[issue31022] ERROR: testRegularFile (test.test_socket.SendfileUsingSendTest) random failure on AppVeyor

[STINNER Victor]

New submission from STINNER Victor:

https://ci.appveyor.com/project/python/cpython/build/3.7.0a0.4809

(...)
testNonRegularFile (test.test_socket.SendfileUsingSendTest) ... ok
testOffset (test.test_socket.SendfileUsingSendTest) ... ok
testRegularFile (test.test_socket.SendfileUsingSendTest) ... ERROR
testWithTimeout (test.test_socket.SendfileUsingSendTest) ... ok
testWithTimeoutTriggeredSend (test.test_socket.SendfileUsingSendTest) ... ok
(...)
======================================================================
ERROR: testRegularFile (test.test_socket.SendfileUsingSendTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\projects\cpython\lib\test\test_socket.py", line 5225, in testRegularFile
    data = self.recv_data(conn)
  File "C:\projects\cpython\lib\test\test_socket.py", line 5201, in recv_data
    chunk = conn.recv(self.BUFSIZE)
socket.timeout: timed out
----------------------------------------------------------------------

----------
components: Tests
messages: 299035
nosy: haypo
priority: normal
severity: normal
status: open
title: ERROR: testRegularFile (test.test_socket.SendfileUsingSendTest) random failure on AppVeyor
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue31022>
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