If you get this error with Firebase Cloud Functions, this is due to the limitations of the free tier (outbound networking only allowed to Google services). Upgrade to the Flame or Blaze plans for it to work.
Most answers given here are false. It is perfectly legal to have an underscore in a domain name. Let me quote the standard, RFC 2181, section 11, “Name syntax”: The DNS itself places only one restriction on the particular labels that can be used to identify resource records. That one restriction relates to the length … Read more
The hint (using axfr) only works if the NS you’re querying (ns1.foo.example in your example) is configured to allow AXFR requests from the IP you’re using; this is unlikely, unless your IP is configured as a secondary for the domain in question. Basically, there’s no easy way to do it if you’re not allowed to … Read more
Acrylic DNS Proxy (free, open source) does the job. It creates a proxy DNS server (on your own computer) with its own hosts file. The hosts file accepts wildcards. Download from the offical website http://mayakron.altervista.org/support/browse.php?path=Acrylic&name=Home Configuring Acrylic DNS Proxy To configure Acrylic DNS Proxy, install it from the above link then go to: Start Programs … Read more
You’ll want the SOA (Start of Authority) record for a given domain name, and this is how you accomplish it using the universally available nslookup command line tool: command line> nslookup > set querytype=soa > stackoverflow.com Server: 217.30.180.230 Address: 217.30.180.230#53 Non-authoritative answer: stackoverflow.com origin = ns51.domaincontrol.com # (“primary name server” on Windows) mail addr = … Read more
const full = location.protocol + ‘//’ + location.host;
According to this answer, it is possible, but rarely used. As for how to get it: I would tend to simply try and order one with the provider of your choice, and enter the IP address instead of a domain during the ordering process. However, running a site on an IP address to avoid the … Read more
You can use the following regular expressions separately or by combining them in a joint OR expression. ValidIpAddressRegex = “^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$”; ValidHostnameRegex = “^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$”; ValidIpAddressRegex matches valid IP addresses and ValidHostnameRegex valid host names. Depending on the language you use \ could have to be escaped with \. ValidHostnameRegex is valid as per RFC 1123. Originally, … Read more
Although there is the RFC 2965 (Set-Cookie2, had already obsoleted RFC 2109) that should define the cookie nowadays, most browsers don’t fully support that but just comply to the original specification by Netscape. There is a distinction between the Domain attribute value and the effective domain: the former is taken from the Set-Cookie header field … Read more
1/23/19 UPDATE: Things have changed quite a bit (for the better) since my last answer. This updated answer will show you how to configure: Root apex (example.com) Sub-domain (www.example.com) HTTPS (optional but strongly encouraged) In the end, all requests to example.com will be re-directed to https://www.example.com (or http:// if you choose NOT to use HTTPS). … Read more