[examples] update:

1. cleanup for posix dfs_net.
2. fixed recv buf overwrite.
3. format code.

1 files changed, 9 insertions, 8 deletions

diff --git a/examples/network/tcpsendpacket.c b/examples/network/tcpsendpacket.c
index e7c514806e..75134c19a2 100644
--- a/examples/network/tcpsendpacket.c
+++ b/examples/network/tcpsendpacket.c
@@ -1,8 +1,9 @@
 #include <rtthread.h>
-#include <lwip/netdb.h>   /* Ϊ�˽�������������Ҫ����netdb.hͷ�ļ� */
-#include <lwip/sockets.h> /* ʹ��BSD socket����Ҫ����sockets.hͷ�ļ� */
 
-void tcp_senddata(const char* url, int port, int length)
+#include <netdb.h>   /* Ϊ�˽�������������Ҫ����netdb.hͷ�ļ� */
+#include <sys/socket.h> /* ʹ��BSD socket����Ҫ����socket.hͷ�ļ� */
+
+void tcp_senddata(const char *url, int port, int length)
 {
     struct hostent *host;
     int sock, err, result, timeout, index;
@@ -27,7 +28,7 @@ void tcp_senddata(const char* url, int port, int length)
 
     timeout = 100;
     /* ���÷��ͳ�ʱʱ��100ms */
-    lwip_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
+    setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
     /* ��ʼ��Ԥ���ӵķ���˵�ַ */
     server_addr.sin_family = AF_INET;
     server_addr.sin_port = htons(port);
@@ -38,20 +39,20 @@ void tcp_senddata(const char* url, int port, int length)
     err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
     rt_kprintf("TCP thread connect error code: %d\n", err);
 
-    while(1)
+    while (1)
     {
         /* �������ݵ�sock���� */
         result = send(sock, buffer_ptr, length, MSG_DONTWAIT);
-        if(result < 0) //���ݷ��ʹ�����
+        if (result < 0) //���ݷ��ʹ�����
         {
             rt_kprintf("TCP thread send error: %d\n", result);
-            lwip_close(sock);
+            closesocket(sock);
 
             /* �ر����ӣ����´������� */
             rt_thread_delay(10);
 
             if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
-                rt_kprintf("TCP Socket error:%d\n",sock);
+                rt_kprintf("TCP Socket error:%d\n", sock);
 
             err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
             rt_kprintf("TCP thread connect error code: %d\n", err);