Thank you for the fast reply:
A lot of get,post requests go through these methods, and after having
defined the httpclient static sometimes i receive this warning:
"2009.06.24. 15:23:29
org.apache.http.impl.conn.SingleClientConnManager revokeConnection
WARNING: Invalid use of SingleClientConnManager: connection still
allocated.
Make sure to release the connection before allocating another one."
Do you have any idea what to do?
Regards,
Imre
On 2009.06.24., at 15:57, Oleg Kalnichevski wrote:
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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