This also has implications with the framing issues seen in https://bugs.launchpad.net/swift/+bug/1709185 and https://github.com/eventlet/eventlet/pull/578; I was just uploading from /dev/zero like

$ curl http://saio:8090/v1/AUTH_test/c2/o -T /dev/zero

and would see some logs like

Jul 21 21:08:37 saio proxy-server: ERROR WSGI: code 400, message Bad request syntax ('\x00\x00...

afterwards -- followed by a badly-formatted traceback coming up out of eventlet:

Jul 21 21:08:37 saio proxy-server: STDERR: Traceback (most recent call last):
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 461, in fire_timers
Jul 21 21:08:37 saio proxy-server: STDERR: timer()
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 59, in __call__
Jul 21 21:08:37 saio proxy-server: STDERR: cb(*args, **kw)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 175, in _do_send
Jul 21 21:08:37 saio proxy-server: STDERR: waiter.switch(result)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 221, in main
Jul 21 21:08:37 saio proxy-server: STDERR: result = function(*args, **kwargs)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py", line 818, in process_request
Jul 21 21:08:37 saio proxy-server: STDERR: proto.__init__(conn_state, self)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/vagrant/swift/swift/common/wsgi.py", line 421, in __init__
Jul 21 21:08:37 saio proxy-server: STDERR: wsgi.HttpProtocol.__init__(self, *args, **kwargs)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py", line 357, in __init__
Jul 21 21:08:37 saio proxy-server: STDERR: self.handle()
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py", line 390, in handle
Jul 21 21:08:37 saio proxy-server: STDERR: self.handle_one_request()
Jul 21 21:08:37 saio proxy-server: STDERR: File "/vagrant/swift/swift/common/wsgi.py", line 541, in handle_one_request
Jul 21 21:08:37 saio proxy-server: STDERR: got = wsgi.HttpProtocol.handle_one_request(self)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py", line 431, in handle_one_request
Jul 21 21:08:37 saio proxy-server: STDERR: if not self.parse_request():
Jul 21 21:08:37 saio proxy-server: STDERR: File "/vagrant/swift/swift/common/wsgi.py", line 482, in parse_request
Jul 21 21:08:37 saio proxy-server: STDERR: return wsgi.HttpProtocol.parse_request(self)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/lib/python2.7/BaseHTTPServer.py", line 286, in parse_request
Jul 21 21:08:37 saio proxy-server: STDERR: self.send_error(400, "Bad request syntax (%r)" % requestline)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/lib/python2.7/BaseHTTPServer.py", line 384, in send_error
Jul 21 21:08:37 saio proxy-server: STDERR: self.wfile.write(content)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/lib/python2.7/socket.py", line 328, in write
Jul 21 21:08:37 saio proxy-server: STDERR: self.flush()
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/lib/python2.7/socket.py", line 307, in flush
Jul 21 21:08:37 saio proxy-server: STDERR: self._sock.sendall(view[write_offset:write_offset+buffer_size])
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 406, in sendall
Jul 21 21:08:37 saio proxy-server: STDERR: tail += self.send(data[tail:], flags)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 397, in send
Jul 21 21:08:37 saio proxy-server: STDERR: return self._send_loop(self.fd.send, data, flags)
Jul 21 21:08:37 saio proxy-server: STDERR: File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 384, in _send_loop
Jul 21 21:08:37 saio proxy-server: STDERR: return send_method(data, *args)
Jul 21 21:08:37 saio proxy-server: STDERR: Connection reset by peer