42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/* Implementa un daytime server che risponde alla porta definita dall'utente */
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#include "basic.h"
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#include <time.h>
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int main(int argc, char **argv) {
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int listenfd, connfd, n;
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struct sockaddr_in servaddr;
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char buff[MAXLINE];
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time_t ticks;
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if (argc != 2 ){
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printf("usage: daytimesrv <porta>\n");
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exit(0);
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}
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if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
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printf("socket error\n");
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exit(0);
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}
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bzero(&servaddr, sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_addr.s_addr = htonl(INADDR_ANY); /* wildcard address */
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servaddr.sin_port = htons(atoi(argv[1])); /* server port */
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if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
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printf("bind error\n"); exit(0);
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}
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if( listen(listenfd, 5) < 0 )
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{ printf("listen error\n");
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exit(0);
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}
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for ( ; ; ) {
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if( (connfd = accept(listenfd, (struct sockaddr *) NULL, NULL)) < 0)
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{ printf("accept error\n"); exit(0);}
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ticks = time(NULL);
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snprintf(buff, sizeof(buff), "%.24s\r\n", ctime(&ticks));
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while ( (n=write(connfd, buff, strlen(buff))) < 0 );
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close(connfd);
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}
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}
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