Re: libpq sockets on win32

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: jeff(at)jeffjohnson(dot)net
Cc: pgsql-interfaces(at)postgresql(dot)org, pgsql-docs(at)postgresql(dot)org
Subject: Re: libpq sockets on win32
Date: 2001-06-10 02:55:46
Message-ID: 200106100255.f5A2tkc21924@candle.pha.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-docs pgsql-interfaces


I have added this thread to TODO.detail/libpq.

> I found that sending more than 16k of data in a SQL statement caused a
> problem. I was using PyGreSQL but narrowed the error down to
> "\postgresql-7.1.2\src\interfaces\libpq\fe-misc.c" pqReadData() and
> pqFlush(). After some poking around, it looked like recv was setting
> errno to ENOENT for some reason. I figured out why today. Win32
> sockets don't set errno at all. ENOENT was just left in errno from
> some earlier call.
>
> This article describes the problem and work around.
> http://msdn.microsoft.com/library/psdk/winsock/ovrvw3_26ia.htm
>
> I haven't done much C coding in a few years and don't want to break
> other code by blindly doing:
>
> #define errno WSAGetLastError
>
> Does anyone that knows this code want to take a crack at it?
>
> Thanks,
> Jeff
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 1: subscribe and unsubscribe commands go to majordomo(at)postgresql(dot)org
>

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026

In response to

Browse pgsql-docs by date

  From Date Subject
Next Message Bruce Momjian 2001-06-10 03:47:13 Re: Update needed for documentation
Previous Message Vince Vielhaber 2001-06-08 15:01:23 Re: Developer's Bios

Browse pgsql-interfaces by date

  From Date Subject
Next Message Alex Pilosov 2001-06-10 19:59:45 [PATCH] notify support for DBD::Pg
Previous Message Bruce Momjian 2001-06-10 02:48:38 Re: [DOCS] Re: libpq sockets on win32