从loopback mongodb驱动程序连接时如何增加Mongolab的连接超时

I have hosted my mongodb in mongolab. I have created a ODM in loopback and made a connection to mongolab. Sometimes the connection gets established but other times due to bad connection it gets timedout. I want to increase this timeout so that it does get connected everytime. I did not find any solution even on Strongloop site.I have hosted my mongodb in mongolab. I have cr