server.js

    // Catch error and log
    try {
      // Parse the data as a reply object
      reply = new MongoReply(parent, message);        
    } catch(err) {
      var errObj = {err:"unparsable", bin:message, parseState:err};
      server.logger.error("mongoreplyParserError", errObj);
      return parent.emit("error", errObj);
    }