Original report: https://github.com/eventlet/eventlet/issues/249

Explanation is in the comments in the code.

On Travis CI it breaks the build with:

======================================================================
FAIL: test_multiple_readers (tests.greenio_test.TestGreenIoLong)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/travis/build/eventlet/eventlet/tests/__init__.py", line 71, in wrapped
    return func(*a, **kw)
  File "/home/travis/build/eventlet/eventlet/tests/greenio_test.py", line 836, in test_multiple_readers
    assert len(results2) > 0
AssertionError

This reverts commit 4656eadfa5ae1237036a63ad4004dbee4572debf.

Revert "Fix HTTPServer.serve_forever blocking whole process"

This reverts commit 801e7dd65cbd7e6e527457412a75736b5702c9c4.

Original report: https://github.com/eventlet/eventlet/issues/249

Explanation is in the comments in the code.

When a socket timeout was set the sendall-like semantics was resulting
in losing information about sent data and raising socket.timeout exception.

The previous GreenSocket.send() implementation used to call fd.send() in a
loop until all data was sent. The issue would manifest if at least one
fd.send() call succeeded and was followed by a fd.send() call that would
block and a trampoline that timed out. The client code would see
socket.timeout being raised and would rightfully assume that no data was
sent which would be incorrect.

Discussed at https://github.com/eventlet/eventlet/issues/260.

In Python 3.5 subprocess.mswindows no longer exists. It is renamed to
subprocess._mswindows, I decided we don't really have to access that
now "private" attribute in order to know if we're on MS Windows.

On Python 3, GreenFileIO.write() now always write all bytes using a
loop, to have the same behaviour than GreenPipe.write() on Python 2.
Before, the write() could be partial, write less bytes than expected.

On Python 2, GreenPipe.write() doesn't allow partial writes, it
always write all bytes, even if the user requested an unbuffered pipe
(ex: by calling os.fdopen(fd, 'wb', 0)).

Modifying Python 2 to be pedantic and allow partial writes for
unbuffered pipes will likely break a lot of applications. It's
simpler to modify Python 3 GreenFileIO to behave the same than Python
2 GreenPipe.

This commit fixes the docstring which pointed
to the wrong class eventlet.queue.Queue instead
of the one in standard library.