You are viewing a plain text version of this content. The canonical link for it is here.
Posted to httpclient-users@hc.apache.org by Patricia Goldweic <pg...@northwestern.edu> on 2009/06/23 00:12:11 UTC
any suggestions as to what could be wrong here?
Hi,
I've (very) recently started using httpclient (3.1) in my Java app. I've
successfully been able to make connections from a program running on server
A to another program (servlet) running on server B, where B uses Tomcat as
the servlet container, and DIGEST authentication is used to authenticate
between A and B.
Now, here is the problem: within server B, I need to make another http
request to a different servlet running also on B, in the same web
application as A. I used exactly the same code to create the Httpclient
instance, set credentials, and execute a GetMethod that does what I need on
that second servlet on B, that what I've used for connections between A and
B.
However, when this new httpclient connection is created and run within B, I
get a 'No credentials available for DIGEST: '<REALM NAME>&<DOMAIN NAME>'.
One thing to note (perhaps): on the web application on B, the http client
instances are created within a background thread that is part of the web
application.
Does anybody have any suggestions as to what could be causing this
credentials issue? (BTW, I'm printing out my own debugging statements when I
set the credentials in the httpclient instance, right before the call to
executeMethod).
My code is as follows:
private HttpClient getHttpClient() {
HttpClient client = new HttpClient();
List<String> authPrefs = new ArrayList<String>(1);
authPrefs.add(AuthPolicy.DIGEST);
client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY,
authPrefs);
client.getState().setCredentials(new AuthScope("mydomain", -1,
"myrealm"), new UsernamePasswordCredentials("myaccount", "mypassword")));
return client;
}
And I'm using it as follows :
HttpClient client = getHttpClient();
GetMethod get = new GetMethod("someurlWithinB");
get.setDoAuthentication(true);
int responseCode = 0;
String responseString = null;
try {
responseCode = client.executeMethod(get);
... (here I check the response code and find '401' )
} catch (Exception)
...
}
-Patricia
RE: any suggestions as to what could be wrong here?
Posted by Patricia Goldweic <pg...@northwestern.edu>.
I think that you were right, Oleg. The problem was that while doing the
connection within B itself, the hostname was including a port number, and
not otherwise :-(. Thanks so much for helping debug this!
-Patricia
> -----Original Message-----
> From: Oleg Kalnichevski [mailto:olegk@apache.org]
> Sent: Wednesday, June 24, 2009 9:48 AM
> To: HttpClient User Discussion
> Subject: Re: any suggestions as to what could be wrong here?
>
> On Wed, Jun 24, 2009 at 09:45:10AM -0500, Patricia Goldweic wrote:
> > I'm afraid I AM using the hostname already - as extracted with
> > URL.getHost()- (my use of "mydomain" in my code below was actually
> > misleading).
> > Essentially, I have no trouble using the exact same
> code/credentials
> > to communicate from server A to server B, but it fails only when
> > communicate from B to itself (that is, from one servlet in
> B, to another servlet in B).
> > -Patricia
> >
>
> I still suspect credentials cannot be found because the
> hostname of host B and that of the AuthScope do not match.
>
> Oleg
>
> >
> > > -----Original Message-----
> > > From: Oleg Kalnichevski [mailto:olegk@apache.org]
> > > Sent: Wednesday, June 24, 2009 7:47 AM
> > > To: HttpClient User Discussion
> > > Subject: Re: any suggestions as to what could be wrong here?
> > >
> > > On Mon, Jun 22, 2009 at 05:12:11PM -0500, Patricia Goldweic wrote:
> > > > Hi,
> > > > I've (very) recently started using httpclient (3.1) in
> my Java app.
> > > > I've successfully been able to make connections from a
> > > program running
> > > > on server A to another program (servlet) running on server
> > > B, where B
> > > > uses Tomcat as the servlet container, and DIGEST
> authentication is
> > > > used to authenticate between A and B.
> > > > Now, here is the problem: within server B, I need to make
> > > another http
> > > > request to a different servlet running also on B, in
> the same web
> > > > application as A. I used exactly the same code to create the
> > > > Httpclient instance, set credentials, and execute a
> GetMethod that
> > > > does what I need on that second servlet on B, that what
> > > I've used for
> > > > connections between A and B.
> > > > However, when this new httpclient connection is created and
> > > run within
> > > > B, I get a 'No credentials available for DIGEST: '<REALM
> > > NAME>&<DOMAIN NAME>'.
> > > > One thing to note (perhaps): on the web application on
> B, the http
> > > > client instances are created within a background thread
> > > that is part
> > > > of the web application.
> > > >
> > > > Does anybody have any suggestions as to what could be
> causing this
> > > > credentials issue? (BTW, I'm printing out my own debugging
> > > statements
> > > > when I set the credentials in the httpclient instance, right
> > > > before the call to executeMethod).
> > > > My code is as follows:
> > > >
> > > > private HttpClient getHttpClient() {
> > > > HttpClient client = new HttpClient();
> > > > List<String> authPrefs = new ArrayList<String>(1);
> > > > authPrefs.add(AuthPolicy.DIGEST);
> > > >
> > > > client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY,
> > > > authPrefs);
> > > > client.getState().setCredentials(new
> AuthScope("mydomain", -1,
> > >
> > > Patricia,
> > >
> > > The first parameter of AuthScope is expected to be a
> hostname, not a
> > > domain name.
> > >
> > > Hope this helps
> > >
> > > Oleg
> > >
> > >
> > > > "myrealm"), new UsernamePasswordCredentials("myaccount",
> > > "mypassword")));
> > > > return client;
> > > > }
> > > >
> > > > And I'm using it as follows :
> > > >
> > > > HttpClient client = getHttpClient(); GetMethod get = new
> > > > GetMethod("someurlWithinB"); get.setDoAuthentication(true); int
> > > > responseCode = 0; String responseString = null; try {
> > > > responseCode = client.executeMethod(get);
> > > > ... (here I check the response code and find '401' )
> > > > } catch (Exception)
> > > > ...
> > > > }
> > > >
> > > >
> > > > -Patricia
> > >
> > >
> --------------------------------------------------------------------
> > > - To unsubscribe, e-mail:
> httpclient-users-unsubscribe@hc.apache.org
> > > For additional commands, e-mail:
> httpclient-users-help@hc.apache.org
> > >
> >
> >
> >
> >
> ---------------------------------------------------------------------
> > To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> > For additional commands, e-mail: httpclient-users-help@hc.apache.org
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> For additional commands, e-mail: httpclient-users-help@hc.apache.org
>
---------------------------------------------------------------------
To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org
Re: any suggestions as to what could be wrong here?
Posted by Oleg Kalnichevski <ol...@apache.org>.
On Wed, Jun 24, 2009 at 09:45:10AM -0500, Patricia Goldweic wrote:
> I'm afraid I AM using the hostname already - as extracted with
> URL.getHost()- (my use of "mydomain" in my code below was actually
> misleading).
> Essentially, I have no trouble using the exact same code/credentials to
> communicate from server A to server B, but it fails only when communicate
> from B to itself (that is, from one servlet in B, to another servlet in B).
> -Patricia
>
I still suspect credentials cannot be found because the hostname of host B and
that of the AuthScope do not match.
Oleg
>
> > -----Original Message-----
> > From: Oleg Kalnichevski [mailto:olegk@apache.org]
> > Sent: Wednesday, June 24, 2009 7:47 AM
> > To: HttpClient User Discussion
> > Subject: Re: any suggestions as to what could be wrong here?
> >
> > On Mon, Jun 22, 2009 at 05:12:11PM -0500, Patricia Goldweic wrote:
> > > Hi,
> > > I've (very) recently started using httpclient (3.1) in my Java app.
> > > I've successfully been able to make connections from a
> > program running
> > > on server A to another program (servlet) running on server
> > B, where B
> > > uses Tomcat as the servlet container, and DIGEST authentication is
> > > used to authenticate between A and B.
> > > Now, here is the problem: within server B, I need to make
> > another http
> > > request to a different servlet running also on B, in the same web
> > > application as A. I used exactly the same code to create the
> > > Httpclient instance, set credentials, and execute a GetMethod that
> > > does what I need on that second servlet on B, that what
> > I've used for
> > > connections between A and B.
> > > However, when this new httpclient connection is created and
> > run within
> > > B, I get a 'No credentials available for DIGEST: '<REALM
> > NAME>&<DOMAIN NAME>'.
> > > One thing to note (perhaps): on the web application on B, the http
> > > client instances are created within a background thread
> > that is part
> > > of the web application.
> > >
> > > Does anybody have any suggestions as to what could be causing this
> > > credentials issue? (BTW, I'm printing out my own debugging
> > statements
> > > when I set the credentials in the httpclient instance, right before
> > > the call to executeMethod).
> > > My code is as follows:
> > >
> > > private HttpClient getHttpClient() {
> > > HttpClient client = new HttpClient();
> > > List<String> authPrefs = new ArrayList<String>(1);
> > > authPrefs.add(AuthPolicy.DIGEST);
> > > client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY,
> > > authPrefs);
> > > client.getState().setCredentials(new AuthScope("mydomain", -1,
> >
> > Patricia,
> >
> > The first parameter of AuthScope is expected to be a
> > hostname, not a domain name.
> >
> > Hope this helps
> >
> > Oleg
> >
> >
> > > "myrealm"), new UsernamePasswordCredentials("myaccount",
> > "mypassword")));
> > > return client;
> > > }
> > >
> > > And I'm using it as follows :
> > >
> > > HttpClient client = getHttpClient();
> > > GetMethod get = new GetMethod("someurlWithinB");
> > > get.setDoAuthentication(true); int responseCode = 0; String
> > > responseString = null; try {
> > > responseCode = client.executeMethod(get);
> > > ... (here I check the response code and find '401' )
> > > } catch (Exception)
> > > ...
> > > }
> > >
> > >
> > > -Patricia
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> > For additional commands, e-mail: httpclient-users-help@hc.apache.org
> >
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> For additional commands, e-mail: httpclient-users-help@hc.apache.org
>
---------------------------------------------------------------------
To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org
RE: any suggestions as to what could be wrong here?
Posted by Patricia Goldweic <pg...@northwestern.edu>.
I'm afraid I AM using the hostname already - as extracted with
URL.getHost()- (my use of "mydomain" in my code below was actually
misleading).
Essentially, I have no trouble using the exact same code/credentials to
communicate from server A to server B, but it fails only when communicate
from B to itself (that is, from one servlet in B, to another servlet in B).
-Patricia
> -----Original Message-----
> From: Oleg Kalnichevski [mailto:olegk@apache.org]
> Sent: Wednesday, June 24, 2009 7:47 AM
> To: HttpClient User Discussion
> Subject: Re: any suggestions as to what could be wrong here?
>
> On Mon, Jun 22, 2009 at 05:12:11PM -0500, Patricia Goldweic wrote:
> > Hi,
> > I've (very) recently started using httpclient (3.1) in my Java app.
> > I've successfully been able to make connections from a
> program running
> > on server A to another program (servlet) running on server
> B, where B
> > uses Tomcat as the servlet container, and DIGEST authentication is
> > used to authenticate between A and B.
> > Now, here is the problem: within server B, I need to make
> another http
> > request to a different servlet running also on B, in the same web
> > application as A. I used exactly the same code to create the
> > Httpclient instance, set credentials, and execute a GetMethod that
> > does what I need on that second servlet on B, that what
> I've used for
> > connections between A and B.
> > However, when this new httpclient connection is created and
> run within
> > B, I get a 'No credentials available for DIGEST: '<REALM
> NAME>&<DOMAIN NAME>'.
> > One thing to note (perhaps): on the web application on B, the http
> > client instances are created within a background thread
> that is part
> > of the web application.
> >
> > Does anybody have any suggestions as to what could be causing this
> > credentials issue? (BTW, I'm printing out my own debugging
> statements
> > when I set the credentials in the httpclient instance, right before
> > the call to executeMethod).
> > My code is as follows:
> >
> > private HttpClient getHttpClient() {
> > HttpClient client = new HttpClient();
> > List<String> authPrefs = new ArrayList<String>(1);
> > authPrefs.add(AuthPolicy.DIGEST);
> > client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY,
> > authPrefs);
> > client.getState().setCredentials(new AuthScope("mydomain", -1,
>
> Patricia,
>
> The first parameter of AuthScope is expected to be a
> hostname, not a domain name.
>
> Hope this helps
>
> Oleg
>
>
> > "myrealm"), new UsernamePasswordCredentials("myaccount",
> "mypassword")));
> > return client;
> > }
> >
> > And I'm using it as follows :
> >
> > HttpClient client = getHttpClient();
> > GetMethod get = new GetMethod("someurlWithinB");
> > get.setDoAuthentication(true); int responseCode = 0; String
> > responseString = null; try {
> > responseCode = client.executeMethod(get);
> > ... (here I check the response code and find '401' )
> > } catch (Exception)
> > ...
> > }
> >
> >
> > -Patricia
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> For additional commands, e-mail: httpclient-users-help@hc.apache.org
>
---------------------------------------------------------------------
To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org
Re: any suggestions as to what could be wrong here?
Posted by Oleg Kalnichevski <ol...@apache.org>.
On Mon, Jun 22, 2009 at 05:12:11PM -0500, Patricia Goldweic wrote:
> Hi,
> I've (very) recently started using httpclient (3.1) in my Java app. I've
> successfully been able to make connections from a program running on server
> A to another program (servlet) running on server B, where B uses Tomcat as
> the servlet container, and DIGEST authentication is used to authenticate
> between A and B.
> Now, here is the problem: within server B, I need to make another http
> request to a different servlet running also on B, in the same web
> application as A. I used exactly the same code to create the Httpclient
> instance, set credentials, and execute a GetMethod that does what I need on
> that second servlet on B, that what I've used for connections between A and
> B.
> However, when this new httpclient connection is created and run within B, I
> get a 'No credentials available for DIGEST: '<REALM NAME>&<DOMAIN NAME>'.
> One thing to note (perhaps): on the web application on B, the http client
> instances are created within a background thread that is part of the web
> application.
>
> Does anybody have any suggestions as to what could be causing this
> credentials issue? (BTW, I'm printing out my own debugging statements when I
> set the credentials in the httpclient instance, right before the call to
> executeMethod).
> My code is as follows:
>
> private HttpClient getHttpClient() {
> HttpClient client = new HttpClient();
> List<String> authPrefs = new ArrayList<String>(1);
> authPrefs.add(AuthPolicy.DIGEST);
> client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY,
> authPrefs);
> client.getState().setCredentials(new AuthScope("mydomain", -1,
Patricia,
The first parameter of AuthScope is expected to be a hostname, not a domain
name.
Hope this helps
Oleg
> "myrealm"), new UsernamePasswordCredentials("myaccount", "mypassword")));
> return client;
> }
>
> And I'm using it as follows :
>
> HttpClient client = getHttpClient();
> GetMethod get = new GetMethod("someurlWithinB");
> get.setDoAuthentication(true);
> int responseCode = 0;
> String responseString = null;
> try {
> responseCode = client.executeMethod(get);
> ... (here I check the response code and find '401' )
> } catch (Exception)
> ...
> }
>
>
> -Patricia
---------------------------------------------------------------------
To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org