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>