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#!/usr/bin/env python3
from http.server import HTTPServer, BaseHTTPRequestHandler, ThreadingHTTPServer
import json
import sys
import os
import random
import threading
import time
from datetime import datetime, timedelta
sessions = {}
clients = {}
class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
def _add_cors_headers(self):
self.send_header('Access-Control-Allow-Origin', '*')
self.send_header('Access-Control-Allow-Methods', 'GET, POST, OPTIONS')
self.send_header('Access-Control-Allow-Headers', 'Content-Type')
def do_OPTIONS(self):
self.send_response(200)
self._add_cors_headers()
self.end_headers()
def do_GET(self):
if self.path == '/':
self.send_response(200)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'message': 'API Server is running!', 'status': 'ok'}
self.wfile.write(json.dumps(response).encode())
elif self.path == '/health':
self.send_response(200)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'status': 'healthy', 'active_sessions': len(sessions)}
self.wfile.write(json.dumps(response).encode())
elif self.path.startswith('/api/session'):
self.handle_session_get()
elif self.path.startswith('/api/events/'):
self.handle_sse_connection()
else:
self.send_response(404)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Endpoint not found'}
self.wfile.write(json.dumps(response).encode())
def do_POST(self):
if self.path == '/api/session':
self.handle_session_post()
elif self.path == '/api/message':
self.handle_message_post()
elif self.path.startswith('/api/session/'):
pass
else:
content_length = int(self.headers['Content-Length']) if self.headers.get('Content-Length') else 0
post_data = self.rfile.read(content_length) if content_length > 0 else b''
try:
data = json.loads(post_data.decode()) if post_data else {}
except json.JSONDecodeError:
self.send_response(400)
self.send_header('Content-type', 'application/json')
self.end_headers()
response = {'error': 'Invalid JSON'}
self.wfile.write(json.dumps(response).encode())
return
self.send_response(200)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'message': 'Data received', 'data': data}
self.wfile.write(json.dumps(response).encode())
def handle_session_get(self):
path_parts = self.path.split('/')
if len(path_parts) >= 4 and path_parts[3]:
session_code = path_parts[3].upper()
if session_code in sessions:
self.send_response(200)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'exists': True, 'session_code': session_code}
self.wfile.write(json.dumps(response).encode())
else:
self.send_response(404)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'exists': False, 'session_code': session_code}
self.wfile.write(json.dumps(response).encode())
else:
self.send_response(400)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Missing session code'}
self.wfile.write(json.dumps(response).encode())
def handle_session_post(self):
content_length = int(self.headers['Content-Length']) if self.headers.get('Content-Length') else 0
post_data = self.rfile.read(content_length) if content_length > 0 else b''
try:
data = json.loads(post_data.decode()) if post_data else {}
except json.JSONDecodeError:
self.send_response(400)
self.send_header('Content-type', 'application/json')
self.end_headers()
response = {'error': 'Invalid JSON'}
self.wfile.write(json.dumps(response).encode())
return
session_code = None
attempts = 0
while session_code is None and attempts < 100:
code = ''.join(random.choices('ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', k=4))
if code not in sessions:
session_code = code
attempts += 1
if session_code is None:
self.send_response(500)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Could not generate unique session code'}
self.wfile.write(json.dumps(response).encode())
return
sessions[session_code] = {
'clients': [],
'created_at': datetime.now(),
'host': data.get('client_id', 'unknown')
}
self.send_response(201)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'session_code': session_code, 'created': True}
self.wfile.write(json.dumps(response).encode())
def handle_sse_connection(self):
path_parts = self.path.split('/')
if len(path_parts) >= 5 and path_parts[3] and path_parts[4]:
session_code = path_parts[3].upper()
client_id = path_parts[4]
if session_code in sessions and client_id:
if client_id not in sessions[session_code]['clients']:
sessions[session_code]['clients'].append(client_id)
clients[client_id] = {
'session': session_code,
'connection': self
}
self.send_response(200)
self.send_header('Content-Type', 'text/event-stream')
self.send_header('Cache-Control', 'no-cache')
self.send_header('Connection', 'keep-alive')
self._add_cors_headers()
self.end_headers()
try:
while True:
time.sleep(30)
self.wfile.write(b': keepalive\n\n')
self.wfile.flush()
except:
if client_id in clients:
if client_id in sessions[session_code]['clients']:
sessions[session_code]['clients'].remove(client_id)
del clients[client_id]
else:
self.send_response(404)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Session not found or missing client ID'}
self.wfile.write(json.dumps(response).encode())
else:
self.send_response(400)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Missing session code or client ID'}
self.wfile.write(json.dumps(response).encode())
def handle_message_post(self):
content_length = int(self.headers['Content-Length']) if self.headers.get('Content-Length') else 0
post_data = self.rfile.read(content_length) if content_length > 0 else b''
try:
data = json.loads(post_data.decode())
except json.JSONDecodeError:
self.send_response(400)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Invalid JSON'}
self.wfile.write(json.dumps(response).encode())
return
client_id = data.get('client_id')
session_code = data.get('session_code')
if session_code and session_code in sessions:
broadcast_message = {
'type': 'message',
'client_id': client_id,
'username': data.get('username', f'User-{client_id[:8]}'),
'content': data['content'],
'timestamp': datetime.now().isoformat(),
'session_code': session_code
}
if 'replyTo' in data:
broadcast_message['replyTo'] = data['replyTo']
for cid in sessions[session_code]['clients']:
if cid in clients and cid != client_id:
try:
conn = clients[cid]['connection']
event_data = f"data: {json.dumps(broadcast_message)}\n\n"
conn.wfile.write(event_data.encode())
conn.wfile.flush()
except:
pass
self.send_response(200)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'sent': True}
self.wfile.write(json.dumps(response).encode())
else:
self.send_response(404)
self.send_header('Content-type', 'application/json')
self._add_cors_headers()
self.end_headers()
response = {'error': 'Session not found'}
self.wfile.write(json.dumps(response).encode())
def log_message(self, format, *args):
pass
def cleanup_sessions():
current_time = datetime.now()
expired_sessions = []
for session_code, session_data in sessions.items():
if current_time - session_data['created_at'] > timedelta(minutes=15):
expired_sessions.append(session_code)
for session_code in expired_sessions:
if session_code in sessions:
for client_id in sessions[session_code]['clients']:
if client_id in clients:
try:
conn = clients[client_id]['connection']
event_data = f"data: {json.dumps({'type': 'session_expired', 'session_code': session_code})}\n\n"
conn.wfile.write(event_data.encode())
conn.wfile.flush()
except:
pass
del sessions[session_code]
if expired_sessions:
print(f"Cleaned up {len(expired_sessions)} expired sessions")
def run_server(port=8000, host='0.0.0.0'):
server_address = (host, port)
httpd = ThreadingHTTPServer(server_address, SimpleHTTPRequestHandler)
print(f"Server running on http://{host}:{port}")
print("Press Ctrl+C to stop")
def cleanup_timer():
while True:
time.sleep(300)
cleanup_sessions()
cleanup_thread = threading.Thread(target=cleanup_timer, daemon=True)
cleanup_thread.start()
try:
httpd.serve_forever()
except KeyboardInterrupt:
print("\nServer stopped")
httpd.server_close()
if __name__ == '__main__':
port = int(sys.argv[1]) if len(sys.argv) > 1 else 7860
run_server(port)
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