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[examples] update:

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1. cleanup for posix dfs_net.
2. fixed recv buf overwrite.
3. format code.
This commit is contained in:
aozima
2018-02-06 18:59:24 +08:00
parent ff811a93ff
commit e20fb2f5b2
6 changed files with 254 additions and 238 deletions
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127
examples/network/udpserver.c
View File

@@ -1,85 +1,84 @@
#include <rtthread.h>
//#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 <sys/socket.h> /* 使用BSD socket，需要包含socket.h头文件 */
#include "netdb.h"
#define BUFSZ 1024
#define BUFSZ 1024
void udpserv(void* paramemter)
static void udpserv(void *paramemter)
{
int sock;
int bytes_read;
char *recv_data;
rt_uint32_t addr_len;
struct sockaddr_in server_addr, client_addr;
int sock;
int bytes_read;
char *recv_data;
socklen_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;
}
/* 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");
/* 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;
}
/* 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));
/* 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");
/* 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;
}
/* 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");
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 */
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 */
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);
/* 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)
{
closesocket(sock);
/* 如果接收数据是exit，退出 */
if (strcmp(recv_data, "exit") == 0)
{
closesocket(sock);
/* 释放接收用的数据缓冲 */
rt_free(recv_data);
break;
}
}
/* 释放接收用的数据缓冲 */
rt_free(recv_data);
break;
}
}
return;
return;
}
#ifdef RT_USING_FINSH