Is there anyway to get Zmodem like DSZ or PD Zmodem to d/l a file using "RAW"?

I have a Door that can D/L files but won't work unless I connect to the BBS using "RAW"

Was wondering if it was possible.

Thanks

|02-=|10Cozmo|02=-

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Re: Zmodem and "RAW"
By: Cozmo to All on Mon Jul 03 2023 11:12 am

Is there anyway to get Zmodem like DSZ or PD Zmodem to d/l a file using "RAW"?

I have a Door that can D/L files but won't work unless I connect to the BBS using "RAW"

Was wondering if it was possible.

It may be possible. You would want something to launch before your door, to put the telnet session in to binary mode, and then turn it off when the door exits.

The protocol is here: https://www.rfc-editor.org/rfc/rfc856.txt

How to do it, I'm not sure, but a door author could write a door to do it, so when you launch your door, it goes: bbs-> binary mode door -> game -> undo binary mode door -> bbs



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Is there anyway to get Zmodem like DSZ or PD Zmodem to d/l a file using "RAW"?

I have a Door that can D/L files but won't work unless I connect to the using "RAW"

Was wondering if it was possible.

It may be possible. You would want something to launch before your door, to put the telnet session in to binary mode, and then turn it off when
the door exits.

The protocol is here: https://www.rfc-editor.org/rfc/rfc856.txt

How to do it, I'm not sure, but a door author could write a door to do
it, so when you launch your door, it goes: bbs-> binary mode door ->
game -> undo binary mode door -> bbs

I thought it might be a bit more simple to do. I thought I would at least ask if it was possible. Actually it woudn't a bad idea for someone to write a door for doing it, just for fun. Way beyond my skill level.

|02-=|10Cozmo|02=-

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Re: Zmodem and "RAW"
By: deon to Cozmo on Tue Jul 04 2023 10:19 am

Re: Zmodem and "RAW"
By: Cozmo to All on Mon Jul 03 2023 11:12 am

Is there anyway to get Zmodem like DSZ or PD Zmodem to d/l a file using "RAW"?

I have a Door that can D/L files but won't work unless I connect to the BBS using "RAW"

Was wondering if it was possible.

It may be possible. You would want something to launch before your door, to put the telnet session in to binary mode, and then turn it off when the door exits.

The protocol is here: https://www.rfc-editor.org/rfc/rfc856.txt

How to do it, I'm not sure, but a door author could write a door to do it, so when you launch your door, it goes: bbs-> binary mode door -> game -> undo binary mode door -> bbs

Telnet binary mode is not the same thing as Raw TCP. In Telnet binary mode you still have to escape the IAC (0xFF) characters, but not in Raw TCP mode.
--
digital man (rob)

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Re: Zmodem and "RAW"
By: Digital Man to deon on Mon Jul 03 2023 08:44 pm

How to do it, I'm not sure, but a door author could write a door to do it, so when you launch your door, it goes: bbs-> binary mode door -> game

undo binary mode door -> bbs

Telnet binary mode is not the same thing as Raw TCP. In Telnet binary mode you still have to escape the IAC (0xFF) characters, but not in Raw TCP mode.

Ahh, OK. So you need a shim of sorts? IE: Something to absorb 0xff and escape it (and doing the telnet binary mode thing)...

Thus, not an easy workaround..?


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On 04 Jul 2023, deon said the following...

Telnet binary mode is not the same thing as Raw TCP. In Telnet binary m you still have to escape the IAC (0xFF) characters, but not in Raw TCP

Ahh, OK. So you need a shim of sorts? IE: Something to absorb 0xff and escape it (and doing the telnet binary mode thing)...

Thus, not an easy workaround..?

might be easy enough to have a second fossil tsr that just passed almost everything unchanged to the first one (you can fetch the address of the
original one and then replace it) .. except for escaping the telnet stuff. then include it in the batch file for the door to load and then unload it.

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Re: Zmodem and "RAW"
By: deon to Digital Man on Tue Jul 04 2023 03:42 pm

Re: Zmodem and "RAW"
By: Digital Man to deon on Mon Jul 03 2023 08:44 pm

How to do it, I'm not sure, but a door author could write a door to do it, so when you launch your door, it goes: bbs-> binary mode door -> game

undo binary mode door -> bbs

Telnet binary mode is not the same thing as Raw TCP. In Telnet binary mode you still have to escape the IAC (0xFF) characters, but not in Raw TCP mode.

Ahh, OK. So you need a shim of sorts? IE: Something to absorb 0xff and escape it (and doing the telnet binary mode thing)...

Thus, not an easy workaround..?

Simply absorbing 0xff wouldn't be enough either as there are a variable number of bytes that follow the 0xff that constitute the Telnet command(s).
--
digital man (rob)

Breaking Bad quote #9:
"Cheesedick" - I know that one [word]. How about that? - Hank Schrader
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Re: Zmodem and "RAW"
By: Digital Man to deon on Thu Jul 06 2023 11:59 am

Ahh, OK. So you need a shim of sorts? IE: Something to absorb 0xff and escape it (and doing the telnet binary mode thing)...

Simply absorbing 0xff wouldn't be enough either as there are a variable number of bytes that follow the 0xff that constitute the Telnet command(s).

Right, which is why the shim would need to escape it before sending it on. In a binary file transfer, its not an IAC command.



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On 07 Jul 2023, deon said the following...

Re: Zmodem and "RAW"
By: Digital Man to deon on Thu Jul 06 2023 11:59 am

Ahh, OK. So you need a shim of sorts? IE: Something to absorb 0xff a escape it (and doing the telnet binary mode thing)...

Simply absorbing 0xff wouldn't be enough either as there are a variable number of bytes that follow the 0xff that constitute the Telnet command

Right, which is why the shim would need to escape it before sending it
on. In a binary file transfer, its not an IAC command.

a 'real' telnetd will continue interpreting telnet negotiations even during a zmodem transfer. the telnetd doesn't even know zmodem is running.

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Re: Re: Zmodem and "RAW"
By: fusion to deon on Thu Jul 06 2023 09:03 pm

a 'real' telnetd will continue interpreting telnet negotiations even during a zmodem transfer. the telnetd doesn't even know zmodem is running.

Right, hence why you need something in between the client and the telnetd, if the client doesnt know anything about the telnet protocol.


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