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RELIABLE MULTICAST

Reliable UDP Multicast using a separate TCP ack channel per subscriber.

TESTING

Please note that a wireshark dissector plugin is available.

make wireshark

Test program usage

./rmc_test -?

Send single signal between publisher and subscriber

Start a publisher that:

  1. Emit periodic announce packets to potential subscribrers
  2. Waits for one subscriber to connect
  3. Sends a single packet (in a single multicast packet)
  4. Exits

Window 1:

./rmc_test -c 1

Start subscriber that:

  1. Waits for an announce packet from a publisher
  2. Connects to publisher and sets up subscribtion
  3. Receives however many packets that the publisher has to send
  4. Validates all packets
  5. Extits

Window 2:

./rmc_test -S

Send a million signals between one publisher and one subscriber

Bandwidth will be dependent on the interface that the multicast is bound to. WiFi is slower than gbit Ethernet.

./rmc_test -c 1000000
./rmc_test -S

Send a million signals from two publishers to a single subscriber.

The -i argument sets up node id to distinguish betwen two publishers.
The -e argument lists all publishers that the subscriber is to expect announce packets from.

./rmc_test -S -e1 -e2
./rmc_test -c 1000000 -i1 
./rmc_test -c 1000000 -i2

Send a million signals from one publishers to two subscribers

./rmc_test -S 
./rmc_test -S 
./rmc_test -c 1000000