Merge branch 'pr101' into develop

* pr101:
  (GH-70)  Added validation if URL is SSL capable.

Author: gep13

src/Chocolatey.Language.Server/UriExtensions.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Net;
 
-namespace Chocolatey.Language.Server.Utility
+namespace Chocolatey.Language.Server
 {
     /// <summary>
     ///   Extensions for Uri
@@ -32,5 +32,25 @@ public static bool IsValid(this Uri url)
                 return false;
             }
         }
+
+        /// <summary>
+        ///   Tries to validate if an URL is SSL capable. 
+        ///   HTTP: Will return true if the URL validates with SSL, otherwise false.
+        ///   HTTPS: it returns false
+        /// </summary>
+        /// <param name="url">Uri object</param>
+        public static bool SslCapable(this Uri url)
+        {
+            if (url.Scheme.Equals(Uri.UriSchemeHttps))
+            {
+                return false;
+            }
+
+            var uri = new UriBuilder(url);
+            // Handle http: override the scheme and use the default https port
+            uri.Scheme = Uri.UriSchemeHttps;
+            uri.Port = -1;
+            return uri.Uri.IsValid();     
+        }
     }
 }

src/Chocolatey.Language.Server/Validations/UrlValidValidation.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Chocolatey.Language.Server.Utility;
+using Chocolatey.Language.Server;
 using Microsoft.Language.Xml;
 using OmniSharp.Extensions.LanguageServer.Protocol.Models;
 using DiagnosticSeverity = OmniSharp.Extensions.LanguageServer.Protocol.Models.DiagnosticSeverity;
@@ -34,7 +34,7 @@ public IEnumerable<Diagnostic> Validate(XmlDocumentSyntax syntaxTree, TextPositi
                 if (element != null) {
                     var uriString = element.GetContentValue().Trim();
                     Uri uri;
-                    if(
+                    if (
                         !Uri.IsWellFormedUriString(uriString, UriKind.Absolute) ||
                         !Uri.TryCreate(uriString, UriKind.Absolute, out uri) ||
                         !uri.IsValid()
@@ -47,6 +47,19 @@ public IEnumerable<Diagnostic> Validate(XmlDocumentSyntax syntaxTree, TextPositi
                             Range = range
                         };
                     }
+                    else
+                    {
+                        if (uri.SslCapable())
+                        {
+                            var range = textPositions.GetRange(element.StartTag.End, element.EndTag.Start);
+
+                            yield return new Diagnostic {
+                                Message = "Url in " + elementName + " is SSL capable, please switch to https.",
+                                Severity = DiagnosticSeverity.Warning,
+                                Range = range
+                            };
+                        }
+                    }
                 }
             }
         }