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    • 3
      3315954156
      最后由 编辑

      ros2 run demo_python_topic novel_pub_node
      Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 169, in _new_conn
      conn = connection.create_connection(
      File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 96, in create_connection
      raise err
      File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 86, in create_connection
      sock.connect(sa)
      ConnectionRefusedError: [Errno 111] Connection refused

      During handling of the above exception, another exception occurred:

      Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 700, in urlopen
      httplib_response = self._make_request(
      File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 395, in _make_request
      conn.request(method, url, **httplib_request_kw)
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 234, in request
      super(HTTPConnection, self).request(method, url, body=body, headers=headers)
      File "/usr/lib/python3.10/http/client.py", line 1283, in request
      self._send_request(method, url, body, headers, encode_chunked)
      File "/usr/lib/python3.10/http/client.py", line 1329, in _send_request
      self.endheaders(body, encode_chunked=encode_chunked)
      File "/usr/lib/python3.10/http/client.py", line 1278, in endheaders
      self._send_output(message_body, encode_chunked=encode_chunked)
      File "/usr/lib/python3.10/http/client.py", line 1038, in _send_output
      self.send(msg)
      File "/usr/lib/python3.10/http/client.py", line 976, in send
      self.connect()
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 200, in connect
      conn = self._new_conn()
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 181, in _new_conn
      raise NewConnectionError(
      urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x714dd93e5f90>: Failed to establish a new connection: [Errno 111] Connection refused

      During handling of the above exception, another exception occurred:

      Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/requests/adapters.py", line 439, in send
      resp = conn.urlopen(
      File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 756, in urlopen
      retries = retries.increment(
      File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 576, in increment
      raise MaxRetryError(_pool, url, error or ResponseError(cause))
      urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /novel1.txt (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x714dd93e5f90>: Failed to establish a new connection: [Errno 111] Connection refused'))

      During handling of the above exception, another exception occurred:

      Traceback (most recent call last):
      File "/home/zhaoye/chapt3/topic_ws/install/demo_python_topic/lib/demo_python_topic/novel_pub_node", line 33, in <module>
      sys.exit(load_entry_point('demo-python-topic==0.0.0', 'console_scripts', 'novel_pub_node')())
      File "/home/zhaoye/chapt3/topic_ws/install/demo_python_topic/lib/python3.10/site-packages/demo_python_topic/novel_pub_node.py", line 32, in main
      node.download_novel('http://localhost:8000/novel1.txt')
      File "/home/zhaoye/chapt3/topic_ws/install/demo_python_topic/lib/python3.10/site-packages/demo_python_topic/novel_pub_node.py", line 16, in download_novel
      response = requests.get(url)
      File "/usr/lib/python3/dist-packages/requests/api.py", line 76, in get
      return request('get', url, params=params, **kwargs)
      File "/usr/lib/python3/dist-packages/requests/api.py", line 61, in request
      return session.request(method=method, url=url, **kwargs)
      File "/usr/lib/python3/dist-packages/requests/sessions.py", line 544, in request
      resp = self.send(prep, **send_kwargs)
      File "/usr/lib/python3/dist-packages/requests/sessions.py", line 657, in send
      r = adapter.send(request, **kwargs)
      File "/usr/lib/python3/dist-packages/requests/adapters.py", line 516, in send
      raise ConnectionError(e, request=request)
      requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /novel1.txt (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x714dd93e5f90>: Failed to establish a new connection: [Errno 111] Connection refused'))
      [ros2run]: Process exited with failure 1
      zhaoye@zhaoye:~/chapt3/topic_ws$ ros2 run demo_python_topic novel_pub_node
      Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 169, in _new_conn
      conn = connection.create_connection(
      File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 96, in create_connection
      raise err
      File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 86, in create_connection
      sock.connect(sa)
      ConnectionRefusedError: [Errno 111] Connection refused

      During handling of the above exception, another exception occurred:

      Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 700, in urlopen
      httplib_response = self._make_request(
      File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 395, in _make_request
      conn.request(method, url, **httplib_request_kw)
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 234, in request
      super(HTTPConnection, self).request(method, url, body=body, headers=headers)
      File "/usr/lib/python3.10/http/client.py", line 1283, in request
      self._send_request(method, url, body, headers, encode_chunked)
      File "/usr/lib/python3.10/http/client.py", line 1329, in _send_request
      self.endheaders(body, encode_chunked=encode_chunked)
      File "/usr/lib/python3.10/http/client.py", line 1278, in endheaders
      self._send_output(message_body, encode_chunked=encode_chunked)
      File "/usr/lib/python3.10/http/client.py", line 1038, in _send_output
      self.send(msg)
      File "/usr/lib/python3.10/http/client.py", line 976, in send
      self.connect()
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 200, in connect
      conn = self._new_conn()
      File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 181, in _new_conn
      raise NewConnectionError(
      urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7c921f2adf90>: Failed to establish a new connection: [Errno 111] Connection refused

      During handling of the above exception, another exception occurred:

      Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/requests/adapters.py", line 439, in send
      resp = conn.urlopen(
      File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 756, in urlopen
      retries = retries.increment(
      File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 576, in increment
      raise MaxRetryError(_pool, url, error or ResponseError(cause))
      urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /novel1.txt (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7c921f2adf90>: Failed to establish a new connection: [Errno 111] Connection refused'))

      During handling of the above exception, another exception occurred:

      Traceback (most recent call last):
      File "/home/zhaoye/chapt3/topic_ws/install/demo_python_topic/lib/demo_python_topic/novel_pub_node", line 33, in <module>
      sys.exit(load_entry_point('demo-python-topic==0.0.0', 'console_scripts', 'novel_pub_node')())
      File "/home/zhaoye/chapt3/topic_ws/install/demo_python_topic/lib/python3.10/site-packages/demo_python_topic/novel_pub_node.py", line 32, in main
      node.download_novel('http://localhost:8000/novel1.txt')
      File "/home/zhaoye/chapt3/topic_ws/install/demo_python_topic/lib/python3.10/site-packages/demo_python_topic/novel_pub_node.py", line 16, in download_novel
      response = requests.get(url)
      File "/usr/lib/python3/dist-packages/requests/api.py", line 76, in get
      return request('get', url, params=params, **kwargs)
      File "/usr/lib/python3/dist-packages/requests/api.py", line 61, in request
      return session.request(method=method, url=url, **kwargs)
      File "/usr/lib/python3/dist-packages/requests/sessions.py", line 544, in request
      resp = self.send(prep, **send_kwargs)
      File "/usr/lib/python3/dist-packages/requests/sessions.py", line 657, in send
      r = adapter.send(request, **kwargs)
      File "/usr/lib/python3/dist-packages/requests/adapters.py", line 516, in send
      raise ConnectionError(e, request=request)
      requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /novel1.txt (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7c921f2adf90>: Failed to establish a new connection: [Errno 111] Connection refused'))
      [ros2run]: Process exited with failure 1

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