add more og tags, and also return 405 for HEAD requests

Author: tayloraswift

Sources/HTTPServer/HTTP.ServerLoop.swift

@@ -311,23 +311,26 @@ extension HTTP.ServerLoop
     {
         cop.reset()
 
-        guard
-        case .GET = h1.method
-        else
+        switch h1.method
         {
-            return .resource("Method requires HTTP/2", status: 505)
-        }
+        case .HEAD:
+            return .resource("Method not allowed", status: 405)
 
-        if  let request:IntegralRequest = .init(get: h1.uri,
-                headers: h1.headers,
-                address: address,
-                service: service)
-        {
-            return try await cop.pause { try await self.response(for: request) }
-        }
-        else
-        {
-            return .resource("Malformed request", status: 400)
+        case .GET:
+            if  let request:IntegralRequest = .init(get: h1.uri,
+                    headers: h1.headers,
+                    address: address,
+                    service: service)
+            {
+                return try await cop.pause { try await self.response(for: request) }
+            }
+            else
+            {
+                return .resource("Malformed request", status: 400)
+            }
+
+        default:
+            return .resource("Method requires HTTP/2", status: 505)
         }
     }
 }
@@ -456,6 +459,9 @@ extension HTTP.ServerLoop
 
         switch method
         {
+        case "HEAD":
+            return .resource("Method not allowed", status: 405)
+
         case "GET":
             if  let request:IntegralRequest = .init(get: path,
                     headers: headers,

Sources/SwiftinitRender/Pages/Swiftinit.RenderablePage.swift

@@ -83,6 +83,11 @@ extension Swiftinit.RenderablePage
                         $0.href = "https://swiftinit.org\(canonical)"
                         $0.rel = .canonical
                     }
+                    $0[.meta]
+                    {
+                        $0.property = .og_url
+                        $0.content = "https://swiftinit.org\(canonical)"
+                    }
                 }
                 //  Inlining this saves the client a round-trip to the google fonts API.
                 //  It is only about 1.87 KB, which is less than 5 percent of the total
@@ -117,6 +122,8 @@ extension Swiftinit.RenderablePage
 
                 $0[.meta] { $0.property = .og_title ; $0.content = self.title }
                 $0[.meta] { $0.property = .og_image ; $0.content = favicon }
+                $0[.meta] { $0.property = .og_type ; $0.content = "website" }
+                $0[.meta] { $0.property = .og_site_name ; $0.content = "Swiftinit" }
 
                 self.head(augmenting: &$0, format: format)
             }