udp-echo-server(1)

💖 udp-echo-server — the manual page, but make it cute 💖

okay bestie, welcome to the udp-echo-server(1) page, straight outta the General Commands Manual (that's section 1, for the girlies keeping score). she's simple, she's a vibe, let's get into it ✨

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🌸 NAME 🌸

udp-echo-server — a Simple UDP Echo Server 🦋 (yes, that's the whole name, she's lowkey humble)

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✨ SYNOPSIS ✨

no cap, here's how you call her:

udp-echo-server [-L level | --loglevel level]
                [-Z on|off | --logcolor on|off]
                [-O file | --logfile file]
                [-q | --quiet] [-w | --verbose]
                [-U user|uid | --user user|uid]
                [-A address | --address address]
                [-P port | --port port]
                [-f port | --from-port port] [-t port | --to-port port]
udp-echo-server [-h | --help]
udp-echo-server [-v | --version]

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👑 DESCRIPTION 👑

so udp-echo-server is a simple UDP Echo server. that's it, that's her whole thing 💅 she can be used as an endpoint for HiPerConTracer UDP Ping/Traceroute, which is giving main character energy fr fr.

⚠️ bestie listen. for security reasons, udp-echo-server only responds to source ports >= 1024. why? to avoid the server being used in attacks, like spoofing a packet from another Echo server (port 7) to create a flooding loop 😭 not the drama we want.

also — and this is important — packets from the same port as the listening port are ignored. periodt. 🙈

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🎀 ARGUMENTS 🎀

the following arguments may be provided (there's a lot, but she ate):

• -L level, --loglevel level — sets the minimum logging level to whatever value you hand her: 0=trace, 1=debug, 2=info, 3=warning, 4=error, 5=fatal. pick your fighter ⭐
• -q, --quiet — sets the minimum logging level to 3 (warning). she's in her quiet era 🤫
• -w, --verbose — sets the minimum logging level to 0 (trace). she's telling you everything 🗣️
• -Z on|off, --logcolor on|off — enables (on) or disables (off) the usage of ANSI color escape sequences to colorise the log output according to its level. rainbow logs? iconic 🌈
• -O file, --logfile file — sets a file name for appending the log output to. and heads up: if a file is set, no log output is made to the console. otherwise, all log output will be written to the console. choose one, you can't have both queen 💀
• -U user|uid, --user user|uid — after startup, the server uses the UID and GID of the given user (by name or GID). glow-down into a safer identity, we love to see it 🫶
• -A address, --address address — sets the local address (default: ::). 🌐
• -P port, --port port — sets the local port (default: 7). 🍓
• -f port, --from-port port — sets the first local port of a range (default: 7). first of her name 👑
• -t port, --to-port port — sets the last local port of a range (default: 0; 0 uses the "from" port). cute little callback 🔁
• -h, --help — prints command help. when in doubt, ask her 💖
• -v, --version — prints program version. she's gotta flex 🧚

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💀 EXIT STATUS 💀

the udp-echo-server tool exits with 0 on success, and >0 in case of an error. so if you get a 0, she's thriving. anything bigger? something's giving error energy, check on her 😭

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🌟 EXAMPLES 🌟

copy-paste royalty, go off:

udp-echo-server

udp-echo-server --address 192.168.1.1 --port 7777

udp-echo-server --address 3ffe::1:2:3 --port 7777

udp-echo-server --address :: --user nornetpp

udp-echo-server --address 3ffe::1:2:3 --from-port 10000 --to-port 10999

udp-echo-server --version

udp-echo-server -h

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📝 NOTES 📝

this program is part of HiPerConTracer ✨ the latest version of HiPerConTracer can be found on the HiPerConTracer Homepage at HiPerConTracer Homepage: https://www.nntb.no/~dreibh/hipercontracer/. iykyk 🔥

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🫶 AUTHORS 🫶

Thomas Dreibholz, Homepage: https://www.nntb.no/~dreibh — thank you for your service king 👑

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and that's the whole page bestie!! this cutie is udp-echo-server from the udp-echo-server manual, dated May 26, 2026. now go echo some packets, slay, and stay safe out there 💖🎀🦋✨