Convert integer to IP

davidmuscut · 2017-08-24T21:07:38+00:00

That's awesome!Nice solution to the IPC and TTL problems :)I never did get around to fixing those in resty-tlcOn Thursday, 24 August 2017 02:54:39 UTC+1,...

Convert integer to IP

davidmuscut

In Lua 5.3 I can convert an integer into an IP using the following bitwise syntax:

ipint = 911308623
return (ipint >> 24&0xff).. "." .. (ipint >> 16&0xff).. "." .. (ipint >> 8&0xff) .. "." .. (ipint&0xff)

How can I implement this within OpenResty?

davidmuscut

On Thursday, August 24, 2017 at 4:07:38 PM UTC+3, david...@gmail.com wrote:

In Lua 5.3 I can convert an integer into an IP using the following bitwise syntax:

ipint = 911308623
return (ipint >> 24&0xff).. "." .. (ipint >> 16&0xff).. "." .. (ipint >> 8&0xff) .. "." .. (ipint&0xff)

How can I implement this within OpenResty?

For future reference, in case this helps someone else:

local bit = require("bit")

    ip = bit.band(bit.rshift(ipint,24),0xff) .."."..
         bit.band(bit.rshift(ipint,16),0xff) .."."..
         bit.band(bit.rshift(ipint,8),0xff) .."."..
         bit.band(bit.rshift(ipint,0),0xff)