FTP

محاكاة استجابة 501 Syntax Error in Arguments

Syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.

1 استجابة HTTP

استجابة HTTP

HTTP/1.1 501 Syntax Error in Arguments
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 65

{
  "error": "server_error",
  "message": "Syntax Error in Arguments"
}

2 اختبار باستخدام curl

terminal

curl -i https://httpbin.org/status/501

3 إرجاع 501 Syntax Error in Arguments في إطار العمل الخاص بك

django

from django.http import JsonResponse


def my_view(request):
    return JsonResponse(
        {"error": "server_error", "message": "Syntax Error in Arguments"},
        status=501,
    )

flask

from flask import Flask, jsonify

app = Flask(__name__)


@app.route("/endpoint")
def my_endpoint():
    return jsonify({"error": "server_error", "message": "Syntax Error in Arguments"}), 501

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": "Syntax Error in Arguments"},
        status_code=501,
    )

express.js

// Express.js
app.get('/endpoint', (req, res) => {
  res.status(501).json({"error": "server_error", "message": "Syntax Error in Arguments"});
});

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(501)
            .body(Map.of("error", "syntax_error_in_arguments",
                         "message", "Syntax Error in Arguments"));
    }
}

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(501)
    json.NewEncoder(w).Encode(map[string]string{
        "error":   "syntax_error_in_arguments",
        "message": "Syntax Error in Arguments",
    })
}

ruby on rails

class MyController < ApplicationController
  def my_action
    render json: {"error": "server_error", "message": "Syntax Error in Arguments"},
           status: :syntax_error_in_arguments
  end
end

asp.net core

// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
    Results.Json(
        new { error = "syntax_error_in_arguments", message = "Syntax Error in Arguments" },
        statusCode: 501
    )
);

1 استجابة HTTP

2 اختبار باستخدام curl

3 إرجاع 501 Syntax Error in Arguments في إطار العمل الخاص بك

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