will this support post method?

[kunkanader]

+1

[Olegt0rr]

@systemview2018

Server-Sent-Events was created to GET streamed information from server. If you wanna POST something - use basic HTTP requests

[Dreamsorcerer]

Yeah, I think this needs more information and rationale. I'm assuming you mean to open an SSE connection through a POST request. But, browser's EventSource do not support this, so it seems like an odd thing to want.

Also, it's posed as a question, not an issue, which suggests to me you haven't even tried it. Surely, you can change GET to POST on your endpoint and tell us if it works or not.

[justin-together]

Streaming SSE in response to POST is a very common extension used by:

• OpenAI APIs /completions and /chat/completions
• HuggingFace text-generation-inference /generate_stream
• sglang /generate

And supported by various extended EventSource packages (which also extend EventSource in other ways, like allowing sending Authorization headers):

• launchdarkly's js-eventsource
• sse.js

[Olegt0rr]

Also, it's posed as a question, not an issue, which suggests to me you haven't even tried it. Surely, you can change GET to POST on your endpoint and tell us if it works or not.

aiohttp-sse explicitly restricts all methods except GET on prepare https://github.com/aio-libs/aiohttp-sse/blob/a8ef551ea6185c3a4f52d98f94d6d1911fe1c39d/aiohttp_sse/__init__.py#L62-L63

Default EventSource client can't connect with other methods, but custom clients can (example). We just need to release restrictions and give this responsibility to developer. If they want to use library this way - why not? :)

[Dreamsorcerer]

aiohttp-sse explicitly restricts all methods except GET on prepare

Hmm, it's not clear why that check was added: https://github.com/aio-libs/aiohttp-sse/commit/16f188464771b42751300bbfa736ec85be943545

The commit appears to be completely unrelated. If it's just a case of skipping a check, then I think it'd be fine to support it.