Here's some C source code which should point to the right functions: https://www.geeksforgeeks.org/ping-in-c/
I think you can just use `#f` for the library -- all the functions should be from libc. Sam On Thu, Apr 2, 2020 at 1:00 PM David Storrs <david.sto...@gmail.com> wrote: > > On Thu, Apr 2, 2020 at 12:37 PM George Neuner <gneun...@comcast.net> wrote: > > > > > > 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. > > Doesn't surprise me. Fortunately, I don't need it for Windows, at > least right now. > > > 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. > > Cool thanks. Do you happen to know what library I should be FFI'ing > into, ideally for macOS? Trying to find information on using ICMP > programmatically tends to result in things like: return > subprocess("ping hostname") > > > > > George > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to racket-users+unsubscr...@googlegroups.com. > > To view this discussion on the web visit > > https://groups.google.com/d/msgid/racket-users/bc77f87f-378c-6d5c-3875-3270cb25134b%40comcast.net. > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/CAE8gKodjbeVWqdJRKKYEvYspg%3DDtDTk4GbWQeqHCk4kQ%2BPahZA%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/CAK%3DHD%2BYVnzqyyJCWRphJK%3DkCWHtDJ2kMpr4_0PZmro_zbSb%2BNQ%40mail.gmail.com.
