如何修复Python3中LinkFinder工具的ssl.PROTOCOL_TLSv1_2已弃用警告？

I ran into this exact warning a while back when using LinkFinder—here's how to fix it cleanly:

The warning comes from line 133 in linkfinder.py, where the code explicitly initializes an SSL context with ssl.PROTOCOL_TLSv1_2—a constant that's been deprecated in newer Python releases because hardcoding specific TLS versions isn't secure or future-proof.

Here are two solid solutions, starting with the best practice:

1. Use Python's Default Secure SSL Context (Recommended) #

This is the safest and simplest fix. Python's create_default_context() method automatically uses the most secure TLS versions supported by your system, eliminating the need to hardcode a deprecated protocol.

• Open your linkfinder.py file and navigate to line 133:

  sslcontext = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
  

• Replace that line entirely with:

  sslcontext = ssl.create_default_context()
  

• Save the file, run LinkFinder again, and the warning should be gone. Bonus: You'll be using a more secure SSL setup than before.

2. Explicitly Use a Supported TLS Protocol (If You Need Control) #

If you have a specific reason to enforce a range of TLS versions (e.g., testing against older servers), you can use non-deprecated constants instead:

• For client-side connections (which LinkFinder uses), replace line 133 with:

  sslcontext = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
  # Optional: Lock down TLS versions if required
  sslcontext.min_version = ssl.TLSVersion.TLSv1_2
  sslcontext.max_version = ssl.TLSVersion.TLSv1_3
  

• This uses a supported protocol constant while still letting you define acceptable TLS versions if needed.

Quick Background #

Python deprecated ssl.PROTOCOL_TLSv1_2 because modern security practices prioritize letting the client and server negotiate the highest secure TLS version they both support. Using create_default_context() handles this negotiation automatically, so you don't have to worry about outdated protocols.

内容的提问来源于stack exchange，提问作者kylojshan