《CNetwork - Introduction to TCP-IP Socket Programming》.pdf

An Introduction to Socket Programming file:///C|/Eigene Dateien/Manualz/not ad...duction to Socket Programming/socket.htm An Introduction to Socket Programming (by) Reg Quinton reggers@julian.uwo.ca © $Id: socket.html,v 1.8 1997/05/02 20:17:16 reggers Exp $ Contents: Introduction BEWARE Existing Services Netstat Observations Host names and IP numbers Programming Calls Services and Ports Programming Calls Socket Addressing File Descriptors and Sockets File Descriptors Sockets Client Connect Client Communication Stdio Buffers Server Applications Server Bind Listen and Accept Inetd Services Inetd Comments Whois Daemon Running the Daemon The Code Connecting to the Server Whois Client Perl Socket Programming Final Comments Note Well Suggested Reading Author Introduction: These course notes are directed at Unix application programmers who want to develop client/server applications in the TCP/IP domain (with some hints for those who want to write UDP/IP applications). Since the Berkeley socket interface has become something of a standard these notes will apply to programmers on other platforms. Fundamental concepts are covered including network addressing, well known services, sockets and ports. Sample applications are examined with a view to developing similar applications that serve other contexts. Our goals