2013-01-08 21:05:02 +08:00
|
|
|
|
#include <rtthread.h>
|
2017-10-27 15:49:27 +08:00
|
|
|
|
//#include <lwip/sockets.h> /* 使用BSD socket,需要包含sockets.h头文件 */
|
|
|
|
|
#include <sys/socket.h> /* 使用BSD socket,需要包含sockets.h头文件 */
|
|
|
|
|
#include "netdb.h"
|
|
|
|
|
|
2013-01-08 21:05:02 +08:00
|
|
|
|
|
|
|
|
|
#define BUFSZ 1024
|
|
|
|
|
|
|
|
|
|
void udpserv(void* paramemter)
|
|
|
|
|
{
|
|
|
|
|
int sock;
|
|
|
|
|
int bytes_read;
|
|
|
|
|
char *recv_data;
|
|
|
|
|
rt_uint32_t addr_len;
|
|
|
|
|
struct sockaddr_in server_addr, client_addr;
|
|
|
|
|
|
|
|
|
|
/* 分配接收用的数据缓冲 */
|
|
|
|
|
recv_data = rt_malloc(BUFSZ);
|
|
|
|
|
if (recv_data == RT_NULL)
|
|
|
|
|
{
|
|
|
|
|
/* 分配内存失败,返回 */
|
|
|
|
|
rt_kprintf("No memory\n");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* 创建一个socket,类型是SOCK_DGRAM,UDP类型 */
|
|
|
|
|
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
|
|
|
|
|
{
|
|
|
|
|
rt_kprintf("Socket error\n");
|
|
|
|
|
|
|
|
|
|
/* 释放接收用的数据缓冲 */
|
|
|
|
|
rt_free(recv_data);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* 初始化服务端地址 */
|
|
|
|
|
server_addr.sin_family = AF_INET;
|
|
|
|
|
server_addr.sin_port = htons(5000);
|
|
|
|
|
server_addr.sin_addr.s_addr = INADDR_ANY;
|
|
|
|
|
rt_memset(&(server_addr.sin_zero),0, sizeof(server_addr.sin_zero));
|
|
|
|
|
|
|
|
|
|
/* 绑定socket到服务端地址 */
|
|
|
|
|
if (bind(sock,(struct sockaddr *)&server_addr,
|
|
|
|
|
sizeof(struct sockaddr)) == -1)
|
|
|
|
|
{
|
|
|
|
|
/* 绑定地址失败 */
|
|
|
|
|
rt_kprintf("Bind error\n");
|
|
|
|
|
|
|
|
|
|
/* 释放接收用的数据缓冲 */
|
|
|
|
|
rt_free(recv_data);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
addr_len = sizeof(struct sockaddr);
|
|
|
|
|
rt_kprintf("UDPServer Waiting for client on port 5000...\n");
|
|
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
|
{
|
|
|
|
|
/* 从sock中收取最大BUFSZ - 1字节数据 */
|
|
|
|
|
bytes_read = recvfrom(sock, recv_data, BUFSZ - 1, 0,
|
|
|
|
|
(struct sockaddr *)&client_addr, &addr_len);
|
|
|
|
|
/* UDP不同于TCP,它基本不会出现收取的数据失败的情况,除非设置了超时等待 */
|
|
|
|
|
|
|
|
|
|
recv_data[bytes_read] = '\0'; /* 把末端清零 */
|
|
|
|
|
|
|
|
|
|
/* 输出接收的数据 */
|
|
|
|
|
rt_kprintf("\n(%s , %d) said : ",inet_ntoa(client_addr.sin_addr),
|
|
|
|
|
ntohs(client_addr.sin_port));
|
|
|
|
|
rt_kprintf("%s", recv_data);
|
|
|
|
|
|
|
|
|
|
/* 如果接收数据是exit,退出 */
|
|
|
|
|
if (strcmp(recv_data, "exit") == 0)
|
|
|
|
|
{
|
2017-10-27 15:49:27 +08:00
|
|
|
|
closesocket(sock);
|
2013-01-08 21:05:02 +08:00
|
|
|
|
|
|
|
|
|
/* 释放接收用的数据缓冲 */
|
|
|
|
|
rt_free(recv_data);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef RT_USING_FINSH
|
|
|
|
|
#include <finsh.h>
|
|
|
|
|
/* 输出udpserv函数到finsh shell中 */
|
|
|
|
|
FINSH_FUNCTION_EXPORT(udpserv, startup udp server);
|
|
|
|
|
#endif
|