c/s json protocol example

lualib/jsonpack.lua

@@ -0,0 +1,19 @@
+local cjson = require "cjson"
+
+local jsonpack = {}
+
+function jsonpack.pack(session, v)
+	return string.format("%d+%s", session, cjson.encode(v))
+end
+
+function jsonpack.response(session, v)
+	return string.format("%d-%s",session, cjson.encode(v))
+end
+
+function jsonpack.unpack(msg)
+	local session,t,str = string.match(msg, "(%d+)(.)(.*)")
+	assert(t == '+')
+	return tonumber(session) , cjson.decode(str)
+end
+
+return jsonpack