wtf is netshape-manager?

NetShape Manager is a command line tool for Linux servers, aimed at people who run a relay or proxy server, often in front of media servers like Emby or Jellyfin, over long distance internet connections with high latency. It tunes the server's networking settings automatically so that video streams have fewer stutters and dropped connections. After installing it with a single script, you run the netshape command to open an interactive menu. The tool detects your server's CPU, memory, network interface, kernel version, and whether it supports a congestion control method called BBR, then suggests safe TCP settings based on that hardware and on the rough latency between your server and your location. Its core idea is two layers of speed limiting. Each individual streaming connection is capped just under the home internet speed of the person watching, for example 430 or 450 megabits for a 500 megabit connection, so a single stream cannot overload the international link and cause a flood of retransmissions. Separately, the whole server's total outgoing traffic is capped according to the VPS provider's port speed, so the physical connection itself is never overwhelmed. This lets several people on different home connections each get their full speed at once without interfering with each other. If the server also runs Nginx as a reverse proxy for Emby, the tool can generate a configuration snippet that removes Nginx's own rate limits for Emby traffic, and can check the existing configuration for rate limiting settings that might be causing slowdowns. The tool includes commands to check status, diagnose problems, adjust settings without reinstalling, temporarily turn off the rate limits, and fully uninstall itself, restoring the previous network queue settings. It also includes a small self-test script that does not touch the system. It works only on Linux systems using systemd, needs root access, and depends on common tools like bash, ip, tc, and sysctl. It is released under the MIT license.