echo server that returns different http status codes

faildiffererntly.go

package main

import (
	"github.com/labstack/echo"
	"net/http"
)

func main() {
	e := echo.New()
	e.Use(FailDifferently)
	e.Logger.Fatal(e.Start(":8080"))
	return
}

func FailDifferently(next echo.HandlerFunc) echo.HandlerFunc {
	return func(c echo.Context) error {
		if c.Path() == "/100" {return echo.NewHTTPError(http.StatusContinue)}
		if c.Path() == "/101" {return echo.NewHTTPError(http.StatusSwitchingProtocols)}
		if c.Path() == "/102" {return echo.NewHTTPError(http.StatusProcessing)}
		if c.Path() == "/103" {return echo.NewHTTPError(http.StatusEarlyHints)}
		if c.Path() == "/200" {return echo.NewHTTPError(http.StatusOK)}
		if c.Path() == "/201" {return echo.NewHTTPError(http.StatusCreated)}
		if c.Path() == "/202" {return echo.NewHTTPError(http.StatusAccepted)}
		if c.Path() == "/203" {return echo.NewHTTPError(http.StatusNonAuthoritativeInfo)}
		if c.Path() == "/204" {return echo.NewHTTPError(http.StatusNoContent)}
		if c.Path() == "/205" {return echo.NewHTTPError(http.StatusResetContent)}
		if c.Path() == "/206" {return echo.NewHTTPError(http.StatusPartialContent)}
		if c.Path() == "/207" {return echo.NewHTTPError(http.StatusMultiStatus)}
		if c.Path() == "/208" {return echo.NewHTTPError(http.StatusAlreadyReported)}
		if c.Path() == "/226" {return echo.NewHTTPError(http.StatusIMUsed)}
		if c.Path() == "/300" {return echo.NewHTTPError(http.StatusMultipleChoices)}
		if c.Path() == "/301" {return echo.NewHTTPError(http.StatusMovedPermanently)}
		if c.Path() == "/302" {return echo.NewHTTPError(http.StatusFound)}
		if c.Path() == "/303" {return echo.NewHTTPError(http.StatusSeeOther)}
		if c.Path() == "/304" {return echo.NewHTTPError(http.StatusNotModified)}
		if c.Path() == "/305" {return echo.NewHTTPError(http.StatusUseProxy)}
		if c.Path() == "/307" {return echo.NewHTTPError(http.StatusTemporaryRedirect)}
		if c.Path() == "/308" {return echo.NewHTTPError(http.StatusPermanentRedirect)}
		if c.Path() == "/400" {return echo.NewHTTPError(http.StatusBadRequest)}
		if c.Path() == "/401" {return echo.NewHTTPError(http.StatusUnauthorized)}
		if c.Path() == "/402" {return echo.NewHTTPError(http.StatusPaymentRequired)}
		if c.Path() == "/403" {return echo.NewHTTPError(http.StatusForbidden)}
		if c.Path() == "/404" {return echo.NewHTTPError(http.StatusNotFound)}
		if c.Path() == "/405" {return echo.NewHTTPError(http.StatusMethodNotAllowed)}
		if c.Path() == "/406" {return echo.NewHTTPError(http.StatusNotAcceptable)}
		if c.Path() == "/407" {return echo.NewHTTPError(http.StatusProxyAuthRequired)}
		if c.Path() == "/408" {return echo.NewHTTPError(http.StatusRequestTimeout)}
		if c.Path() == "/409" {return echo.NewHTTPError(http.StatusConflict)}
		if c.Path() == "/410" {return echo.NewHTTPError(http.StatusGone)}
		if c.Path() == "/411" {return echo.NewHTTPError(http.StatusLengthRequired)}
		if c.Path() == "/412" {return echo.NewHTTPError(http.StatusPreconditionFailed)}
		if c.Path() == "/413" {return echo.NewHTTPError(http.StatusRequestEntityTooLarge)}
		if c.Path() == "/414" {return echo.NewHTTPError(http.StatusRequestURITooLong)}
		if c.Path() == "/415" {return echo.NewHTTPError(http.StatusUnsupportedMediaType)}
		if c.Path() == "/416" {return echo.NewHTTPError(http.StatusRequestedRangeNotSatisfiable)}
		if c.Path() == "/417" {return echo.NewHTTPError(http.StatusExpectationFailed)}
		if c.Path() == "/418" {return echo.NewHTTPError(http.StatusTeapot)}
		if c.Path() == "/421" {return echo.NewHTTPError(http.StatusMisdirectedRequest)}
		if c.Path() == "/422" {return echo.NewHTTPError(http.StatusUnprocessableEntity)}
		if c.Path() == "/423" {return echo.NewHTTPError(http.StatusLocked)}
		if c.Path() == "/424" {return echo.NewHTTPError(http.StatusFailedDependency)}
		if c.Path() == "/425" {return echo.NewHTTPError(http.StatusTooEarly)}
		if c.Path() == "/426" {return echo.NewHTTPError(http.StatusUpgradeRequired)}
		if c.Path() == "/428" {return echo.NewHTTPError(http.StatusPreconditionRequired)}
		if c.Path() == "/429" {return echo.NewHTTPError(http.StatusTooManyRequests)}
		if c.Path() == "/431" {return echo.NewHTTPError(http.StatusRequestHeaderFieldsTooLarge)}
		if c.Path() == "/451" {return echo.NewHTTPError(http.StatusUnavailableForLegalReasons)}
		if c.Path() == "/500" {return echo.NewHTTPError(http.StatusInternalServerError)}
		if c.Path() == "/501" {return echo.NewHTTPError(http.StatusNotImplemented)}
		if c.Path() == "/502" {return echo.NewHTTPError(http.StatusBadGateway)}
		if c.Path() == "/503" {return echo.NewHTTPError(http.StatusServiceUnavailable)}
		if c.Path() == "/504" {return echo.NewHTTPError(http.StatusGatewayTimeout)}
		if c.Path() == "/505" {return echo.NewHTTPError(http.StatusHTTPVersionNotSupported)}
		if c.Path() == "/506" {return echo.NewHTTPError(http.StatusVariantAlsoNegotiates)}
		if c.Path() == "/507" {return echo.NewHTTPError(http.StatusInsufficientStorage)}
		if c.Path() == "/508" {return echo.NewHTTPError(http.StatusLoopDetected)}
		if c.Path() == "/510" {return echo.NewHTTPError(http.StatusNotExtended)}
		if c.Path() == "/511" {return echo.NewHTTPError(http.StatusNetworkAuthenticationRequired)}
		return next(c)
	}
}

Install

go get

Run

 go run main.go

   ____    __
  / __/___/ /  ___
 / _// __/ _ \/ _ \
/___/\__/_//_/\___/ v4.1.14
High performance, minimalist Go web framework
https://echo.labstack.com
____________________________________O/_______
                                    O\
⇨ http server started on [::]:8080

Hit it

~> curl -v 0.0.0.0:8080/401
*   Trying 0.0.0.0...
* TCP_NODELAY set
* Connected to 0.0.0.0 (127.0.0.1) port 8080 (#0)
> GET /401 HTTP/1.1
> Host: 0.0.0.0:8080
> User-Agent: curl/7.54.0
> Accept: */*
>
< HTTP/1.1 401 Unauthorized
< Content-Type: application/json; charset=UTF-8
< Date: Mon, 10 Feb 2020 07:30:37 GMT
< Content-Length: 27
<
{"message":"Unauthorized"}
* Connection #0 to host 0.0.0.0 left intact
~> curl -v 0.0.0.0:8080/501
*   Trying 0.0.0.0...
* TCP_NODELAY set
* Connected to 0.0.0.0 (127.0.0.1) port 8080 (#0)
> GET /501 HTTP/1.1
> Host: 0.0.0.0:8080
> User-Agent: curl/7.54.0
> Accept: */*
>
< HTTP/1.1 501 Not Implemented
< Content-Type: application/json; charset=UTF-8
< Date: Mon, 10 Feb 2020 07:30:39 GMT
< Content-Length: 30
<
{"message":"Not Implemented"}
* Connection #0 to host 0.0.0.0 left intact