Recently I had the task of recreating a video player for a customer for which no source code was available. The player needed to support on demand and live streaming, so I opted for an OSMF based player - why reinvent the wheel?
Things went well until the time came to add the live streaming support. The chosen CDN uses the FCSubscribe method for live streaming. In case you don't know, FCSubscribe is a serverside method which the player needs to call in order to instruct the CDN to deliver the requested stream to the edge server that you are connected to in order to play the stream.
Some CDNs (including Akamai and Limelight) provide custom OSMF plugins for this task, and if your CDN does the same then you have nothing else to do apart from using their plugin and you are set. However some CDNs do not (yet) provide such plugins, and since the task of creating one is no mean feat (and it was certainly not part of the budget for the player I was working on), another solution had to be found.