echo

func Middleware ¶

func Middleware(
	mppServer *server.Mpp,
	charge server.ChargeFunc,
) echo.MiddlewareFunc

Middleware returns an Echo middleware function that enforces MPP payment.

charge determines the payment requirements per request. Use server.StaticCharge for fixed pricing or supply a closure for dynamic pricing.

func ReceiptFromContext ¶

func ReceiptFromContext(c echo.Context) *protocol.Receipt

ReceiptFromContext returns the payment Receipt stored in the Echo context by the middleware, or nil when no payment was made.