Client-Proxy Design issues and features

• When to initiate the Mutlicast join
  The time required to join a multicast group can be substantial because of the potential for join propagation within the network. If the request is sent to the server before the proxy joins the multicast group, the server could begin multicasting before the proxy is able to accept packets. Therefore, we have decided that joining the multicast group should take place before the request is forwarded to the server.
• MTP Listen Random Pause Time
  Because the server is listening on one port for join requests for all multicast groups, we were concerned with the possibility of collisions en route to the server. A few browsers requesting concurrently could generate a considerable number of requests since multiple requests are initiated in parallel on each client. To solve this, we introduce a very small random pause time before joining each group.