A convenience function helps create :class:`SSLContext` objects for common
purposes.
-.. function:: create_default_context(purpose=Purpose.SERVER_AUTH, cafile=None, capath=None, cadata=None)
+.. function:: create_default_context(purpose=Purpose.SERVER_AUTH, *,\
+ cafile=None, capath=None, cadata=None)
Return a new :class:`SSLContext` object with default settings for
the given *purpose*. The settings are chosen by the :mod:`ssl` module,
Random generation
^^^^^^^^^^^^^^^^^
-.. function:: RAND_bytes(num)
+.. function:: RAND_bytes(num, /)
Return *num* cryptographically strong pseudo-random bytes. Raises an
:class:`SSLError` if the PRNG has not been seeded with enough data or if the
:func:`ssl.RAND_egd` and :func:`ssl.RAND_add` to increase the randomness of
the pseudo-random number generator.
-.. function:: RAND_add(bytes, entropy)
+.. function:: RAND_add(bytes, entropy, /)
Mix the given *bytes* into the SSL pseudo-random number generator. The
parameter *entropy* (a float) is a lower bound on the entropy contained in
.. versionchanged:: 3.10
The *timeout* parameter was added.
-.. function:: DER_cert_to_PEM_cert(DER_cert_bytes)
+.. function:: DER_cert_to_PEM_cert(der_cert_bytes)
Given a certificate as a DER-encoded blob of bytes, returns a PEM-encoded
string version of the same certificate.
-.. function:: PEM_cert_to_DER_cert(PEM_cert_string)
+.. function:: PEM_cert_to_DER_cert(pem_cert_string)
Given a certificate as an ASCII PEM string, returns a DER-encoded sequence of
bytes for that same certificate.
.. deprecated:: 3.6
Use :meth:`~SSLSocket.recv` instead of :meth:`~SSLSocket.read`.
-.. method:: SSLSocket.write(buf)
+.. method:: SSLSocket.write(data)
- Write *buf* to the SSL socket and return the number of bytes written. The
- *buf* argument must be an object supporting the buffer interface.
+ Write *data* to the SSL socket and return the number of bytes written. The
+ *data* argument must be an object supporting the buffer interface.
Raise :exc:`SSLWantReadError` or :exc:`SSLWantWriteError` if the socket is
:ref:`non-blocking <ssl-nonblocking>` and the write would block.
.. versionchanged:: 3.5
The socket timeout is no longer reset each time bytes are received or sent.
- The socket timeout is now the maximum total duration to write *buf*.
+ The socket timeout is now the maximum total duration to write *data*.
.. deprecated:: 3.6
Use :meth:`~SSLSocket.send` instead of :meth:`~SSLSocket.write`.
:meth:`~socket.socket.recv` and :meth:`~socket.socket.send` instead of these
methods.
-.. method:: SSLSocket.do_handshake()
+.. method:: SSLSocket.do_handshake(block=False)
Perform the SSL setup handshake.
+ If *block* is true and the timeout obtained by :meth:`~socket.socket.gettimeout`
+ is zero, the socket is set in blocking mode until the handshake is performed.
+
.. versionchanged:: 3.4
- The handshake method also performs :func:`match_hostname` when the
+ The handshake method also performs :func:`!match_hostname` when the
:attr:`~SSLContext.check_hostname` attribute of the socket's
:attr:`~SSLSocket.context` is true.
.. versionchanged:: 3.7
Hostname or IP address is matched by OpenSSL during handshake. The
- function :func:`match_hostname` is no longer used. In case OpenSSL
+ function :func:`!match_hostname` is no longer used. In case OpenSSL
refuses a hostname or IP address, the handshake is aborted early and
a TLS alert message is sent to the peer.
provided as part of the operating system, though, it is likely to be
configured properly.
-.. method:: SSLContext.set_ciphers(ciphers)
+.. method:: SSLContext.set_ciphers(ciphers, /)
Set the available ciphers for sockets created with this context.
It should be a string in the `OpenSSL cipher list format
TLS 1.3 cipher suites cannot be disabled with
:meth:`~SSLContext.set_ciphers`.
-.. method:: SSLContext.set_alpn_protocols(protocols)
+.. method:: SSLContext.set_alpn_protocols(alpn_protocols)
Specify which protocols the socket should advertise during the SSL/TLS
handshake. It should be a list of ASCII strings, like ``['http/1.1',
.. versionadded:: 3.5
-.. method:: SSLContext.set_npn_protocols(protocols)
+.. method:: SSLContext.set_npn_protocols(npn_protocols)
Specify which protocols the socket should advertise during the SSL/TLS
handshake. It should be a list of strings, like ``['http/1.1', 'spdy/2']``,
.. versionadded:: 3.7
-.. attribute:: SSLContext.set_servername_callback(server_name_callback)
+.. method:: SSLContext.set_servername_callback(server_name_callback)
This is a legacy API retained for backwards compatibility. When possible,
you should use :attr:`sni_callback` instead. The given *server_name_callback*
.. versionadded:: 3.4
-.. method:: SSLContext.load_dh_params(dhfile)
+.. method:: SSLContext.load_dh_params(dhfile, /)
Load the key generation parameters for Diffie-Hellman (DH) key exchange.
Using DH key exchange improves forward secrecy at the expense of
.. versionadded:: 3.3
-.. method:: SSLContext.set_ecdh_curve(curve_name)
+.. method:: SSLContext.set_ecdh_curve(curve_name, /)
Set the curve name for Elliptic Curve-based Diffie-Hellman (ECDH) key
exchange. ECDH is significantly faster than regular DH while arguably
A boolean indicating whether the memory BIO is current at the end-of-file
position.
- .. method:: MemoryBIO.read(n=-1)
+ .. method:: MemoryBIO.read(n=-1, /)
Read up to *n* bytes from the memory buffer. If *n* is not specified or
negative, all bytes are returned.
- .. method:: MemoryBIO.write(buf)
+ .. method:: MemoryBIO.write(buf, /)
Write the bytes from *buf* to the memory BIO. The *buf* argument must be an
object supporting the buffer protocol.
.. versionchanged:: 3.7
Hostname matchings is now performed by OpenSSL. Python no longer uses
- :func:`match_hostname`.
+ :func:`!match_hostname`.
In server mode, if you want to authenticate your clients using the SSL layer
(rather than using a higher-level authentication mechanism), you'll also have
projects / thirdparty / Python / cpython.git / commitdiff
