ucspi-tcp: ucspi-tcp (djb's TCP client-server command-line tools) ucspi-tcp: ucspi-tcp: ucspi-tcp includes several programs. tcpserver waits for incoming ucspi-tcp: connections and, for each connection, runs a program of your ucspi-tcp: choice, it provides useful environment variables, resource limits, ucspi-tcp: and access control features. tcpclient makes a TCP connection and ucspi-tcp: runs a program of your choice. It sets up the same environment ucspi-tcp: variables as tcpserver. ucspi-tcp: ucspi-tcp: Also included are recordio, a tool that monitors all the input ucspi-tcp: and output of a server, and several sample clients.