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Wire up json socket as a named pipe with metdata exchange to daemon

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This commit is contained in:
Theodor S. Midtlien
2026-07-23 20:27:06 +02:00
parent 2f84aa3d20
commit f60ac9e746
10 changed files with 139 additions and 41 deletions
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client/cmd/root.go
+22 -13
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@@ -269,18 +269,17 @@ func FlagNameToEnvVar(cmdFlag string, prefix string) string {
}
// DialClientGRPCServer returns client connection to the daemon server.
func DialClientGRPCServer(ctx context.Context, addr string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*10)
defer cancel()
opts = append([]grpc.DialOption{
grpc.WithTransportCredentials(insecure.NewCredentials()),
grpc.WithBlock()}, opts...)
// The daemon reads the caller's kernel identity from the transport
// (SO_PEERCRED on a Unix socket, the client token on a Windows named pipe),
// so the client stays insecure. For npipe we install a context dialer since
// gRPC's resolver does not understand Windows named pipes.
// daemonDialTarget returns the gRPC dial target and base options for the daemon
// address, handling the npipe scheme (Windows named pipe, via a context dialer)
// and unix/tcp. It sets insecure transport credentials but NOT WithBlock, so it
// serves both the blocking CLI dial and the JSON gateway's lazy client.
//
// The daemon reads the caller's kernel identity from the transport (SO_PEERCRED
// on a Unix socket, the client token on a Windows named pipe), so the client
// stays insecure. gRPC's resolver does not understand Windows named pipes, hence
// the context dialer.
func daemonDialTarget(addr string) (string, []grpc.DialOption) {
opts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
target := strings.TrimPrefix(addr, "tcp://")
if strings.HasPrefix(addr, "npipe://") {
path := pipePath(strings.TrimPrefix(addr, "npipe://"))
@@ -289,8 +288,18 @@ func DialClientGRPCServer(ctx context.Context, addr string, opts ...grpc.DialOpt
}))
target = "passthrough:///netbird-daemon-pipe"
}
return target, opts
}
return grpc.DialContext(ctx, target, opts...)
func DialClientGRPCServer(ctx context.Context, addr string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*10)
defer cancel()
target, dialOpts := daemonDialTarget(addr)
dialOpts = append(dialOpts, grpc.WithBlock())
dialOpts = append(dialOpts, opts...)
return grpc.DialContext(ctx, target, dialOpts...)
}
// WithBackOff execute function in backoff cycle.