mitmproxy — screenshot of mitmproxy.org

mitmproxy

mitmproxy is an open-source interactive HTTPS man-in-the-middle proxy. It's my go-to for debugging and testing SSL/TLS-protected web traffic, allowing interception, inspection, modification, and replay.

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Questions & Answers

What is mitmproxy?
Mitmproxy is a free and open-source interactive man-in-the-middle proxy for HTTPS. It allows users to intercept, inspect, modify, and replay various web traffic types, including HTTP/1, HTTP/2, HTTP/3, and WebSockets, over SSL/TLS-protected connections.
Who can benefit from using mitmproxy?
Developers, security researchers, and QA testers can benefit from mitmproxy. It serves as a versatile tool for debugging, testing, performing privacy measurements, and conducting penetration tests on web applications and network traffic.
How does mitmproxy compare to browser developer tools?
Mitmproxy offers functionality similar to browser developer tools but extends it to any application or device, not just browser traffic. It uniquely provides features like deep request interception, modification, and replay for non-browser applications, alongside a powerful Python API for advanced scripting.
What are the primary use cases for mitmproxy?
Mitmproxy is primarily used for debugging network issues in applications, testing APIs, analyzing and modifying web traffic for security audits, and privacy measurements. It's ideal when you need to inspect or alter traffic that your browser's developer tools cannot access, such as mobile app or IoT device communications.
What is the Python API for mitmproxy used for?
The Python API for mitmproxy, accessible via `mitmdump`, enables users to write powerful addons and scripts. This API provides full control over the proxy's behavior, allowing for automatic modification of messages, traffic redirection, custom command implementation, and data visualization.