Get Metadata Fields from DpiMessage (String, Int, Long)

function Flow_GetFieldFromDpiMessage (dpiMsg, ruleEngine)

  if (IsFinalShortFlow(dpiMsg)) then

    require 'LOG'

    -- Example for Internal fields.

    local protocol = GetString(dpiMsg, "Internal", "applicationpath");

    local srcport = GetInt(dpiMsg, "Internal", "srcport");

    local messageSize = GetLong(dpiMsg, "Internal", "messagesize");

    EZINFO("Src Port: ", srcport);

    EZINFO("Message Size: ", messageSize);

    local app = GetLatestApplication(dpiMsg);

    if (app == 'http') then

      local uri = GetString(dpiMsg, "http", "uri_full");

      local code = GetInt(dpiMsg, "http", "code");

      local contentLen = GetLong(dpiMsg, "http", "content_len");

      EZINFO("URI: ", uri);

      EZINFO("HTTP CODE: ", code);

      EZINFO("HTTP CONTENT LENGTH: ", contentLen);

    end

  end

end