ensure the socket is always closed
ensure the socket is always closed

sasa233/tchannel,benfleis/tchannel,savaki/tchannel,vanloswang/tchannel,bunnyblue/tchannel,RyanTech/tchannel,Zirpon/tchannel,savaki/tchannel,savaki/tchannel,sasa233/tchannel,davewhat/tchannel,benfleis/tchannel,i/tchannel,bunnyblue/tchannel,chenwenbin928/tchannel,chenwenbin928/tchannel,Zirpon/tchannel,vanloswang/tchannel,benfleis/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,vanloswang/tchannel,chenwenbin928/tchannel,sasa233/tchannel,davewhat/tchannel,bunnyblue/tchannel,hustxiaoc/tchannel,i/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,RyanTech/tchannel,i/tchannel