To build this library you will need GNU Make installed and any modern C compiler. Library is tested on Linux, *BSD and macOS operating systems. First you need to create features.mk makefile: cp src/platform/posix/features_tmpl.mk src/platform/posix/features.mk Edit it according to your needs. Defaults are fine. Note that with_frag, with_rbuf and with_msgq are experimental features and should not be used in production. To (re)build library, utilities and tests simply do: ./build.sh (MAKE=gmake ./build.sh on *BSD systems) In tests subdirectory you will find simple test examples. To test vc_server and vc_client (vconn feature) do: mkdir test/keys util/keygen test/keys/n1.pub test/keys/n1.priv util/keygen test/keys/n2.pub test/keys/n2.priv util/keygen test/keys/n3.pub test/keys/n3.priv util/keygen test/keys/server.pub test/keys/server.priv cd test Then launch servers (each in its own terminal): ./vcs 0.0.0.0:3001 keys/n1.priv ./vcs 0.0.0.0:3002 keys/n2.priv 127.0.0.1:3001 keys/n1.pub ./vcs 0.0.0.0:3003 keys/n3.priv 127.0.0.1:3002 keys/n2.pub ./vc_server keys/server.priv 127.0.0.1:3001 keys/n1.pub keys/n2.pub keys/n3.pub ./vc_client keys/server.pub 127.0.0.1:3001 keys/n1.pub keys/n2.pub keys/n3.pub