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Automatically terminate replication connections that are idle for more

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than replication_timeout (a new GUC) milliseconds. The TCP timeout is often
too long, you want the master to notice a dead connection much sooner.
People complained about that in 9.0 too, but with synchronous replication
it's even more important to notice dead connections promptly.

Fujii Masao and Heikki Linnakangas
This commit is contained in:
Heikki Linnakangas
2011-03-30 10:10:32 +03:00
parent bc03c5937d
commit 754baa21f7
11 changed files with 368 additions and 129 deletions
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13
src/backend/port/win32/socket.c
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@ -14,7 +14,8 @@
#include "postgres.h"
/*
* Indicate if pgwin32_recv() should operate in non-blocking mode.
* Indicate if pgwin32_recv() and pgwin32_send() should operate
* in non-blocking mode.
*
* Since the socket emulation layer always sets the actual socket to
* non-blocking mode in order to be able to deliver signals, we must
@ -399,6 +400,16 @@ pgwin32_send(SOCKET s, char *buf, int len, int flags)
return -1;
}
if (pgwin32_noblock)
{
/*
* No data sent, and we are in "emulated non-blocking mode", so
* return indicating that we'd block if we were to continue.
*/
errno = EWOULDBLOCK;
return -1;
}
/* No error, zero bytes (win2000+) or error+WSAEWOULDBLOCK (<=nt4) */
if (pgwin32_waitforsinglesocket(s, FD_WRITE | FD_CLOSE, INFINITE) == 0)