#!/usr/bin/env python2

# $ for i in {tls1,tls1_1,tls1_2} ; do echo test | openssl s_client -connect localhost:3333 -quiet -CAfile server.pem-$i ; done


import ssl, socket, sys

print (sys.version)
print (ssl.OPENSSL_VERSION)

while True:
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        s.bind(('127.0.0.1', 3333))
        s.listen(10)
        s, _ = s.accept()
        s = ssl.wrap_socket(
            s,
            server_side=True,
            keyfile="server.pem",
            certfile="server.pem",
            ssl_version = ssl.PROTOCOL_TLS
        )

        print (s.recv(16))
        s.close()
    except Exception as e:
        print (str(e))


#  $ cat server.pem
#  -----BEGIN CERTIFICATE-----
#  MIIDYDCCAkigAwIBAgIJAMtaWn0ONkNiMA0GCSqGSIb3DQEBCwUAMEUxCzAJBgNV
#  BAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBX
#  aWRnaXRzIFB0eSBMdGQwHhcNMTcwOTEzMTUyODA5WhcNMTgwOTEzMTUyODA5WjBF
#  MQswCQYDVQQGEwJBVTETMBEGA1UECAwKU29tZS1TdGF0ZTEhMB8GA1UECgwYSW50
#  ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB
#  CgKCAQEApof9hLz7XfXdFaKKvuYNLrv8OXaFroEZh7sTFc+wQGLELAQ6zUF1SL2G
#  0wI9BOqq4LDHLr/ku+3gZKdN4r8S31t7b/7LbovG6GHIYgaauADkWwEdNX4AD2Nr
#  n0QU68FsZMe/Q4sP42dtMKlUpRApBRpaDLP1tPQAALzT+yuv95jeDmICDgRGnyNl
#  ftlhORyyMJepksUCgrbDcAn4JIhdsmKXLvHmV/duShDOA2tfnnCpQLETUiyyhcxg
#  Om6x4z3OnyACxlSqWCnr78ixiot/CUEyvcvQtWYCmReoS6rnOmzOlxMJbwWwosnD
#  VjOKUMLSLW0zDnS2R0e5Vyta79X9jwIDAQABo1MwUTAdBgNVHQ4EFgQUj+pImHAY
#  8ySK8g9ZBaZoU+uuCoIwHwYDVR0jBBgwFoAUj+pImHAY8ySK8g9ZBaZoU+uuCoIw
#  DwYDVR0TAQH/BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAk8+RWvRB42VcAu4L
#  FazL9R+R4PgzFtsDqJ0ohNX3R/mVzLtH1m1QvglWH7V5bZu1mNf0lx8MnFbiThow
#  ZWZ7cfv/HvBP+47kSuOX2vHLz9BeoBNfBEdc0gsLdg1WUGGpjKuOByDC2G7++Trf
#  CNqXlY3B2LWE4rfxncK5tjifuaMfF7dTp/syXJBHFKS9Cp80Q51jt5E/tLivbYYu
#  2awxhtlKlPUcpwPfqd4m/CoaxoYb/K2KboedpX6/NGVmz+M2w+EcDhCO85xlGGVZ
#  EBthfX/GFVGaLJYO+RPKm93efAdog8/Yd1LUEzPNoAgKMj4VZtm0B26vB4yvbzci
#  eatNxw==
#  -----END CERTIFICATE-----
#  -----BEGIN PRIVATE KEY-----
#  MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCmh/2EvPtd9d0V
#  ooq+5g0uu/w5doWugRmHuxMVz7BAYsQsBDrNQXVIvYbTAj0E6qrgsMcuv+S77eBk
#  p03ivxLfW3tv/stui8boYchiBpq4AORbAR01fgAPY2ufRBTrwWxkx79Diw/jZ20w
#  qVSlECkFGloMs/W09AAAvNP7K6/3mN4OYgIOBEafI2V+2WE5HLIwl6mSxQKCtsNw
#  CfgkiF2yYpcu8eZX925KEM4Da1+ecKlAsRNSLLKFzGA6brHjPc6fIALGVKpYKevv
#  yLGKi38JQTK9y9C1ZgKZF6hLquc6bM6XEwlvBbCiycNWM4pQwtItbTMOdLZHR7lX
#  K1rv1f2PAgMBAAECggEALFsse56alXxXVtvkeNRtznTjyap4EPLyCeUaQEUBfSTR
#  e6fkwacdxjI1Jx8Bgb2/pflwFFOoaSYDDsxBQpQCQtvrFPmY1ekFIgBpjzKTI0+Z
#  g2PYk9brzS1+DP3lVKZAaNeLakIwCTITM1Lm6NBVHLbYJWoJmBklpwykqdIJHLl8
#  0QT+3gNRjrY8Q5+53255pMacBlvz5755IZgRxqWIZTa4Blko/1IObIYz271qjojA
#  u64h88+744eOTRkxTi6SJk+Ci9joiHdsqCPi38J6hjshmK8MtuFHoe3XtV06osDW
#  7REaa+k9L0mULO370p+jZbg2/U9p5sV96YrSXWSqgQKBgQDYC0ksuqsxBFlS696f
#  /tpQ1Vy52V14MkeZiQKmui2E2wKEIjSsFH5q9G49thztv/S4GhdGkdJsSCWO8yqx
#  MnFYmZytrpCHQ/n6KrF1IN21cWzYwTKyMqJ76t+QCvMHKxH8TBC2KhPhWPEx0Y19
#  07RSO4pYRtmDS3YB8L6IEJWhqwKBgQDFVH4z2CBOXAY3ROacoo4JyQqWXj6PqChJ
#  lC44U7i4TWpwe3moqHGJks9gK7uysOoAko4aKAq7wEyvp9SRmCmcbpxPS3SHBLOB
#  nW1ssldJWRiE3wXqkRtOUXQF5z7MHX/9B4wwHbRu9UYZDHpGrA15D8As0z6kdlBb
#  br6KevQ3rQKBgQDThJkr9cbNwthBWzUnqDjOk1apjqr4lyGKrJ2v5u/R9yrLe0He
#  iGINDSsxuC8yhpFt/f1z1ikSYsCC6IiP3Dck66B+Wz6dcGw6BbqgVoE6t8Y9oUml
#  NfXnJNmlCVNPXVfKkB58e03jf1UF1YiV/MO7DxgvvY4QAb2TwMSKKtKU6QKBgQDA
#  6bdva805jhGtmrhxTSHbQyYMlxpGSzkHpcwB2SdvVo/GY5AuaG6G9nWyKU8YhIhg
#  AubVf2vu3TKbT1Iq/D1B54j8pGHJVbk/7+34I+ndlTK5Q2d/SFkPmeX5l3b3CagE
#  cIqGx6OMDlF3T5GC4dVSEynnKKXHFru8h2nT7BwxCQKBgGGAd62eEOcV1eUlDHf4
#  uvc39zulWxOBZlOcrHSWFIKiNYjafNB10uuaILYG9rtNXs/5zmkh7n81rAOQDNi1
#  d8krVslqz9DKuBfpEbhttsWJl9EH7U68poCt4z40H90zbek7f/5EH4oUX4aBcGHs
#  wz9TlwGYRdJze4wjX+r2LkzN
#  -----END PRIVATE KEY-----