fixup! RelayHandler: support tighter integration with circuits
fixup! RelayHandler: support tighter integration with circuits

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