1 files changed, 74 insertions, 0 deletions
diff --git a/examples/network/udpserver.c b/examples/network/udpserver.c
new file mode 100644
index 0000000000..9fede482fb
--- /dev/null
+++ b/examples/network/udpserver.c
@@ -0,0 +1,74 @@
+#include <rtthread.h>
+#include <lwip/sockets.h>
+
+void udpserv(void* paramemter)
+{
+	int sock;
+	int bytes_read;
+	char *recv_data;
+	rt_uint32_t addr_len;
+	struct sockaddr_in server_addr , client_addr;
+
+    recv_data = rt_malloc(1024);
+    if (recv_data == RT_NULL)
+    {
+        rt_kprintf("No memory\n");
+        return;
+    }
+
+    /* create socket */
+	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+	{
+		rt_kprintf("Socket error\n");
+
+        /* release recv buffer */
+        rt_free(recv_data);
+		return;
+	}
+
+    /* init server socket address */
+	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));
+
+	if (bind(sock,(struct sockaddr *)&server_addr,
+			 sizeof(struct sockaddr)) == -1)
+	{
+		rt_kprintf("Bind error\n");
+
+        /* release recv buffer */
+        rt_free(recv_data);
+        return;
+	}
+
+	addr_len = sizeof(struct sockaddr);
+
+	rt_kprintf("UDPServer Waiting for client on port 5000...\n");
+
+	while (1)
+	{
+		bytes_read = recvfrom(sock, recv_data, 1024, 0,
+            (struct sockaddr *)&client_addr, &addr_len);
+		recv_data[bytes_read] = '\0';
+		rt_kprintf("\n(%s , %d) said : ",inet_ntoa(client_addr.sin_addr),
+			   ntohs(client_addr.sin_port));
+		rt_kprintf("%s", recv_data);
+
+        if (strcmp(recv_data, "exit") == 0)
+        {
+            lwip_close(sock);
+
+            /* release recv buffer */
+            rt_free(recv_data);
+            break;
+        }
+	}
+
+	return;
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+FINSH_FUNCTION_EXPORT(udpserv, startup udp server);
+#endif