Unable run a server.....

[group11]

hi all,

we trying to run a server code for finding out time of our system....

code is:
#include "unp.h"
#include <time.h>

int
main(int argc, char **argv)
{
int listenfd, connfd;
struct sockaddr_in servaddr;
char buff[MAXLINE];
time_t ticks;

listenfd = Socket(AF_INET, SOCK_STREAM, 0);

bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(13); /* daytime server */

Bind(listenfd, (SA *) &servaddr, sizeof(servaddr));

Listen(listenfd, LISTENQ);

for ( ; ; ) {
connfd = Accept(listenfd, (SA *) NULL, NULL);

ticks = time(NULL);
snprintf(buff, sizeof(buff), "%.24s\r\n", ctime(&ticks));
Write(connfd, buff, strlen(buff));

Close(connfd);
}
}



code for client is:

#include "unp.h"

int
main(int argc, char **argv)
{
int sockfd, n;
char recvline[MAXLINE + 1];
struct sockaddr_in servaddr;

if (argc != 2)
err_quit("usage: a.out <IPaddress>");

if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
err_sys("socket error");

bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(13); /* daytime server */
if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0)
err_quit("inet_pton error for %s", argv[1]);

if (connect(sockfd, (SA *) &servaddr, sizeof(servaddr)) < 0)
err_sys("connect error");

while ( (n = read(sockfd, recvline, MAXLINE)) > 0) {
recvline[n] = 0; /* null terminate */
if (fputs(recvline, stdout) == EOF)
err_sys("fputs error");
}
if (n < 0)
err_sys("read error");

exit(0);
}

then we running the server it says "permission denied.."

plz help out!!!!

thnxs.......

[cybervegan]

In the server code, you have:

servaddr.sin_port = htons(13); /* daytime server */

Port 13 is a resticted port, only available to the superuser. All ports below port 1024 are reserved for server processes, and any program that wishes to use them must be running as a root level process. Try upping your port number (on both server and client) to, say 10000, and see if it works. Alternatively, run your server as root with sudo.

hth,
-cybervegan