开发 dgram.t 时, 运行总是报错:
Can't determine section names. Need two sections in first block at t/dgram.t line 0.
END failed--call queue aborted.

原因是我 注释了 repeat_each和plan , 在use Test::Nginx::Socket::Lua::Stream后面添加 'no_plan', 脚本运行成功. 具体原理不知.