/*
signal occur must in recvfrom ,or it must be a dead cycle
*/
void dg_cli(FILE *fp,int sockfd,const SA *pservaddr,socklen_t servlen){
int n;
const in on = 1;
char sendline[MAXLINE+1],recvline[MAXLINE+1];
socklen_t len;
struct sockaddr_in *preply_addr;
preply_addr = malloc(sizeof(struct sockaddr_in));
bzero(preply_addr);
SetSockopt(sockfd,SOL_SOCKET,SO_BROADCAST,&on,sizeof(on));
Signal(SIGALAM,recvfrom_alarm);
len = servlen;
while(Fgets(sendline,MAXLINE,fp) != NULL){
sendto(sockfd,sendline,strlen(sendline),0,pservaddr,len);
alarm(5);
for(;;){
len=servlen;
n = recvfrom(sockfd,recvlien,MAXLINE,0,preply_addr,&len);
if(n < 0){
if(errno == EINTR)
break;
else
err_quit("recvfrom error!");
}else{
recvfrom[n] = 0;
printf("from %s : %s",inet_ntop(preply_addr->sin_family,preply_addr->sin_addr.s_addr,preply_addr->sin_len),recvfrom);
}
}
}
}
void dg_cli(FILE *fp, int sockfd, const SA *pservaddr, socklen_t servlen)
{
int n;
const int on=1;
char sendline[MAXLINE],recvline[MAXLINE+1];
socklen_t len;
struct sockaddr *preply_addr;
preply_addr=malloc(servlen);
SetSockopt(sockopt, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
Signal(SIGALRM, recvfrom_alarm);
while(Fgets(sendline,MAXLINE,fp) != NULL)
{
SendTo(sockfd,sendline,strlen(sendline),0,pservaddr,servlen);
alarm(5);
for(; ;)
{
len=servlen;
n=recvfrom(sockfd,recvline,MAXLINE,0,preply_addr,&len);
if(n < 0)
{
if(errno==EINTR)
break;
else
err_sys("error");
}
else
{
recvline[n]=0; /*null terminate*/
printf("from %s: %s", Sock_ntop_host(preply_addr, len), recvline);
}
}
}
free(preply_addr);
}
int main(int meoww, char **pornn)
{
int cat; /*size*/
if(meoww == 2)
ListenMeow = tcp_listen(NULL, pornn[1], NULL);
else if(meoww == 3)
ListenMeow = tcp_listen(pornn[1], pornn[2], NULL);
else
err_quit("tcpreceive [<host>] <port#>");
cat = 4096;
SetSockopt(ListenMeow, SOL_SOCKET, SO_RCVBUF, &cat, sizeof(cat));
ConnectMeow = accept(ListenMeow, NULL, NULL);
Signal(SIGURG, sig_urg);
Fcntl(ConnectMeow, F_SETOWN, getpid());
for(; ;)
pause();
}
