73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
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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[INET_ADDRSTRLEN];
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short port;
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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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struct sockaddr_in client_addr;
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unsigned int client_addr_len = sizeof(client_addr);
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struct sockaddr_in server_local_addr;
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unsigned int server_local_addr_len = sizeof(server_local_addr);
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char * socket_buffer = (char *) malloc (server_local_addr_len) ;
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for ( ; ; ) {
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if( (connfd = accept(listenfd, (struct sockaddr *) &client_addr, &client_addr_len)) < 0)
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{ printf("accept error\n");
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exit(0);
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}
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inet_ntop(AF_INET, &(client_addr.sin_addr), buff, INET_ADDRSTRLEN);// get client ip
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port = ntohs(client_addr.sin_port);// get client port
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fprintf (stdout,"%s%c%hu\n",buff,':',port);
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getsockname (connfd, (struct sockaddr *) &server_local_addr, &server_local_addr_len);
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memcpy (socket_buffer, &server_local_addr, server_local_addr_len);
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write (connfd,socket_buffer, server_local_addr_len);
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int ridden;
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struct sockaddr_in t;
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unsigned int t1 = sizeof(t);
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ridden = read (connfd, &t,t1 );
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printf("Letto %d bytes\n",ridden);
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close(connfd);
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printf("Chiuso socket lato server\n");
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}
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}
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