What causes "test %s fail" in XX-net/XX-Net?

Expected for blocked URLs in censored networks — check whether at least one URL succeeds

test %s fail

Error message

test %s fail

What it means

Logged only when running check_local_network.py as a script (__name__ == '__main__'): a test URL from self.urls failed _test_host and the loop sleeps 1s before trying the next URL. It marks individual URL failures during connectivity testing.

Source

Thrown at code/default/gae_proxy/local/check_local_network.py:136

                xlog.exception("test %s e:%r", url, e)

        return False

    def _simple_check_worker(self):
        time_now = time.time()

        self._checking_lock.acquire()
        self._checking_num += 1
        self._checking_lock.release()

        network_ok = False
        for url in self.urls:
            if self._test_host(url):
                network_ok = True
                break
            else:
                if __name__ == "__main__":
                    xlog.warn("test %s fail", url)
                time.sleep(1)

        if network_ok:
            self.last_check_time = time.time()
            self.report_ok()
            xlog.debug("network %s is ok, cost:%d ms", self.type, 1000 * (time.time() - time_now))
        else:
            xlog.warn("network %s fail", self.type)
            self.network_stat = "Fail"
            self.last_check_time = time.time()

        self._checking_lock.acquire()
        self._checking_num -= 1
        self._checking_lock.release()

    def triger_check_network(self, fail=False, force=False):
        time_now = time.time()
        if not force:

View on GitHub (pinned to cfa5bc17b6)

Solutions

Expected for blocked URLs in censored networks — check whether at least one URL succeeds
Verify basic internet works (ping/curl an allowed site)
Add or configure fallback test URLs appropriate to your network
Run with the module's main to see per-URL results, then fix DNS/proxy issues

Defensive patterns

Strategy: retry

Prevention

Configure multiple test URLs so one block doesn't fail the check
Use this module standalone to diagnose which URLs are reachable

When it happens

Trigger: Running the module directly while the tested host(s) are unreachable: blocked domains, no internet, or DNS failure for that specific URL.

Common situations: Testing connectivity of Google/firewall-probe URLs on a network where some are blocked by design; debugging network status detection standalone.

Related errors

AI-assisted analysis of XX-net/XX-Net@cfa5bc17b6 (2026-08-27). Data as JSON: /api/errors/2962df0d1d5bfe79. Report an issue: GitHub.