add raw handler support

proxychain/responsemodifiers/modify_response_header.go

@@ -6,16 +6,16 @@ import (
 
 // SetResponseHeader modifies response headers from the upstream server
 func SetResponseHeader(key string, value string) proxychain.ResponseModification {
-	return func(px *proxychain.ProxyChain) error {
-		px.Context.Response().Header.Set(key, value)
+	return func(chain *proxychain.ProxyChain) error {
+		chain.Context.Set(key, value)
 		return nil
 	}
 }
 
 // DeleteResponseHeader removes response headers from the upstream server
 func DeleteResponseHeader(key string) proxychain.ResponseModification {
-	return func(px *proxychain.ProxyChain) error {
-		px.Context.Response().Header.Del(key)
+	return func(chain *proxychain.ProxyChain) error {
+		chain.Context.Response().Header.Del(key)
 		return nil
 	}
 }