fix bug in Server.KillAsync()
fix bug in Server.KillAsync()

quizlet/grpc,kpayson64/grpc,ananthonline/grpc,soltanmm-google/grpc,Vizerai/grpc,deepaklukose/grpc,yongni/grpc,grani/grpc,ananthonline/grpc,kumaralokgithub/grpc,tamihiro/grpc,quizlet/grpc,jcanizales/grpc,philcleveland/grpc,jboeuf/grpc,dklempner/grpc,Crevil/grpc,goldenbull/grpc,muxi/grpc,stanley-cheung/grpc,malexzx/grpc,ananthonline/grpc,quizlet/grpc,donnadionne/grpc,rjshade/grpc,sreecha/grpc,Vizerai/grpc,jboeuf/grpc,yang-g/grpc,ipylypiv/grpc,wcevans/grpc,VcamX/grpc,yongni/grpc,ncteisen/grpc,daniel-j-born/grpc,kriswuollett/grpc,ctiller/grpc,arkmaxim/grpc,deepaklukose/grpc,daniel-j-born/grpc,muxi/grpc,nicolasnoble/grpc,podsvirov/grpc,podsvirov/grpc,ctiller/grpc,wcevans/grpc,vsco/grpc,7anner/grpc,thinkerou/grpc,PeterFaiman/ruby-grpc-minimal,greasypizza/grpc,msmania/grpc,leifurhauks/grpc,podsvirov/grpc,daniel-j-born/grpc,pszemus/grpc,royalharsh/grpc,daniel-j-born/grpc,dgquintas/grpc,wcevans/grpc,Vizerai/grpc,rjshade/grpc,VcamX/grpc,makdharma/grpc,kumaralokgithub/grpc,sreecha/grpc,royalharsh/grpc,royalharsh/grpc,zhimingxie/grpc,vjpai/grpc,a11r/grpc,7anner/grpc,thinkerou/grpc,perumaalgoog/grpc,goldenbull/grpc,yugui/grpc,thinkerou/grpc,thunderboltsid/grpc,fuchsia-mirror/third_party-grpc,deepaklukose/grpc,grani/grpc,matt-kwong/grpc,makdharma/grpc,malexzx/grpc,vsco/grpc,infinit/grpc,deepaklukose/grpc,grpc/grpc,pmarks-net/grpc,fuchsia-mirror/third_party-grpc,ananthonline/grpc,ncteisen/grpc,pszemus/grpc,goldenbull/grpc,adelez/grpc,soltanmm/grpc,arkmaxim/grpc,Crevil/grpc,y-zeng/grpc,kumaralokgithub/grpc,a11r/grpc,yugui/grpc,y-zeng/grpc,carl-mastrangelo/grpc,soltanmm-google/grpc,stanley-cheung/grpc,simonkuang/grpc,chrisdunelm/grpc,baylabs/grpc,murgatroid99/grpc,zhimingxie/grpc,yugui/grpc,makdharma/grpc,jcanizales/grpc,LuminateWireless/grpc,donnadionne/grpc,kumaralokgithub/grpc,VcamX/grpc,firebase/grpc,sreecha/grpc,miselin/grpc,infinit/grpc,mehrdada/grpc,kpayson64/grpc,rjshade/grpc,zhimingxie/grpc,muxi/grpc,pmarks-net/grpc,muxi/grpc,makdharma/grpc,bogdandrutu/grpc,infinit/grpc,adelez/grpc,7anner/grpc,pszemus/grpc,vsco/grpc,msiedlarek/grpc,ncteisen/grpc,kskalski/grpc,msmania/grpc,grani/grpc,zhimingxie/grpc,pmarks-net/grpc,murgatroid99/grpc,podsvirov/grpc,jcanizales/grpc,bogdandrutu/grpc,mehrdada/grpc,Vizerai/grpc,perumaalgoog/grpc,ncteisen/grpc,7anner/grpc,MakMukhi/grpc,greasypizza/grpc,yugui/grpc,murgatroid99/grpc,andrewpollock/grpc,pmarks-net/grpc,adelez/grpc,matt-kwong/grpc,hstefan/grpc,yugui/grpc,kpayson64/grpc,firebase/grpc,simonkuang/grpc,royalharsh/grpc,stanley-cheung/grpc,baylabs/grpc,donnadionne/grpc,carl-mastrangelo/grpc,deepaklukose/grpc,murgatroid99/grpc,kumaralokgithub/grpc,thunderboltsid/grpc,pszemus/grpc,wcevans/grpc,jboeuf/grpc,apolcyn/grpc,greasypizza/grpc,zhimingxie/grpc,ejona86/grpc,firebase/grpc,ejona86/grpc,quizlet/grpc,carl-mastrangelo/grpc,MakMukhi/grpc,MakMukhi/grpc,andrewpollock/grpc,grpc/grpc,ncteisen/grpc,kskalski/grpc,tengyifei/grpc,vjpai/grpc,thunderboltsid/grpc,yongni/grpc,sreecha/grpc,mehrdada/grpc,y-zeng/grpc,podsvirov/grpc,y-zeng/grpc,grpc/grpc,pmarks-net/grpc,adelez/grpc,kskalski/grpc,tamihiro/grpc,jtattermusch/grpc,jboeuf/grpc,quizlet/grpc,a11r/grpc,jcanizales/grpc,deepaklukose/grpc,tamihiro/grpc,leifurhauks/grpc,firebase/grpc,goldenbull/grpc,pszemus/grpc,vjpai/grpc,PeterFaiman/ruby-grpc-minimal,maxwell-demon/grpc,ppietrasa/grpc,grpc/grpc,kskalski/grpc,carl-mastrangelo/grpc,greasypizza/grpc,muxi/grpc,royalharsh/grpc,LuminateWireless/grpc,jboeuf/grpc,infinit/grpc,msmania/grpc,mehrdada/grpc,vjpai/grpc,infinit/grpc,dklempner/grpc,ppietrasa/grpc,sreecha/grpc,daniel-j-born/grpc,ipylypiv/grpc,kpayson64/grpc,y-zeng/grpc,fuchsia-mirror/third_party-grpc,y-zeng/grpc,ananthonline/grpc,murgatroid99/grpc,dgquintas/grpc,bogdandrutu/grpc,goldenbull/grpc,thunderboltsid/grpc,malexzx/grpc,tamihiro/grpc,chrisdunelm/grpc,ctiller/grpc,soltanmm/grpc,soltanmm-google/grpc,goldenbull/grpc,philcleveland/grpc,thunderboltsid/grpc,a11r/grpc,donnadionne/grpc,kriswuollett/grpc,rjshade/grpc,msiedlarek/grpc,makdharma/grpc,firebase/grpc,nicolasnoble/grpc,kpayson64/grpc,firebase/grpc,grani/grpc,jcanizales/grpc,ppietrasa/grpc,fuchsia-mirror/third_party-grpc,a11r/grpc,vjpai/grpc,arkmaxim/grpc,perumaalgoog/grpc,mehrdada/grpc,jboeuf/grpc,dklempner/grpc,LuminateWireless/grpc,Vizerai/grpc,rjshade/grpc,baylabs/grpc,simonkuang/grpc,kriswuollett/grpc,malexzx/grpc,a11r/grpc,donnadionne/grpc,LuminateWireless/grpc,a-veitch/grpc,grani/grpc,kskalski/grpc,grpc/grpc,simonkuang/grpc,soltanmm/grpc,malexzx/grpc,carl-mastrangelo/grpc,infinit/grpc,hstefan/grpc,goldenbull/grpc,PeterFaiman/ruby-grpc-minimal,soltanmm/grpc,pszemus/grpc,muxi/grpc,firebase/grpc,fuchsia-mirror/third_party-grpc,vsco/grpc,nicolasnoble/grpc,Vizerai/grpc,yongni/grpc,Crevil/grpc,simonkuang/grpc,yang-g/grpc,andrewpollock/grpc,thinkerou/grpc,kskalski/grpc,a-veitch/grpc,jcanizales/grpc,podsvirov/grpc,sreecha/grpc,kriswuollett/grpc,geffzhang/grpc,arkmaxim/grpc,chrisdunelm/grpc,jtattermusch/grpc,royalharsh/grpc,firebase/grpc,grani/grpc,leifurhauks/grpc,ejona86/grpc,makdharma/grpc,soltanmm-google/grpc,pszemus/grpc,ctiller/grpc,bogdandrutu/grpc,miselin/grpc,vsco/grpc,thinkerou/grpc,nicolasnoble/grpc,chrisdunelm/grpc,carl-mastrangelo/grpc,fuchsia-mirror/third_party-grpc,philcleveland/grpc,hstefan/grpc,ananthonline/grpc,grpc/grpc,jtattermusch/grpc,a11r/grpc,kumaralokgithub/grpc,7anner/grpc,geffzhang/grpc,simonkuang/grpc,ejona86/grpc,dklempner/grpc,thinkerou/grpc,soltanmm/grpc,tengyifei/grpc,donnadionne/grpc,LuminateWireless/grpc,sreecha/grpc,ananthonline/grpc,jtattermusch/grpc,pmarks-net/grpc,jtattermusch/grpc,kriswuollett/grpc,grpc/grpc,stanley-cheung/grpc,Vizerai/grpc,tamihiro/grpc,kriswuollett/grpc,bogdandrutu/grpc,tengyifei/grpc,yongni/grpc,dklempner/grpc,yongni/grpc,muxi/grpc,tengyifei/grpc,Vizerai/grpc,daniel-j-born/grpc,geffzhang/grpc,pszemus/grpc,yongni/grpc,ipylypiv/grpc,ejona86/grpc,simonkuang/grpc,adelez/grpc,dgquintas/grpc,daniel-j-born/grpc,wcevans/grpc,miselin/grpc,mehrdada/grpc,baylabs/grpc,wcevans/grpc,podsvirov/grpc,goldenbull/grpc,grpc/grpc,donnadionne/grpc,muxi/grpc,vjpai/grpc,y-zeng/grpc,malexzx/grpc,tengyifei/grpc,infinit/grpc,ejona86/grpc,apolcyn/grpc,mehrdada/grpc,kpayson64/grpc,ppietrasa/grpc,geffzhang/grpc,muxi/grpc,LuminateWireless/grpc,baylabs/grpc,ctiller/grpc,greasypizza/grpc,Crevil/grpc,msmania/grpc,hstefan/grpc,muxi/grpc,MakMukhi/grpc,geffzhang/grpc,ncteisen/grpc,MakMukhi/grpc,geffzhang/grpc,murgatroid99/grpc,kpayson64/grpc,chrisdunelm/grpc,leifurhauks/grpc,deepaklukose/grpc,donnadionne/grpc,7anner/grpc,miselin/grpc,donnadionne/grpc,quizlet/grpc,thinkerou/grpc,greasypizza/grpc,grani/grpc,arkmaxim/grpc,dgquintas/grpc,philcleveland/grpc,tengyifei/grpc,nicolasnoble/grpc,a-veitch/grpc,maxwell-demon/grpc,bogdandrutu/grpc,thunderboltsid/grpc,deepaklukose/grpc,PeterFaiman/ruby-grpc-minimal,ppietrasa/grpc,philcleveland/grpc,MakMukhi/grpc,ncteisen/grpc,stanley-cheung/grpc,jtattermusch/grpc,ctiller/grpc,jboeuf/grpc,soltanmm-google/grpc,fuchsia-mirror/third_party-grpc,firebase/grpc,yugui/grpc,bogdandrutu/grpc,zhimingxie/grpc,yang-g/grpc,jboeuf/grpc,infinit/grpc,wcevans/grpc,philcleveland/grpc,deepaklukose/grpc,yang-g/grpc,leifurhauks/grpc,kpayson64/grpc,arkmaxim/grpc,yongni/grpc,adelez/grpc,quizlet/grpc,yugui/grpc,nicolasnoble/grpc,jboeuf/grpc,philcleveland/grpc,carl-mastrangelo/grpc,vjpai/grpc,makdharma/grpc,maxwell-demon/grpc,kpayson64/grpc,miselin/grpc,tamihiro/grpc,miselin/grpc,chrisdunelm/grpc,ipylypiv/grpc,zhimingxie/grpc,goldenbull/grpc,tamihiro/grpc,nicolasnoble/grpc,jtattermusch/grpc,philcleveland/grpc,kumaralokgithub/grpc,perumaalgoog/grpc,mehrdada/grpc,stanley-cheung/grpc,msiedlarek/grpc,Crevil/grpc,simonkuang/grpc,matt-kwong/grpc,apolcyn/grpc,thinkerou/grpc,philcleveland/grpc,chrisdunelm/grpc,vsco/grpc,dgquintas/grpc,dgquintas/grpc,ncteisen/grpc,hstefan/grpc,thunderboltsid/grpc,murgatroid99/grpc,matt-kwong/grpc,jcanizales/grpc,ppietrasa/grpc,soltanmm/grpc,PeterFaiman/ruby-grpc-minimal,soltanmm-google/grpc,ejona86/grpc,msiedlarek/grpc,arkmaxim/grpc,pmarks-net/grpc,firebase/grpc,maxwell-demon/grpc,VcamX/grpc,ipylypiv/grpc,chrisdunelm/grpc,ejona86/grpc,msmania/grpc,andrewpollock/grpc,kskalski/grpc,Crevil/grpc,ctiller/grpc,yugui/grpc,jboeuf/grpc,PeterFaiman/ruby-grpc-minimal,firebase/grpc,vsco/grpc,vsco/grpc,arkmaxim/grpc,andrewpollock/grpc,grpc/grpc,stanley-cheung/grpc,zhimingxie/grpc,miselin/grpc,maxwell-demon/grpc,ncteisen/grpc,apolcyn/grpc,jtattermusch/grpc,stanley-cheung/grpc,MakMukhi/grpc,7anner/grpc,kumaralokgithub/grpc,adelez/grpc,vjpai/grpc,ppietrasa/grpc,apolcyn/grpc,ejona86/grpc,pszemus/grpc,dgquintas/grpc,pszemus/grpc,dgquintas/grpc,maxwell-demon/grpc,royalharsh/grpc,kpayson64/grpc,greasypizza/grpc,malexzx/grpc,royalharsh/grpc,maxwell-demon/grpc,hstefan/grpc,a11r/grpc,makdharma/grpc,perumaalgoog/grpc,ncteisen/grpc,MakMukhi/grpc,grpc/grpc,hstefan/grpc,yugui/grpc,rjshade/grpc,ctiller/grpc,ctiller/grpc,wcevans/grpc,ananthonline/grpc,perumaalgoog/grpc,miselin/grpc,VcamX/grpc,thunderboltsid/grpc,zhimingxie/grpc,msmania/grpc,dgquintas/grpc,a-veitch/grpc,sreecha/grpc,Vizerai/grpc,yang-g/grpc,msiedlarek/grpc,muxi/grpc,tengyifei/grpc,greasypizza/grpc,nicolasnoble/grpc,LuminateWireless/grpc,jtattermusch/grpc,thinkerou/grpc,chrisdunelm/grpc,PeterFaiman/ruby-grpc-minimal,carl-mastrangelo/grpc,jcanizales/grpc,soltanmm-google/grpc,dklempner/grpc,leifurhauks/grpc,pszemus/grpc,mehrdada/grpc,y-zeng/grpc,kpayson64/grpc,matt-kwong/grpc,stanley-cheung/grpc,ctiller/grpc,7anner/grpc,rjshade/grpc,leifurhauks/grpc,sreecha/grpc,PeterFaiman/ruby-grpc-minimal,tamihiro/grpc,dklempner/grpc,ananthonline/grpc,daniel-j-born/grpc,andrewpollock/grpc,kskalski/grpc,mehrdada/grpc,ejona86/grpc,baylabs/grpc,daniel-j-born/grpc,soltanmm-google/grpc,apolcyn/grpc,thinkerou/grpc,a-veitch/grpc,vsco/grpc,PeterFaiman/ruby-grpc-minimal,mehrdada/grpc,arkmaxim/grpc,jtattermusch/grpc,murgatroid99/grpc,msmania/grpc,msmania/grpc,ncteisen/grpc,kriswuollett/grpc,carl-mastrangelo/grpc,dklempner/grpc,grani/grpc,matt-kwong/grpc,PeterFaiman/ruby-grpc-minimal,royalharsh/grpc,ctiller/grpc,pszemus/grpc,podsvirov/grpc,stanley-cheung/grpc,fuchsia-mirror/third_party-grpc,quizlet/grpc,yang-g/grpc,donnadionne/grpc,baylabs/grpc,perumaalgoog/grpc,murgatroid99/grpc,kumaralokgithub/grpc,sreecha/grpc,murgatroid99/grpc,infinit/grpc,vjpai/grpc,msmania/grpc,geffzhang/grpc,firebase/grpc,grani/grpc,maxwell-demon/grpc,vjpai/grpc,bogdandrutu/grpc,nicolasnoble/grpc,donnadionne/grpc,sreecha/grpc,fuchsia-mirror/third_party-grpc,msiedlarek/grpc,LuminateWireless/grpc,mehrdada/grpc,geffzhang/grpc,jboeuf/grpc,LuminateWireless/grpc,dgquintas/grpc,carl-mastrangelo/grpc,perumaalgoog/grpc,yongni/grpc,nicolasnoble/grpc,thinkerou/grpc,baylabs/grpc,matt-kwong/grpc,yang-g/grpc,soltanmm/grpc,tamihiro/grpc,msiedlarek/grpc,simonkuang/grpc,VcamX/grpc,matt-kwong/grpc,VcamX/grpc,malexzx/grpc,ppietrasa/grpc,podsvirov/grpc,muxi/grpc,yang-g/grpc,adelez/grpc,apolcyn/grpc,ipylypiv/grpc,ipylypiv/grpc,vjpai/grpc,ipylypiv/grpc,andrewpollock/grpc,ipylypiv/grpc,chrisdunelm/grpc,kriswuollett/grpc,geffzhang/grpc,hstefan/grpc,MakMukhi/grpc,Vizerai/grpc,miselin/grpc,jcanizales/grpc,rjshade/grpc,kskalski/grpc,apolcyn/grpc,chrisdunelm/grpc,msiedlarek/grpc,andrewpollock/grpc,ejona86/grpc,nicolasnoble/grpc,makdharma/grpc,malexzx/grpc,a-veitch/grpc,Vizerai/grpc,Crevil/grpc,tengyifei/grpc,a-veitch/grpc,matt-kwong/grpc,andrewpollock/grpc,adelez/grpc,soltanmm-google/grpc,soltanmm/grpc,7anner/grpc,kriswuollett/grpc,thinkerou/grpc,sreecha/grpc,apolcyn/grpc,greasypizza/grpc,rjshade/grpc,soltanmm/grpc,msiedlarek/grpc,jtattermusch/grpc,stanley-cheung/grpc,VcamX/grpc,pmarks-net/grpc,pmarks-net/grpc,bogdandrutu/grpc,hstefan/grpc,carl-mastrangelo/grpc,ppietrasa/grpc,jboeuf/grpc,ctiller/grpc,leifurhauks/grpc,yang-g/grpc,Crevil/grpc,a11r/grpc,ejona86/grpc,leifurhauks/grpc,dklempner/grpc,a-veitch/grpc,maxwell-demon/grpc,ncteisen/grpc,carl-mastrangelo/grpc,quizlet/grpc,fuchsia-mirror/third_party-grpc,donnadionne/grpc,perumaalgoog/grpc,jtattermusch/grpc,stanley-cheung/grpc,VcamX/grpc,baylabs/grpc,y-zeng/grpc,grpc/grpc,dgquintas/grpc,tengyifei/grpc,thunderboltsid/grpc,a-veitch/grpc,Crevil/grpc,grpc/grpc,nicolasnoble/grpc,vjpai/grpc,wcevans/grpc