finish

UDP Ping程序实现/lab1.py

@@ -0,0 +1,10 @@
+# UDPPingerServer.py 
+from socket import * 
+
+########## Begin ##########
+
+serverSocket = socket(AF_INET, SOCK_DGRAM) 
+serverSocket.bind(("0.0.0.0",12000))
+########## End ##########
+
+print( serverSocket)

UDP Ping程序实现/lab2.py

@@ -0,0 +1,16 @@
+from socket import *
+
+# 创建UDP套接字
+serverSocket = socket(AF_INET, SOCK_DGRAM)
+# 绑定本机IP地址和端口号
+serverSocket.bind(('', 12000))
+
+########## Begin ##########
+# 接收客户端消息
+message, address = serverSocket.recvfrom(1024)
+# 将数据包消息转换为大写
+message = message.upper()
+#将消息传回给客户端
+serverSocket.sendto(message,address)
+########## End ##########
+    

UDP Ping程序实现/lab3.py

@@ -0,0 +1,28 @@
+from socket import *
+import random
+
+# 创建UDP套接字
+serverSocket = socket(AF_INET, SOCK_DGRAM)
+# 绑定本机IP地址和端口号
+serverSocket.bind(('', 12000))
+
+num=0
+while True:
+		
+	
+	# 接收客户端消息
+	message, address = serverSocket.recvfrom(1024)
+	# 将数据包消息转换为大写
+	message = message.upper()
+		
+    num=num+1
+    if num>=8:
+    	break
+
+    ########## Begin ##########
+    if num % 3 == 1:
+        continue
+    ########## End ##########
+    
+    #将消息传回给客户端
+	serverSocket.sendto(message, address)

UDP Ping程序实现/lab4.py

@@ -0,0 +1,11 @@
+
+from socket import *
+
+########## Begin ##########
+clientSocket =  socket(AF_INET, SOCK_DGRAM)  # 创建UDP套接字，使用IPv4协议
+# 设置套接字超时值1秒
+clientSocket.settimeout(1)
+########## End ##########
+
+print(clientSocket)
+print(clientSocket.gettimeout())

UDP Ping程序实现/lab5.py

@@ -0,0 +1,27 @@
+from socket import *
+import time
+
+serverName = '127.0.0.1' # 服务器地址，本例中使用本机地址
+serverPort = 12000 # 服务器指定的端口
+clientSocket = socket(AF_INET, SOCK_DGRAM) # 创建UDP套接字，使用IPv4协议
+clientSocket.settimeout(1) # 设置套接字超时值1秒
+
+for i in range(0, 9):
+    sendTime = time.time()
+    message = ('Ping %d %s' % (i+1, sendTime)).encode()     # 生成数据报，编码为bytes以便发送
+    
+    try:
+        
+        ########## Begin ##########
+        # 将信息发送到服务器
+        clientSocket.sendto(message,(serverName,serverPort))
+        # 从服务器接收信息，同时也能得到服务器地址
+        modifiedMessage, serverAddress = clientSocket.recvfrom(1024) 
+        ########## End ##########
+    
+        rtt = time.time() - sendTime # 计算往返时间
+        print('Sequence %d: Reply from %s    RTT = %.3fs' % (i+1, serverName, rtt)) # 显示信息
+    except Exception as e:
+        print('Sequence %d: Request timed out.' % (i+1))
+        
+clientSocket.close() # 关闭套接字