Re: HttpClient instance management

> On Wed, Jun 24, 2009 at 03:45:51PM +0200, Imre Fazekas wrote:
>> Dear All,
>>
>>
>> i'm just wondering when the DefaultHttpClient class should be
>> instantiated.
>> I have a class providing basic HTTP services like sending JSON  
>> message,
>> sending a get and parsing the response, etc. So this class has static
>> methods.
>> I defined these members with these initializations:
>> private static HttpParams                  defaultParameters;
>> private static  SchemeRegistry              supportedSchemes;
>> private static  ClientConnectionManager     clcm;
>> static{
>>        setup();
>>        clcm = createManager();
>>    }
>>
>>    private static final void setup() {
>>        supportedSchemes = new SchemeRegistry();
>>        SocketFactory sf = PlainSocketFactory.getSocketFactory();
>>        supportedSchemes.register(new Scheme("http", sf, 80));
>>
>>        HttpParams params = new BasicHttpParams( );
>>        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
>>        HttpProtocolParams.setUseExpectContinue(params, false);
>>
>>        defaultParameters = params;
>>
>>        context = new BasicHttpContext( );
>>    }
>>
>>    private static final ClientConnectionManager createManager() {
>>        return new ThreadSafeClientConnManager( defaultParameters,
>> supportedSchemes );
>>    }
>>
>>
>> May i define the HttpClient as a static field or i should define  
>> always a
>> new instance when a service method is called? Like this:
>
> You may and you should. In short one should have:
>
> 1 HttpClient per service / application
> 1 HttpContext per thread / user
> 1 HttpRequest per request execution
>
> Oleg
>
>
>> public static Response get(String uri) {
>>        DefaultHttpClient httpClient = getHttpClient();
>>        HttpGet get = new HttpGet( serverURI + uri );
>>      ...
>> }
>>
>>
>>
>> Thank you in advance!
>>
>> Regards,
>>
>> Imre
>>
>>
>>
>>
>>
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