* Use std library to convert between different charsets

* Use std library mime parser instead of custom regex to extract charset

* Add example for SOCKS proxy chaining

* Rewrite the code and implement socks5 client to be independent of third party libraries

* refactor the code

* Simplify the example and add customizable socks proxy server

* add missing struct

* changing ConnectHandler

* Update examples/cascadeproxy-socks/socksproxy.go

Co-authored-by: Erik Pellizzon <erikpelli@tutamail.com>

* Replace empty interface with any

* Add configurable KeepAcceptEncoding option

* Add hook to handle proxy connection error

* Pass custom RoundTripper in the context

* Close each entity independently when there is an error

* Move http handler to another file

* Limit response length in error message

* Close non persistent connection after first request

* Fix null problem when the request handler doesn't return it

* Add dependabot configuration

* Update Github Actions pipeline code

* Add linter documentation

* Avoid to run parallel tests

* Fix linting errors

* Use correct go version

* Use verbose flag for tests

* Fix errors

* Fix flaky test

* Avoid to overwrite default client in tests

* Close the connection used for https

* need Closing Read and Write

---------

Co-authored-by: YushiIso <iso@datasection.co.jp>

* Update curl minus p test

* Refactor writeConnect helper function

* Add mitm mutate request test

* Add http proxy from env variables test

* Add accept encoding test

* Fix linter issues