Sparqlwrapper Http Error 401: Unauthorized

I secured my SPARQL endpoint via SQL Accounts according to VirtSPARQLProtectSQLDigestAuthentication. Before this operation, I can get the data through the code: from SPARQLWrap

Solution 1:

Well, I found the answer just several minutes after I wrote the problem, which reminds me of RTFSC again.

line 574~581 in Wrapper.py :

elif self.http_auth == DIGEST:
    realm = "SPARQL"
    pwd_mgr = urllib2.HTTPPasswordMgr()
    pwd_mgr.add_password(realm, uri, self.user, self.passwd)
    opener = urllib2.build_opener()
    opener.add_handler(urllib2.HTTPDigestAuthHandler(pwd_mgr))
    urllib2.install_opener(opener)

Besides user and password, there is another varible,realm.(default value is "SPARQL"), but VirtSPARQLProtectSQLDigestAuthentication set the realm as "SPARQL Endpoint".

So the solution is just changing your virtuoso's realm to "SPARQL".