when users pass a Cookie header as option and plugin is enabled, the header will be parsed and managed by the jar

lib/httpx/plugins/cookies.rb

@@ -75,6 +75,21 @@ module HTTPX
           add("cookie", header_value)
         end
       end
+
+      module OptionsMethods
+        def initialize(*)
+          super
+
+          return unless @headers.key?("cookie")
+
+          @headers.delete("cookie").each do |ck|
+            ck.split(/ *; */).each do |cookie|
+              name, value = cookie.split("=", 2)
+              @cookies.add(Cookie.new(name, value))
+            end
+          end
+        end
+      end
     end
     register_plugin :cookies, Cookies
   end

sig/headers.rbs

@@ -12,7 +12,7 @@ module HTTPX
     def []=: (headers_key field, headers_value value) -> void
 
     def add: (headers_key field, string value) -> void
-    def delete: (headers_key field) -> void
+    def delete: (headers_key field) -> Array[String]?
 
     def each: (?_Each[[headers_key, String]]? extra_headers) { (headers_key, String) -> void } -> void
             | (?_Each[[headers_key, String]]? extra_headers) -> Enumerable[[headers_key, String]]
@@ -28,7 +28,7 @@ module HTTPX
     def to_hash: () -> Hash[headers_key, String]
     alias to_h to_hash
 
-    def inspect: () -> String 
+    def inspect: () -> String
 
     private