filters

type Chain []Filter

type Context interface {
	context.Context

	// DownstreamConn retrieves the downstream connection from the given Context.
	DownstreamConn() net.Conn

	// RequestNumber indicates how many requests have been received on the current
	// connection. The RequestNumber for the first request is 1, for the second is 2
	// and so forth.
	RequestNumber() int

	// IncrementRequestNumber increments the request number by 1 and returns a new
	// context.
	IncrementRequestNumber() Context

	// WithCancel mimics the method on context.Context
	WithCancel() (Context, context.CancelFunc)

	// WithDeadline mimics the method on context.Context
	WithDeadline(deadline time.Time) (Context, context.CancelFunc)

	// WithTimeout mimics the method on context.Context
	WithTimeout(timeout time.Duration) (Context, context.CancelFunc)

	// WithMITMing marks this context as being part of an MITM'ed connection.
	WithMITMing() Context

	// IsMITMing indicates whether or the proxy is MITMing the current connection.
	IsMITMing() bool

	// WithValue mimics the method on context.Context
	WithValue(key, val interface{}) Context
}

type Filter interface {
	Apply(ctx Context, req *http.Request, next Next) (*http.Response, Context, error)
}

type FilterFunc func(ctx Context, req *http.Request, next Next) (*http.Response, Context, error)

type Next func(ctx Context, req *http.Request) (*http.Response, Context, error)