The compression() method of sslsocket class in Python

Method Name:

compression

Method Signature:

compression()

Return Value:

A python string specifying the compression method used.
If no compression is used the method returns None.

Overview:

The method compression() returns the compression method used in the secure communication if any.

Example:

# Example Python program that retrieves the
# compression level used in the TLS communication
import socket
import ssl
import platform

# Context
ctx = ssl.create_default_context();
ctx.verify_mode = ssl.CERT_REQUIRED

# Check for OS X platform
if platform.system().lower() == 'darwin':
import certifi
import os

# Load CA certificates used for validating the peer's certificate
ctx.load_verify_locations(
cafile=os.path.relpath(certifi.where()),
capath=None,
cadata=None)

# Connect to the server through an instance of an SSLSocket class
skt = socket.socket()
sec_skt = ctx.wrap_socket(skt, server_hostname="example.org")

# Make a connection to the server
sec_skt.connect(("example.com", 443))
comp = sec_skt.compression()
print("Compression used:")
print(comp)

Output:

Compression used:

None