Test whether a host and port pair is connectable.

connect.py

import sys
import socket

if __name__ == '__main__':
    host = sys.argv[1] 
    port = sys.argv[2] 
    timeout = sys.argv[3] if 4 <= len(sys.argv) else 30
    s = socket.socket(socket.AF_INET)
    s.settimeout(int(timeout))
    try:
        s.connect((host, int(port)))
        print 'connected'
        s.close()
    except:
        print 'failed'