lua module 'ltn12' not found 问题解决

[root@localhost resty]# lua client.lua
lua: client.lua:12: module 'ltn12' not found:
        no field package.preload['ltn12']
        no file './ltn12.lua'
        no file '/usr/local/share/lua/5.1/ltn12.lua'
        no file '/usr/local/share/lua/5.1/ltn12/init.lua'
        no file '/usr/local/lib/lua/5.1/ltn12.lua'
        no file '/usr/local/lib/lua/5.1/ltn12/init.lua'
        no file './ltn12.so'
        no file '/usr/local/lib/lua/5.1/ltn12.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
        [C]: in function 'require'
        client.lua:12: in main chunk

        [C]: ?

这个小问题 需要安装 luasocket-2.0.2.tar.gz 这个库就OK了。