http: couple fetch() receive backpressure to JS body consumption (h1/h2/h3) - #29831

Merged

Jarred-Sumner merged 16 commits into

mainfrom

farm/0a9cea98/h2-window-update-backpressure

Jun 26, 2026

Commits on Jun 25, 2026

fetch: pause receiving the response body once 64 KiB is buffered until JS reads
Jarred-Sumner
committed
54b1b2a
fetch: pause after the first delivered body chunk instead of at a 64K threshold
Jarred-Sumner
committed
879f43c
[autofix.ci] apply automated fixes

autofix-ci[bot]
authored and
Jarred-Sumner
committed
f61afa8
fetch: collapse ignore_data + is_buffering_body into BodyReceiveMode enum
Jarred-Sumner
committed
f281ca1
Update fetch-backpressure.test.ts
Jarred-Sumner
committed
9c2adc1
test: await RSS settle instead of Bun.sleep(200) in stall scripts
Jarred-Sumner
committed
fe70784
fetch: enqueue resume unconditionally on every BodyReceiveMode transition
Jarred-Sumner
committed
be38508
fetch: combine body_receive_mode and receive_paused into one AtomicU8
Jarred-Sumner
committed
4e5171c
http: only resume_receive when mode is no longer Paused
Jarred-Sumner
committed
4eda402
http: gate per-chunk body flush on body_receive_mode being wired
Jarred-Sumner
committed
096ecff
fetch: drop receive backpressure when the body stream has no reader

robobun
authored and
Jarred-Sumner
committed
eeb00c4
http: guard on_writable set_timeout against receive_paused; skip RSS bound on macOS/ASAN

robobun
authored and
Jarred-Sumner
committed
d9d425f
fetch: signal_drained on has_remaining; drop subprocess RSS bound; 1 GiB body for server-stops

robobun
authored and
Jarred-Sumner
committed
becf66c
fetch: transition Paused->AutoPause in on_start_streaming; mirror body_receive_mode gate in single-packet chunked -2 arm

robobun
authored and
Jarred-Sumner
committed
28c505f

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http: couple fetch() receive backpressure to JS body consumption (h1/h2/h3) - #29831

http: couple fetch() receive backpressure to JS body consumption (h1/h2/h3)#29831
Jarred-Sumner merged 16 commits into
mainfrom
farm/0a9cea98/h2-window-update-backpressure

Commits on Jun 25, 2026

fetch: pause receiving the response body once 64 KiB is buffered until JS reads

fetch: pause after the first delivered body chunk instead of at a 64K threshold

[autofix.ci] apply automated fixes

fetch: collapse ignore_data + is_buffering_body into BodyReceiveMode enum

Update fetch-backpressure.test.ts

test: await RSS settle instead of Bun.sleep(200) in stall scripts

fetch: enqueue resume unconditionally on every BodyReceiveMode transition

fetch: combine body_receive_mode and receive_paused into one AtomicU8

http: only resume_receive when mode is no longer Paused

http: gate per-chunk body flush on body_receive_mode being wired

fetch: drop receive backpressure when the body stream has no reader

http: guard on_writable set_timeout against receive_paused; skip RSS bound on macOS/ASAN

fetch: signal_drained on has_remaining; drop subprocess RSS bound; 1 GiB body for server-stops

fetch: transition Paused->AutoPause in on_start_streaming; mirror body_receive_mode gate in single-packet chunked -2 arm

Commits on Jun 26, 2026

fetch: surface a socket error that lands while receive is paused

h2: hold a ref_scope across resume+drain in drain_queued_receive_resumes