MYSQL_OPT_READ_TIMEOUT -- Linux 2006-06-01 - By Ramya Krishnan
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Hi,
I am using mysql-5 (See http://sql-5.ora-code.com).0.21 version. This issue was discussed in the bugs
list 4.x.x version and I believe the same has been closed(only for windows).
Problem:
1. Connection is established to the server
2. sever goes down.
3. The read at the client hangs.
The timeout has been implemented for windows. Not for Linux?? If this is
not required in Linux how do i handle the same in linux. Would I have to
wait close to 15 min for the function to return? Can this be controlled
through my.cnf or mysql_option. Why cant setsockopt to control the
timeout be implemented on Linux too.
8938 12:10:11.040375 read(3, 0x8de33b0, 16384) = -1 EHOSTUNREACH (No
route to host)
8938 12:25:36.521901 shutdown(3, 2 /* send and receive */) = -1
ENOTCONN (Transport endpoint is not connected)
void vio_timeout(Vio *vio __attribute__((unused)),
uint which __attribute__((unused)),
uint timeout __attribute__((unused)))
{
#ifdef __WIN__
ulong wait_timeout= (ulong) timeout * 1000;
(void) setsockopt(vio->sd, SOL_SOCKET,
which ? SO_SNDTIMEO : SO_RCVTIMEO, (char*) &wait_timeout,
sizeof(wait_timeout));
#endif /* __WIN__ */
}
--
Thanks and Regards
Ramya Krishnan
Any intelligent fool can make things bigger, more complex, and more violent. It
takes a touch of genius and a lot of courage to move in the opposite direction
-- Albert Einstein
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