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ussl – ssl module
This module provides access to Transport Layer Security (often known as "Secure Sockets
Layer") encryption and peer authentication facilities for network sockets, both client-side and
server-side.
Functions
ssl.wrap_socket(sock, keyfile=None, certfile=None, server_side=False,
cert_reqs=CERT_NONE, ca_certs=None)
Takes an instance
sock
of
socket.socket
, and returns an instance of ssl.SSLSocket, a
subtype of
socket.socket
, which wraps the underlying socket in an SSL context. Example:
import socket
import ssl
s = socket.socket()
ss = ssl.wrap_socket(s)
ss.connect(socket.getaddrinfo( 'www.google.com' , 443 )[ 0 ][ -1 ])
Certificates must be used in order to validate the other side of the connection, and also to
authenticate ourselves with the other end. Such certificates must be stored as files using the
FTP server, and they must be placed in specific paths with specific names.
For instance, to connect to the Blynk servers using certificates, take the file
ca.pem
located
in the
blynk
examples folder and put it in
/flash/cert/
. Then do:
import socket
import ssl
s = socket.socket()
ss = ssl.wrap_socket(s, cert_reqs=ssl.CERT_REQUIRED, ca_certs= '/flash/cert/ca.pem' )
ss.connect(socket.getaddrinfo( 'cloud.blynk.cc' , 8441 )[ 0 ][ -1 ])
SSL sockets inherit all methods and from the standard sockets, see the
usocket
module.
Exceptions
ssl.SSLError
Constants
5.3.16 ussl
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