FTP
Mock 228 Entering Long Passive Mode Response
Entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
View full reference →1 HTTP Response
HTTP/1.1 228 Entering Long Passive Mode
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 21
{
"status": "success"
}
2 Test with curl
curl -i https://httpbin.org/status/228
3 Return 228 Entering Long Passive Mode in Your Framework
django
from django.http import JsonResponse
def my_view(request):
return JsonResponse(
{"status": "success"},
status=228,
)
flask
from flask import Flask, jsonify
app = Flask(__name__)
@app.route("/endpoint")
def my_endpoint():
return jsonify({"status": "success"}), 228
fastapi
from fastapi import FastAPI
from fastapi.responses import JSONResponse
app = FastAPI()
@app.get("/endpoint")
def my_endpoint():
return JSONResponse(
content={"status": "success"},
status_code=228,
)
express.js
// Express.js
app.get('/endpoint', (req, res) => {
res.status(228).json({"status": "success"});
});
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(228)
.body(Map.of("error", "entering_long_passive_mode",
"message", "Entering Long Passive Mode"));
}
}
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(228)
json.NewEncoder(w).Encode(map[string]string{
"error": "entering_long_passive_mode",
"message": "Entering Long Passive Mode",
})
}
ruby on rails
class MyController < ApplicationController
def my_action
render json: {"status": "success"},
status: :entering_long_passive_mode
end
end
asp.net core
// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
Results.Json(
new { error = "entering_long_passive_mode", message = "Entering Long Passive Mode" },
statusCode: 228
)
);