https://github.com/gregfjohnson/netnode https://github.com/gregfjohnson/netnode Netnode. It is a little like a unix pipe, a little like netcat, a little like

https://github.com/gregfjohnson/netnode https://github.com/gregfjohnson/netnode Netnode. It is a little like a unix pipe, a little like netcat, a little like tcpdump. But really simple. You create a graph of communicating entities with netnode. The terminal nodes of the graph are external data sources/sinks (user input, udp/tcp servers and clients, shell pipes, named pipes, /dev/tty*, etc.) The internal nodes are a mesh of instances of netnode. It is easy to insert a little instance of netnode anywhere, and have it print the traffic going through it. I think it turned out really well, and I use it for everything. It feels like "connective tissue" similar to classic Unix pipes, but for the network age. ./netnode -h -p/-P: tcp client/server. -u/-U: udp client/server; client does pings to notify server. -k: stdin/stdout. -s: filename. works for /dev/ttyS0 etc., named pipes, regular files. -X: tcp proxy; local_server:remote_host:remote_port -w: raw network device interface eth0 etc. (requires sudo.) -i next interface is input only -o next interface is output only -d: next interface is prefaced with time/direction -t: next interface shows non-printable characters in hex -b: next interface prints data formatted as hex dump