Download OpenSSL 1.0.1c or higher from http://www.openssl.org and detar it.

# Configure OpenSSL for Mac OS X 64 bit

./Configure darwin64-x86_64-cc sctp threads shared –prefix=$HOME/install

# Configure OpenSSL for any other system (Linux, FreeBSD, Solaris…)

./config sctp threads shared –prefix=$HOME/install

# Build everything and install software only (skips man pages to save a lot of time)

make

make install_sw

# Download Charachter Generator test program and certificates

dtls_sctp_chargen.zip

# Unzip

unzip dtls_sctp_chargen.zip

cd dtls_sctp_chargen

# Build Mac OS X or Linux

gcc -g -O2 -Wall -g -ansi -pedantic -L$HOME/install/lib -I$HOME/install/include -o dtls_sctp_chargen dtls_sctp_chargen.c -lssl -lcrypto -lpthread -lsctp

# Build FreeBSD

gcc -g -O2 -Wall -g -ansi -pedantic -L$HOME/install/lib -I$HOME/install/include -o dtls_sctp_chargen dtls_sctp_chargen.c -lssl -lcrypto -lpthread

# Set required environment variable for FreeBSD and Linux (bash)

export LD_LIBRARY_PATH=$HOME/install/lib

# Set required environment variable for FreeBSD and Linux (tcsh)

setenv LD_LIBRARY_PATH $HOME/install/lib

# Start server

./dtls_sctp_chargen

# Start client

./dtls_sctp_chargen 127.0.0.1

# Expected output (client)

Statistics:

Sent messages: 17744 Received messages: 17788

Sent messages on stream 0: 3516 Received messages on stream 0: 3520

Sent messages on stream 1: 3588 Received messages on stream 1: 3603

Sent messages on stream 2: 3611 Received messages on stream 2: 3622

Sent messages on stream 3: 3421 Received messages on stream 3: 3429

Sent messages on stream 4: 3608 Received messages on stream 4: 3614

Renegotiations initiated: 28

Numbers may vary, since random number generators are involved. If there is a problem, no such message is shown, but an error message.