python应用日志中报错socket.timeout: timed out是什么意思

2021-05-04 22:08:00,848 ERROR /usr/local/lib/python3.7/site-packages/ddtrace/internal/writer.py failed to send traces to Datadog Agent at http://test.data.com:1529
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/ddtrace/internal/writer.py", line 404, in flush_queue
    self._send_payload(encoded, len(enc_traces))
  File "/usr/local/lib/python3.7/site-packages/ddtrace/internal/writer.py", line 304, in _send_payload
    response = self._put(payload, headers)
  File "/usr/local/lib/python3.7/site-packages/ddtrace/internal/writer.py", line 281, in _put
    resp = compat.get_connection_response(conn)
  File "/usr/local/lib/python3.7/site-packages/ddtrace/compat.py", line 214, in get_connection_response
    return conn.getresponse()
  File "/usr/local/lib/python3.7/http/client.py", line 1369, in getresponse
    response.begin()
  File "/usr/local/lib/python3.7/http/client.py", line 310, in begin
    version, status, reason = self._read_status()
  File "/usr/local/lib/python3.7/http/client.py", line 271, in _read_status
    line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
  File "/usr/local/lib/python3.7/socket.py", line 589, in readinto
    return self._sock.recv_into(b)
socket.timeout: timed out