Date: Sat, 15 Aug 1998 03:15:49 +0200
From: Phear Me <[email protected]>
To: [email protected]Subject: MySQL DoS ?
This appeared at the MySQL list:
Date: Fri, 14 Aug 1998 18:50:02 +0200
From: Jochen Wiedmann <[email protected]>
Subject: mysql: Connecting/Disconnecting 1100 times freezes server
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for [email protected]; Fri, 14 Aug 1998 18:42:55 +0200
Date: Fri, 14 Aug 1998 18:42:55 +0200
Full-Name: root
Message-Id: <[email protected]>
From: joe
To: [email protected]Subject: connecting/disconnecting 1100 times freezes server
>Description:
A simple test script that connects/disconnects in an endless
loop makes the MySQL server freeze after approximately 1100
iterations.
Is this a bug or a security related feature? If the latter,
can I turn it off somehow, as it prevents me from
investigating a memory leak in the DBD::mysql's connect
method.
>How-To-Repeat:
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <mysql/mysql.h>
int main(int argc, char* argv[]) {
MYSQL sock;
int i = 0;
while (1) {
if (++i % 100 == 0) {
printf("%d\n", i);
}
mysql_init(&sock);
if (!mysql_real_connect(&sock, NULL, NULL, NULL, NULL,
0, NULL, 0)) {
fprintf(stderr, "Cannot connect: %s\n",
mysql_error(&sock));
exit(10);
}
mysql_close(&sock);
}
}
>Fix:
Not known
