int srv_recv_request(snfs_msg_req_t* req, struct sockaddr_un* cliaddr, socklen_t* clilen)
{
int status = my_recvfrom(req, cliaddr, clilen);
if (status == 0) {
printf("[snfs_srv] request error.\n");
return 0;
}
if (status < 0) {
printf("[snfs_srv] recvfrom error: %s.\n", strerror(errno));
exit(-1);
}
return status;
}
void dg_cli(FILE *fp, int sockfd, const SA *pservaddr, socklen_t servlen)
{
int n = 0;
char sendline[MAXLINE];
char recvline[MAXLINE + 1]; //!!!
while (my_fgets(sendline, MAXLINE, fp) != NULL)
{
my_sendto(sockfd, sendline, strlen(sendline),
0, pservaddr, servlen);
n = my_recvfrom(sockfd, recvline, MAXLINE,
0, NULL, NULL);
recvline[n] = 0;
my_fputs(recvline, stdout);
}
}
void tu8_9dg_cli(FILE *fp, int sockfd,
const SA *pservaddr, socklen_t servlen)
{
int n = 0;
char sendline[MAXLINE];
char recvline[MAXLINE];
socklen_t len ;
struct sockaddr *preply_addr; //用于返回的地址, sockaddr!!!
preply_addr = my_malloc(servlen);
while (my_fgets(sendline, MAXLINE, fp) != NULL)
{
my_sendto(sockfd, sendline, strlen(sendline),
0, pservaddr, servlen);
// printf("sendto %s : %s\n",
// my_sock_ntop(preply_addr, len), sendline);
len = servlen ;
n = my_recvfrom(sockfd, recvline, MAXLINE,
0, preply_addr, &len);
// printf("recvfrom %s : %s\n",
// my_sock_ntop(preply_addr, len), recvline);
if (len != servlen
|| memcmp(pservaddr, preply_addr, len) != 0)
{
printf("reply from %s (ignored)\n",
my_sock_ntop(preply_addr, len));
continue;
}
recvline[n] = 0;
my_fputs(recvline, stdout);
}
}
void dg_cli(FILE *fp, int sockfd, const SA *pservaddr, socklen_t servlen)
{
int n = 0;
int maxfdp1 = 0;
const int on = 1;
char sendline[MAXLINE] = {0};
char recvline[MAXLINE] = {0};
fd_set rset;
socklen_t len;
struct sockaddr *preply_addr = NULL;
preply_addr = my_malloc(servlen);
my_setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
my_pipe(pipefd);
// printf("pipefd[0] = %d\n", pipefd[0]); //+
maxfdp1 = max(sockfd, pipefd[0]) + 1;
FD_ZERO(&rset);
my_signal(SIGALRM, recvfrom_alarm);
while (my_fgets(sendline, MAXLINE, fp) != NULL )
{
my_sendto(sockfd, sendline, strlen(sendline),
0, pservaddr, servlen);
alarm(3);
while (1)
{
FD_SET(sockfd, &rset);
FD_SET(pipefd[0], &rset);
if ( (n = select(maxfdp1, &rset, NULL, NULL, NULL)) < 0 )
{
if (errno == EINTR)
{
DEBUG;
printf("select errno = EINTR\n"); //+
continue;
}
else
{
err_sys("select error");
}
}
// printf("kankan!\n");
if ( FD_ISSET(sockfd, &rset) )
{
len = servlen;
n = my_recvfrom(sockfd, recvline, MAXLINE,
0, preply_addr, &len);
recvline[n] = 0;
printf("from %s: %s",
my_sock_ntop(preply_addr, len),
recvline);
}
if ( FD_ISSET(pipefd[0], &rset) )
{
// printf("read 上面\n");
my_read(pipefd[0], &n, 1); //timer expired
// printf("read 下面!\n");
break;
}
}
}
free(preply_addr);
}
