You need to add the jackrabbit-standalone JAR file in your project. It will work and in fact as praveen said, might be you used wrong URL i.e., http:.//localhost:4503/crx/server (. in between colon and slash)
Actually we have a requirement like , to create a workflow so that when we make any change in content to page in server A and start workflow from that server(payload will be that modified page), then that change should be pushed to server B.(from one author to another author env)
So i thought i might try to establish connection from one server to another server first.
Any suggestions in how to implement the above requirement will be really helpful ,