diff options
Diffstat (limited to 'regress/sys/netinet/mcast/README')
| -rw-r--r-- | regress/sys/netinet/mcast/README | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/regress/sys/netinet/mcast/README b/regress/sys/netinet/mcast/README new file mode 100644 index 00000000000..4d4756f27c5 --- /dev/null +++ b/regress/sys/netinet/mcast/README @@ -0,0 +1,31 @@ +Test IPv4 multicast packets. + +Use two programs to send and receive multicast packets. After +setting up the socket, the receiver forks and execs the sender to +avoid races. If the test fails, the receiver runs into a timeout. + +The test programs are: +mcsend - send one multicat UDP packet +mcrecv - receive one multicast UDP packet +mcroute - route one multicast UDP packet + +The options for mcsend and mcrecv and mcroute are: +-b fork to background after setup +-f file print message to log file, default stdout +-g group multicast group, default 224.0.0.123 +-i ifaddr multicast interface address +-l loop disable or enable loopback, 0 or 1 +-m message message in payload, maximum 255 characters, default foo +-n timeout expect not to receive any message until timeout +-p port destination port number, default 12345 +-o outaddr outgoing interface address +-r timeout receive timeout in seconds +-t ttl set multicast ttl +mcsend ... after setting up receive, fork and exec send command + +With mcroute packets are sent over a multicast router. The kernel +route is installed statically. The machines sender, router, receiver +are involved. Receiver is on the local machine, route is on remote +machine. The sender can share the local machine or be started on +a target machine, depending on the setup. This is controlled via +environment. |