Config: add 'use_quic' getter that respects compile-time flag

src/invidious/config.cr

@@ -126,8 +126,10 @@ class Config
   property host_binding : String = "0.0.0.0"
   # Pool size for HTTP requests to youtube.com and ytimg.com (each domain has a separate pool of `pool_size`)
   property pool_size : Int32 = 100
+
   # Use quic transport for youtube api
-  property use_quic : Bool = false
+  # Note: The getter function is defined below to take into account the compile-time flag
+  setter use_quic : Bool = false
 
   # Saved cookies in "name1=value1; name2=value2..." format
   @[YAML::Field(converter: Preferences::StringToCookies)]
@@ -155,6 +157,16 @@ class Config
     end
   end
 
+  # Return whether QUIC is enabled or not.
+  # Takes into account compile-time flag AND runtime config.
+  def use_quic : Bool
+    {% if flag?(:disable_quic) %}
+      return false
+    {% else %}
+      return @use_quic
+    {% end %}
+  end
+
   def self.load
     # Load config from file or YAML string env var
     env_config_file = "INVIDIOUS_CONFIG_FILE"

src/invidious/routes/images.cr

@@ -3,17 +3,8 @@ module Invidious::Routes::Images
   def self.ggpht(env)
     url = env.request.path.lchop("/ggpht")
 
-    headers = (
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          HTTP::Headers{":authority" => "yt3.ggpht.com"}
-        else
-          HTTP::Headers.new
-        end
-      {% else %}
-        HTTP::Headers.new
-      {% end %}
-    )
+    headers = HTTP::Headers.new
+    headers[":authority"] = "yt3.ggpht.com" if CONFIG.use_quic
 
     REQUEST_HEADERS_WHITELIST.each do |header|
       if env.request.headers[header]?
@@ -42,22 +33,16 @@ module Invidious::Routes::Images
     }
 
     begin
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          YT_POOL.client &.get(url, headers) do |resp|
-            return request_proc.call(resp)
-          end
-        else
-          HTTP::Client.get("https://yt3.ggpht.com#{url}") do |resp|
-            return request_proc.call(resp)
-          end
+      if CONFIG.use_quic
+        YT_POOL.client &.get(url, headers) do |resp|
+          return request_proc.call(resp)
         end
-      {% else %}
+      else
         # This can likely be optimized into a (small) pool sometime in the future.
         HTTP::Client.get("https://yt3.ggpht.com#{url}") do |resp|
           return request_proc.call(resp)
         end
-      {% end %}
+      end
     rescue ex
     end
   end
@@ -77,10 +62,7 @@ module Invidious::Routes::Images
     url = "/sb/#{id}/#{storyboard}/#{index}?#{env.params.query}"
 
     headers = HTTP::Headers.new
-
-    {% unless flag?(:disable_quic) %}
-      headers[":authority"] = "#{authority}.ytimg.com"
-    {% end %}
+    headers[":authority"] = "#{authority}.ytimg.com" if CONFIG.use_quic
 
     REQUEST_HEADERS_WHITELIST.each do |header|
       if env.request.headers[header]?
@@ -107,22 +89,16 @@ module Invidious::Routes::Images
     }
 
     begin
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          YT_POOL.client &.get(url, headers) do |resp|
-            return request_proc.call(resp)
-          end
-        else
-          HTTP::Client.get("https://#{authority}.ytimg.com#{url}") do |resp|
-            return request_proc.call(resp)
-          end
+      if CONFIG.use_quic
+        YT_POOL.client &.get(url, headers) do |resp|
+          return request_proc.call(resp)
         end
-      {% else %}
+      else
         # This can likely be optimized into a (small) pool sometime in the future.
         HTTP::Client.get("https://#{authority}.ytimg.com#{url}") do |resp|
           return request_proc.call(resp)
         end
-      {% end %}
+      end
     rescue ex
     end
   end
@@ -133,17 +109,8 @@ module Invidious::Routes::Images
     name = env.params.url["name"]
     url = env.request.resource
 
-    headers = (
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          HTTP::Headers{":authority" => "i9.ytimg.com"}
-        else
-          HTTP::Headers.new
-        end
-      {% else %}
-        HTTP::Headers.new
-      {% end %}
-    )
+    headers = HTTP::Headers.new
+    headers[":authority"] = "i9.ytimg.com" if CONFIG.use_quic
 
     REQUEST_HEADERS_WHITELIST.each do |header|
       if env.request.headers[header]?
@@ -169,22 +136,16 @@ module Invidious::Routes::Images
     }
 
     begin
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          YT_POOL.client &.get(url, headers) do |resp|
-            return request_proc.call(resp)
-          end
-        else
-          HTTP::Client.get("https://i9.ytimg.com#{url}") do |resp|
-            return request_proc.call(resp)
-          end
+      if CONFIG.use_quic
+        YT_POOL.client &.get(url, headers) do |resp|
+          return request_proc.call(resp)
         end
-      {% else %}
+      else
         # This can likely be optimized into a (small) pool sometime in the future.
         HTTP::Client.get("https://i9.ytimg.com#{url}") do |resp|
           return request_proc.call(resp)
         end
-      {% end %}
+      end
     rescue ex
     end
   end
@@ -223,41 +184,26 @@ module Invidious::Routes::Images
     id = env.params.url["id"]
     name = env.params.url["name"]
 
-    headers = (
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          HTTP::Headers{":authority" => "i.ytimg.com"}
-        else
-          HTTP::Headers.new
-        end
-      {% else %}
-        HTTP::Headers.new
-      {% end %}
-    )
+    headers = HTTP::Headers.new
+    headers[":authority"] = "i.ytimg.com" if CONFIG.use_quic
 
     if name == "maxres.jpg"
       build_thumbnails(id).each do |thumb|
         thumbnail_resource_path = "/vi/#{id}/#{thumb[:url]}.jpg"
+
         # Logic here is short enough that manually typing them out should be fine.
-        {% unless flag?(:disable_quic) %}
-          if CONFIG.use_quic
-            if YT_POOL.client &.head(thumbnail_resource_path, headers).status_code == 200
-              name = thumb[:url] + ".jpg"
-              break
-            end
-          else
-            if HTTP::Client.head("https://i.ytimg.com#{thumbnail_resource_path}").status_code == 200
-              name = thumb[:url] + ".jpg"
-              break
-            end
+        if CONFIG.use_quic
+          if YT_POOL.client &.head(thumbnail_resource_path, headers).status_code == 200
+            name = thumb[:url] + ".jpg"
+            break
           end
-        {% else %}
+        else
           # This can likely be optimized into a (small) pool sometime in the future.
           if HTTP::Client.head("https://i.ytimg.com#{thumbnail_resource_path}").status_code == 200
             name = thumb[:url] + ".jpg"
             break
           end
-        {% end %}
+        end
       end
     end
 
@@ -287,22 +233,16 @@ module Invidious::Routes::Images
     }
 
     begin
-      {% unless flag?(:disable_quic) %}
-        if CONFIG.use_quic
-          YT_POOL.client &.get(url, headers) do |resp|
-            return request_proc.call(resp)
-          end
-        else
-          HTTP::Client.get("https://i.ytimg.com#{url}") do |resp|
-            return request_proc.call(resp)
-          end
+      if CONFIG.use_quic
+        YT_POOL.client &.get(url, headers) do |resp|
+          return request_proc.call(resp)
         end
-      {% else %}
+      else
         # This can likely be optimized into a (small) pool sometime in the future.
         HTTP::Client.get("https://i.ytimg.com#{url}") do |resp|
           return request_proc.call(resp)
         end
-      {% end %}
+      end
     rescue ex
     end
   end

src/invidious/yt_backend/connection_pool.cr

@@ -63,11 +63,7 @@ struct YoutubeConnectionPool
     DB::Pool(HTTPClientType).new(initial_pool_size: 0, max_pool_size: capacity, max_idle_pool_size: capacity, checkout_timeout: timeout) do
       conn = nil # Declare
       {% unless flag?(:disable_quic) %}
-        if use_quic
-          conn = QUIC::Client.new(url)
-        else
-          conn = HTTP::Client.new(url)
-        end
+        conn = CONFIG.use_quic ? QUIC::Client.new(url) : HTTP::Client.new(url)
       {% else %}
         conn = HTTP::Client.new(url)
       {% end %}

src/invidious/yt_backend/youtube_api.cr

@@ -593,7 +593,7 @@ module YoutubeAPI
     LOGGER.trace("YoutubeAPI: POST data: #{data}")
 
     # Send the POST request
-    if {{ !flag?(:disable_quic) }} && CONFIG.use_quic
+    if CONFIG.use_quic
       # Using QUIC client
       body = YT_POOL.client(client_config.proxy_region,
         &.post(url, headers: headers, body: data.to_json)