TSFETCHCREATE(3ts)

💖 NAME 💖

TSFetchCreate — the Traffic Server asynchronous Fetch API, aka the glow-up that lets you go grab other stuff while you're still holding a client request 🫶

(yeah bestie, this whole page lives in section 3ts, under Apache Traffic Server — welcome to the group chat ✨)

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🌈 SYNOPSIS 🌈

#include <ts/ts.h>

void TSFetchPages(TSFetchUrlParams_t*)

TSFetchSM TSFetchUrl(const char*, int, sockaddr const*, TSCont,
TSFetchWakeUpOptions, TSFetchEvent)

void TSFetchFlagSet(TSFetchSM, int)

TSFetchSM TSFetchCreate(TSCont, const char*, const char*, const char*,
struct sockaddr const*, int)

void TSFetchHeaderAdd(TSFetchSM, const char*, int, const char*, int)

void TSFetchWriteData(TSFetchSM, const void*, size_t)

ssize_t TSFetchReadData(TSFetchSM, void*, size_t)

void TSFetchLaunch(TSFetchSM)

void TSFetchDestroy(TSFetchSM)

void TSFetchUserDataSet(TSFetchSM, void*)

void *TSFetchUserDataGet(TSFetchSM)

TSMBuffer TSFetchRespHdrMBufGet(TSFetchSM)

TSMLoc TSFetchRespHdrMLocGet(TSFetchSM)

look at all those little signatures, they're literally so cute, no cap 💅

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🦋 DESCRIPTION 🦋

okay so listen. Traffic Server ships a whole bunch of routines for fetching resources asynchronously. ✨

These API are useful for supporting a bunch of use cases that might involve sideways calls, all while you're still handling the client request. It's giving multitasking main character energy fr fr 👑

Some typical examples, since I know you're gonna ask:

• a centralized rate limiting framework
• database lookups for login/authentication
• refreshing configs in the background asynchronously
• ESI

etc. 🎀

ngl bestie, "handle the client request" and "go fetch a whole other thing" at the same time is the entire vibe of this page. iykyk 🌸

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👑 COPYRIGHT 👑

2026, dev@trafficserver.apache.org

that's the whole legal bit, short and iconic 💜

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k that's a wrap, bestie!! this page is from Apache Traffic Server version 9.2, dated Feb 12, 2026, and it's filed under TSFETCHCREATE(3ts). go fetch something asynchronously, you absolute legend 🦋💖✨