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netstat doesn't show tcp sockets in Redhat 7.2
The following program, taken straight out of a
book does not provide the expected result which is to display the created socket.
The program works fine in Redhat 6.1. Has anyone else
seen this problem and does anyone know if this works
in Redhat 8.0.
If RH 8.0 works I will just upgrade.
If someone can point me to howto concerning the correct method to FTPing the ISO files that would be a big help.
I have successfully downloaded the files and burned the CDs
but when I try to boot it doesn't seem to work.
I'm not sure if the problem is with the download method or the boot procedure.
Any and all comments welcome.
/* inetaton.c:
*
* Example using inet_aton(3) :
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
/*
* This function reports the error and
* exits back to the shell :
*/
static void
bail(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 )
bail("socket()");
/* Establish address */
memset(&adr_inet,0,sizeof adr_inet);
adr_inet.sin_family = AF_INET;
adr_inet.sin_port = htons(9000);
if ( !inet_aton("127.0.0.23",
&adr_inet.sin_addr) )
bail("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 )
bail("bind()");
/* Display our socket address */
system("netstat -pa --tcp 2>/dev/null"
"| grep inetaton");
return 0;
}
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