examples/simple/client.py

#
# client.py
#
# Copyright (C) 2001 Martin Sjögren and AB Strakt, All rights reserved
#
# $Id: client.py,v 1.7 2002/08/15 12:20:46 martin Exp $
#
"""
Simple SSL client, using blocking I/O
"""

from OpenSSL import SSL
import sys, os, select, socket

def verify_cb(conn, cert, errnum, depth, ok):
    # This obviously has to be updated
    print 'Got certificate: %s' % cert.get_subject()
    return ok

if len(sys.argv) < 3:
    print 'Usage: python[2] client.py HOST PORT'
    sys.exit(1)

dir = os.path.dirname(sys.argv[0])
if dir == '':
    dir = os.curdir

# Initialize context
ctx = SSL.Context(SSL.SSLv23_METHOD)
ctx.set_verify(SSL.VERIFY_PEER, verify_cb) # Demand a certificate
ctx.use_privatekey_file (os.path.join(dir, 'client.pkey'))
ctx.use_certificate_file(os.path.join(dir, 'client.cert'))
ctx.load_verify_locations(os.path.join(dir, 'CA.cert'))

# Set up client
sock = SSL.Connection(ctx, socket.socket(socket.AF_INET, socket.SOCK_STREAM))
sock.connect((sys.argv[1], int(sys.argv[2])))

while 1:
    line = sys.stdin.readline()
    if line == '':
        break
    try:
        sock.send(line)
        sys.stdout.write(sock.recv(1024))
        sys.stdout.flush()
    except SSL.Error:
        print 'Connection died unexpectedly'
        break


sock.shutdown()
sock.close()