I am working establishing the connection between Testlink and Jenkin and here is the issue while connecting them...
XML-RPC server accepts POST requests only.

tarted by user anonymous
Building in workspace C:\Program Files (x86)\Jenkins\jobs\Jenkin Testlink Plug-in example\workspace
Preparing TestLink client API.
Using TestLink URL: http://xxx/lib/api/xmlrpc/v1/xmlrpc.php

FATAL: Test Project (name:ASK-TestLink-Jenkins) does not exist.
br.eti.kinoshita.testlinkjavaapi.util.TestLinkAPIException: Test Project (name:ASK-TestLink-Jenkins) does not exist.
at br.eti.kinoshita.testlinkjavaapi.BaseService.checkResponseError(BaseService.java:113)
at br.eti.kinoshita.testlinkjavaapi.BaseService.executeXmlRpcCall(BaseService.java:91)
at br.eti.kinoshita.testlinkjavaapi.TestProjectService.getTestProjectByName(TestProjectService.java:108)
at br.eti.kinoshita.testlinkjavaapi.TestLinkAPI.getTestProjectByName(TestLinkAPI.java:485)
at hudson.plugins.testlink.TestLinkBuilder.getTestLinkSite(TestLinkBuilder.java:243)
at hudson.plugins.testlink.TestLinkBuilder.perform(TestLinkBuilder.java:134)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:745)
at hudson.model.Build$BuildExecution.build(Build.java:198)
at hudson.model.Build$BuildExecution.doRun(Build.java:159)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:518)
at hudson.model.Run.execute(Run.java:1706)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:231)
ERROR: Error communicating with TestLink. Check your TestLink configuration.
Finished: FAILURE

Note :- Tried with few lower version of the TestLink plugins, Even though the result remain same..
Please advice me on the same..