Thanks for the response.
I have changed my code as suggested in
http://hc.apache.org/httpcomponents-client/ntlm.html and now, I just have the
following message:
HTTP/1.1 407 Proxy Authentication Required ( The ISA Server requires
authorization to fulfill the request. Access to the Web Proxy filter is denied.
)
Here is my complete code:
DefaultHttpClienthttpclient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpGet httpget = new HttpGet("targetURL");
AuthScope proxyScope = new AuthScope(proxyHost, proxyPort);
AuthScope targetScope = new AuthScope(targetHost, targetPort);
AuthState proxyAuthState = new AuthState();
proxyAuthState.setAuthScope(proxyScope);
proxyAuthState.setCredentials(new NTCredentials(proxyUser, proxypassword,
localworkstation, Domain)
);localContext.setAttribute(ClientContext.PROXY_AUTH_STATE, proxyAuthState);
AuthState targetAuthState = new AuthState();
targetAuthState.setAuthScope(targetScope);
targetAuthState.setCredentials(new UsernamePasswordCredentials(webSiteUser,
webSitePassword) );
localContext.setAttribute(ClientContext.TARGET_AUTH_STATE, targetAuthState);
HttpHost proxy = new HttpHost(proxyHost, proxyPort);
httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
httpclient.getAuthSchemes().register("ntlm", new NTLMSchemeFactory());
HttpResponse response = null;
HttpHost targetHost = new HttpHost(targetHost, targetPort, "https");
try {
response = httpclient.execute(targetHost, httpget);
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
}
catch(Exception e) {
System.out.println("Exception " + e.toString());
}
Can you please help on this?
Regards
Mallika
-----Original Message-----
From: Oleg Kalnichevski [mailto:[email protected]]
Sent: 26 October 2009 13:36
To: HttpClient User Discussion
Subject: Re: using HttpClient4.0 to retrieve files from a website.
[email protected] wrote:
> Hello,
>
> The document at the mentioned location states that " NTLM is a proprietary
> authentication scheme developed by Microsoft and optimized for Windows
> operating system"
>
> But I am getting the same message even when the code is run on Linux. Should
> I then understand that the proxy I am trying to connect is Windows?
>
The proxy server you are trying to connect supports the following auth
schemes: Kerberos, NTLM, Negotiate and identifies itself as 'The ISA
Server'. And yes, most likely that means MS Windows.
Oleg
> Thanks
> Mallika
>
> -----Original Message-----
> From: Oleg Kalnichevski [mailto:[email protected]]
> Sent: 26 October 2009 12:57
> To: HttpClient User Discussion
> Subject: Re: using HttpClient4.0 to retrieve files from a website.
>
> [email protected] wrote:
>> Hello,
>>
>> After some more search and reading, here is the sample code that I am trying
>> out:
>>
>> HttpClient httpclient = new DefaultHttpClient();
>> HttpContext localContext = new BasicHttpContext();
>> HttpGet httpget = new HttpGet("targetURL");
>>
>> AuthScope proxyScope = new AuthScope(proxyHost, proxyPort);
>> AuthScope targetScope = new AuthScope(targetHost, targetPort);
>>
>> AuthState proxyAuthState = new AuthState();
>> proxyAuthState.setAuthScope(proxyScope);
>> proxyAuthState.setCredentials(new UsernamePasswordCredentials(proxyUser,
>> proxyPassword) );
>> localContext.setAttribute(ClientContext.PROXY_AUTH_STATE, proxyAuthState);
>>
>> AuthState targetAuthState = new AuthState();
>> targetAuthState.setAuthScope(targetScope);
>> targetAuthState.setCredentials(new UsernamePasswordCredentials(webSiteUser,
>> webSitePassword) );
>> localContext.setAttribute(ClientContext.TARGET_AUTH_STATE, targetAuthState);
>>
>> HttpHost proxy = new HttpHost(proxyHost, proxyPort);
>> httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
>>
>> HttpResponse response = null;
>> HttpHost targetHost = new HttpHost(targetHost, targetPort, "https");
>> try {
>> response = httpclient.execute(targetHost, httpget);
>> System.out.println("----------------------------------------");
>> System.out.println(response.getStatusLine());
>> }
>> catch(Exception e) {
>> System.out.println("Exception " + e.toString());
>>
>> }
>>
>> And I get the following output:
>> Oct 26, 2009 12:02:01 PM
>> org.apache.http.impl.client.AbstractAuthenticationHandler selectScheme
>> WARNING: Authentication scheme ntlm not supported
>> Oct 26, 2009 12:02:01 PM org.apache.http.impl.client.DefaultRequestDirector
>> createTunnelToTarget
>> WARNING: Authentication error: Unable to respond to any of these challenges:
>> {kerberos=Proxy-Authenticate: Kerberos, ntlm=Proxy-Authenticate: NTLM,
>> negotiate=Proxy-Authenticate: Negotiate}
>> ----------------------------------------
>> HTTP/1.1 407 Proxy Authentication Required ( The ISA Server requires
>> authorization to fulfill the request. Access to the Web Proxy filter is
>> denied. )
>>
>>
>> Can anyone please tell me whats wrong in this?
>>
>
> http://hc.apache.org/httpcomponents-client/ntlm.html
>
> Oleg
>
>> Regards
>> Mallika
>>
>>
>> From: GUNTURU NAGAMALLIKA (BCS/ITP)
>> Sent: 26 October 2009 09:38
>> To: '[email protected]'
>> Subject: using HttpClient4.0 to retrieve files from a website.
>>
>> Hello,
>>
>> We are trying to use HttpClient 4.0 API to connect to an internet website
>> that requires user authentication to retrieve files. And we connect to the
>> internet through a proxy that also needs a different user credentials.
>>
>> All the samples that I have seen so far, do either proxy authentication or
>> web-site authentication but not both:
>>
>>
>> a) Is the scenario I explained above, achievable using HttpClient? I
>> guess it should be possible, but I am not sure how? Can someone help me with
>> this
>>
>> And for info, the production environment will be on Linux and the
>> development environment is Windows..
>>
>> Thanks and Regards
>> Mallika Gunturu
>>
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