WIP TOFU socket ownership

client/cmd/peercred_unsupported.go

@@ -0,0 +1,16 @@
+//go:build !linux && !darwin && !freebsd
+
+package cmd
+
+import (
+	"fmt"
+	"net"
+	"runtime"
+)
+
+// peerUID is unimplemented on this platform, so the trust-on-first-use socket
+// migration cannot run here. Configure --socket-owner explicitly, or use
+// --disable-strict-socket. (Windows uses a TCP socket and never reaches this.)
+func peerUID(net.Conn) (int, error) {
+	return 0, fmt.Errorf("peer credential check not supported on %s", runtime.GOOS)
+}