added caching for complex lookups

test.lua

@@ -0,0 +1,30 @@
+local socket = assert(require "socket.unix"())
+local function connect(path)
+	assert(socket:settimeout(.05))
+	local status,err = pcall(function() assert(socket:connect(path)) end)	
+	if status then return true end
+	io.stderr:write(err.." ("..path..")\n")
+	return false
+end
+
+local json = require "lunajson"
+local res
+
+if connect("/var/run/proxy_lookup.socket") then 
+	host = "payments.blah.com"
+
+	assert(socket:send(json.encode({domain = host})))
+	while 1 do
+		local s, status, partial = socket:receive()
+		if partial then
+			res = json.decode(partial)
+			break
+		end
+	end
+end
+
+
+print(res['ip'])
+
+
+