Internet-Domain Sockets

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UNIX-domain sockets can be used only for communication between two processes on the same computer.
Internet-domain sockets, on the other hand, may be used to connect processes on different machines connected by a network.
Sockets connecting processes through the Internet use the Internet namespace represented by PF_INET. The most common protocols are TCP/IP.
- Internet socket addresses contain two parts: a machine and a port number.This information is stored in a struct sockaddr_in variable.
- Fig. 3 illustrates the use of Internet-domain sockets. The http://siber.cankaya.edu.tr/SystemsProgramming/cfiles/socket-inet.cprogram obtains the home page from the Web server whose hostname is specified on the command line.
  
  Figure 3: Read from a WWW Server.
  $\begin{figure}\begin{center} \tiny \begin{verbatim}...$

**Figure 3:** Read from a WWW Server.
$\begin{figure}\begin{center} \tiny \begin{verbatim}...$

$ ./socket-inet siber.cankaya.edu.tr

Cem Ozdogan 2007-04-16