Re: Specification of Berkeley networking utilities

Roy Smith (phri!
23 Oct 88 14:36:17 GMT () writes:
> The type of question that I would expect to be able to answer given a
> specification is the use made out-of-band data in rlogin for example.

        I've been working on-and-off for a year or so trying to get my own
version of rlogin working under SunOS-3.2 and lately 3.5.2. The stumbling
block has been the out-of-band data part. Basicly, rlogin uses oob to
negotiate options such as "please inform me of window-size changes", but as
to the details of exactly how it works, I've had to just read the source
code (not a useful answer if you don't have source). I sort of think I
might have most of it figured out, but not well enough that I would risk
inflicting my misconceptions on other people.

        Perhaps I've made my job harder than it has to be by trying to get
my rlogin to run as a suntools application. I use the notifier to tell me
when oob data is available, but I don't think it works properly.
Sometimes, my oob routine gets called by the notifier (which supposedly
means there is oob data waiting to be read) but when I try to read it,
nothing is there (i.e. select says there is nothing pending, recv returns
0, ioctl says I'm not at the mark, etc).

Roy Smith, System Administrator
Public Health Research Institute
{allegra,philabs,cmcl2,rutgers}!phri!roy -or- phri!
"The connector is the network"

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