Use a pipe to enable non-blocking IO reads #1
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Description of changes:
See: alextwoods/aws-crt-python#1 for the required CRT binding changes.
Uses a pipe to coordinate non-blocking IO reads. The async task in python writes chunks from the requeset body to the write_fd of a pipe. The CRT's C code (running in its own internally managed event loop thread) will check for the
read_fdattribute, and if available will use a blocking OS read without requiring the GIL.By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.