43 lines
983 B
C
43 lines
983 B
C
|
#include <rtthread.h>
|
||
|
|
#include <lwip/netdb.h>
|
||
|
|
#include <lwip/sockets.h>
|
||
|
|
|
||
|
|
const char send_data[] = "This is UDP Client from RT-Thread.\n";
|
||
|
|
void udpclient(const char* url, int port, int count)
|
||
|
|
{
|
||
|
|
int sock;
|
||
|
|
struct hostent *host;
|
||
|
|
struct sockaddr_in server_addr;
|
||
|
|
|
||
|
|
host= (struct hostent *) gethostbyname(url);
|
||
|
|
|
||
|
|
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
|
||
|
|
{
|
||
|
|
rt_kprintf("Socket error\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
server_addr.sin_family = AF_INET;
|
||
|
|
server_addr.sin_port = htons(port);
|
||
|
|
server_addr.sin_addr = *((struct in_addr *)host->h_addr);
|
||
|
|
rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
|
||
|
|
|
||
|
|
while (count)
|
||
|
|
{
|
||
|
|
sendto(sock, send_data, strlen(send_data), 0,
|
||
|
|
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
|
||
|
|
|
||
|
|
rt_thread_delay(50);
|
||
|
|
|
||
|
|
count --;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* close socket */
|
||
|
|
lwip_close(sock);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef RT_USING_FINSH
|
||
|
|
#include <finsh.h>
|
||
|
|
FINSH_FUNCTION_EXPORT(udpclient, startup udp client);
|
||
|
|
#endif
|