add a relay error test
add a relay error test

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