socket_wrapper aims to help client/server software development teams willing to
gain full functional test coverage. It makes possible to run several instances
of the full software stack on the same machine and perform locally functional
testing of complex network configurations.

- Redirects all network communication to happen over unix sockets.
- Support for IPv4 and IPv6 socket and addressing emulation.
- Ablility to capture network traffic in pcap format.

WWW: https://cwrap.org/socket_wrapper.html