Support HttpState object association with a client and use it when invoking
httpClient.executeMethod(...)
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Key: AXIS2-4288
URL: https://issues.apache.org/jira/browse/AXIS2-4288
Project: Axis 2.0 (Axis2)
Issue Type: New Feature
Components: kernel, transports
Reporter: Dobri Kitipov
Hi all,
I am opening a new JIRA related to the HttpState association with a given Axis
client.
The use case
I want to point out a concrete use case I have. I want to reuse a HttpClient
among different instances of a clients which are executed in different threads.
Every client can make several invocations. The clients can call different Web
Services (WSs) deployed at different hosts/servers. As a consequence every
client may need to provide different authentication Credentials and may need to
support transport sessions using Cookies.
Both Credentials and Cookies are part of the HttpState. As a result the
HttpState associated with the HttpClient that is reused cannot be reused that
easily in the scenario described above. Credentials are associated with a given
host, port, realm and authentication schema (defines the AuthScope object used
as a key for the credentials Map part of the HttpState).
Following is an excerpt from the AbstractHTTPSender#setAuthenticationInfo:
creds = new UsernamePasswordCredentials(username, password);
agent.getState().setCredentials(new AuthScope(host, port, realm), creds);
Credentials are kept into a Map and could be identified uniquely from client to
client (thread to thread), but this Map is exposed to all clients which reuse
the HttpClient which is not a good idea.
The situation with the other member of the HttpState (i.e. Cookies) is similar.
When we have *different* client instances (configured to use cookies
options.setManageSession(true)) calling one and the same WS's operation then
the effect is that both are sharing one JSESSIONID.
The proposal
The proposal is based on my question posted at httpclient-us...@hc.apache.org
[2]
The idea is to provide the capability to specify/associate a separate HttpState
with every client and still reuse one and the same HttpClient. What you just
need is to pass it as a parameter to the HttpClient#executeMethod.
I decided that the HttpState should be kept into the ServiceContext. I did all
changes needed in Axis2 kernel (in fact they are really few) and added the
possibility to use a separate HttpState and invoke HttpClient#executeMethod
passing it as a parameter. The changes keep the kernel backward compatible. I
did and several tests and it looks good.
Please, give me your comments. Do you like this extension? If so I can provide
you with the changes and finally we can agree on committing them into the
kernel.
I have the patches but we are using a little bit older version of axis2 .I need
some time to apply the changes to the trunk version. Then I will provide them.
Although I am a WS committer I can not commit anything since I am still waiting
my company's lawyers to check all aspects of this.
Thank you,
Dobri
[1] http://www.mail-archive.com/axis-dev@ws.apache.org/msg45787.html
[2] http://www.mail-archive.com/httpclient-us...@hc.apache.org/msg01944.html
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