mirror of
https://github.com/johndoe6345789/docker-swarm-termina.git
synced 2026-04-24 13:45:01 +00:00
fee1f8c92c
This change resolves the WebSocket connection error that occurs when Cloudflare or other reverse proxies block WebSocket upgrade attempts. Changes: - Frontend: Configure Socket.IO client to use polling-only transport - Backend: Add documentation comment about transport configuration - Remove WebSocket URL conversion (no longer needed for polling) The error occurred because: 1. Socket.IO started with HTTP polling (successful) 2. Attempted to upgrade to WebSocket (blocked by Cloudflare) 3. Browser received invalid/blocked frames causing "Invalid frame header" 4. Eventually fell back to polling (working) With this fix: - Socket.IO uses HTTP long-polling exclusively - No WebSocket upgrade attempts - No "Invalid frame header" errors - Connection remains stable through Cloudflare Polling transport provides equivalent functionality and reliability. https://claude.ai/code/session_mmQs0
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
"""Main application entry point - refactored modular architecture."""
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from flask import Flask
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from flask_cors import CORS
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from flask_socketio import SocketIO
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from config import logger
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from routes.login import login_bp
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from routes.logout import logout_bp
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from routes.health import health_bp
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from routes.containers.list import list_bp
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from routes.containers.exec import exec_bp
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from routes.containers.start import start_bp
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from routes.containers.stop import stop_bp
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from routes.containers.restart import restart_bp
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from routes.containers.remove import remove_bp
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from handlers.terminal.register import register_terminal_handlers
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from utils.diagnostics.docker_env import diagnose_docker_environment
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from utils.docker_client import get_docker_client
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# Initialize Flask app
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app = Flask(__name__)
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CORS(app, resources={r"/*": {"origins": "*"}})
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# Initialize SocketIO
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# Note: Frontend uses polling-only transport due to Cloudflare/reverse proxy
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# blocking WebSocket connections. Server supports both transports.
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socketio = SocketIO(
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app,
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cors_allowed_origins="*",
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async_mode='threading',
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ping_timeout=60,
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ping_interval=25,
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logger=True,
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engineio_logger=True
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)
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# Register blueprints
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app.register_blueprint(login_bp)
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app.register_blueprint(logout_bp)
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app.register_blueprint(health_bp)
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app.register_blueprint(list_bp)
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app.register_blueprint(exec_bp)
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app.register_blueprint(start_bp)
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app.register_blueprint(stop_bp)
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app.register_blueprint(restart_bp)
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app.register_blueprint(remove_bp)
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# Register WebSocket handlers
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register_terminal_handlers(socketio)
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if __name__ == '__main__':
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# Run diagnostics on startup
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logger.info("Backend server starting...")
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diagnose_docker_environment()
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# Try to get Docker client and log result
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test_client = get_docker_client()
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if test_client:
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logger.info("✓ Docker connection verified on startup")
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else:
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logger.error("✗ Docker connection FAILED on startup - check logs above for details")
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socketio.run(app, host='0.0.0.0', port=5000, debug=True, allow_unsafe_werkzeug=True)
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