#!/usr/bin/env python
'''Priklad pouziti M2Crypto - pripojeni k https serveru'''

request = "GET / HTTP/1.1\x0D\x0AHost: www.verisign.com\x0D\x0A\x43onnection: Close\x0D\x0A\x0D\x0A"

from M2Crypto.SSL.Context import Context
from M2Crypto.SSL.Connection import Connection
from sys import exit

ctx = Context() #vytvorime kontext pripojeni
ctx.load_verify_info('TrustStore.pem') #nacteme certifikat do kontextu

con = Connection(ctx) #vytvorime objekt pripojeni
if con.connect(('www.verisign.com', 443)) <= 0: #pokus o spojeni se serverem
    print 'Error attempting to connect'
    ctx.close()
    exit(1)

if not con.verify_ok(): #pokud nemame platny certifikat - chyba
    print 'Certificate verification error: %i' % con.get_verify_result() #cislo chyby
#    con.clear() #tento prikaz nefunguje s PEM knihovnou
    con.close()
    ctx.close()
    exit(1)

con.write(request) #posleme pozadavek serveru
while 1:
    p = con.read(1023) #ziskame data ze serveru
    if p == '': break
    print p

con.close() #ukonceni spojeni
ctx.close() #uvolneni kontextu