Traffic Shaping¶
Module: core
Description¶
Starting with 1.3.8, lighttpd supports limiting the bandwidth for a single connection or config context like a virtual host or a URL.
Options¶
connection.kbytes-per-second
Limit the throughput for each single connection to the given limit in kbyte/s
Default: 0 (no limit)
server.kbytes-per-second
Limit the throughput for all connections to the given limit in kbyte/s
Default: 0 (no limit)
If you want to specify a limit for a special virtual server use:
$HTTP["host"] == "www.example.org" {
server.kbytes-per-second = 128
}
which will override the default for this host.
Note:
Keep in mind that a limit below 32kb/s might actually limit the traffic to 32kb/s.
This is caused by the size of the TCP send buffer.
Selective traffic shaping plugin(>=1.5-svn)¶
There is a small plugin to use selective traffic shaping on a per-connection base. You can e.g. use php and do:
<?php
header("X-LIGHTTPD-KBytes-per-second: 50");
header("X-Sendfile: /path/to/file");
?>
to set the speed of the current connection.
Plugin options¶
speed.just-copy-header = "enable"
Use this on the frontend to just copy the header from the response to the request header (forward it to the backend)
Default: "disabled" (just use it)
speed.use-request = "enable"
Use this on the backend to fetch the speed from the request. This is not useful on the frontend, i think :)
Default: "disabled" (don't look in the request headers)
Download here: http://trac.lighttpd.net/trac/attachment/wiki/Docs/TrafficShaping/mod_speed.c