Which communication protocols can be used with Pupy's transports?

Pupy supports a wide range of communication protocols including `obfs3`, `http`, `ssl`, `ecm`, `tcp_cleartext`, `dfws`, `rsa`, `udp_secure`, `kc4`, `ec4`, `ws`, `scramblesuit`, `udp_cleartext`, and `ssl_rsa`. These can be customized in the transport configuration files located at `pupy/pupy/network/transports/conf.py`. The variety of protocols allows operators to blend traffic with normal HTTP, SSL, or obfuscated streams to evade detection, similar to techniques seen in Application Techniques of Troubleshooting Platform in Penetration Testing.