连接iOS真机频繁掉线

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**(重要！问题分类)**

* 测试开发环境AirtestIDE使用问题（本软件） -> 这里

**描述问题bug**
连接iOS真机频繁掉线
**截屏**
强烈建议带上截图，包括IDE本身的截图和后面的黑窗口的报错信息的截图（尽量完整）。

**复现步骤**
1. 执行一个需要重复操作的脚本，如200次点击，一定会出现连接失败

**预期效果**
正常执行

**python 版本:** `python3.7`

**操作系统:** `macOS 10.14.4`

**设备:**
- 型号: iPhone X
- 系统: 12.3.1

**其他相关环境信息**
1.必现，只要持续跑用例，一定会复现
2.报错之后再次执行脚本可以直接执行，不需要重新连接
3.错误日志：
FAILED (errors=1)
ERROR: runTest (__main__.CustomCase)
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Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 603, in urlopen
chunked=chunked)
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 387, in _make_request
six.raise_from(e, None)
File "", line 2, in raise_from
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 383, in _make_request
httplib_response = conn.getresponse()
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/client.py", line 1321, in getresponse
response.begin()
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/client.py", line 296, in begin
version, status, reason = self._read_status()
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/client.py", line 257, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socket.py", line 589, in readinto
return self._sock.recv_into(b)
ConnectionResetError: [Errno 54] Connection reset by peer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 641, in urlopen
_stacktrace=sys.exc_info()[2])
File "/usr/local/lib/python3.7/site-packages/urllib3/util/retry.py", line 368, in increment
raise six.reraise(type(error), error, _stacktrace)
File "/usr/local/lib/python3.7/site-packages/urllib3/packages/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 603, in urlopen
chunked=chunked)
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 387, in _make_request
six.raise_from(e, None)
File "", line 2, in raise_from
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 383, in _make_request
httplib_response = conn.getresponse()
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/client.py", line 1321, in getresponse
response.begin()
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/client.py", line 296, in begin
version, status, reason = self._read_status()
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/client.py", line 257, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socket.py", line 589, in readinto
return self._sock.recv_into(b)
urllib3.exceptions.ProtocolError: ('Connection aborted.', ConnectionResetError(54, 'Connection reset by peer'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/airtest/cli/runner.py", line 65, in runTest
six.reraise(*sys.exc_info())
File "/usr/local/lib/python3.7/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.7/site-packages/airtest/cli/runner.py", line 61, in runTest
exec(compile(code.encode("utf-8"), pyfilepath, 'exec'), self.scope)
File "/Users/wangxiaonan/Work/AutoTest/AirTest/case1.air/case1.py", line 12, in
touch(Template(r"tpl1562844441045.png", record_pos=(-0.206, 0.836), resolution=(1125, 2436)))
File "/usr/local/lib/python3.7/site-packages/airtest/utils/logwraper.py", line 72, in wrapper
res = f(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/airtest/core/api.py", line 257, in touch
pos = loop_find(v, timeout=ST.FIND_TIMEOUT)
File "/usr/local/lib/python3.7/site-packages/airtest/utils/logwraper.py", line 72, in wrapper
res = f(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/airtest/core/cv.py", line 59, in loop_find
screen = G.DEVICE.snapshot(filename=None)
File "/usr/local/lib/python3.7/site-packages/airtest/core/ios/ios.py", line 159, in snapshot
data = self._neo_wda_screenshot() # wda 截图不用考虑朝向
File "/usr/local/lib/python3.7/site-packages/airtest/core/ios/ios.py", line 143, in _neo_wda_screenshot
value = self.driver.http.get('screenshot').value
File "/usr/local/lib/python3.7/site-packages/wda/__init__.py", line 129, in fetch
return self._fetch_no_alert(method, url, data)
File "/usr/local/lib/python3.7/site-packages/wda/__init__.py", line 135, in _fetch_no_alert
return httpdo(target_url, method, data)
File "/usr/local/lib/python3.7/site-packages/wda/__init__.py", line 95, in httpdo
response = requests.request(method, url, json=data, timeout=HTTP_TIMEOUT)
File "/usr/local/lib/python3.7/site-packages/requests/api.py", line 60, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/adapters.py", line 498, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', ConnectionResetError(54, 'Connection reset by peer'))

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[Finished]

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