Media download fails when Telegram proxy is configured (SSRF guard overrides proxy dispatcher)
증상
When a Telegram proxy is configured via channels.telegram.proxy, media downloads (voice messages, images, files) fail with:
원인
Telegram Bot API conflict, rate limit, or webhook/polling configuration error causing message delivery failure.
해결법
Adding pinDns: fetchImpl ? false : undefined to the fetchWithSsrFGuard call in fetchRemoteMedia() fixes the issue by skipping DNS pinning when a custom fetch implementation (proxy) is provided:
const result = await fetchWithSsrFGuard(withStrictGuardedFetchMode({
url,
fetchImpl,
init: requestInit,
maxRedirects,
policy: ssrfPolicy,
lookupFn,
pinDns: fetchImpl ? false : undefined // skip DNS pinning when proxy is active
}));
This preserves SSRF protection for non-proxy scenarios while allowing the proxy dispatcher to handle media downloads correctly.
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/openclaw/openclaw/issues/45467
Source: https://github.com/openclaw/openclaw/issues/45467
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