I do implemnet my own connection manager for some other reasons( Mainly cause I
want to set the connection timeout as per host config).
So I do something like this :
HttpConnection getConnectionWithTimeout(HostConfiguration hostConfig,long
timeout)
throws
ConnectionPoolTimeoutException{
HttpConnection httpConnection =
super.getConnectionWithTimeout(hostConfig,timeout);
//get the params from host params- if we didn't set it then set it to
default value.
this.getParams().setConnectionTimeout(hostConfig.getParams().getIntParameter(HttpConstants.HTTP_CONNECTION_TIMEOUT,
HttpConstants.HTTP_DEFAULT_CONNECTION_TIMEOUT));
return httpConnection;
}
But how to close connection while they are returned to pool.
I completely missed this part. What to overload here?
May be something like this ::
Void releaseConnection(httpConnection connection){
connection.close();
super.releaseConnection();
}
Right?
Thanks,
Pankaj Arora
-----Original Message-----
From: Ortwin Glück [mailto:[EMAIL PROTECTED]
Sent: Friday, May 18, 2007 2:57 PM
To: HttpComponents Project
Subject: Re: FW: HttpClient authentication problem.
Pankaj,
With the multithreaded conn manager you can try and set the
"Connection: close" header with each request. This should effectively disable
keep-alive connections. If that doesn't work well with your server, it's
probably best to implement your own connection manager that is thread-safe but
still closes connections when they are returned to the "pool".
Oleg, Roland, do you see other possibilities?
Ortwin
Pankaj Arora wrote:
> Hi Ortwin,
> There is a problem:
>
> In real scenario- I am using a design which looks something like this
>
> Single instance of HttpClient->Single Instance of
> MultithreadedConnectionManger.
>
> Now these are used by multiple threads to acquire instance of
> client(which is created using a single instance of Multithreaded
> connection manager) and calls something like
>
> getSingletonInstance().executeMethod(hostconfig,method,state);
>
> Where
>
> HttpClient getSingletonInstance(){
> //This is implmented as singleton and returns new HttpClient(new
> MultithreadedConnectionManager());
> }
>
> Then each request is executed. Now until I undeploy(clean up) the whole
> application the second thread using the same instance of HttpClient do not
> authenticate for the second request.
>
> I understand that if I were using the SimpleHttpConnectionMAnger I could have
> used the new HttpClient(new SimpleHttpConnectionManager(true)); as suggested
> by you to close the connection and would have worked for me. I have tried
> and it do work for me.
>
>
> But in this case while using multithreaded connection manager I don't know
> what to do.
>
> Also please note that I am using the stable version 3.0.1 which doesn't have
> API call like you have just suggested.
> Though I have tried your suggestion on 3.1rc1 and it worked well.
>
> Will appreciate your thoughts on this.
>
> Thanks,
> Pankaj Arora
>
>
>
>
>
> -----Original Message-----
> From: Ortwin Glück [mailto:[EMAIL PROTECTED]
> Sent: Friday, May 18, 2007 1:44 PM
> To: HttpComponents Project
> Subject: Re: FW: HttpClient authentication problem.
>
> Pankaj,
>
> BASIC auth authenticates only a request.
> NTLM auth however authenticates a whole connection!
>
> So if the connection is reused no further authentication will be requested.
> That's what you are seeing. If you want to authenticate each request, you
> must make sure that the connection is closed after the request. You can
> achieve this by disabling connection pooling:
>
> new HttpClient(new SimpleHttpConnectionManager(true));
>
> Cheers
>
> Ortwin
>
> Pankaj Arora wrote:
>>
>>
>> ________________________________
>>
>> From: Pankaj Arora
>> Sent: Thursday, May 17, 2007 4:24 PM
>> To: '[EMAIL PROTECTED]';
>> '[EMAIL PROTECTED]'
>> Subject: HttpClient authentication problem.
>>
>>
>> Hi,
>> I am using Http Client to authenticate to IIS web Server for doing
>> NTLM authentication. Here's the description of sample codes I am using:
>>
>>
>> Program1 :: This code create 2 state,method,host configuration and
>> use a single instance of httpClient to execute method. Please not
>> that in first go I give the correct credentials for NTLM
>> authentication and in the second go I give the wrong credentials. In
>> the response I observe that I get http code 200 and in second go I
>> don't even see authentication happening when data is captured over ethereal.
>>
>> Program2:: This code also create 2 state,method,host configuration
>> but use separate instance of httpClient to execute method. Please not
>> that in first go I give the correct credentials for NTLM
>> authentication and in the second go I give the wrong credentials. In
>> the response I observe that I get http code 200 and in second go I get
>> response code as 401.
>>
>> The problem is I want to use single instance of HttpClient and also
>> want that session info is not maintained over the requests. Simply
>> speaking I want behavior 2 to happen when their is single instance of
>> HttpClient.
>> Is there a way to do this?
>>
>>
>>
>> Code and response received from server for reference.
>>
>> Program1:
>> _____________________________________________________________________
>> _ __ ___________________________________________________________
>> // Create an instance of HttpClient.
>> HttpClient client1 = new HttpClient();
>> HttpMethod _method1 = new GetMethod(url);
>> HttpState _httpState1 = new HttpState();
>> HostConfiguration hostConfig1 = new HostConfiguration();
>> UsernamePasswordCredentials credentials1;
>> credentials1 = new
>> NTCredentials("administrator","password","host","domain");
>>
>> AuthScope authScope1 = new AuthScope("host",port,domain,"NTLM");
>>
>> _httpState1.setCredentials(authScope1,credentials1);
>> hostConfig1.setHost("host"port);
>>
>> try {
>> // Execute the method.
>> int statusCode =
>> client1.executeMethod(hostConfig1,_method1,_httpState1);
>>
>> System.out.println("Status code :" + statusCode);
>> if (statusCode != HttpStatus.SC_OK) {
>> System.err.println("Method failed: " +
>> _method1.getStatusLine()
>> + "StatusCode:" + statusCode);
>> }
>>
>> // Read the response body.
>> byte[] responseBody = _method1.getResponseBody();
>>
>>
>> Header[] responseHeaders = _method1.getResponseHeaders();
>> // Header header;
>>
>> System.out.println("-------------------------------------------------
>> -
>> -- -----------------------------------");
>> for( Header header : responseHeaders){
>> System.out.println("Headers is " + header.getName() + "and the
>> value is :" + header.getValue());
>> }
>>
>>
>> HttpMethod _method2 = new GetMethod(url);
>> HttpState _httpState2 = new HttpState();
>> HostConfiguration hostConfig2 = new HostConfiguration();
>> UsernamePasswordCredentials credentials2;
>> credentials2 = new NTCredentials("administrator","wrong
>> password","host","domain");
>>
>> AuthScope authScope2 = new
>> AuthScope("host",port,"host","domain");
>>
>> _httpState2.setCredentials(authScope2,credentials2);
>> hostConfig2.setHost("host",port);
>> _httpState2.setCredentials(authScope2,credentials2);
>> statusCode =
>> client1.executeMethod(hostConfig2,_method2,_httpState2);
>>
>> System.out.println("Status code :" + statusCode);
>> if (statusCode != HttpStatus.SC_OK) {
>> System.err.println("Method failed: " +
>> _method2.getStatusLine()
>> + "StatusCode:" + statusCode);
>> }
>>
>> // Read the response body.
>> responseBody = _method2.getResponseBody();
>> responseHeaders = _method2.getResponseHeaders();
>> // Header header;
>>
>> System.out.println("-------------------------------------------------
>> -
>> -- -----------------------------------");
>> for( Header header : responseHeaders){
>> System.out.println("Headers is " + header.getName() + "and the
>> value is :" + header.getValue());
>> }
>> _____________________________________________________________________
>> _ __
>> __________________________________________________________________
>>
>> Response 1:
>> _____________________________________________________________________
>> _ __
>> ___________________________________________________________________
>> May 17, 2007 2:40:17 AM
>> org.apache.commons.httpclient.auth.AuthChallengeProcessor
>> selectAuthScheme
>> INFO: ntlm authentication scheme selected Status code :200
>> ---------------------------------------------------------------------
>> -
>> --
>> ---------------
>> Headers is Content-Lengthand the value is :51 Headers is
>> Content-Typeand the value is :text/html Headers is Last-Modifiedand
>> the value is :Sat, 14 Apr 2007 08:44:30 GMT Headers is
>> Accept-Rangesand the value is :bytes Headers is ETagand the value is
>> :"5cc42b1e717ec71:11d9"
>> Headers is Serverand the value is :Microsoft-IIS/6.0 Headers is
>> Dateand the value is :Thu, 17 May 2007 09:30:53 GMT Status code :200
>> ---------------------------------------------------------------------
>> -
>> --
>> ---------------
>> Headers is Content-Lengthand the value is :51 Headers is
>> Content-Typeand the value is :text/html Headers is Last-Modifiedand
>> the value is :Sat, 14 Apr 2007 08:44:30 GMT Headers is
>> Accept-Rangesand the value is :bytes Headers is ETagand the value is
>> :"5cc42b1e717ec71:11d9"
>> Headers is Serverand the value is :Microsoft-IIS/6.0 Headers is
>> Dateand the value is :Thu, 17 May 2007 09:30:53 GMT
>> _____________________________________________________________________
>> _ __ ____________________________________________________________
>>
>>
>> Program2:
>> _____________________________________________________________________
>> _ __ ______________________________________________________________
>>
>> // Create an instance of HttpClient.
>> HttpClient client1 = new HttpClient();
>> HttpMethod _method1 = new GetMethod(url);
>> HttpState _httpState1 = new HttpState();
>> HostConfiguration hostConfig1 = new HostConfiguration();
>> UsernamePasswordCredentials credentials1;
>> credentials1 = new
>> NTCredentials("administrator","password","host","domain");
>>
>> AuthScope authScope1 = new AuthScope("host",port,domain,"NTLM");
>>
>> _httpState1.setCredentials(authScope1,credentials1);
>> hostConfig1.setHost("host"port);
>>
>> try {
>> // Execute the method.
>> int statusCode =
>> client1.executeMethod(hostConfig1,_method1,_httpState1);
>>
>> System.out.println("Status code :" + statusCode);
>> if (statusCode != HttpStatus.SC_OK) {
>> System.err.println("Method failed: " +
>> _method1.getStatusLine()
>> + "StatusCode:" + statusCode);
>> }
>>
>> // Read the response body.
>> byte[] responseBody = _method1.getResponseBody();
>>
>>
>> Header[] responseHeaders = _method1.getResponseHeaders();
>> // Header header;
>>
>> System.out.println("-------------------------------------------------
>> -
>> -- -----------------------------------");
>> for( Header header : responseHeaders){
>> System.out.println("Headers is " + header.getName() + "and the
>> value is :" + header.getValue());
>> }
>>
>> HttpClient client2 = new HttpClient();
>> HttpMethod _method2 = new GetMethod(url);
>> HttpState _httpState2 = new HttpState();
>> HostConfiguration hostConfig2 = new HostConfiguration();
>> UsernamePasswordCredentials credentials2;
>> credentials2 = new NTCredentials("administrator","wrong
>> password","host","domain");
>>
>> AuthScope authScope2 = new
>> AuthScope("host",port,"host","domain");
>>
>> _httpState2.setCredentials(authScope2,credentials2);
>> hostConfig2.setHost("host",port);
>> _httpState2.setCredentials(authScope2,credentials2);
>> statusCode =
>> client2.executeMethod(hostConfig2,_method2,_httpState2);
>>
>> System.out.println("Status code :" + statusCode);
>> if (statusCode != HttpStatus.SC_OK) {
>> System.err.println("Method failed: " +
>> _method2.getStatusLine()
>> + "StatusCode:" + statusCode);
>> }
>>
>> // Read the response body.
>> responseBody = _method2.getResponseBody();
>> responseHeaders = _method2.getResponseHeaders();
>> // Header header;
>>
>> System.out.println("-------------------------------------------------
>> -
>> -- -----------------------------------");
>> for( Header header : responseHeaders){
>> System.out.println("Headers is " + header.getName() + "and the
>> value is :" + header.getValue());
>> }
>> _____________________________________________________________________
>> _ __
>> __________________________________________________________________
>>
>> Response 2:
>> _____________________________________________________________________
>> _ __
>> ___________________________________________________________________
>> May 17, 2007 3:43:07 AM
>> org.apache.commons.httpclient.auth.AuthChallengeProcessor
>> selectAuthScheme
>> INFO: ntlm authentication scheme selected Status code :200
>> ---------------------------------------------------------------------
>> -
>> --
>> ---------------
>> Headers is Content-Lengthand the value is :51 Headers is
>> Content-Typeand the value is :text/html Headers is Last-Modifiedand
>> the value is :Sat, 14 Apr 2007 08:44:30 GMT Headers is
>> Accept-Rangesand the value is :bytes Headers is ETagand the value is
>> :"5cc42b1e717ec71:11e1"
>> Headers is Serverand the value is :Microsoft-IIS/6.0 Headers is
>> Dateand the value is :Thu, 17 May 2007 10:33:42 GMT May 17, 2007
>> 3:43:08 AM org.apache.commons.httpclient.auth.AuthChallengeProcessor
>> selectAuthScheme
>> INFO: ntlm authentication scheme selected May 17, 2007 3:43:08 AM
>> org.apache.commons.httpclient.HttpMethodDirector
>> processWWWAuthChallenge
>> INFO: Failure authenticating with NTLM <any realm>@vm3-ntlm-01:8589
>> Status code :401 Method failed: HTTP/1.1 401
>> UnauthorizedStatusCode:401
>> ---------------------------------------------------------------------
>> -
>> --
>> ---------------
>> Headers is Content-Lengthand the value is :1539 Headers is
>> Content-Typeand the value is :text/html Headers is Serverand the
>> value is :Microsoft-IIS/6.0 Headers is WWW-Authenticateand the value
>> is :Negotiate Headers is WWW-Authenticateand the value is :NTLM
>> Headers is Dateand the value is :Thu, 17 May 2007 10:33:42 GMT
>> _____________________________________________________________________
>> _ __ _______________________________________________________________
>>
>
> --
> [web] http://www.odi.ch/
> [blog] http://www.odi.ch/weblog/
> [pgp] key 0x81CF3416
> finger print F2B1 B21F F056 D53E 5D79 A5AF 02BE 70F5 81CF 3416
>
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--
[web] http://www.odi.ch/
[blog] http://www.odi.ch/weblog/
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