nginx-domain-forwarding

nginx-forwarding.lua

-- yunxing.cyx @ 2014-04-09
-- yunxing.cyx @ 2014-05-16 fix bug , use ngx.var.host to fetch domain name
-- load from pesystem
local host_header = ngx.var.host
local resp = ngx.location.capture("/forwarding/domain/host/" .. host_header)
if resp.status ~= 200 then
   ngx.header.content_type = 'text/plain'
   ngx.say("forwarding target for " .. host_header .. " can not be found !")
   ngx.exit(ngx.HTTP_OK)
end
-- parse
loadstring("forwarding_info = " .. resp.body)()
if forwarding_info.success then
   ngx.var.dest_host = forwarding_info.data.hostName
   ngx.var.dest_port = forwarding_info.data.port
   return
end
-- error
ngx.header.content_type = 'text/plain'
ngx.say("failure to get forwarding target " .. host_header .. " : " .. forwarding_info.data)
ngx.exit(ngx.HTTP_OK)
return