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 loopOf 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.