echo/website/content/guide/error-handling.md

title	menu
Error Handling	side parent weight guide 8

Echo advocates centralized HTTP error handling by returning error from middleware and handlers.

It allows you to:

• Debug by writing stack trace to the HTTP response.
• Customize HTTP responses.
• Recover from panics inside middleware or handlers.

For example, when basic auth middleware finds invalid credentials it returns 401 - Unauthorized error, aborting the current HTTP request.

package main

import (
	"net/http"

	"github.com/labstack/echo"
)

func main() {
	e := echo.New()
	e.Use(func(c echo.Context) error {
		// Extract the credentials from HTTP request header and perform a security
		// check

		// For invalid credentials
		return echo.NewHTTPError(http.StatusUnauthorized)
	})
	e.Get("/welcome", welcome)
	e.Run(":1323")
}

func welcome(c echo.Context) error {
	return c.String(http.StatusOK, "Welcome!")
}

See how HTTPErrorHandler handles it.