[AMG]: It's not too hard. In this example there are two computers, client and server. The client's IP address is, let's say, 10.0.0.1. It will connect to the server (IP: 10.0.0.2) on TCP port 12345. Here's the code each side runs: '''Client''' (IP: 10.0.0.1) set chan [socket 10.0.0.2 12345] ;# Open the connection puts $chan hello ;# Send a string flush $chan ;# Flush the output buffer puts "10.0.0.2:12345 says [gets $chan]" ;# Receive a string close $chan ;# Close the socket '''Server''' (IP: 10.0.0.2) proc accept {chan addr port} { ;# Make a proc to accept connections puts "$addr:$port says [gets $chan]" ;# Receive a string puts $chan goodbye ;# Send a string close $chan ;# Close the socket (automatically flushes) } ;# socket -server accept 12345 ;# Create a server socket vwait forever ;# Enter the event loop Of course the server should already be up and running before the client starts. What does it look like? '''Client''' (IP: 10.0.0.1) 10.0.0.2:12345 says goodbye '''Server''' (IP: 10.0.0.2) 10.0.0.1:49100 says hello Discuss. ---- See also: * [Einfach Tcl]: '''Beispiel: Ein einfacher Zeitserver''' and subsequent examples * [A little client-server example] * [socket] ---- [[ [Category Tutorial] | [Category Networking] ]]