Don't reject already accepted subscriptions.

lib/pleroma/web/websub/websub.ex

@@ -31,9 +31,9 @@ def verify(subscription, getter \\ &@httpoison.get/3) do
     do
       changeset = Changeset.change(subscription, %{state: "active"})
       Repo.update(changeset)
-    else _e ->
-      changeset = Changeset.change(subscription, %{state: "rejected"})
-      {:ok, subscription} = Repo.update(changeset)
+    else e ->
+      Logger.debug("Couldn't verify subscription")
+      Logger.debug(inspect(e))
       {:error, subscription}
     end
   end

test/web/websub/websub_test.exs

@@ -46,7 +46,8 @@ test "a verification of a request that doesn't return 200" do
     end
 
     {:error, sub} = Websub.verify(sub, getter)
-    assert sub.state == "rejected"
+    # Keep the current state.
+    assert sub.state == "requested"
   end
 
   test "an incoming subscription request" do