• Socket = IP-Adress + Portnumber
• Bidirektionaler ASCII-Datenstrom
• /etc/services - Konfigurationsdatei
• 0-1023: Well Known Ports (only root)
• 1024-49151: User Registered Ports
• 49152-65535: Temporary Ports
• netstat - Kommando

• IA-Seminar : Client / Server

• close
• fconfigure
• fileevent
• gets
• puts
• socket
• vwait

#!/usr/bin/tclsh

proc serverrequest { socketid } {
  gets $socketid request
  puts $socketid "Antwort: $request"
}

proc serverhandle { socketid ipaddr portno } {
  puts "Socket-ID: $socketid / IP-Adresse Client: $ipaddr / Portnummer Client: $portno"
  fileevent $socketid readable "serverrequest $socketid"
  fconfigure $socketid -buffering line
}

socket -server serverhandle 9010

vwait wartebisinalleewigkeit