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 Entire forum ➜ MUSHclient ➜ Bug reports ➜ Wrong role in telnet CHARSET negotiation

Wrong role in telnet CHARSET negotiation

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Posted by Myonara   (3 posts)  Bio
Date Sun 05 May 2019 04:55 PM (UTC)
Message
In https://github.com/nickgammon/mushclient/issues/47 the following issue is described:

MUSHClient sends IAC WILL CHARSET and expects the MUD to start the IAC SB CHARSET subnegotiation. But according to RFC 2066 (https://tools.ietf.org/html/rfc2066) about the IAC SB CHARSET REQUEST message:

This message initiates a new CHARSET subnegotiation. It can only be sent by a side that has received a DO CHARSET message and sent a WILL CHARSET message (in either order).

So either MUSHClient should send a IAC DO CHARSET and wait for the server to send the SB or send the IAC WILL CHARSET and start itself the SB.
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Posted by Nick Gammon   Australia  (23,165 posts)  Bio   Forum Administrator
Date Reply #1 on Sun 05 May 2019 09:00 PM (UTC)
Message
I have responded to the issue on GitHub.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (23,165 posts)  Bio   Forum Administrator
Date Reply #2 on Mon 06 May 2019 09:10 PM (UTC)
Message
That seems to be a fairly minor fix, as the actual negotiation part is unchanged. The client now supports receiving IAC WILL CHARSET and responding IAC DO CHARSET, as well as the original behaviour of receiving IAC DO CHARSET and responding IAC WILL CHARSET in order to support servers that are used to the old way.

I believe I have fixed that in version 5.07 (pre-release) which you can download following the instructions here:

http://www.gammon.com.au/forum/?id=13903

Fix details:

https://github.com/nickgammon/mushclient/commit/662585f

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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