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Merge pull request #102213 from cheftako/grpc-client

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Upgrade konnectivity-client for GRPC connection fixes
This commit is contained in:
Kubernetes Prow Robot 2021-05-24 20:10:31 -07:00 committed by GitHub
commit 646acf096e
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GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 50 additions and 30 deletions
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2
cluster/gce/addons/konnectivity-agent/konnectivity-agent-ds.yaml
View File

@ -25,7 +25,7 @@ spec:
nodeSelector:
kubernetes.io/os: linux
containers:
- image: k8s.gcr.io/kas-network-proxy/proxy-agent:v0.0.15
- image: k8s.gcr.io/kas-network-proxy/proxy-agent:v0.0.19
name: konnectivity-agent
command: ["/proxy-agent"]
args: [

2
cluster/gce/manifests/konnectivity-server.yaml
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@ -20,7 +20,7 @@ spec:
{{ disallow_privilege_escalation}}
{{ capabilities }}
{{ drop_capabilities }}
image: k8s.gcr.io/kas-network-proxy/proxy-server:v0.0.15
image: k8s.gcr.io/kas-network-proxy/proxy-server:v0.0.19
resources:
requests:
cpu: 25m

2
go.mod
View File

@ -517,7 +517,7 @@ replace (
rsc.io/pdf => rsc.io/pdf v0.1.1
rsc.io/quote/v3 => rsc.io/quote/v3 v3.1.0
rsc.io/sampler => rsc.io/sampler v1.3.0
sigs.k8s.io/apiserver-network-proxy/konnectivity-client => sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15
sigs.k8s.io/apiserver-network-proxy/konnectivity-client => sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19
sigs.k8s.io/kustomize/api => sigs.k8s.io/kustomize/api v0.8.10
sigs.k8s.io/kustomize/cmd/config => sigs.k8s.io/kustomize/cmd/config v0.9.12
sigs.k8s.io/kustomize/kustomize/v4 => sigs.k8s.io/kustomize/kustomize/v4 v4.1.3

4
go.sum
View File

@ -586,8 +586,8 @@ modernc.org/xc v1.0.0/go.mod h1:mRNCo0bvLjGhHO9WsyuKVU4q0ceiDDDoEeWDJHrNx8I=
rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/kustomize/api v0.8.10 h1:CqbdK/qT7JE+uVETkrVMk7pQf0fPFXk9+QQ//Q7sAtc=
sigs.k8s.io/kustomize/api v0.8.10/go.mod h1:ImeIkhUU7GIhamOtKPlkllt+fkBKL5f6/4NLhVwkinA=
sigs.k8s.io/kustomize/cmd/config v0.9.12/go.mod h1:hVG/nPSqccrnogZ4ehzw3cTSR2fT6hdWeyojILHZivA=

4
staging/src/k8s.io/apiextensions-apiserver/go.sum generated
View File

@ -699,8 +699,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

2
staging/src/k8s.io/apiserver/go.mod
View File

@ -45,7 +45,7 @@ require (
k8s.io/klog/v2 v2.8.0
k8s.io/kube-openapi v0.0.0-20210421082810-95288971da7e
k8s.io/utils v0.0.0-20201110183641-67b214c5f920
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19
sigs.k8s.io/structured-merge-diff/v4 v4.1.1
sigs.k8s.io/yaml v1.2.0
)

4
staging/src/k8s.io/apiserver/go.sum generated
View File

@ -695,8 +695,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

4
staging/src/k8s.io/cloud-provider/go.sum generated
View File

@ -696,8 +696,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

4
staging/src/k8s.io/controller-manager/go.sum generated
View File

@ -887,8 +887,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

4
staging/src/k8s.io/kube-aggregator/go.sum generated
View File

@ -700,8 +700,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

2
staging/src/k8s.io/kube-controller-manager/go.sum generated
View File

@ -618,7 +618,7 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

2
staging/src/k8s.io/legacy-cloud-providers/go.sum generated
View File

@ -701,7 +701,7 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

4
staging/src/k8s.io/sample-apiserver/go.sum generated
View File

@ -697,8 +697,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 h1:4uqm9Mv+w2MmBYD+F4qf/v6tDFUdPOk29C095RbU5mY=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 h1:0jaDAAxtqIrrqas4vtTqxct4xS5kHfRNycTRLTyJmVM=
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1 h1:nYqY2A6oy37sKLYuSBXuQhbj4JVclzJK13BOIvJG5XU=
sigs.k8s.io/structured-merge-diff/v4 v4.1.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

4
vendor/modules.txt vendored
View File

@ -2235,7 +2235,7 @@ k8s.io/utils/path
k8s.io/utils/pointer
k8s.io/utils/strings
k8s.io/utils/trace
# sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15 => sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15
# sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19 => sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19
sigs.k8s.io/apiserver-network-proxy/konnectivity-client/pkg/client
sigs.k8s.io/apiserver-network-proxy/konnectivity-client/proto/client
# sigs.k8s.io/kustomize/api v0.8.10 => sigs.k8s.io/kustomize/api v0.8.10
@ -2702,7 +2702,7 @@ sigs.k8s.io/yaml
# rsc.io/pdf => rsc.io/pdf v0.1.1
# rsc.io/quote/v3 => rsc.io/quote/v3 v3.1.0
# rsc.io/sampler => rsc.io/sampler v1.3.0
# sigs.k8s.io/apiserver-network-proxy/konnectivity-client => sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15
# sigs.k8s.io/apiserver-network-proxy/konnectivity-client => sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.19
# sigs.k8s.io/kustomize/api => sigs.k8s.io/kustomize/api v0.8.10
# sigs.k8s.io/kustomize/cmd/config => sigs.k8s.io/kustomize/cmd/config v0.9.12
# sigs.k8s.io/kustomize/kustomize/v4 => sigs.k8s.io/kustomize/kustomize/v4 v4.1.3

36
vendor/sigs.k8s.io/apiserver-network-proxy/konnectivity-client/pkg/client/client.go generated vendored
View File

@ -19,6 +19,7 @@ package client
import (
"context"
"errors"
"fmt"
"io"
"math/rand"
"net"
@ -49,6 +50,10 @@ type grpcTunnel struct {
conns map[int64]*conn
pendingDialLock sync.RWMutex
connsLock sync.RWMutex
// The tunnel will be closed if the caller fails to read via conn.Read()
// more than readTimeoutSeconds after a packet has been received.
readTimeoutSeconds int
}
type clientConn interface {
@ -75,9 +80,10 @@ func CreateSingleUseGrpcTunnel(address string, opts ...grpc.DialOption) (Tunnel,
}
tunnel := &grpcTunnel{
stream: stream,
pendingDial: make(map[int64]chan<- dialResult),
conns: make(map[int64]*conn),
stream: stream,
pendingDial: make(map[int64]chan<- dialResult),
conns: make(map[int64]*conn),
readTimeoutSeconds: 10,
}
go tunnel.serve(c)
@ -110,10 +116,17 @@ func (t *grpcTunnel) serve(c clientConn) {
if !ok {
klog.V(1).Infoln("DialResp not recognized; dropped")
} else {
ch <- dialResult{
result := dialResult{
err: resp.Error,
connid: resp.ConnectID,
}
select {
case ch <- result:
default:
klog.ErrorS(fmt.Errorf("blocked pending channel"), "Received second dial response for connection request", "connectionID", resp.ConnectID, "dialID", resp.Random)
// On multiple dial responses, avoid leaking serve goroutine.
return
}
}
if resp.Error != "" {
@ -129,7 +142,14 @@ func (t *grpcTunnel) serve(c clientConn) {
t.connsLock.RUnlock()
if ok {
conn.readCh <- resp.Data
timer := time.NewTimer((time.Duration)(t.readTimeoutSeconds) * time.Second)
select {
case conn.readCh <- resp.Data:
timer.Stop()
case <-timer.C:
klog.ErrorS(fmt.Errorf("timeout"), "readTimeout has been reached, the grpc connection to the proxy server will be closed", "connectionID", conn.connID, "readTimeoutSeconds", t.readTimeoutSeconds)
return
}
} else {
klog.V(1).InfoS("connection not recognized", "connectionID", resp.ConnectID)
}
@ -160,8 +180,8 @@ func (t *grpcTunnel) Dial(protocol, address string) (net.Conn, error) {
return nil, errors.New("protocol not supported")
}
random := rand.Int63()
resCh := make(chan dialResult)
random := rand.Int63() /* #nosec G404 */
resCh := make(chan dialResult, 1)
t.pendingDialLock.Lock()
t.pendingDial[random] = resCh
t.pendingDialLock.Unlock()
@ -199,7 +219,7 @@ func (t *grpcTunnel) Dial(protocol, address string) (net.Conn, error) {
}
c.connID = res.connid
c.readCh = make(chan []byte, 10)
c.closeCh = make(chan string)
c.closeCh = make(chan string, 1)
t.connsLock.Lock()
t.conns[res.connid] = c
t.connsLock.Unlock()