Streaming requests with the fetch API

[guest271314]

Does aio-libs and Python in general support fetch() with ReadableStream set to body https://web.dev/fetch-upload-streaming/#demo?

[webknjaz]

Fetch API is a concept from the JS world. It doesn't really exist as a Python standard. But yes, streaming is supported: https://docs.aiohttp.org/en/v3.7.4.post0/client_quickstart.html#streaming-response-content.

[guest271314]

This is what I have so far

#!/usr/bin/env python3
import aiohttp
import asyncio

chunk_size = 1024
filename = 'test.webm'
async def main():
  with open(filename, 'wb') as fd:
      while True:
          chunk = await resp.content.read(chunk_size)
          if not chunk:
            break
          fd.write(chunk)

loop = asyncio.get_event_loop()
loop.run_until_complete(main())

I attempting to just print the content for now, though yes, also create and write to a file.

Where do I get resp from post such as

  fetch('http://localhost:1234', {
    method: 'POST',
    headers: { 'Content-Type': 'text/plain' },
    body: new ReadableStream({start(c) {c.enqueue(new Uint8Array([1])); c.close();}}),
    allowHTTP1ForStreamingUpload: true,
  })
   .then((r) => r.text())
  .then(console.log)

?

[guest271314]

I am currently on a machine with minimal disk space which prohibits installing npm and nodejs just to run the linked fetch upload streaming demo locally. I do have Python3 installed.