Multicast Xfer 
A Multicast File Transfer Utility
Requirements for building
First we need to make sure we have all the appropriate libraries.
Please consult this chart for help with installing the required packages.
If your OS is not listed, please help us fill out the table, or submit a request via github.
| OS | Commands (as root) |
|---|---|
| CentOS | yum install -y gcc openssl-devel |
| Debian | apt update; apt install -y build-essential libssl-dev |
| Fedora | yum install -y gcc openssl-devel |
| Ubuntu | apt update; apt install -y build-essential libssl-dev |
Compile the code
Install the openssl development package and compile the code
cd src
./compile.sh
Prepare your route
In order to use the multicast protocol, you need to have a proper route set.
Use the ip or route utilities to set a multicast route on a specific network interface.
route add -net 224.0.0.0 netmask 240.0.0.0 eth0
or
ip route add 224.0.0.0/4 dev eth0
Sending and Receiving
Start the receiver with default options
./mcastrecv.exe
Start the sender with default options
./mcastsend.exe <FILE>
Start the receiver with options
Set BAILONMISS to abort current operation on any missed chunks.
export BAILONMISS=1
./mcastrecv.exe
Start the sender with options
Set the MTU to send packets no larger than this value.
Set the SLEEPDELAY to wait this many microseconds before sending another chunk.
export MTU=3000
export SLEEPDELAY=250
./mcastsend.exe <FILE>