102 Processing

What This Error Means

The server has received and is processing the request, but no response is available yet.

Used to prevent the client from timing out while waiting for the server to complete the request.

Common Causes

• Long-running request
• WebDAV operations
• Server needs more time to process

How to Fix It (For Visitors)

• Wait for the server to complete processing

How to Fix It (For Developers/Admins)

• Use for operations taking longer than 20 seconds
• Implement proper timeout handling

Code Examples

Here's how to return a 102 status code in various programming languages:

Python (Flask)

from flask import Flask, jsonify

app = Flask(__name__)

@app.route('/endpoint')
def endpoint():
    return jsonify({"message": "Processing"}), 102

Node.js (Express)

const express = require('express');
const app = express();

app.get('/endpoint', (req, res) => {
    res.status(102).json({ message: 'Processing' });
});

PHP

<?php
http_response_code(102);
header('Content-Type: application/json');
echo json_encode(['message' => 'Processing']);
?>

Go

package main

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

func handler(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Type", "application/json")
    w.WriteHeader(102)
    json.NewEncoder(w).Encode(map[string]string{
        "message": "Processing",
    })
}

Java (Spring Boot)

@GetMapping("/endpoint")
public ResponseEntity<Map<String, String>> endpoint() {
    Map<String, String> response = new HashMap<>();
    response.put("message", "Processing");
    return ResponseEntity.status(102).body(response);
}

Ruby (Sinatra)

get '/endpoint' do
    status 102
    json message: 'Processing'
end

Browser Compatibility

Browser	Support	Notes
Chrome	✓ Full Support	All versions
Firefox	✓ Full Support	All versions
Safari	✓ Full Support	All versions
Edge	✓ Full Support	All versions

Official Specification

This status code is defined in RFC 2518.

View on IANA HTTP Status Code Registry →