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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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60
examples/network/udpclient.c
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@@ -5,44 +5,44 @@
#include "netdb.h"
const char send_data[] = "This is UDP Client from RT-Thread.\n"; /* 发送用到的数据 */
void udpclient(const char* url, int port, int count)
void udpclient(const char *url, int port, int count)
{
int sock;
struct hostent *host;
struct sockaddr_in server_addr;
int sock;
struct hostent *host;
struct sockaddr_in server_addr;
/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
host= (struct hostent *) gethostbyname(url);
/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
host = (struct hostent *) gethostbyname(url);
/* 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");
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");
return;
}
/* 初始化预连接的服务端地址 */
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));
/* 初始化预连接的服务端地址 */
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));
/* 总计发送count次数据 */
while (count)
{
/* 发送数据到服务远端 */
sendto(sock, send_data, strlen(send_data), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
/* 总计发送count次数据 */
while (count)
{
/* 发送数据到服务远端 */
sendto(sock, send_data, strlen(send_data), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
/* 线程休眠一段时间 */
rt_thread_delay(50);
/* 线程休眠一段时间 */
rt_thread_delay(50);
/* 计数值减一 */
count --;
}
/* 计数值减一 */
count --;
}
/* 关闭这个socket */
closesocket(sock);
/* 关闭这个socket */
closesocket(sock);
}
#ifdef RT_USING_FINSH