have a port?
I'm trying to write a program that creates a listening socket that will accept ICMP packets and then read them in. I created a socket using socket() and then the next step is to bind it. But what port would I bind to since ICMP doesn't have a port?
Although I have not done it before I am pretty sure you need to use a "raw socket" for this. I am sure you cannot use a normal tcp or udp socket.
Take a look at these, they both cover ICMP explicitly:
Winsock Programmer's FAQ: Ping: Raw Sockets Method
http://courses.cs.vt.edu/~cs4254/fal...ides/raw_6.pdf
You can use raw sockets on *nix too, I don't know your OS.
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
Thanks. I'll look into that. I guess I should have said I'm using FreeBSD.
Well yer in luck. Word on the street is MS doesn't like raw sockets and doesn't support them wellOriginally Posted by homer_3
But Berkeley sockets were made for this, I think.
You may also want to investigate the pcap library, which is used with packet sniffers; you will definately be able to catch ICMP packets in there (I'm not sure how it works but I would guess raw sockets).
Last edited by MK27; 01-21-2010 at 10:11 AM.
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
