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Author Nixawk
Recipients Nixawk
Date 2017-10-26.04:11:19
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
The original get_server_certificate in does not support socket timeout,

def get_server_certificate(addr, ssl_version=PROTOCOL_TLS, ca_certs=None):
    """Retrieve the certificate from the server at the specified address,
    and return it as a PEM-encoded string.
    If 'ca_certs' is specified, validate the server cert against it.
    If 'ssl_version' is specified, use it in the connection attempt."""

    host, port = addr
    if ca_certs is not None:
        cert_reqs = CERT_REQUIRED
        cert_reqs = CERT_NONE
    context = _create_stdlib_context(ssl_version,
    with  create_connection(addr) as sock:
        with context.wrap_socket(sock) as sslsock:
            dercert = sslsock.getpeercert(True)
    return DER_cert_to_PEM_cert(dercert)

If a timeout parameter, a sample demo can be here:

>>> import ssl
>>> ssl.get_server_certificate(("", 443), timeout=6)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/", line 1017, in get_server_certificate
    with closing(create_connection(addr, timeout)) as sock:
  File "/usr/lib/python2.7/", line 575, in create_connection
    raise err
socket.error: [Errno 101] Network is unreachable
Date User Action Args
2017-10-26 04:11:27Nixawksetrecipients: + Nixawk
2017-10-26 04:11:25Nixawksetmessageid: <>
2017-10-26 04:11:25Nixawklinkissue31870 messages
2017-10-26 04:11:25Nixawkcreate