On 4/2/2020 11:13 AM, David Storrs wrote:
The Reference lists TCP and UDP but nothing else. I'd like to be able
to implement ICMP, since there doesn't seem to be such a thing at the
moment, and I'm trying to figure out how to do that.
In an ideal world I'd have something like ip-in and ip-out ports as
the complement to tcp-in and tcp-out ports and then I could simply
hand the ip-out port some bytes that constitute an ICMP or etc packet
and away it goes. Failing that, if I can get a raw socket then I
could do the IP stuff on top of it; with that in hand it would be
(more) straightforward to implement other protocols.
Is there a way to do this in Racket?
Windows historically placed a lot of limitations on the use of raw sockets.
https://docs.microsoft.com/en-us/windows/win32/winsock/tcp-ip-raw-sockets-2
There doesn't seem to be any updated information on Win10, so you might
conclude that it has the same limitations as Win7.
Re: ICMP, I think it should be possible to implement at least some of
the functions (not sure about all of them) ... but it will have to be
done via FFI.
George
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