httptunnel

type ConnectionOptions struct {
	OverrideGetUrl    func(string) (*url.URL, error)
	PrepareRequest    func(r *http.Request) error
	OverrideNewReader func(net.Conn) (*bufio.Reader, error)
}

type Dialer struct {
	// NetDial specifies the dial function for creating TCP connections. If
	// NetDial is nil, net.Dialer DialContext is used.
	NetDial func(network, addr string) (net.Conn, error)

	// NetDialContext specifies the dial function for creating TCP connections. If
	// NetDialContext is nil, NetDial is used.
	NetDialContext func(ctx context.Context, network, addr string) (net.Conn, error)

	// NetDialTLSContext specifies the dial function for creating TLS/TCP connections. If
	// NetDialTLSContext is nil, NetDialContext is used.
	// If NetDialTLSContext is set, Dial assumes the TLS handshake is done there and
	// TLSClientConfig is ignored.
	NetDialTLSContext func(ctx context.Context, network, addr string) (net.Conn, error)

	// Proxy specifies a function to return a proxy for a given
	// Request. If the function returns a non-nil error, the
	// request is aborted with the provided error.
	// If Proxy is nil or returns a nil *URL, no proxy is used.
	Proxy func(*http.Request) (*url.URL, error)

	// TLSClientConfig specifies the TLS configuration to use with tls.Client.
	// If nil, the default configuration is used.
	// If either NetDialTLS or NetDialTLSContext are set, Dial assumes the TLS handshake
	// is done there and TLSClientConfig is ignored.
	TLSClientConfig *tls.Config

	// HandshakeTimeout specifies the duration for the handshake to complete.
	HandshakeTimeout time.Duration

	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
	// size is zero, then a useful default size is used. The I/O buffer sizes
	// do not limit the size of the messages that can be sent or received.
	ReadBufferSize, WriteBufferSize int

	// Jar specifies the cookie jar.
	// If Jar is nil, cookies are not sent in requests and ignored
	// in responses.
	Jar http.CookieJar
}

type Hijacker struct {
	// Customize handling of http request
	// Useful if you want to embed some reusable validation into the hijacker
	OverrideHandleRequest func(*http.Request) error
	// Customize how origin is checked.
	// Default behavior is to ignore origin if the header is unset, otherwise
	// check that host matches between header and url
	OverrideCheckOrigin func(*http.Request) error
}