[FIX] website_forum: valid url at submit.

Older regexp was not working, event with the sample: https://www.odoo.com
Should be shared in util.js

addons/website_forum/static/src/js/website_forum.js

@@ -235,7 +235,45 @@ if(!$('.website_forum').length) {
         if (url.search("^http(s?)://.*")) {
             url = 'http://'+url;
         }
-        var regex = new RegExp("(http(s)?://.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)");
+
+        // https://gist.github.com/dperini/729294
+        var regex = new RegExp(
+          "^" +
+            // protocol identifier
+            "(?:(?:https?|ftp)://)" +
+            // user:pass authentication
+            "(?:\\S+(?::\\S*)?@)?" +
+            "(?:" +
+              // IP address exclusion
+              // private & local networks
+              "(?!(?:10|127)(?:\\.\\d{1,3}){3})" +
+              "(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" +
+              "(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})" +
+              // IP address dotted notation octets
+              // excludes loopback network 0.0.0.0
+              // excludes reserved space >= 224.0.0.0
+              // excludes network & broacast addresses
+              // (first & last IP address of each class)
+              "(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" +
+              "(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" +
+              "(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" +
+            "|" +
+              // host name
+              "(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)" +
+              // domain name
+              "(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*" +
+              // TLD identifier
+              "(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))" +
+              // TLD may end with dot
+              "\\.?" +
+            ")" +
+            // port number
+            "(?::\\d{2,5})?" +
+            // resource path
+            "(?:[/?#]\\S*)?" +
+          "$", "i"
+        );
+
         if(regex.test(url)){
             ajax.jsonRpc("/forum/get_url_title", 'call', {'url': url}).then(function (data) {
                 if (data) {