GetTCPProxy returns the tcp proxy.

MaybeStartProxy maybe starts an inner http/tcp proxies.

MaybeStopProxy stops the http/tcp proxies if it has been started before.

NewHTTPProxy creates and initializes a new http proxy.

NewTCPProxy starts a 1to1 TCP proxy.

HTTPProxy stands for a http proxy based on SSH connection.

TCPProxy represents a simple TCP proxy unlike HTTP proxies, TCP proxies are point-to-point.