“module 'socket.http' not found:” -- 在 iMac 上的 Lua 中。

当我在终端中运行我的代码时，我收到以下错误/信息：

module 'socket.http' not found:
    no field package.preload['socket.http']
    no file '/usr/local/share/lua/5.2/socket/http.lua'
    no file '/usr/local/share/lua/5.2/socket/http/init.lua'
    no file '/usr/local/lib/lua/5.2/socket/http.lua'
    no file '/usr/local/lib/lua/5.2/socket/http/init.lua'
    no file './socket/http.lua'
    no file '/usr/local/lib/lua/5.2/socket/http.so'
    no file '/usr/local/lib/lua/5.2/loadall.so'
    no file './socket/http.so'
    no file '/usr/local/lib/lua/5.2/socket.so'
    no file '/usr/local/lib/lua/5.2/loadall.so'
    no file './socket.so'

一些来源让我研究 LuaSocket，但我仍然不知道该怎么做或如何安装它。