What is proxysmith?

Proxysmith is a set of Linux shell scripts that automatically build a ready-to-use configuration file for Xray, a tool people use to route their internet traffic through proxy servers. The problem it solves is that public proxy lists contain thousands of entries, most of which are slow or broken at any given moment. Testing them by hand is not practical, so proxysmith does it for you. The main script runs a three-round elimination process. It starts by downloading roughly 6,000 proxy configs from a public subscription feed, then tests all of them in parallel (50 at a time by default) and drops any that respond too slowly or fail. The survivors go through a second round of testing to confirm the results were not flukes. The remaining configs go through a slower, single-threaded third round. The roughly 12 configs that pass all three rounds get assembled into a final configuration file that Xray can use directly. That file tells Xray to always pick the fastest available proxy at runtime. On first run, the script checks for the tools it needs (including Xray itself and a testing utility called xray-knife) and offers to install anything missing before proceeding. You confirm once and setup runs automatically. A second script, manualconfig, is for situations where you already have a list of proxy addresses you trust and just want them packaged into the same ready-to-deploy format without running the full testing pipeline. The scripts run on Linux and require root access to install dependencies and to deploy the finished configuration file to the Xray system service. The whole testing process takes roughly 20 to 30 minutes at default settings. A daily cron job is the intended usage pattern.