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Diffstat (limited to 'ace/RMCast/README')
| -rw-r--r-- | ace/RMCast/README | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/ace/RMCast/README b/ace/RMCast/README deleted file mode 100644 index ed6b22bf1c6..00000000000 --- a/ace/RMCast/README +++ /dev/null @@ -1,57 +0,0 @@ -# $Id$ - - This directory will contain a simple, small-scale reliable -multicast framework for ACE. The framework is based on the ASX -components of the ACE library: the protocol is implemented as a stack -of interchangeable "modules", each one in charge of a very small task. -For example, one module implements fragmentation and reassembly, other -modules implement retransmission, send ACK and NAK messages, and -maintain receiver membership. - - The modules are replaced to achieve different levels of -reliability. For example, the retransmission module can be either the -"Best_Effort", "Semi_Reliable" or "Reliable" implementation. In the -first case no retransmissions are performed, but lost messages are -detected and reported to the receiver. The "Semi_Reliable" case -messages are held for a pre-specified amount of time, and -re-transmited if requested, but it is possible to loose some messages -if multiple re-transmissions fail. As in the "Best_Effort" case the -lost messages are detected and flagged to the application. Finally -in the "Reliable" mode the senders are flowed controlled until enough -messages are successfully transmitted. - - In general the stack looks like this: - - -SENDER: - ----------------------------------------------------------------- -Buffering : Save lost messages -Retransmission : Retransmit ----------------------------------------------------------------- -Fragmentation : Fragment messages in smaller chunks -Reassembly : and ensure that the IOVMAX limit is not - : reached ----------------------------------------------------------------- -Transport : Encapsulate the specific transport media - : such as TCP/IP, ATM, or shared memory - : Demuxes incoming data to the right chain - : Change control messages and data messages - : to the right dynamic types. ----------------------------------------------------------------- - -RECEIVER: - ----------------------------------------------------------------- -Lost detection : Detect lost messages and send control - : messages back ----------------------------------------------------------------- -Reassembly : Reassemble messages, fragment control -Fragmentation : data ----------------------------------------------------------------- -Transport : Group membership, ACT reception, - : handle keep-alive messages... ----------------------------------------------------------------- - - -@@ TODO: Piggybacking... |