mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2024-12-27 08:39:28 +08:00
Code Issues Packages Projects Releases Wiki Activity

Make libpq on windows not try to send chunks larger than 64Kb.

Browse Source 
Per Microsoft knowledge base article Q201213, early versions of
Windows fail when we do this. Later versions of Windows appear
to have a higher limit than 64Kb, but do still fail on large
sends, so we unconditionally limit it for all versions.

Patch from Tom Lane.
This commit is contained in:
Magnus Hagander 2008-08-20 11:53:49 +00:00
parent 8ca6a92ae0
commit 7ddd839647
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/interfaces/libpq/fe-misc.c
View File

@ -23,7 +23,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-misc.c,v 1.130 2006/10/04 00:30:13 momjian Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-misc.c,v 1.130.2.1 2008/08/20 11:53:49 mha Exp $
*
*-------------------------------------------------------------------------
*/
@ -752,7 +752,16 @@ pqSendSome(PGconn *conn, int len)
int sent;
char sebuf[256];
#ifndef WIN32
sent = pqsecure_write(conn, ptr, len);
#else
/*
* Windows can fail on large sends, per KB article Q201213. The failure-point
* appears to be different in different versions of Windows, but 64k should
* always be safe.
*/
sent = pqsecure_write(conn, ptr, Min(len, 65536));
#endif
if (sent < 0)
{