$ make LDLIBS=-lsctp sctp
g++     sctp.cpp  -lsctp -o sctp
$ ./sctp
flags 32896 assoc_id 0 stream 0 port 42417 len 20
flags 32896 assoc_id 0 stream 0 port 49898 len 20
flags 128 assoc_id 132 stream 0 port 42417 len 1 data o
flags 128 assoc_id 132 stream 0 port 42417 len 2 data OO
flags 128 assoc_id 134 stream 0 port 49898 len 1 data e
flags 128 assoc_id 134 stream 0 port 49898 len 2 data EE
flags 128 assoc_id 134 stream 0 port 49898 len 1 data e
flags 128 assoc_id 134 stream 0 port 49898 len 2 data EE
flags 128 assoc_id 132 stream 0 port 42417 len 1 data o
flags 128 assoc_id 132 stream 0 port 42417 len 2 data OO