以廣播的方式列印日誌

test.c用於測試以廣播的方式傳送列印資訊（客戶端）

#include 

#include 
#include 
#include 
#include 
#include 
#include 
#include 
int broadcast_log(int port, char *log)
myport = port;
//初始化socket
sender_socket = socket(pf_inet, sock_dgram, ipproto_udp);
if(sender_socket <= 0)
memset(&broadcast_addr, 0, sizeof(broadcast_addr));
broadcast_addr.sin_family = af_inet;
broadcast_addr.sin_addr.s_addr = htonl(inaddr_broadcast);
broadcast_addr.sin_port = htons(myport);
printf("\033[32m[%s:%d]\033[36m s_addr = %d, sin_port = %d\033[0m\n", __function__, __line__, broadcast_addr.sin_addr.s_addr,
broadcast_addr.sin_port);
//設定socket可選項，因為預設生成的會阻止廣播，所以要將可選項中的so_broadcast標誌置為1
setsockopt(sender_socket, sol_socket, so_broadcast, (void *)&opt_so_broadcast, sizeof(opt_so_broadcast));
memset(buff, 0, sizeof(buff));
snprintf(buff, sizeof(buff), "%s", log);
//將資料傳送到多播組
ret = sendto(sender_socket, buff, strlen(buff), 0, (struct sockaddr *)&broadcast_addr, sizeof(broadcast_addr));
printf("\033[32m[%s:%d]\033[36m ret = %d\033[0m\n", __function__, __line__, ret);
close(sender_socket);
return0;}
void send_log(char *fmt, ...)
#define debug(fmt, arg...) send_log("==>[%s:%d]"fmt"\n", __function__, __line__, ##arg)
int main(int argc , char *argv)

#include

#include
#include
#include
#include
#include
int main(int argc , char *argv)
//初始化receiver_socket
receiver_socket = socket(af_inet,sock_dgram, ipproto_udp);
if(receiver_socket <= 0)
memset(&receiver_addr,0,sizeof(receiver_addr));
receiver_addr.sin_family = af_inet;
#if 0
if(!inet_aton("12.12.12.30", &receiver_addr.sin_addr))
#else
receiver_addr.sin_addr.s_addr = htonl(inaddr_any);
//receiver_addr.sin_addr.s_addr = htonl(inaddr_broadcast);
#endif
receiver_addr.sin_port = htons(atoi(argv[1]));
printf("\033[32m[%s:%d]\033[36m s_addr = %d, sin_port = %d\033[0m\n", __function__, __line__, receiver_addr.sin_addr.s_addr, receiver_addr.sin_port);
//繫結位址
if(bind(receiver_socket,(struct sockaddr *)&receiver_addr,sizeof(receiver_addr)) == -1)
setvbuf(stdout, null, _ionbf, 0);
while(1)
buff[sizeof(buff) - 1] = 0;
for(iindex = 0; iindex < str_len; iindex++)
//printf("\n");
}close(receiver_socket);
return
0;}

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