Client connections and telnetd (-K flag?)

[Magnus Carlsson]

A that explains it! Thank you very much for your answer!

I will upgrade the busybox and try it out.

/Magnus

2010/11/26 Denys Vlasenko <vda.linux at googlemail.com>:
> On Thursday 25 November 2010 11:32, Magnus Carlsson wrote:
>> Thanks for your answer.
>>
>> I don't think you read the entire post though :-)
>>
>> > What version of busybox?
>> 1.13.3
>>
>> > I think this is already fixed. Try newer version.
>> I understand your point here, although as I stated in the original
>> post, I checked the previous mail threads and bug reports and came to
>> the conclusion that the fix for this issue would be the -K flag to
>> telnetd and that is already present in 1.13.3.
>
> No, -K is not the fix for that. The fix was in this commit:
>
> commit a4bcbd0e0416bb4965488ec1f16039aa302f8b91
> Author: Denys Vlasenko <vda.linux at googlemail.com>
> Date:   Tue Jun 9 23:01:24 2009 +0200
>
>    telnetd: properly close fds in child
>
>
> and you need to use at least 1.15.x to have this fix.
> 1.14.4 does not have the fix, neither 1.13.3.
>
>
>> I am not against upgrading although I would like some input if the -K
>> flag is considered to be working in 1.13.3 or if I have done something
>> else wrong.
>
> If telnetd is run with -K, you are getting "Connection closed by foreign host"
> immediately in this example telnel session:
>
> $ sleep 20 &
> [1] 2997
> $ exit
> Connection closed by foreign host
>
> whereas without -K, you will wait for backgrounded sleep to exit.
>
> I just re-tested it. It works.
>
> --
> vda
>