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server.c
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server.c
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#include "common.h"
#include <time.h>
int main(int argc, char** argv) {
int listenfd, connfd;
socklen_t len;
struct sockaddr_in servaddr, cliaddr;
char buf[MAXLINE];
time_t ticks;
if ( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
handle_errors("error listen.\n");
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(13); // daytime server
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
if ( (bind(listenfd, (SA*) &servaddr, sizeof(servaddr))) == -1)
handle_errors("bind error.\n");
Listen(listenfd, LISTENQ);
while (true) {
len = sizeof(cliaddr);
if ( (connfd = accept(listenfd, (SA*) &cliaddr, &len)) == -1)
handle_errors("Cannot accept connection.\n");
bzero(buf, sizeof(buf));
if ( inet_ntop(AF_INET, &(cliaddr.sin_addr), buf, sizeof(buf)) == NULL)
handle_errors("inet_ntop error.\n");
printf("\nConnection from %s, port %d\n", buf, ntohs(cliaddr.sin_port));
ticks = time(NULL);
snprintf(buf, sizeof(buf), "%.24s\r\n", ctime(&ticks));
if (write(connfd, buf, strlen(buf)) == -1)
handle_errors("write error.\n");
if (close(connfd) == -1)
handle_errors("close error.\n");
}
exit(EXIT_SUCCESS);
}