PROBE::UDP.SENDMSG(3stap)

💌 PROBE::UDP.SENDMSG — Networking Tapset, bestie edition 💌

okay so this is the udp.sendmsg probe from the SystemTap networking tapset, and it is literally the moment a process yeets a UDP message out into the world. no cap. it's a probe page, so it lives in section 3stap of the manual, and it's giving very much "I watch packets leave and I take notes" energy. 🦋

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✨ NAME ✨

probe::udp.sendmsg — fires whenever a process sends a UDP message 💅

🎀 SYNOPSIS 🎀

probe udp.sendmsg {}

that's it. that's the whole vibe. no arguments, no options, she just goes. 🫶

💖 VALUES 💖

these are all the lil variables you get handed inside the probe body. collect them all like pokémon:

• size — the number of bytes the process sent. how much message, in bytes, fr fr. 🍓
• sock — the network socket the process is using. that's the lil handle the process is holding while it does its thing. ✨
• name — the name of this probe. yes bestie, the probe knows its own name. self-aware icon. 👑
• dport — the UDP destination port. where the message is headed, port-wise. 🎯
• saddr — a string representing the source IP address. where it came from, as a string. 💜
• family — the IP address family. like, what flavour of IP are we even talking about. 🌈
• daddr — a string representing the destination IP address. where it's going, as a string. ✈️
• sport — the UDP source port. the port it's leaving from. not me checking both ports. 🙈

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🌸 CONTEXT 🌸

the process which sent a UDP message. so like, whoever did the sending is the one you're vibing with here. main character energy, honestly. 🧚

⭐ SEE ALSO ⭐

• tapset::udp(3stap) — go read the udp tapset page too, iykyk. 🔥

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lowkey important: every single one of those VALUES is exactly what the tapset gives you — nothing more, nothing less. don't be out here inventing variables, bestie. 😭

and that's the whole page!! this was SystemTap Tapset Reference, and the date on this lil masterpiece is September 2026 — yes, the future, we're iconic like that 💅✨ stay slaying, and remember: udp.sendmsg fires whenever a process sends a UDP message. periodt. 💖