inet_addr example in c

/* inetaddr.c: * inet_addr example c code * Example using inet_addr(3): */ #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <errno.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/socket.h> #include <sys/un.h> #include <netinet/in.h> #include <arpa/inet.h> /* * This function reports the error and * exits back to the shell: */ static void displayError(const char *on_what) { fputs(on_what,stderr); fputc('/n',stderr); exit(1); } int main(int argc,char **argv) { int z; struct sockaddr_in adr_inet;/* AF_INET */ int len_inet; /* length */ int sck_inet; /* Socket */ /* * Create a Socket */ sck_inet = socket(AF_INET, SOCK_STREAM, 0); if ( sck_inet == -1 ) { displayError("socket()"); } /* * Establish address */ memset(&adr_inet,0,sizeof adr_inet); adr_inet.sin_family = AF_INET; adr_inet.sin_port = htons(9000); adr_inet.sin_addr.s_addr = inet_addr("127.0.0.95"); if ( adr_inet.sin_addr.s_addr == INADDR_NONE ) { displayError("bad address."); } len_inet = sizeof adr_inet; /* * Bind it to the socket */ z = bind(sck_inet, (struct sockaddr *)&adr_inet, len_inet); if ( z == -1 ) { displayError("bind()"); } /* * Display our socket address */ system("netstat -pa --tcp 2>/dev/null | grep inetaddr"); return 0; } /* * OUTPUT * [sgupta@rhel54x64 socket]$ gcc inet_addr.c -o inet_addr inet_addr.c:25:11: warning: multi-character character constant [sgupta@rhel54x64 socket]$ ./inet_addr tcp 0 0 127.0.0.95:9000 *:* CLOSE 992/inetaddr [sgupta@rhel54x64 socket]$ */

See also

Some other socket address conversion functions example :

  a. inet_ntoa

  b. inet_network

  c. inet_lnaof
  d. inet_netof
  e. inet_makeaddr