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[MINOR] set the log socket receive window to zero bytes

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The syslog UDP socket may receive data, which is not cool because those
data accumulate in the system buffers up to the receive socket buffer size.
To prevent this, we set the receive window to zero and try to shutdown(SHUT_RD)
the socket.
This commit is contained in:
Willy Tarreau 2007-09-17 10:56:13 +02:00
parent 7c1ffc1e8f
commit 530b9dde00
1 changed files with 3 additions and 0 deletions
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3
src/log.c
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@ -163,6 +163,9 @@ void send_log(struct proxy *p, int level, const char *message, ...)
if (logfd < 0) {
if ((logfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
return;
/* we don't want to receive anything on this socket */
setsockopt(logfd, SOL_SOCKET, SO_RCVBUF, &zero, sizeof(zero));
shutdown(logfd, SHUT_RD); /* does nothing under Linux, maybe needed for others */
}
if (level < 0 || progname == NULL || message == NULL)