chore(server/listener): improve comment
chore(server/listener): improve comment

fasaxc/etcd,bakins/etcd,giantswarm/etcd,sebschrader/etcd,oscarrr110/etcd,hongchaodeng/etcd,chenbaihu/etcd,barakmich/etcd,devfreesg/etcd,ylong/etcd,hzy001/etcd,dterei/etcd,bluebreezecf/etcd,mqliang/etcd,mwitkow/etcd,elimisteve/etcd,steveeJ/etcd,sinsharat/etcd,buaazp/etcd,sinsharat/etcd,axingblog/etcd,freeloop1114/etcd,kkaneda/etcd,qqsun8819/etcd,qiaochao911/etcd,devfreesg/etcd,spotify/etcd,armstrongli/etcd,ajityagaty/etcd,wantonsolutions/dinv-etcd,zaphod-concur/etcd,snailwalker/etcd,bspline/etcd,CrazyJvm/etcd,mkumatag/etcd,hongchaodeng/etcd,wfxiang08/etcd,cvik/etcd,iamqizhao/etcd,steveeJ/etcd,spotify/etcd,junxu/etcd,joshix/etcd,cockroachdb/etcd,westhood/etcd,YuleiXiao/etcd,buaazp/etcd,ecnahc515/etcd,mkumatag/etcd,xiang90/etcd,whuwxl/etcd,CrazyJvm/etcd,gityf/etcd,yichengq/etcd,etcd-io/etcd,coreos/etcd,betawaffle/etcd,jravetch/etcd,dnaeon/etcd,es-chow/etcd,fasaxc/etcd,bdarnell/etcd,mwitkow-io/etcd,mischief/etcd,chai2010/etcd,jefby/etcd,nkhare/etcd,xiang90/etcd,polvi/etcd,lumjjb/etcd,siddontang/etcd,svdata/etcd,onlyjob/etcd,lorneli/etcd,mqliang/etcd,swingbach/etcd,a-robinson/etcd,lumjjb/etcd,rnaveiras/etcd,bspline/etcd,OyTao/etcd_learning,nkhare/etcd,jeremyeder/etcd,dalanlan/etcd,honeyqa/etcd,chipironcin/etcd,snailwalker/etcd,jonboulle/etcd,tempbottle/etcd,jonboulle/etcd,armstrongli/etcd,delkyd/etcd,westhood/etcd,kingland/etcd,jchauncey/etcd,nekto0n/etcd,Timer/etcd,sayden/etcd,crandles/etcd,mkumatag/etcd,barakmich/etcd,nekto0n/etcd,etcd-io/etcd,cvik/etcd,es-chow/etcd,lorneli/etcd,SivagnanamCiena/etcd,combk8s/etcd,a-robinson/etcd,chenbaihu/etcd,lzbgt/etcd,beni55/etcd,lzbgt/etcd,robszumski/etcd,sofuture/etcd,StorReduce/etcd,ajityagaty/etcd,wowsoso/etcd,offscale/etcd,fasaxc/etcd,mgoelzer/etcd-fork2,cognusion/etcd,qiaochao911/etcd,yifan-gu/etcd,vimalk78/etcd,njharman/etcd,handsomesun/etcd,njharman/etcd,shafreeck/etcd,purpleidea/etcd,StorReduce/etcd,improbable-io/etcd,visheshnp/etcd,mike-lerch/etcd,spotify/etcd,sayden/etcd,achanda/etcd,beni55/etcd,etcd-io/etcd,raoofm/etcd,linuxcer/etcd,asim/etcd,xueshanf/etcd,jchauncey/etcd,njucslqq/etcd,mickep76/etcd,whuwxl/etcd,insequent/etcd,heyitsanthony/etcd,HideoYamauchi/etcd,pigfoot/etcd,tamird/etcd,HideoYamauchi/etcd,vimalk78/etcd,giantswarm/etcd,zaphod-concur/etcd,jmptrader/etcd,visheshnp/etcd,olark/etcd,gae123/etcd,spotify/etcd,jefby/etcd,Winslett/etcd,cvik/etcd,yudai/etcd,wantonsolutions/dinv-etcd,sebrandon1/etcd,luxas/etcd,openedbox/etcd,rnaveiras/etcd,bluebreezecf/etcd,xychu/etcd,robszumski/etcd,junxu/etcd,chai2010-playground/etcd,siddontang/etcd,Yhgenomics/etcd,arthurcolle/etcd,yyljlyy/etcd,xdlinear/etcd,rchicoli/etcd,dnaeon/etcd,youxidev/etcd,gosharplite/etcd,glensc/etcd,raoofm/etcd,olark/etcd,qqsun8819/etcd,chai2010-playground/etcd,freeloop1114/etcd,youxidev/etcd,cvik/etcd,betawaffle/etcd,hongbinz/etcd,sebrandon1/etcd,jravetch/etcd,shakefu/etcd,Yhgenomics/etcd,mickep76/etcd,dterei/etcd,ktateish/etcd,cchamplin/etcd,yyljlyy/etcd,xebitstudios/etcd,honeyqa/etcd,onlyjob/etcd,fgbreel/etcd,ajityagaty/etcd,oscarrr110/etcd,TheHippo/etcd,msanterre/etcd,insionng/etcd,jlamillan/etcd,ravigadde/etcd,chai2010/etcd,TheHippo/etcd,tamird/etcd,YuleiXiao/etcd,mitake/etcd,jmptrader/etcd,coreos/etcd,pengzj/etcd,SivagnanamCiena/etcd,jeremyeder/etcd,mwitkow/etcd,sebschrader/etcd,mwitkow-io/etcd,arthurcolle/etcd,xdlinear/etcd,insionng/etcd,delkyd/etcd,csuideal/etcd,princeqjzh/etcd,gityf/etcd,mike-lerch/etcd,heyitsanthony/etcd,csuideal/etcd,fanminshi/etcd,cognusion/etcd,gyuho/etcd,QuantiumTechnology/etcd,Timer/etcd,njucslqq/etcd,gtank/etcd,yudai/etcd,tangkun75/etcd,gosharplite/etcd,glensc/etcd,shafreeck/etcd,improbable-io/etcd,crandles/etcd,mitake/etcd,dannysauer/etcd,linuxcer/etcd,endocode/etcd,hpcloud/etcd,hroyrh/etcd,shawnps/etcd,yichengq/etcd,combk8s/etcd,QuantiumTechnology/etcd,ktateish/etcd,li-ang/etcd,rnaveiras/etcd,yifan-gu/etcd,sofuture/etcd,fgbreel/etcd,wowsoso/etcd,swingbach/etcd,nieanan/etcd,shawnps/etcd,fanminshi/etcd,tangkun75/etcd,tguangch/etcd,rchicoli/etcd,tempbottle/etcd,imzhulei/etcd,pauldallen/etcd,bakins/etcd,justintung/etcd,cchamplin/etcd,mgoelzer/etcd-fork2,polvi/etcd,gtank/etcd,wantonsolutions/dinv-etcd,li-ang/etcd,luxas/etcd,elimisteve/etcd,gyuho/etcd,joshix/etcd,hongbinz/etcd,akauppi/etcd,bdarnell/etcd,glevand/coreos--etcd,spacejam/etcd,plasticbox/etcd,justintung/etcd,asim/etcd,akauppi/etcd,kingland/etcd,gouyang/etcd,iamqizhao/etcd,handsomesun/etcd,gae123/etcd,pauldallen/etcd,hzy001/etcd,xychu/etcd,spacejam/etcd,glevand/coreos--etcd,hpcloud/etcd,msanterre/etcd,wfxiang08/etcd,gouyang/etcd,chipironcin/etcd,jlamillan/etcd,achanda/etcd,imzhulei/etcd,axingblog/etcd,pengzj/etcd,openedbox/etcd,Eagle-X/etcd,shakefu/etcd,dalanlan/etcd,insequent/etcd,dannysauer/etcd,mqliang/etcd,princeqjzh/etcd,xebitstudios/etcd,tguangch/etcd,ylong/etcd,glycerine/etcd,nieanan/etcd,xueshanf/etcd,svdata/etcd,cockroachdb/etcd,Eagle-X/etcd,endocode/etcd,hroyrh/etcd,offscale/etcd,purpleidea/etcd,mischief/etcd,ravigadde/etcd,glycerine/etcd,Winslett/etcd,ecnahc515/etcd,OyTao/etcd_learning,kkaneda/etcd,plasticbox/etcd