38 lines
935 B
C
38 lines
935 B
C
#include "unp.h"
|
|
|
|
void dg_cli(FILE *, int, const SA*, socklen_t);
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
int sockfd;
|
|
struct sockaddr_in servaddr;
|
|
|
|
if(argc != 2)
|
|
err_quit("usage: udpcli <IPaddress>");
|
|
|
|
bzero(&servaddr, sizeof(servaddr));
|
|
servaddr.sin_family = AF_INET;
|
|
servaddr.sin_port = htons(SERV_PORT);
|
|
Inet_pton(AF_INET, argv[1], &servaddr.sin_addr);
|
|
|
|
sockfd = Socket(AF_INET, SOCK_DGRAM, 0);
|
|
|
|
dg_cli(stdin, sockfd, (SA *)&servaddr, sizeof(servaddr));
|
|
|
|
exit(0);
|
|
|
|
}
|
|
|
|
void dg_cli(FILE *fp, int sockfd, const SA* pservaddr, socklen_t servlen)
|
|
{
|
|
int n;
|
|
char sendline[MAXLINE], recvline[MAXLINE];
|
|
|
|
while (Fgets(sendline, MAXLINE, fp) !=NULL) {
|
|
Sendto(sockfd, sendline, strlen(sendline), 0, pservaddr, servlen);
|
|
n = Recvfrom(sockfd, recvline, MAXLINE, 0, NULL, NULL);
|
|
recvline[n] = 0; // null terminate
|
|
Fputs(recvline, stdout);
|
|
}
|
|
|
|
} |