gnutls-cli does not show response to EHLO, telnet does

[Daniel Kahn Gillmor]

On 05/29/2012 02:22 PM, Andreas Metzler wrote:
> Hello,
> 
> it seems to be impossible to connect to smtp.jaist.ac.jp 587 with
> gnutls-cli:
> 
> -------------------
> ametzler at argenau:~$ gnutls-cli -s --priority=NORMAL:%COMPAT:-VERS-TLS1.1:-VERS-TLS1.2 smtp.jaist.ac.jp -p 587
> Processed 152 CA certificate(s).
> Resolving 'smtp.jaist.ac.jp'...
> Connecting to '150.65.19.12:587'...
> 
> - Simple Client Mode:
> 
> 220 jaist.ac.jp ESMTP mail service ready
> EHLO openssl.client.net
> [nothing happens]
> -------------------
> 
> telnet succeeds. Any idea why?

It looks to me like smtp.jaist.ac.jp expects proper CRLF line endings.
Compare:

  socat STDIO TCP4:smtp.jaist.ac.jp:587

  socat STDIO TCP4:smtp.jaist.ac.jp:587,crnl

I get a response from the latter, but not from the former.

	--dkg

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