Bun integration on subscription (Query and Mutation Works, but not Subscription)

[HuakunShen]

I was using bun to run apollo server and nestjs, it worked fine, both Query and Mutation works normally, but when I start working on subscription it always fails to connect (I was using the apollo playground).

No error was shown, after debugging for a few hours I realized that it's bun runtime that causes the problem.

I followed this tutorial https://www.apollographql.com/docs/apollo-server/data/subscriptions#basic-runnable-example

Subscription works fine when using nodejs or ts-node-esm, but fails as long as I switch to bun.

Reproduction

• https://github.com/apollographql/docs-examples/blob/main/apollo-server/v4/subscriptions-graphql-ws/src/index.ts

bun install
bun src/index.ts

Bun is a really good tool. It allows me to import typescript from other packages without compiling to JS. I can't really switch to nodejs for the project.

I used WebSocket with bun, it works.
There is no error message, so I don't know what's going on. Apollo Server is probably using some API bun doesn't implement.

[HuakunShen]

Here is an issue I made in bun repo.

oven-sh/bun#6905

[trevor-scheer]

I would be happy for this project to support Bun, but I don't have the time to take on this work. I will gladly help with and review a PR which resolves this if you're interested in trying to fix it.

I've outlined my desired approach in another issue:
#7733 (comment)

I'm going to close this as a duplicate of #7733 and specifically mention subscriptions there as well. Which subscription library were you using? That part is likely a separate issue for a separate project.

[github-actions]

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