Hunter的大杂烩 技术学习笔记

1. install dependencies
   1. yum install nginx
   2. yum install wget
2. open firewall
   1. firewall-cmd –permanent –zone=public –add-port=http/tcp
   2. firewall-cmd –permanent –zone=public –add-port=https/tcp
   3. firewall-cmd –reload

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[code language=”bash”]

LDFLAGS=’-lfreetype’ CFLAGS="-O3 -I/usr/include/freetype2" CXXFLAGS="-O3 -I/usr/include/freetype2" ./configure \
–with-apxs2=/usr/local/httpd24/bin/apxs –prefix=/usr/local/php –with-zlib –with-gd \
–enable-mbstring –with-mysql=/usr/local/mysql –with-mysqli=/usr/local/mysql/bin/mysql_config\
–with-pdo-mysql=/usr/local/mysql –with-config-file-path=/usr/local/php –with-iconv –with-libxml-dir –with-png-dir \
–with-freetype-dir –with-openssl –with-curl

[/code]

依赖项：

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有类似如下的单行json数据，希望提取其中的 add 字段

[code language=”json”]

[{”:False,’host’:”,’path’:”,’id’:’replace_yourself’,’tls’:”,’v’:’2′,’net’:’tcp’,’add’:’1.1.1.1′,’type’:’none’},{”:False,’host’:”,’path’:”,’tls’:”,’id’:’replace_yourself’,’v’:’2′,’aid’:’2′,’net’:’tcp’,’add’:’2.2.2.2′,’type’:’none’}]

[/code]

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因为要实现一个简单的网络服务性能测试工具，需要衡量TCP CONNECT环节耗时，发现目前网上对于python 2下的非阻塞connect/send/recv介绍很少，于是自己实现了一个

参考：

https://docs.python.org/2/howto/sockets.html#sockets

https://docs.python.org/2/howto/sockets.html#non-blocking-sockets

https://learnku.com/docs/pymotw/select-wait-for-io-efficiently/3429

https://stackoverflow.com/questions/8277970/what-are-possible-reason-for-socket-error-einprogress-in-solaris

https://www.cnblogs.com/MnCu8261/p/6403340.html

https://gist.github.com/hduffddybz/daa4c931f6ea0bd7ed93

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路由器内自带的APP（比如下载大师）使用的是asusware套件，该套件安装到u盘后，会建立软链到 /tmp/opt ，而entware也要占用/tmp/opt 入口，所以两者不能同时安装。

如果不小心安装了APP，导致/tmp/opt 入口被 asusware占用，可以手动修改/jffs/addons/diversion/mount-entware.div 文件的24和26行：

[code lang=”bash”]

if [ "$opkgFile" ] && [ ! -f /opt/bin/opkg ]; then
mount_entware $1
elif [ "$opkgFile" ] && [ -f /opt/bin/opkg ]; then
logger -t Entware "Not starting Entware services on $1, Entware is already started"

[/code]

确保entware初始化时，能覆盖掉asusware的入口