[Info-vax] yet another sys$qiow question

[JF Mezei]

On 15-08-11 18:38, kc at kayceesoftware.com wrote:

> The terminal port (TNA1) is set pasthru, the VMS IO Ref Manual says IO$M_NOFORMAT and TT2$M_PASTHRU are basically the same.  

I am not sure if you really use the full TT driver when using telenet
and if all functionality is supported. Someone else could confirm.

The problem here is that the Telnet protocol itself is not transparent
and a few constructs that allow session management (for instance, an
escape character to get to command mode). There are also exchanges early
on to define session characteristics.

Abnd I believe that line termination in Telnet is "standardized" on the
link. The client sees its local line termination and *may* send a
standard line termination instead (not sure of this).

> So, is it the TT driver, or tcp, or something else converting the LF to CRLF?
> And....what flag(s) do I need to set to have full passthru?


There is a way when you setup the TN device to make it behave as a dumb
TCP link.

If TT driver is involved it is only at the generic level and there would
be the underlying telenet driver below.