fix content-type not set regression on main proxy handler

handlers/outline.go

@@ -20,6 +20,7 @@ func NewOutlineHandler(path string, opts *ProxyOptions) fiber.Handler {
 				rx.SpoofReferrerFromGoogleSearch(),
 			).
 			AddResponseModifications(
+				tx.ForwardResponseHeaders(),
 				tx.DeleteIncomingCookies(),
 				tx.RewriteHTMLResourceURLs(),
 				tx.GenerateReadableOutline(), // <-- this response modification does the outline rendering

handlers/proxy.go

@@ -43,7 +43,7 @@ func NewProxySiteHandler(opts *ProxyOptions) fiber.Handler {
 				//rx.RequestArchiveIs(),
 			).
 			AddResponseModifications(
-				//tx.ForwardResponseHeaders(),
+				tx.ForwardResponseHeaders(),
 				//tx.BlockThirdPartyScripts(),
 				tx.DeleteIncomingCookies(),
 				tx.DeleteLocalStorageData(),
@@ -53,11 +53,16 @@ func NewProxySiteHandler(opts *ProxyOptions) fiber.Handler {
 				tx.RewriteHTMLResourceURLs(),
 				tx.PatchDynamicResourceURLs(),
 				tx.PatchTrackerScripts(),
-				//tx.BlockElementRemoval(".article-content"), // techcrunch
+				tx.BlockElementRemoval(".article-content"), // techcrunch
-				tx.BlockElementRemoval(".available-content"), // substack
+				//tx.BlockElementRemoval(".available-content"), // substack
 			// tx.SetContentSecurityPolicy("default-src * 'unsafe-inline' 'unsafe-eval' data: blob:;"),
 			)
 
+		// no options passed in, return early
+		if opts == nil {
+			return proxychain.Execute()
+		}
+
 		// load ruleset
 		rule, exists := opts.Ruleset.GetRule(proxychain.Request.URL)
 		if exists {

handlers/ruleset.go

@@ -29,7 +29,6 @@ func NewRulesetSiteHandler(opts *ProxyOptions) fiber.Handler {
 				return c.Send([]byte(jsn))
 
 			default:
-				// TODO: the ruleset.MarshalYAML() method is currently broken and panics
 				yml, err := opts.Ruleset.YAML()
 				if err != nil {
 					return err

proxychain/proxychain.go

@@ -525,12 +525,14 @@ func (chain *ProxyChain) Execute() error {
 		return errors.New("no context set")
 	}
 
+	// TODO: this seems broken
 	// in case api user did not set or forward content-type, we do it for them
-	ct := chain.Context.Response().Header.Peek("content-type")
+	/*
-	CT := chain.Context.Response().Header.Peek("Content-Type")
+		ct := string(chain.Context.Response().Header.Peek("content-type"))
-	if ct == nil && CT == nil {
+		if ct == "" {
 			chain.Context.Set("content-type", chain.Response.Header.Get("content-type"))
 		}
+	*/
 
 	// Return request back to client
 	return chain.Context.SendStream(body)