问题
While this issue has been addressed a couple of times in the past at SO and I tried all the suggestions, the problem still remains and I am hoping someone would shine a light on this.
My company set up a neo4j (v2.1.6) graph database at a remote ubuntu server. In order to modify and update data into the server, I am using a python package, py2neo.
The server's endpoint address is http://fake-address.com/db/data and the authentication Id/password are 'fakeId' and 'fakePassWord'.
In order to access the remote database, in my local machine python terminal,
I tried the following:
from py2neo import authenticate, Graph
authenticate("fake-address.com:80", "fakeId", "fakePassWord")
graph = Graph("http://fake-address.com:80/db/data/")
result = graph.cypher.execute("CREATE (a:Color)")
Unfortunately, the above command resulted in the following error message.
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/cypher/core.pyc in execute(self, statement, parameters, **kwparameters)
107 """
108 if self.transaction_uri:
--> 109 tx = CypherTransaction(self.transaction_uri)
110 tx.append(statement, parameters, **kwparameters)
111 results = tx.commit()
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/cypher/core.pyc in __init__(self, uri)
180 self.__commit = None
181 self.__finished = False
--> 182 self.graph = self.__begin.graph
183
184 def __enter__(self):
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/core.pyc in graph(self)
211 :rtype: :class:`.Graph`
212 """
--> 213 return self.__service_root.graph
214
215 @property
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/core.pyc in graph(self)
523 if self.__graph is None:
524 try:
--> 525 uri = self.resource.metadata["data"]
526 except KeyError:
527 if "authentication" in self.resource.metadata:
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/core.pyc in metadata(self)
226 if self.__initial_metadata is not None:
227 return self.__initial_metadata
--> 228 self.get()
229 return self.__last_get_response.content
230
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/core.pyc in get(self, headers, redirect_limit, **kwargs)
271 kwargs.update(cache=True)
272 try:
--> 273 response = self.__base.get(headers=headers, redirect_limit=redirect_limit, **kwargs)
274 except (ClientError, ServerError) as error:
275 if error.status_code == UNAUTHORIZED:
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/packages/httpstream/http.pyc in get(self, if_modified_since, headers, redirect_limit, **kwargs)
964 object from which content can be read
965 """
--> 966 return self.__get_or_head("GET", if_modified_since, headers, redirect_limit, **kwargs)
967
968 def put(self, body=None, headers=None, **kwargs):
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/packages/httpstream/http.pyc in __get_or_head(self, method, if_modified_since, headers, redirect_limit, **kwargs)
941 headers["If-Modified-Since"] = formatdate(datetime_to_timestamp(if_modified_since), usegmt=True)
942 rq = Request(method, self.uri, None, headers)
--> 943 return rq.submit(redirect_limit=redirect_limit, **kwargs)
944
945 def head(self, if_modified_since=None, headers=None, redirect_limit=5, **kwargs):
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/packages/httpstream/http.pyc in submit(self, redirect_limit, **response_kwargs)
431 uri = self.uri
432 while True:
--> 433 http, rs = submit(self.method, uri, self.body, self.headers)
434 status_class = rs.status // 100
435 if status_class == 3:
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2neo/packages/httpstream/http.pyc in submit(method, uri, body, headers)
360 host_port=uri.host_port)
361 else:
--> 362 raise SocketError(code, description, host_port=uri.host_port)
363 else:
364 return http, response
SocketError: Connection refused
Sorry about the long error message and I greatly appreciate any suggestions.
回答1:
The issue has been resolved. The problem must have been in the authentication in py2neo. With the newest version of py2neo (2.0.4), the connection was properly made.
来源：https://stackoverflow.com/questions/28224779/socketerror-connection-refused-using-py2neo-to-a-remote-server