Update

vendor/tailscale.com/client/local/serve.go

@@ -0,0 +1,55 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !ts_omit_serve
+
+package local
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"tailscale.com/ipn"
+)
+
+// GetServeConfig return the current serve config.
+//
+// If the serve config is empty, it returns (nil, nil).
+func (lc *Client) GetServeConfig(ctx context.Context) (*ipn.ServeConfig, error) {
+	body, h, err := lc.sendWithHeaders(ctx, "GET", "/localapi/v0/serve-config", 200, nil, nil)
+	if err != nil {
+		return nil, fmt.Errorf("getting serve config: %w", err)
+	}
+	sc, err := getServeConfigFromJSON(body)
+	if err != nil {
+		return nil, err
+	}
+	if sc == nil {
+		sc = new(ipn.ServeConfig)
+	}
+	sc.ETag = h.Get("Etag")
+	return sc, nil
+}
+
+func getServeConfigFromJSON(body []byte) (sc *ipn.ServeConfig, err error) {
+	if err := json.Unmarshal(body, &sc); err != nil {
+		return nil, err
+	}
+	return sc, nil
+}
+
+// SetServeConfig sets or replaces the serving settings.
+// If config is nil, settings are cleared and serving is disabled.
+func (lc *Client) SetServeConfig(ctx context.Context, config *ipn.ServeConfig) error {
+	h := make(http.Header)
+	if config != nil {
+		h.Set("If-Match", config.ETag)
+	}
+	_, _, err := lc.sendWithHeaders(ctx, "POST", "/localapi/v0/serve-config", 200, jsonBody(config), h)
+	if err != nil {
+		return fmt.Errorf("sending serve config: %w", err)
+	}
+	return nil
+}