Use HTTPs for update check and other URLs.

ICSharpCode.Decompiler/ICSharpCode.Decompiler.nuspec.template

@@ -6,9 +6,9 @@
     <title>ILSpy Decompiler Engine</title>
     <authors>Daniel Grunwald, David Srbecky, Ed Harvey, Siegfried Pammer</authors>
     <owners>Daniel Grunwald, SharpDevelop</owners>
-    <licenseUrl>http://www.opensource.org/licenses/mit-license.php</licenseUrl>
+    <licenseUrl>https://opensource.org/licenses/mit-license.php</licenseUrl>
     <projectUrl>https://github.com/icsharpcode/ILSpy/</projectUrl>
-    <iconUrl>http://ilspy.net/images/icon32.png</iconUrl>
+    <iconUrl>https://ilspy.net/images/icon32.png</iconUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>ICSharpCode.Decompiler is the decompiler engine used in ILSpy.</description>
     <!--<releaseNotes></releaseNotes>-->

ILSpy.AddIn/source.extension.vsixmanifest.template

@@ -4,7 +4,7 @@
     <Identity Id="a9120dbe-164a-4891-842f-fb7829273838" Version="$INSERTVERSION$" Language="en-US" Publisher="ic#code" />
     <DisplayName>ILSpy</DisplayName>
     <Description xml:space="preserve">Integrates the ILSpy decompiler into Visual Studio.</Description>
-    <MoreInfo>http://www.ilspy.net</MoreInfo>
+    <MoreInfo>https://ilspy.net</MoreInfo>
     <License>license.txt</License>
     <Icon>ILSpy-Large.ico</Icon>
   </Metadata>

ILSpy/AboutPage.cs

@@ -49,7 +49,7 @@ namespace ICSharpCode.ILSpy
 			Display(decompilerTextView);
 		}
 		
-		static readonly Uri UpdateUrl = new Uri("http://www.ilspy.net/updates.xml");
+		static readonly Uri UpdateUrl = new Uri("https://ilspy.net/updates.xml");
 		const string band = "stable";
 		
 		static AvailableVersionInfo latestAvailableVersion;

ILSpy/README.txt

@@ -1,5 +1,5 @@
 ILSpy is the open-source .NET assembly browser and decompiler.
-Website: http://www.ilspy.net/
+Website: https://ilspy.net/
 Found a bug?: https://github.com/icsharpcode/ILSpy/issues/new
 
 Copyright 2011-2017 AlphaSierraPapa for the SharpDevelop team