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client: surface a connection error more clearly

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gRPC-Go recently added grpc.WithReturnConnectionError() which improves
the situation of #2576.

Permission errors:

  % ./bin/ctr t ls
  ctr: failed to dial "/run/containerd/containerd.sock": connection error: desc = "transport: error while dialing: dial unix /run/containerd/containerd.sock: connect: permission denied"
  %

Non-existent sockets:

  % ./bin/ctr -a notfound t ls
  ctr: failed to dial "notfound": context deadline exceeded: connection error: desc = "transport: error while dialing: dial unix://notfound: timeout"
  %

Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
This commit is contained in:
Kazuyoshi Kato 2020-08-03 13:08:28 -07:00
parent 25d7f907c0
commit 73d28ddeb2
1 changed files with 1 additions and 0 deletions
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1
client.go
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@ -123,6 +123,7 @@ func New(address string, opts ...ClientOpt) (*Client, error) {
grpc.FailOnNonTempDialError(true),
grpc.WithConnectParams(connParams),
grpc.WithContextDialer(dialer.ContextDialer),
grpc.WithReturnConnectionError(),
// TODO(stevvooe): We may need to allow configuration of this on the client.
grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(defaults.DefaultMaxRecvMsgSize)),