ftpserverpy

#!/usr/bin/python3
import os
import sys
import socket
import threading
import time
from pyftpdlib.authorizers import DummyAuthorizer
from pyftpdlib.handlers import FTPHandler
from pyftpdlib.servers import FTPServer

# Auto-detect folder containing this script (for Finder double-click)
directory = os.path.dirname(os.path.abspath(__file__))

authorizer = DummyAuthorizer()
# Grant anonymous user full permissions including write access
# Files will be created with the permissions of the user running this script
authorizer.add_anonymous(directory, perm="elradfmwMT")

handler = FTPHandler
handler.authorizer = authorizer

# Data transfer settings for streaming
handler.timeout = 7200  # 2 hour timeout for control commands
handler.dtp_handler.timeout = 7200  # 2 hour timeout for data transfers

# Connection pool settings
handler.max_cons = 100
handler.max_cons_per_ip = 100  # Allow multiple connections per IP

# Enable passive mode for better streaming support
handler.permit_foreign_addresses = True
handler.passive_ports = range(1024, 65535)  # All non-privileged ports

server = FTPServer(("0.0.0.0", 2121), handler)
server.max_cons = 100

print(f"FTP server running on port 2121, sharing: {directory}")
print("✓ Optimized for streaming clients with keep-alive support")
print("✓ 2-hour timeouts for long-running transfers")
print("✓ Connection limits: 50 total, 50 per IP")
print("✓ TCP keep-alive enabled (60s idle, 30s probes, 5 attempts)")
print("✓ Socket buffers optimized (256KB send/recv)")
print("✓ TCP_NODELAY enabled for low-latency streaming")
print("Access via ftp://your-ip:2121 (anonymous)")
print("\nServer started...")
server.serve_forever()