sendto error:Address family not supported by protocol
程序代码如下所示：#include <sys/types.h>#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <netdb.h>
#include <errno.h>
#include <strings.h>
#include <string.h>
#define MCAST_PORT 8888
#define MCAST_ADDR "224.0.0.88"
int main(int argc, char **argv)
{
struct sockaddr_in mcast_addr, client_addr;
struct sockaddr_in temp_addr;
int sockfd;
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if(sockfd == -1)
{
fprintf(stderr, "socket() error.\n");
exit(EXIT_FAILURE);
}
//初始化多播地址
bzero(&mcast_addr, sizeof(mcast_addr));
mcast_addr.sin_family = AF_INET;
mcast_addr.sin_family = htons(MCAST_PORT);
mcast_addr.sin_addr.s_addr = inet_addr(MCAST_ADDR);
char send_buf = {0};
int i = 1;
while(1)
{
memset(send_buf, 0, sizeof(send_buf));
sprintf(send_buf, "%d", i);
int send_num = sendto(sockfd, send_buf, sizeof(send_buf), 0, (struct sockaddr *)&mcast_addr, sizeof(mcast_addr));
if(send_num < 0)
{
fprintf(stderr, "sendto() error.\n");
printf("the error is: %d, 具体内容为：%s\n", errno, strerror(errno));
exit(EXIT_FAILURE);
}
else
{
printf("send message: %s\n", send_buf);
}
sleep(1);
i++;
memset(send_buf, 0, sizeof(send_buf));
int temp_len = sizeof(struct sockaddr);
send_num = recvfrom(sockfd, send_buf, 1024, 0, (struct sockaddr *)&temp_addr, &temp_len);
printf("receive message: %s\n", send_buf);
}
close(sockfd);
return 0;
}
错误如下：
上网查找资料，没有解决问题，因此来请教。。 版主，拯救一下小弟。。。:'( mcast_addr.sin_family = AF_INET;
mcast_addr.sin_family = htons(MCAST_PORT); 回复 3# linux_c_py_php
非常感谢，这种错误，哎，以后要仔细。
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