#! /usr/bin/env python

import sys, os
import socket, select

host = "localhost"
port = 4711

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE,1)
sock.connect((host, port))

sslobj = socket.ssl(sock, None, None) 

print >> sys.stderr, "\nSSL Issuer: '%s'" % sslobj.issuer()
print >> sys.stderr, "SSL Server: '%s'\n" % sslobj.server()

# Nonblocking Mode
sock.setblocking(0)

while 1:
  try:
    readset = [ sock.fileno() ]
    timeout = 1.0
    print "... selecting, readset = %s, timeout = %s" % (readset, timeout)
    r,_,_ = select.select(readset, [], [] , timeout)
    print "... returning from select - r = %s" % (r)

    # Something to read from socket?
    if sock.fileno() in r:
      print "... something to read from socket/ssl has arrived!"
      data = ""
      while 1:
        try:
          newdata = ""
          print "... going to read from sslobj"
          newdata = sslobj.read()
          print "... read '%s'" % (newdata)
        except socket.sslerror, (errno, strerror):
          if errno == 2: # the operation did not complete
            print >> sys.stderr, "\n... (ignored) ## SSL Socket Error (%s): '%s' ##" % (errno, strerror)
            # read more next time
            break
          elif errno == 11 or (errno == 0 and running_under_windows):
            print >> sys.stderr, "\n... (ignored) ## SSL Socket Error (%s): '%s' ##" % (errno, strerror)
            # reading finished ...
            break
          elif errno == 6:
            print >> sys.stderr, "\n... (ignored) ## SSL Socket Error (%s): '%s' ##" % (errno, strerror)
            # connection has been closed
            newdata = ""
          else:
            print >> sys.stderr, "\n## SSL Socket Error (%s): '%s' ##" % (errno, strerror)
            sys.exit()
        if not newdata:
          sys.stdout.write(data)
          sys.stdout.flush()
          print >> sys.stderr, "\n## SSL Socket: Counterpart has closed the connection ##"
          sys.exit()
        else:
          data += newdata

      sys.stdout.write(data)
      sys.stdout.flush()

  except select.error, (errno, strerror):
    print >> sys.stderr, "\n## Error %s in select: '%s' ##" % (errno, strerror)