Long Time No See! Recently I was busy with testing mod_cache, which was more sophicated than expected. Here I want to present guys with mod_deflate before mod_cache's annoncement.
mod_deflate is a lighttpd plugin to compress content on fly. It's useful when you want to reduce your bandwidth consumption to 30% or lower:) my patch is based on jakabosky's 1.4.11 patch and fixed several big bugs includes:
1) fix loop bug when content-length is bigger than work-block-size*k
2) prevent compress on buggy http 1.0 client with Accept Encoding: gzip, deflate
3) fix bug with chunk transfer encoding (for examples in mod_fastcgi+php environment)
mod_deflate don't compress uri matched deflate.nocompress-url which is a pcre regex string.
I had used mod_deflate in production environments and found no noticable bugs or memory leak. Usually mod_deflate takes less than 10% CPU and eats up less than 100M memory. Full document is here
Here I want to say big thanks to Jakabosky, his mod_deflate patch makes mod_cache on lighttpd possible.
lighttpd 1.4.11自带的mod_trigger_b4_dl 只支持memcache和gdbm，所以把squid srcip补丁的功能移植过来。原来的mod_trigger_b4_dl也不支持在一个域名trigger控制其它域名的download功能，顺便一起改进了。
增加了trigger-before-download.udpaddr 配置参数，使用方法举例：
trigger-before-download.udpaddr = "10.10.1.1:20000″
$HTTP["host"] == "xxx.abc.com" {
trigger-before-download.trigger-url = ".html$"
}
$HTTP["host"] == "video.xxx.abc.com" {
trigger-before-download.deny-url = "http://xxx.abc.com/deny.jpg" #这个地方不要设置xxx.abc.com/，否则拒绝后访问xxx.abc.com 一般会触发上面的trigger-url
trigger-before-download.download-url = "^/"
trigger-before-download.trigger-timeout = 360
}
例子中的trigger-before-download.trigger-url和trigger-before-download.download-url 都是pcre的正则表达式。
lighttpd作者jan从rails conference 得到的最紧迫要求就是改进mod_proxy。上周jan痛下决心开始重写新的plugin mod_proxy_core，四天前发表在lighttpd blog上。mod_proxy_core 最终要实现的功能是：
- 通用基于lemon的http response分析器，将用于fastcgi, cgi,scgi,proxy module
- 底层使用滑动窗口(sliding window)发送数据
- 通用底层技术，支持failover，balancer，streaming等等
- 支持Fastcgi和HTTP的Keep Alive
- 在插件中使用连接队列，而不是使用lighttpd kernel里的队列，管理方便
- 发送到proxy之前可以重写request；接收proxy结果后可以重写response
功能还是很赞，mod_proxy_core最近频繁更新，大家盯紧lighttpd blog
贡献最近研究lighttpd的一个小成果：让mod_accesslog 支持COOKIE格式已经把访问日志发送到udp server的功能。
增加的控制参数是：accesslog.udpaddr = "10.1.1.1:6789″ # 格式 "ip:port"
accesslog.udpaddr可和accesslog.filename共存，也就是说能写访问日志到本地，同时也能用udp发送访问日志。
access.format 可以用COOKIE了，举例如下：
accesslog.format = "%h %l %u %t \"%m http://%v%U %H\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" \"%{my_uniq_ckid}C\""
今天公司某些服务器升级，变成只允许内网IP可以访问，需要跑socks5服务器。我选择dante，它缺省用/etc/passwd做用户认证。为保证安全，我改成用/etc/sockd.passwd做认证，文件格式用htpasswd的。
用法：htpasswd -c /etc/sockd.passwd user
补丁如下(缺省用/etc/sockd.passwd做认证文件)：
sockd.conf: