From 8e0d765d1d7ebf3375e9d82b27ffeb486c5be930 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Fri, 13 Feb 2026 18:32:14 +0100
Subject: [PATCH] fix: avoid control-regex lint failure in ws header sanitizer
 (openclaw#15594) thanks @TsekaLuk

---
 src/gateway/server/ws-connection.ts | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/src/gateway/server/ws-connection.ts b/src/gateway/server/ws-connection.ts
index 43bda018023..7ecbefda4ee 100644
--- a/src/gateway/server/ws-connection.ts
+++ b/src/gateway/server/ws-connection.ts
@@ -19,15 +19,29 @@ import { attachGatewayWsMessageHandler } from "./ws-connection/message-handler.j
 type SubsystemLogger = ReturnType<typeof createSubsystemLogger>;
 
 const LOG_HEADER_MAX_LEN = 300;
-const LOG_HEADER_CONTROL_REGEX = /[\u0000-\u001f\u007f-\u009f]/g;
 const LOG_HEADER_FORMAT_REGEX = /\p{Cf}/gu;
 
+function replaceControlChars(value: string): string {
+  let cleaned = "";
+  for (const char of value) {
+    const codePoint = char.codePointAt(0);
+    if (
+      codePoint !== undefined &&
+      (codePoint <= 0x1f || (codePoint >= 0x7f && codePoint <= 0x9f))
+    ) {
+      cleaned += " ";
+      continue;
+    }
+    cleaned += char;
+  }
+  return cleaned;
+}
+
 const sanitizeLogValue = (value: string | undefined): string | undefined => {
   if (!value) {
     return undefined;
   }
-  const cleaned = value
-    .replace(LOG_HEADER_CONTROL_REGEX, " ")
+  const cleaned = replaceControlChars(value)
     .replace(LOG_HEADER_FORMAT_REGEX, " ")
     .replace(/\s+/g, " ")
     .trim();