Requests with stream=True MUST be closed or else the connection will
never be returned to the connection pool. Both ContainerApiMixin.attach
and ExecApiMixin.exec_start were leaking in the stream=False case.
exec_start was modified to follow attach for the stream=True case as
that allows the caller to close the stream when done (untested).
Tested with:
# Test exec_run (stream=False) - observe one less leak
make integration-test-py3 file=models_containers_test.py' -k test_exec_run_success -vs -W error::ResourceWarning'
# Test exec_start (stream=True, fully reads from CancellableStream)
make integration-test-py3 file=api_exec_test.py' -k test_execute_command -vs -W error::ResourceWarning'
After this change, one resource leak is removed, the remaining resource
leaks occur because none of the tests call client.close().
Fixes https://github.com/docker/docker-py/issues/1293
(Regression from https://github.com/docker/docker-py/pull/1130)
Cherry-picked from 34e6829dd4
Co-authored-by: Peter Wu <pwu@cloudflare.com>
Co-authored-by: Milas Bowman <milas.bowman@docker.com>
