Re: Connection issue - Mailing list pgsql-general

Hi again,


> On 6. Feb 2019, at 17:19, Adrian Klaver <adrian.klaver@aklaver.com> wrote:
>
> On 2/6/19 7:18 AM, Maximilian Tyrtania wrote:
>> Well, the problem being a Parallels issue is just a wild theory of mine, it could well be something else. Honstly I
don'trecall updating anything in that area. As Mr. Gomez suggested I tried to 
>
> So from a previous post:
>
> > Have you recently updated any of the involved software?
>
> Well, sure, but after I saw I couldn't connect ...
>
> So what happened in the interval between the time you could connect and the time you could not?

I did update parts of my app (including the plugin which in turn encapsulates libpq). I did not update my parallels
installation,as far as I remember. Sorry if I was unclear about that. 

>> ping - worked
>> telnet - did not work (infact I couldn't telnet anywhere)
>
> In my experience telnet is generally disabled these days.

I had to enable it on my Windows box, if that's what you mean. The "telnet" command works by itself, but I didnt
receiveanything when trying to telnet to some other machine. 

>> tracert - worked
>> from my windows 10 box (didn't bother to check on my Mac as I have noc issues there). Still curious as to why the
serverwould say "Connection reset by peer". 
>
> Well if you are running Windows --> Parallels --> OS X(Mac) --> Serve, you are effectively testing the Mac also.
>
> As to 'Connection reset by peer':
>
> A grep of the Postgres source find this:
>
> interfaces/libpq/win32.c
>
> * Contains table and functions for looking up win32 socket error
> * descriptions. But will/may contain other win32 helper functions
> * for libpq.
>
>
> WSAECONNRESET, "Connection reset by peer"
>
> Looking up WSAECONNRESET finds this:
>
> https://docs.microsoft.com/en-us/windows/desktop/WinSock/windows-sockets-error-codes-2
>
>
> WSAECONNRESET
> 10054
>
> Connection reset by peer.
>    An existing connection was forcibly closed by the remote host. This normally results if the peer application on
theremote host is suddenly stopped, the host is rebooted, the host or remote network interface is disabled, or the
remotehost uses a hard close (see setsockopt for more information on the SO_LINGER option on the remote socket). This
errormay also result if a connection was broken due to keep-alive activity detecting a failure while one or more
operationsare in progress. Operations that were in progress fail with WSAENETRESET. Subsequent operations fail with
WSAECONNRESET.

Ah, thanks for digging that up. Hmm, sounds as if something is definetly wrong on my windows box.

I'll try contacting the Parallels support guys.

Thanks again,

Max