LuaSocket problem with HAProxy (no replies)

Hello list,

I’m using HAProxy-1.6 with Lua. My use case involves a Lua extension
library LuaSocket and I’m having problems configuring HAProxy to use
LuaSocket.

When I use LuaSocket directly in Lua everything works fine:

[bowen ~]$ lua

Lua 5.3.0 Copyright (C) 1994-2015 Lua.org, PUC-Rio

> require("socket")

table: 0x22faef0

>

However there are some problems when I use LuaSocket in a Lua file loaded
by HAProxy.

My config looks like:

global

lua-load hello.lua

…

…

My hello.lua is very simple:

require(“socket”)

It’s throwing the following error:

[bowen ~]$ haproxy -f config -c

[ALERT] 162/193812 (5636) : parsing [config:2] : lua runtime error: error
loading module 'socket.core' from file
'/usr/local/lib/lua/5.3/socket/core.so':

/usr/local/lib/lua/5.3/socket/core.so: undefined symbol: lua_getmetatable

My environment is linux 2.6.32. LuaSocket was installed via LuaRocks

Any ideas? Thanks in advance.

Best,
Bowen