Fix: Allow Alphanumeric and Underscore Characters in Socket.IO Event Names

[Kantha2004]

Description:

This PR modifies the regular expression used to extract Socket.IO event names to include alphanumeric characters and underscores by using \w.

Previously, the regex only matched lowercase alphabetic characters ([a-z]), which caused issues when event names contained underscores (e.g., "message_sent").

Using \w expands support to:

1. Lowercase and uppercase letters
2. Digits
3. Underscores ( _ )

Changes Made:

Updated regex from:

r'(\d*)\["([a-z]*)"'

to

r'(\d*)\["(\w+)"'

Why This is Needed:

Our Socket.IO event names follow snake_case naming, which includes underscores. Without this change, events like "message_sent"" caused assertion failures during load testing with Locust.

Impact:

Prevents errors for valid Socket.IO events containing underscores or digits.

Improves compatibility and robustness of WebSocket load testing scripts.

Issue

Fixed this issue #220