socket leak with mha 0.56

[blylei]

Hi，my deployment like below:

• mha: 0.56 (soure code build), include mange and node
• os : CentOS release 6.5 (Final)

Recently,I meet this error:
mha manage has too many sock file that indecate "can't identify protocol", I want to know why this happend and how to fix it