fix: distill telegram fetch-failed retry rules

CHANGELOG.md

@@ -62,6 +62,7 @@ Docs: https://docs.openclaw.ai
 - Plugins/CLI: make `openclaw plugins enable` and plugin install/link flows update allowlists via shared plugin-enable policy so enabled plugins are not left disabled by allowlist mismatch. (#23190) Thanks @downwind7clawd-ctrl.
 - Memory/QMD: add optional `memory.qmd.mcporter` search routing so QMD `query/search/vsearch` can run through mcporter keep-alive flows (including multi-collection paths) to reduce cold starts, while keeping searches on agent-scoped QMD state for consistent recall. (#19617) Thanks @nicole-luxe and @vignesh07.
 - Chat/UI: strip inline reply/audio directive tags (`[[reply_to_current]]`, `[[reply_to:<id>]]`, `[[audio_as_voice]]`) from displayed chat history, live chat event output, and session preview snippets so control tags no longer leak into user-visible surfaces.
+- Telegram/Retry: classify undici `TypeError: fetch failed` as recoverable in both polling and send retry paths so transient fetch failures no longer fail fast. (#16699) thanks @Glucksberg.
 - BlueBubbles/DM history: restore DM backfill context with account-scoped rolling history, bounded backfill retries, and safer history payload limits. (#20302) Thanks @Ryan-Haines.
 - BlueBubbles/Webhooks: accept inbound/reaction webhook payloads when BlueBubbles omits `handle` but provides DM `chatGuid`, and harden payload extraction for array/string-wrapped message bodies so valid webhook events no longer get rejected as unparseable. (#23275) Thanks @toph31.
 - Security/Audit: add `openclaw security audit` finding `gateway.nodes.allow_commands_dangerous` for risky `gateway.nodes.allowCommands` overrides, with severity upgraded to critical on remote gateway exposure.

src/telegram/network-errors.test.ts

@@ -40,9 +40,13 @@ describe("isRecoverableTelegramNetworkError", () => {
   });
 
   it("skips broad message matches for send context", () => {
-    const err = new Error("Network request for 'sendMessage' failed!");
-    expect(isRecoverableTelegramNetworkError(err, { context: "send" })).toBe(false);
-    expect(isRecoverableTelegramNetworkError(err, { context: "polling" })).toBe(true);
+    const networkRequestErr = new Error("Network request for 'sendMessage' failed!");
+    expect(isRecoverableTelegramNetworkError(networkRequestErr, { context: "send" })).toBe(false);
+    expect(isRecoverableTelegramNetworkError(networkRequestErr, { context: "polling" })).toBe(true);
+
+    const undiciSnippetErr = new Error("Undici: socket failure");
+    expect(isRecoverableTelegramNetworkError(undiciSnippetErr, { context: "send" })).toBe(false);
+    expect(isRecoverableTelegramNetworkError(undiciSnippetErr, { context: "polling" })).toBe(true);
   });
 
   it("returns false for unrelated errors", () => {

src/telegram/network-errors.ts

@@ -27,9 +27,9 @@ const RECOVERABLE_ERROR_NAMES = new Set([
   "BodyTimeoutError",
 ]);
 
+const ALWAYS_RECOVERABLE_MESSAGES = new Set(["fetch failed", "typeerror: fetch failed"]);
+
 const RECOVERABLE_MESSAGE_SNIPPETS = [
-  "fetch failed",
-  "typeerror: fetch failed",
   "undici",
   "network error",
   "network request",
@@ -40,13 +40,6 @@ const RECOVERABLE_MESSAGE_SNIPPETS = [
   "timed out", // grammY getUpdates returns "timed out after X seconds" (not matched by "timeout")
 ];
 
-// Undici surface errors as TypeError("fetch failed") with optional nested causes.
-// Treat this exact shape as recoverable even when broad message matching is disabled.
-function isUndiciFetchFailedError(err: unknown): boolean {
-  const message = formatErrorMessage(err).trim().toLowerCase();
-  return message === "fetch failed" || message === "typeerror: fetch failed";
-}
-
 function normalizeCode(code?: string): string {
   return code?.trim().toUpperCase() ?? "";
 }
@@ -135,10 +128,6 @@ export function isRecoverableTelegramNetworkError(
       : options.context !== "send";
 
   for (const candidate of collectErrorCandidates(err)) {
-    if (isUndiciFetchFailedError(candidate)) {
-      return true;
-    }
-
     const code = normalizeCode(getErrorCode(candidate));
     if (code && RECOVERABLE_ERROR_CODES.has(code)) {
       return true;
@@ -149,9 +138,12 @@ export function isRecoverableTelegramNetworkError(
       return true;
     }
 
-    if (allowMessageMatch) {
-      const message = formatErrorMessage(candidate).toLowerCase();
-      if (message && RECOVERABLE_MESSAGE_SNIPPETS.some((snippet) => message.includes(snippet))) {
+    const message = formatErrorMessage(candidate).trim().toLowerCase();
+    if (message && ALWAYS_RECOVERABLE_MESSAGES.has(message)) {
+      return true;
+    }
+    if (allowMessageMatch && message) {
+      if (RECOVERABLE_MESSAGE_SNIPPETS.some((snippet) => message.includes(snippet))) {
         return true;
       }
     }