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<div dir="ltr">Hello, <br><br>I am trying to use the rate limit module using Kamailio 1.5.2. I feel that I got it but I would<br> like some pointers and recommendations.<br><br>These are my settings: (this is a lab of course), I used 1 on the timer_interval because I am<br> generating the calls manually and wanted to see it in action quickly: <br><br><br># ---- ratelimit -------<br>modparam("ratelimit", "timer_interval", 1)<br>modparam("ratelimit", "reply_code", 506)<br>modparam("ratelimit", "reply_reason", "Rejecting due to high load")<br>modparam("ratelimit", "queue", "0:INVITE")<br>modparam("ratelimit", "pipe", "0:TAILDROP:1")<br><br><br><div>
<div> then in the route section:<br><br><br> if (method=="INVITE") {<br> xlog("L_INFO","mylog: RL found INVITE.\n");<br> if (!rl_check()) {<br> xlog("L_INFO","mylog: RL dropped message.\n");<br> rl_drop();<br> exit;<br> };<br> xlog("L_INFO","mylog: RL found INVITE but did not drop it.\n");<br> };<br><br><br>The TAILDROP algorithm seems to work better than the RED, based on what I expected of course (with 1 sec timer interval and 1 calls/sec on the pipe). <br>Making manual calls one right after the other almost always triggered the protecting when there was another call on the same second.<br><br><br>But these lines (1.6.3. <code class="varname">pipe</code>) on the doc got me kind of confused:<br><br>" When specifying a limit, the unit depends on the algorithm used and <br>doesn't
need to be specified also (eg, for TAILDROP or RED, limit means packets/sec,
whereas with the FEEDBACK <br>algorithm, it means [CPU] load factor).<br><br>For these 2 lines below, does this mean that the interval =10 will be overridden by the 100 calls/sec on the TAILDROP algorithm?<br><br>modparam("ratelimit", "timer_interval", 10)<br>modparam("ratelimit", "pipe", "0:TAILDROP:100")<br><br>I made a quick test and with timer_interval = 10 and TAILDROP:1, it looks like the protection kicks in almost every 10 secs: (Dec 2 19:44:07 and Dec 2 19:43:57),<br><br> tail -f proxy.log | grep RL<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:53 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:54 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:54 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:55 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:55 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:56 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:56 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:56 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:56 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:56 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:56 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:57 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:57 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:57 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:57 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL dropped message.<br>Dec 2 19:43:58 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:58 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:59 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:43:59 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:43:59 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:43:59 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:01 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:44:01 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:02 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:44:02 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:02 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:44:02 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:04 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:44:04 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:06 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:44:06 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:06 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:44:06 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:07 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE.<br>Dec 2 19:44:07 AW-ATL-PROXY-01 ./kamailio[17449]: mylog: RL found INVITE but did not drop it.<br>Dec 2 19:44:07 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:44:07 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL dropped message.<br>Dec 2 19:44:10 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE.<br>Dec 2 19:44:10 AW-ATL-PROXY-01 ./kamailio[17450]: mylog: RL found INVITE but did not drop it.<br><br><br></div></div></div> </div></body>
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