Re: [p2-dev] ECF filetransfer contribuiton for m3
As Pascal requested, here is a bug for coordinating the build and
incorporation of the connection-reuse enhancement into p2/Equinox:
Further, here is the ECF enhancement for creating a provider based upon
httpclient 4.1 that Pascal referred to:
WRT to the actual integration and use of new providers (i.e. httpclient
4.1, if that's what is desired):
ECF contributor Thomas Joiner has already implemented an ECF provider
based upon httpclient 4.1...see
https://bugs.eclipse.org/bugs/show_bug.cgi?id=251740#c17. Based upon
my understanding, httpclient 4.1 should/could solve a number of
outstanding issues with httpclient 3.1 (which the ECF filetransfer is
currently based upon)...including better/non-workaround support for NTLM
v2 proxing...better support for proxies in general...among other things.
Realistically...I expect, however, that the new provider could have
regressions of it's own...that may take some amount of testing and
debugging...perhaps only to be detected when testing/using milestone
releases prior to 3.8. Before ECF/I start the integration, I will need
commitment from the p2/Equinox team that there will be some support for
helping to test and debug the new provider, as otherwise ECF does not
currently have resources to commit to this. The good news, of course,
is that we can always continue to use the existing providers (httpclient
3.1 or the JRE-provider)...or fall back to them at any time if
needed...via a simple switch.
So...before beginning the integration and testing of the work on bug
251740...if this is important enough to the p2 team...that it be added
as an explicit plan item...and that resources be identified to assist in
One other question: I believe that httpclient 4.1 and the provider are
both dependent upon JRE 1.5 (I haven't looked yet at exactly where yet).
Another possibility is to create a provider based upon Jetty Client
(some/appropriate recent version). But if this were preferred there
would have to be some resource identified to create the ECF provider
(not a difficult chore technically, but obviously takes familiarity with
Jetty client api).
On 9/23/2011 8:38 AM, Scott Lewis wrote:
In order to reduce time and space costs for filetransfer, ECF has
recently added support for httpclient connection reuse
This change is in great need of regression testing 'in the wild' (i.e.
with a variety of proxy environments, other network environs, etc).
We have done all the testing that we have available to us, and I think
now would be a good time to get it into m3. Note that there is a new
system prop to disable the connection reuse...in case some major
Now that p2 is consuming from ECF's repos, how should this
contribution/integration proceed? (as we don't yet have it in an ECF
release...since it's been released since our 3.5.2 release in August).
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