cygwin not setting errno on "Connection refused" errors

cygwin not setting errno on "Connection refused" errors

[Luke White]

I just updated cygwin today, and I've noticed that errno is not being
set when there's a connection refused error.  This appears to be true
for INET and UNIX domain sockets.

For example:

$ ssh -p 12345 localhost
ssh: connect to host localhost port 12345: No error


Notice how it reports "No error" instead of "Connection refused".

I'm using version 1.7.30 of cygwin64.  I don't remember what version I
was at before I upgraded.

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Re: cygwin not setting errno on "Connection refused" errors

[Corinna Vinschen]

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On May 30 19:01, Luke White wrote:
> I just updated cygwin today, and I've noticed that errno is not being
> set when there's a connection refused error.  This appears to be true
> for INET and UNIX domain sockets.
> 
> For example:
> 
> $ ssh -p 12345 localhost
> ssh: connect to host localhost port 12345: No error
> 
> 
> Notice how it reports "No error" instead of "Connection refused".

https://cygwin.com/ml/cygwin/2014-06/msg00172.html


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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AW: cygwin not setting errno on "Connection refused" errors

[Christoph H. Hochstaetter]

On June 16 15:12 Corinna Vinschen wrote:
>On May 30 19:01, Luke White wrote:
>> I just updated cygwin today, and I've noticed that errno is not being
>> set when there's a connection refused error.  This appears to be true
>> for INET and UNIX domain sockets.
>>
>> For example:
>>
>> $ ssh -p 12345 localhost
>> ssh: connect to host localhost port 12345: No error
>>
>>
>> Notice how it reports "No error" instead of "Connection refused".
>
>https://cygwin.com/ml/cygwin/2014-06/msg00172.html
>
>
>Corinna

Works as expected again with today's snapshot (couldn't test dup'd sockets
quickly, sorry):

[user@host ~] $ ssh -p 4711 localhost
ssh: connect to host localhost port 4711: Connection refused
[user@host ~] $ ssh www.google.com
ssh: connect to host www.google.com port 22: Connection timed out

Thx

-Christoph

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Re: cygwin not setting errno on "Connection refused" errors

[Corinna Vinschen]

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On Jun 16 19:43, Christoph H. Hochstaetter wrote:
> On June 16 15:12 Corinna Vinschen wrote:
> >On May 30 19:01, Luke White wrote:
> >> I just updated cygwin today, and I've noticed that errno is not being
> >> set when there's a connection refused error.  This appears to be true
> >> for INET and UNIX domain sockets.
> >>
> >> For example:
> >>
> >> $ ssh -p 12345 localhost
> >> ssh: connect to host localhost port 12345: No error
> >>
> >>
> >> Notice how it reports "No error" instead of "Connection refused".
> >
> >https://cygwin.com/ml/cygwin/2014-06/msg00172.html
> >
> >
> >Corinna
> 
> Works as expected again with today's snapshot (couldn't test dup'd sockets
> quickly, sorry):
> 
> [user@host ~] $ ssh -p 4711 localhost
> ssh: connect to host localhost port 4711: Connection refused
> [user@host ~] $ ssh www.google.com
> ssh: connect to host www.google.com port 22: Connection timed out
> 
> Thx

Thank you for testing,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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cygwin not setting errno on "Connection refused" errors

[Christoph H. Hochstaetter]

>I just updated cygwin today, and I've noticed that errno is not being
>set when there's a connection refused error.  This appears to be true
>for INET and UNIX domain sockets.
>
>For example:
>
>$ ssh -p 12345 localhost
>ssh: connect to host localhost port 12345: No error
>
>
>Notice how it reports "No error" instead of "Connection refused".
>
>I'm using version 1.7.30 of cygwin64.  I don't remember what version I
>was at before I upgraded.

I can confirm that this happens to every application using connect().
errno always returns 0 if connect() returns < 0. strerror() then correctly
says "No error". Worked in 1.7.29. Tested with 64 bit only.

-Christoph

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