Lightweight Python asyncio HTTP/1.1 client.
A lightweight Python asyncio HTTP/1.1 client. No additional tasks are created; all code is in a single module; and other than the standard library only a single dependency is required, aiodnsresolver.
The API is streaming-first: for both request and response bodies, asynchronous generators are used.
import os from lowhaio import Pool request, _ = Pool() path = 'my.file' content_length = str(os.stat(path).st_size).encode() async def file_data(): with open(path, 'rb') as file: for chunk in iter(lambda: file.read(16384), b''): yield chunk code, headers, body = await request( b'POST', 'https://example.com/path', params=(), headers=((b'content-length': content_length),), body=file_data(), ) async for chunk in body: print(chunk)
However, there are helper functions
buffered when this isn't required or possible.
from lowhaio import Pool, streamed, buffered request, _ = Pool() content = b'some-data' content_length = b'9' code, headers, body = await request( b'POST', 'https://example.com/path', params=(), headers=((b'content-length': content_length),), body=streamed(content), ) response = await buffered(body)
The scope of the core functions is restricted to:
- (TLS) connection opening, closing and pooling;
- passing and receiving HTTP headers and streaming bodies;
- decoding chunked responses.
This is to make the core behaviour useful to a reasonable range of uses, but to not include what can be added by layer(s) on top. Specifically not included:
- following redirects (planned for a helper function);
- compressing/decompressing requests/responses;
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