fix(client): watch only rule paths, forget vanished worktrees, ping http2

backend/internal/client/client.go

@@ -21,9 +21,14 @@ import (
 	"lodge/internal/protocol"
 )
 
-const requestTimeout = 15 * time.Second
+const (
+	requestTimeout = 15 * time.Second
+	sendPingAfter  = 15 * time.Second
+	pingTimeout    = 10 * time.Second
+)
 
 var (
+	httpClient     = &http.Client{Transport: newTransport()}
 	ErrNotLoggedIn = errors.New("not logged in: run the install command from the lodge admin page")
 	errConflict    = errors.New("server state changed")
 )
@@ -89,13 +94,19 @@ func writeFile(path string, data []byte, mode os.FileMode) error {
 	return os.Rename(temp, path)
 }
 
+func newTransport() *http.Transport {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.HTTP2 = &http.HTTP2Config{SendPingTimeout: sendPingAfter, PingTimeout: pingTimeout}
+	return transport
+}
+
 func (c *Client) request(ctx context.Context, method, path string, body []byte) (*http.Response, error) {
 	req, err := http.NewRequestWithContext(ctx, method, c.URL+path, bytes.NewReader(body))
 	if err != nil {
 		return nil, err
 	}
 	req.Header.Set("Authorization", "Bearer "+c.Token)
-	res, err := http.DefaultClient.Do(req)
+	res, err := httpClient.Do(req)
 	if err != nil {
 		return nil, err
 	}