11 replies

responseStreamDisconnected errors when making 6+ sub requests in worker

We are using

ctx.waitUntil()

ctx.waitUntil()

API to make sub requests to send metrics/logs to DataDog, and when there are 6 or more requests, the request/response that is being returned is truncated. When looking at real-time worker logs, the outcome field is set to

"outcome": "responseStreamDisconnected",

"outcome": "responseStreamDisconnected",

. There are no other errors that are present.

The format we are using to send metrics is

ctx.waitUntil(async function() { return await fetch(...)});

ctx.waitUntil(async function() { return await fetch(...)});

. The individual requests all function correctly, and I can reproduce this error by enabling any one of them, but if they are all enabled together, an error occured.

We have the following

wrangler.toml

wrangler.toml

config:

compatibility_date = "2025-04-04"
compatibility_flags = [ "nodejs_compat" ]

compatibility_date = "2025-04-04"
compatibility_flags = [ "nodejs_compat" ]

and we're on

"wrangler": "4.7.2"

"wrangler": "4.7.2"

.

We even disabled

ctx.passThruOnException

ctx.passThruOnException

to see if we can surface an error, but nothing shows up.

Cloudflare Developers•10mo ago•

11 replies

neenhouse (chris)

responseStreamDisconnected errors when making 6+ sub requests in worker

We are using

ctx.waitUntil()

ctx.waitUntil()

"outcome": "responseStreamDisconnected",

"outcome": "responseStreamDisconnected",

. There are no other errors that are present.

The format we are using to send metrics is

ctx.waitUntil(async function() { return await fetch(...)});

ctx.waitUntil(async function() { return await fetch(...)});

. The individual requests all function correctly, and I can reproduce this error by enabling any one of them, but if they are all enabled together, an error occured.

We have the following

wrangler.toml

wrangler.toml

config:

compatibility_date = "2025-04-04"
compatibility_flags = [ "nodejs_compat" ]

compatibility_date = "2025-04-04"
compatibility_flags = [ "nodejs_compat" ]

and we're on

"wrangler": "4.7.2"

"wrangler": "4.7.2"

.

We even disabled

ctx.passThruOnException

ctx.passThruOnException

to see if we can surface an error, but nothing shows up.

responseStreamDisconnected errors when making 6+ sub requests in worker

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