Protoc...:Frame(3pm)

✨ NOTES ✨

okay bestie, so this page is Protoc...:Frame(3pm) 💖 it lives in the User Contributed Perl Documentation, and honestly? it's just one big vibe check for HTTP/2 frames — which frame types are allowed to carry which flags, and whether they get to have a stream id. that's the whole thing. no cap. 🦋

---

🎀 Frame Types vs Flags and Stream ID 🎀

the original says it plain: this table represents possible combinations of frame types and flags. and the last column? that's the Stream ID of frame types, where:

• x — means sid >= 1 👑
• 0 — means sid = 0 🌸

so first, the flag columns and their values, because you're gonna need these keys to read anything below:

• END_STREAM — 0x1
• ACK — 0x1
• END_HEADERS — 0x4
• PADDED — 0x8
• PRIORITY — 0x20
• and then a stream id (a value), which is that last column 🫶

yes, END_STREAM and ACK are both 0x1. that's not a typo, that's just how the table is, bestie. different flags, same bit. iconic behavior fr fr.

now the main event — every frame type, one by one, nothing skipped 💅

• DATA 🍓 — flags it uses: END_STREAM (0x1), PADDED (0x8). flags it does not use: ACK (0x1), END_HEADERS (0x4), PRIORITY (0x20). stream id: x (so sid >= 1).
• HEADERS ✨ — flags it uses: END_STREAM (0x1), END_HEADERS (0x4), PADDED (0x8), PRIORITY (0x20). flags it does not use: ACK (0x1). stream id: x (so sid >= 1). look at her, collecting flags like pokémon.
• PRIORITY 👑 — flags it uses: none of them. stream id: x (so sid >= 1).
• RST_STREAM 💀 — flags it uses: none of them. stream id: x (so sid >= 1).
• SETTINGS 🎀 — flags it uses: ACK (0x1). flags it does not use: END_STREAM (0x1), END_HEADERS (0x4), PADDED (0x8), PRIORITY (0x20). stream id: 0 (so sid = 0).
• PUSH_PROMISE 🌈 — flags it uses: END_HEADERS (0x4), PADDED (0x8). flags it does not use: END_STREAM (0x1), ACK (0x1), PRIORITY (0x20). stream id: x (so sid >= 1).
• PING 🦋 — flags it uses: ACK (0x1). flags it does not use: END_STREAM (0x1), END_HEADERS (0x4), PADDED (0x8), PRIORITY (0x20). stream id: 0 (so sid = 0).
• GOAWAY 🙈 — flags it uses: none of them. stream id: 0 (so sid = 0).
• WINDOW_UPDATE ⭐ — flags it uses: none of them. stream id: 0/x — yeah, either one, she's flexible like that.
• CONTINUATION 🧚 — flags it uses: END_HEADERS (0x4), PADDED (0x8). flags it does not use: END_STREAM (0x1), ACK (0x1), PRIORITY (0x20). stream id: x (so sid >= 1).

---

and that's the whole table, translated but never diluted 💜 every x, every 0, every 0/x, every hex value — all still exactly where they belong.

quick recap of the legend because repetition is self-care: x = sid >= 1, 0 = sid = 0. you got this. ✨

okay that's a wrap, my love 🫶 this was Protoc...:Frame(3pm) from the User Contributed Perl Documentation, sitting at perl v5.42.3, dated 2026-09-04. periodt. 💅