HTTP

510 Not Extended Antwort simulieren

Further extensions to the request are required for the server to fulfill it.

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1 HTTP-Antwort

HTTP-Antwort
HTTP/1.1 510 Not Extended
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 52

{
  "error": "server_error",
  "message": "Not Extended"
}

2 Mit curl testen

terminal
curl -i https://httpbin.org/status/510

3 510 Not Extended in Ihrem Framework zurückgeben

django
from django.http import JsonResponse


def my_view(request):
    return JsonResponse(
        {"error": "server_error", "message": "Not Extended"},
        status=510,
    )
flask
from flask import Flask, jsonify

app = Flask(__name__)


@app.route("/endpoint")
def my_endpoint():
    return jsonify({"error": "server_error", "message": "Not Extended"}), 510
fastapi
from fastapi import FastAPI
from fastapi.responses import JSONResponse

app = FastAPI()


@app.get("/endpoint")
def my_endpoint():
    return JSONResponse(
        content={"error": "server_error", "message": "Not Extended"},
        status_code=510,
    )
express.js
// Express.js
app.get('/endpoint', (req, res) => {
  res.status(510).json({"error": "server_error", "message": "Not Extended"});
});
spring boot
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.Map;

@RestController
public class MyController {

    @GetMapping("/endpoint")
    public ResponseEntity<Map<String, Object>> myEndpoint() {
        return ResponseEntity
            .status(510)
            .body(Map.of("error", "not_extended",
                         "message", "Not Extended"));
    }
}
go net/http
package main

import (
    "encoding/json"
    "net/http"
)

func myHandler(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Type", "application/json")
    w.WriteHeader(510)
    json.NewEncoder(w).Encode(map[string]string{
        "error":   "not_extended",
        "message": "Not Extended",
    })
}
ruby on rails
class MyController < ApplicationController
  def my_action
    render json: {"error": "server_error", "message": "Not Extended"},
           status: :not_extended
  end
end
asp.net core
// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
    Results.Json(
        new { error = "not_extended", message = "Not Extended" },
        statusCode: 510
    )
);

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