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From Kenny MacLeod <ken...@kizoom.com>
Subject ThreadSafeClientConnManager configuration example
Date Fri, 17 Oct 2008 11:02:52 GMT
Hi Folks,

I'm trying to find the least verbose way of configuring a 
DefaultHttpClient with a ThreadSafeClientConnManager.

The example code given for this goes through a manual process of 
configuring HttpParams and SchemeRegistry objects, which is more or less 
copied from the DefaultHttpClient.createHttpParams() and 
createClientConnectionManager() methods.

It's a bit of a chicken and egg situation - DefaultHttpClient can create 
its own HttpParams and SchemeRegistry, which are themselves fine, but 
only once its been constructed, and the constructor requires the 
ThreadSafeClientConnManager, but that in turn requires the HttpParams 
and SchemeRegistry objects.  The only way out is to manually construct 
the HttpParams and SchemeRegistry, which is a waste.

It seems to me that DefaultHttpClient's constructor should take a 
ClientConnectionManagerFactory instead of a ClientConnectionManager. 
That way, the createClientConnectionManager() method already has the 
factory reference, and doesn't have to grub around in the HttpParams 
object to find it.

The code would then become:

new DefaultHttpClient(new ThreadSafeClientConnManagerFactory(), null);

where ThreadSafeClientConnManagerFactory.newInstance() just constructs 
ThreadSafeClientConnManager.  There's no manual construction of 
HttpParams and SchemeRegistry, you just leave it up to DefaultHttpClient.

Have I missed the point?

kenny

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