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@Inproceedings { 200605NSDIOCALA,
   title = {OCALA: An Architecture for Supporting Legacy Applications over Overlays},
   year = {2006},
   abstract = {In order for overlays and new network architectures to gain real user acceptance, users should be able to leverage overlay functionality without any modifications to their applications and operating systems. We present our design, implementation, and experience with OCALA, an overlay convergence architecture that achieves this goal. OCALA interposes an overlay convergence layer below the transport layer. This layer is composed of an overlay independent sub-layer that interfaces with legacy applications, and an overlay dependent sub-layer that delivers packets to the overlay. Unlike previous efforts, OCALA enables: (a) simultaneous access to multiple overlays (b) communication between hosts in different overlays (c) communication between overlay hosts and legacy hosts (d) extensibility, allowing researchers to incorporate their overlays into OCALA. We currently support five overlays, i3 [32], RON [1], HIP [19], DOA [39] and OverDoSe [31] on Linux, Windows XP/2000 and Mac OS X. We (and a few other research groups and end-users) have used OCALA for over a year with many legacy applications ranging from web browsers to remote desktop applications.},
   note = {San Jose, California},
   publisher = {USENIX / ACM},
   booktitle = {Proceedings of 3rd ACM Sigcomm/ACM Sigops Symposium on Networked Systems Design and Implementation (NSDI 2006)},
   organization = {ACM},
   author = {Joseph, Dilip A and Lakshminarayanan, Karthik and Stoica, Ion and Wehrle, Klaus}
}

@Techreport { 200605OCALATechReportUCB,
   title = {OCALA: An Architecture for Supporting Legacy Applications over Overlays},
   year = {2005},
   number = {UCB/CSD-005/1397},
   abstract = {The ever increasing demand of new applications coupled with the increasing rigidity of the Internet has led researchers to propose overlay networks as a means of introducing new functionality in the Internet. However, despite sustained efforts, few overlays are used widely. Providing support for legacy Internet applications to access such overlays would significantly expand the user base of the overlays, as the users can instantly benefit from the overlay functionality. We present the design and implementation of OCALA, an Overlay Convergence Architecture for Legacy Applications. Unlike previous efforts, OCALA allows users to access different overlays simultaneously, as well as hosts in different overlays to communicate with each other. In addition, OCALA reduces the implementation burden on the overlay developers, by factoring out the functions commonly required to support legacy applications, such as tapping legacy traffic, authentication and encryption. Our implementation of OCALA as a proxy requires no changes to the applications or operating systems. We currently support two overlays, i3 and RON, on Linux and Windows XP/2000 platforms. We (and a few other research groups and end-users) have used the proxy over a eleven-month period with many legacy applications ranging from web browsers to remote desktop applications.},
   url = {http://ocala.cs.berkeley.edu},
   address = {UCB, Berkeley, USA},
   institution = {University of California at Berkeley},
   author = {Joseph, Dilip and Kannan, Jayanthkumar and Kubota, Ayumu and Stoica, Ion and Wehrle, Klaus}
}