convert end of line

5 files changed, 419 insertions, 419 deletions

diff --git a/examples/network/tcpclient.c b/examples/network/tcpclient.c
index f583fb40ff..088206fdb1 100644
--- a/examples/network/tcpclient.c
+++ b/examples/network/tcpclient.c
@@ -1,98 +1,98 @@
-#include <rtthread.h>

-#include <lwip/netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */

-#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */

-

-#define BUFSZ	1024

-

-static const char send_data[] = "This is TCP Client from RT-Thread."; /* 发送用到的数据 */

-void tcpclient(const char* url, int port)

-{

-    char *recv_data;

-    struct hostent *host;

-    int sock, bytes_received;

-    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 = gethostbyname(url);

-

-    /* 分配用于存放接收数据的缓冲 */

-    recv_data = rt_malloc(BUFSZ);

-    if (recv_data == RT_NULL)

-    {

-        rt_kprintf("No memory\n");

-        return;

-    }

-

-    /* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */

-    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)

-    {

-        /* 创建socket失败 */

-        rt_kprintf("Socket error\n");

-

-        /* 释放接收缓冲 */

-        rt_free(recv_data);

-        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));

-

-    /* 连接到服务端 */

-    if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)

-    {

-        /* 连接失败 */

-        rt_kprintf("Connect fail!\n");

-        lwip_close(sock);

-

-        /*释放接收缓冲 */

-        rt_free(recv_data);

-        return;

-    }

-

-    while(1)

-    {

-        /* 从sock连接中接收最大BUFSZ - 1字节数据 */

-        bytes_received = recv(sock, recv_data, BUFSZ - 1, 0);

-        if (bytes_received <= 0)

-        {

-            /* 接收失败，关闭这个连接 */

-            lwip_close(sock);

-

-            /* 释放接收缓冲 */

-            rt_free(recv_data);

-            break;

-        }

-

-        /* 有接收到数据，把末端清零 */

-        recv_data[bytes_received] = '\0';

-

-        if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)

-        {

-            /* 如果是首字母是q或Q，关闭这个连接 */

-            lwip_close(sock);

-

-            /* 释放接收缓冲 */

-            rt_free(recv_data);

-            break;

-        }

-        else

-        {

-            /* 在控制终端显示收到的数据 */

-            rt_kprintf("\nRecieved data = %s " , recv_data);

-        }

-

-        /* 发送数据到sock连接 */

-        send(sock,send_data,strlen(send_data), 0);

-    }

-

-    return;

-}

-

-#ifdef RT_USING_FINSH

-#include <finsh.h>

-/* 输出tcpclient函数到finsh shell中 */

-FINSH_FUNCTION_EXPORT(tcpclient, startup tcp client);

-#endif

+#include <rtthread.h>
+#include <lwip/netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */
+#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */
+
+#define BUFSZ	1024
+
+static const char send_data[] = "This is TCP Client from RT-Thread."; /* 发送用到的数据 */
+void tcpclient(const char* url, int port)
+{
+    char *recv_data;
+    struct hostent *host;
+    int sock, bytes_received;
+    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 = gethostbyname(url);
+
+    /* 分配用于存放接收数据的缓冲 */
+    recv_data = rt_malloc(BUFSZ);
+    if (recv_data == RT_NULL)
+    {
+        rt_kprintf("No memory\n");
+        return;
+    }
+
+    /* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */
+    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+    {
+        /* 创建socket失败 */
+        rt_kprintf("Socket error\n");
+
+        /* 释放接收缓冲 */
+        rt_free(recv_data);
+        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));
+
+    /* 连接到服务端 */
+    if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
+    {
+        /* 连接失败 */
+        rt_kprintf("Connect fail!\n");
+        lwip_close(sock);
+
+        /*释放接收缓冲 */
+        rt_free(recv_data);
+        return;
+    }
+
+    while(1)
+    {
+        /* 从sock连接中接收最大BUFSZ - 1字节数据 */
+        bytes_received = recv(sock, recv_data, BUFSZ - 1, 0);
+        if (bytes_received <= 0)
+        {
+            /* 接收失败，关闭这个连接 */
+            lwip_close(sock);
+
+            /* 释放接收缓冲 */
+            rt_free(recv_data);
+            break;
+        }
+
+        /* 有接收到数据，把末端清零 */
+        recv_data[bytes_received] = '\0';
+
+        if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)
+        {
+            /* 如果是首字母是q或Q，关闭这个连接 */
+            lwip_close(sock);
+
+            /* 释放接收缓冲 */
+            rt_free(recv_data);
+            break;
+        }
+        else
+        {
+            /* 在控制终端显示收到的数据 */
+            rt_kprintf("\nRecieved data = %s " , recv_data);
+        }
+
+        /* 发送数据到sock连接 */
+        send(sock,send_data,strlen(send_data), 0);
+    }
+
+    return;
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+/* 输出tcpclient函数到finsh shell中 */
+FINSH_FUNCTION_EXPORT(tcpclient, startup tcp client);
+#endif
diff --git a/examples/network/tcpsendpacket.c b/examples/network/tcpsendpacket.c
index 328b9df7c9..50841e0149 100644
--- a/examples/network/tcpsendpacket.c
+++ b/examples/network/tcpsendpacket.c
@@ -1,63 +1,63 @@
-#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)

-{

-	struct hostent *host;

-	int sock, err, result, timeout, index;

-	struct sockaddr_in server_addr;

-	rt_uint8_t *buffer_ptr;

-

-	/* ͨ��������ڲ���url���host��ַ��������������������������� */

-	host = gethostbyname(url);

-	/* ����һ��socket��������SOCKET_STREAM��TCP���� */

-	if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)

-	{

-		/* ����socketʧ�� */

-		rt_kprintf("Socket error\n");

-		return;

-	}

-

-	/* �����ڴ� */

-	buffer_ptr = rt_malloc(length);

-	/* ���췢������ */

-	for (index = 0; index < length; index ++)

-		buffer_ptr[index] = index & 0xff;

-

-	timeout = 100;

-	/* ���÷��ͳ�ʱʱ��100ms */

-	lwip_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));

-	/* ��ʼ��Ԥ���ӵķ���˵�ַ */

-	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));

-

-	/* ���ӵ������ */

-	err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));

-	rt_kprintf("TCP thread connect error code: %d\n", err);

-

-	while(1)

-	{

-		/* �������ݵ�sock���� */

-		result = send(sock, buffer_ptr, length, MSG_DONTWAIT);

-		if(result == -1) //���ݷ��ʹ�����

-		{

-			rt_kprintf("TCP thread send error: %d\n", result);

-			lwip_close(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);

-			err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));

-			rt_kprintf("TCP thread connect error code: %d\n", err);

-		}

-	}

-}

-

-#ifdef RT_USING_FINSH

-#include <finsh.h>

-/* ���tcpclient������finsh shell�� */

-FINSH_FUNCTION_EXPORT(tcp_senddata, send a packet through tcp connection);

-#endif

-

+#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)
+{
+	struct hostent *host;
+	int sock, err, result, timeout, index;
+	struct sockaddr_in server_addr;
+	rt_uint8_t *buffer_ptr;
+
+	/* ͨ��������ڲ���url���host��ַ��������������������������� */
+	host = gethostbyname(url);
+	/* ����һ��socket��������SOCKET_STREAM��TCP���� */
+	if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
+	{
+		/* ����socketʧ�� */
+		rt_kprintf("Socket error\n");
+		return;
+	}
+
+	/* �����ڴ� */
+	buffer_ptr = rt_malloc(length);
+	/* ���췢������ */
+	for (index = 0; index < length; index ++)
+		buffer_ptr[index] = index & 0xff;
+
+	timeout = 100;
+	/* ���÷��ͳ�ʱʱ��100ms */
+	lwip_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
+	/* ��ʼ��Ԥ���ӵķ���˵�ַ */
+	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));
+
+	/* ���ӵ������ */
+	err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
+	rt_kprintf("TCP thread connect error code: %d\n", err);
+
+	while(1)
+	{
+		/* �������ݵ�sock���� */
+		result = send(sock, buffer_ptr, length, MSG_DONTWAIT);
+		if(result == -1) //���ݷ��ʹ�����
+		{
+			rt_kprintf("TCP thread send error: %d\n", result);
+			lwip_close(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);
+			err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
+			rt_kprintf("TCP thread connect error code: %d\n", err);
+		}
+	}
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+/* ���tcpclient������finsh shell�� */
+FINSH_FUNCTION_EXPORT(tcp_senddata, send a packet through tcp connection);
+#endif
+
diff --git a/examples/network/tcpserver.c b/examples/network/tcpserver.c
index 6d83acc1b2..54b8c9301d 100644
--- a/examples/network/tcpserver.c
+++ b/examples/network/tcpserver.c
@@ -1,122 +1,122 @@
-#include <rtthread.h>

-#include <lwip/sockets.h> /* 使用BSD Socket接口必须包含sockets.h这个头文件 */

-

-static const char send_data[] = "This is TCP Server from RT-Thread."; /* 发送用到的数据 */

-void tcpserv(void* parameter)

-{

-   char *recv_data; /* 用于接收的指针，后面会做一次动态分配以请求可用内存 */

-   rt_uint32_t sin_size;

-   int sock, connected, bytes_received;

-   struct sockaddr_in server_addr, client_addr;

-   rt_bool_t stop = RT_FALSE; /* 停止标志 */

-

-   recv_data = rt_malloc(1024); /* 分配接收用的数据缓冲 */

-   if (recv_data == RT_NULL)

-   {

-       rt_kprintf("No memory\n");

-       return;

-   }

-

-   /* 一个socket在使用前，需要预先创建出来，指定SOCK_STREAM为TCP的socket */

-   if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)

-   {

-       /* 创建失败的错误处理 */

-       rt_kprintf("Socket error\n");

-

-       /* 释放已分配的接收缓冲 */

-       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); /* 服务端工作的端口 */

-   server_addr.sin_addr.s_addr = INADDR_ANY;

-   rt_memset(&(server_addr.sin_zero),8, 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)

-   {

-       /* 绑定失败 */

-       rt_kprintf("Unable to bind\n");

-

-       /* 释放已分配的接收缓冲 */

-       rt_free(recv_data);

-       return;

-   }

-

-   /* 在socket上进行监听 */

-   if (listen(sock, 5) == -1)

-   {

-       rt_kprintf("Listen error\n");

-

-       /* release recv buffer */

-       rt_free(recv_data);

-       return;

-   }

-

-   rt_kprintf("\nTCPServer Waiting for client on port 5000...\n");

-   while(stop != RT_TRUE)

-   {

-       sin_size = sizeof(struct sockaddr_in);

-

-       /* 接受一个客户端连接socket的请求，这个函数调用是阻塞式的 */

-       connected = accept(sock, (struct sockaddr *)&client_addr, &sin_size);

-       /* 返回的是连接成功的socket */

-

-       /* 接受返回的client_addr指向了客户端的地址信息 */

-       rt_kprintf("I got a connection from (%s , %d)\n",

-                  inet_ntoa(client_addr.sin_addr),ntohs(client_addr.sin_port));

-

-       /* 客户端连接的处理 */

-       while (1)

-       {

-           /* 发送数据到connected socket */

-           send(connected, send_data, strlen(send_data), 0);

-

-           /* 从connected socket中接收数据，接收buffer是1024大小，但并不一定能够收到1024大小的数据 */

-           bytes_received = recv(connected,recv_data, 1024, 0);

-           if (bytes_received <= 0)

-           {

-               /* 接收失败，关闭这个connected socket */

-               lwip_close(connected);

-               break;

-           }

-

-           /* 有接收到数据，把末端清零 */

-           recv_data[bytes_received] = '\0';

-           if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)

-           {

-               /* 如果是首字母是q或Q，关闭这个连接 */

-               lwip_close(connected);

-               break;

-           }

-           else if (strcmp(recv_data, "exit") == 0)

-           {

-               /* 如果接收的是exit，则关闭整个服务端 */

-               lwip_close(connected);

-               stop = RT_TRUE;

-               break;

-           }

-           else

-           {

-               /* 在控制终端显示收到的数据 */

-               rt_kprintf("RECIEVED DATA = %s \n" , recv_data);

-           }

-       }

-   }

-

-   /* 退出服务 */

-   lwip_close(sock);

-

-   /* 释放接收缓冲 */

-   rt_free(recv_data);

-

-   return ;

-}

-

-#ifdef RT_USING_FINSH

-#include <finsh.h>

-/* 输出tcpserv函数到finsh shell中 */

-FINSH_FUNCTION_EXPORT(tcpserv, startup tcp server);

-#endif

+#include <rtthread.h>
+#include <lwip/sockets.h> /* 使用BSD Socket接口必须包含sockets.h这个头文件 */
+
+static const char send_data[] = "This is TCP Server from RT-Thread."; /* 发送用到的数据 */
+void tcpserv(void* parameter)
+{
+   char *recv_data; /* 用于接收的指针，后面会做一次动态分配以请求可用内存 */
+   rt_uint32_t sin_size;
+   int sock, connected, bytes_received;
+   struct sockaddr_in server_addr, client_addr;
+   rt_bool_t stop = RT_FALSE; /* 停止标志 */
+
+   recv_data = rt_malloc(1024); /* 分配接收用的数据缓冲 */
+   if (recv_data == RT_NULL)
+   {
+       rt_kprintf("No memory\n");
+       return;
+   }
+
+   /* 一个socket在使用前，需要预先创建出来，指定SOCK_STREAM为TCP的socket */
+   if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+   {
+       /* 创建失败的错误处理 */
+       rt_kprintf("Socket error\n");
+
+       /* 释放已分配的接收缓冲 */
+       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); /* 服务端工作的端口 */
+   server_addr.sin_addr.s_addr = INADDR_ANY;
+   rt_memset(&(server_addr.sin_zero),8, 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)
+   {
+       /* 绑定失败 */
+       rt_kprintf("Unable to bind\n");
+
+       /* 释放已分配的接收缓冲 */
+       rt_free(recv_data);
+       return;
+   }
+
+   /* 在socket上进行监听 */
+   if (listen(sock, 5) == -1)
+   {
+       rt_kprintf("Listen error\n");
+
+       /* release recv buffer */
+       rt_free(recv_data);
+       return;
+   }
+
+   rt_kprintf("\nTCPServer Waiting for client on port 5000...\n");
+   while(stop != RT_TRUE)
+   {
+       sin_size = sizeof(struct sockaddr_in);
+
+       /* 接受一个客户端连接socket的请求，这个函数调用是阻塞式的 */
+       connected = accept(sock, (struct sockaddr *)&client_addr, &sin_size);
+       /* 返回的是连接成功的socket */
+
+       /* 接受返回的client_addr指向了客户端的地址信息 */
+       rt_kprintf("I got a connection from (%s , %d)\n",
+                  inet_ntoa(client_addr.sin_addr),ntohs(client_addr.sin_port));
+
+       /* 客户端连接的处理 */
+       while (1)
+       {
+           /* 发送数据到connected socket */
+           send(connected, send_data, strlen(send_data), 0);
+
+           /* 从connected socket中接收数据，接收buffer是1024大小，但并不一定能够收到1024大小的数据 */
+           bytes_received = recv(connected,recv_data, 1024, 0);
+           if (bytes_received <= 0)
+           {
+               /* 接收失败，关闭这个connected socket */
+               lwip_close(connected);
+               break;
+           }
+
+           /* 有接收到数据，把末端清零 */
+           recv_data[bytes_received] = '\0';
+           if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)
+           {
+               /* 如果是首字母是q或Q，关闭这个连接 */
+               lwip_close(connected);
+               break;
+           }
+           else if (strcmp(recv_data, "exit") == 0)
+           {
+               /* 如果接收的是exit，则关闭整个服务端 */
+               lwip_close(connected);
+               stop = RT_TRUE;
+               break;
+           }
+           else
+           {
+               /* 在控制终端显示收到的数据 */
+               rt_kprintf("RECIEVED DATA = %s \n" , recv_data);
+           }
+       }
+   }
+
+   /* 退出服务 */
+   lwip_close(sock);
+
+   /* 释放接收缓冲 */
+   rt_free(recv_data);
+
+   return ;
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+/* 输出tcpserv函数到finsh shell中 */
+FINSH_FUNCTION_EXPORT(tcpserv, startup tcp server);
+#endif
diff --git a/examples/network/udpclient.c b/examples/network/udpclient.c
index 041adb32c5..50e0d39784 100644
--- a/examples/network/udpclient.c
+++ b/examples/network/udpclient.c
@@ -1,50 +1,50 @@
-#include <rtthread.h>

-#include <lwip/netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */

-#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */

-

-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)

-{

-   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);

-

-   /* 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));

-

-   /* 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);

-

-       /* 计数值减一 */

-       count --;

-   }

-

-   /* 关闭这个socket */

-   lwip_close(sock);

-}

-

-#ifdef RT_USING_FINSH

-#include <finsh.h>

-/* 输出udpclient函数到finsh shell中 */

-FINSH_FUNCTION_EXPORT(udpclient, startup udp client);

-#endif

+#include <rtthread.h>
+#include <lwip/netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */
+#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */
+
+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)
+{
+   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);
+
+   /* 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));
+
+   /* 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);
+
+       /* 计数值减一 */
+       count --;
+   }
+
+   /* 关闭这个socket */
+   lwip_close(sock);
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+/* 输出udpclient函数到finsh shell中 */
+FINSH_FUNCTION_EXPORT(udpclient, startup udp client);
+#endif
diff --git a/examples/network/udpserver.c b/examples/network/udpserver.c
index ee84e9d061..cacd93b839 100644
--- a/examples/network/udpserver.c
+++ b/examples/network/udpserver.c
@@ -1,86 +1,86 @@
-#include <rtthread.h>

-#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */

-

-#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)

-       {

-           lwip_close(sock);

-

-           /* 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

+#include <rtthread.h>
+#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */
+
+#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)
+       {
+           lwip_close(sock);
+
+           /* 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