dns - xn-- on domain, what it means? - Stack Overflow This is Punycode which is used to Internationalize Domain Names in Applications From 1: Punycode is intended for the encoding of labels in the Internationalized Domain Names in Applications (IDNA) framework, such that these domain names may be represented in the ASCII character set allowed in the Domain Name System of the Internet
What are the 153 top level domains starting with XN? I was inspecting the full list of IANA top level domains and came across some uncommon ones, but also some very uncommon ones, particularly 153 top level domains starting with XN: XN--11B4C3D XN--1CK2E1B XN--1QQW23A XN--2SCRJ9C XN--30RR7Y XN--3BST00M
Is there any way to avoid showing xn-- for IDN domains? It is possible to register domains such as "xn–pple-43d com", which is equivalent to "аpple com" It may not be obvious at first glance, but "аpple com" uses the Cyrillic "а" (U+0430) rather than the ASCII "a" (U+0061) This is known as a homograph attack Fortunately modern browsers have mechanisms in place to limit IDN homograph attacks
Why how does the browser decide ☃. net goes to xn--n3h. net Yes, xn--is an ASCII Compatible Encoding (ACE) prefix to let the DNS system know that the rest of the label is punycode-encoded In your example, n3h is the Punycode-encoded form of ☃ – Remy Lebeau
URL encoding the space character: + or %20? - Stack Overflow From Wikipedia (emphasis and link added): When data that has been entered into HTML forms is submitted, the form field names and values are encoded and sent to the server in an HTTP request message using method GET or POST, or, historically, via email
Unicode characters xn--ls8h - Stack Overflow xn--is the prefix used in the ASCII representation of an Internationalized Domain Name, and ls8h is the Punycode representation of the character In Python, Punycode is one of the standard character encodings: >>> b'ls8h' decode('punycode') '\U0001f4a9'
curl command - could not resolve xn--x-5gn post on Ubuntu I am using curl command to call rest api I want to post data and my curl command looks like: curl –x POST -u 'username:PW' -k -H "Content-Type:application json" -d '{"json-input":{"handler":"getC
minimize f (x1,x2,. . xn) with x1+x2+. . . +xn=C - Stack Overflow I would say: start with scipy minimize first Then: Numerical Optimization (Nocedal) for a very general overview and every paper slides from Mark Schmidt who did a lot in regards to projected quasi-newton methods including a lot of nice to read high-quality open-source code (matlab!; at least most parts are nice to read)