This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
The core.network/external/nsProxyAutoConfig.js script's proxyAlert, myIpAddress, dnsResolve functions are always throw exceptions. We patched ProxyAutoConfig file to inject a callback and handle these call under Java side not in the script, but I think it is not the best solution.