SIP
Giả lập phản hồi 412 Conditional Request Failed
The precondition given in the request was not met. Used with SIP event state publication (RFC 3903).
Xem tài liệu tham khảo đầy đủ →1 Phản hồi HTTP
HTTP/1.1 412 Conditional Request Failed
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 80
{
"error": "conditional_request_failed",
"message": "Conditional Request Failed"
}
2 Kiểm tra với curl
curl -i https://httpbin.org/status/412
3 Trả về 412 Conditional Request Failed trong Framework của bạn
django
from django.http import JsonResponse
def my_view(request):
return JsonResponse(
{"error": "conditional_request_failed", "message": "Conditional Request Failed"},
status=412,
)
flask
from flask import Flask, jsonify
app = Flask(__name__)
@app.route("/endpoint")
def my_endpoint():
return jsonify({"error": "conditional_request_failed", "message": "Conditional Request Failed"}), 412
fastapi
from fastapi import FastAPI
from fastapi.responses import JSONResponse
app = FastAPI()
@app.get("/endpoint")
def my_endpoint():
return JSONResponse(
content={"error": "conditional_request_failed", "message": "Conditional Request Failed"},
status_code=412,
)
express.js
// Express.js
app.get('/endpoint', (req, res) => {
res.status(412).json({"error": "conditional_request_failed", "message": "Conditional Request Failed"});
});
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(412)
.body(Map.of("error", "conditional_request_failed",
"message", "Conditional Request Failed"));
}
}
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(412)
json.NewEncoder(w).Encode(map[string]string{
"error": "conditional_request_failed",
"message": "Conditional Request Failed",
})
}
ruby on rails
class MyController < ApplicationController
def my_action
render json: {"error": "conditional_request_failed", "message": "Conditional Request Failed"},
status: :conditional_request_failed
end
end
asp.net core
// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
Results.Json(
new { error = "conditional_request_failed", message = "Conditional Request Failed" },
statusCode: 412
)
);