Question

我一直在尝试在python中编写upd客户端和服务器。我在这里提供了我的代码。当我运行客户端和服务器文件时，我没有收到任何错误消息，我也没有得到任何输出。我做了很多研究，但我似乎无法弄清楚如何让它发挥作用。请帮忙！

我的服务器代码在这里

from socket import *
import random


def main():
    Ssocket = socket(AF_INET, SOCK_DGRAM )
    Ssocket.bind(('', 2014))
    print("I will be waiting on port" , 2014)

    while True:
        RandNum = random.randint(0,10)
        data , clientAddress = Ssocket.recvfrom(1024)
        newData =  data.upper()



        if randNum < 4:
            print ("packet lost")
            continue

        Ssocket.sendto(newData, clientAddress)
    main()

我的客户端代码在

之下

from socket import*
from datetime import datetime
from time import time

def main():
    print (" the program is running  ")

    serverName = 'localhost'
    port = 2014
    Csocket = socket(socket.AF_INET, socket.SOCK_DGRAM)
    data = ' ping'
    #data = input("Enter a message in lowercase")

    LastPing = 10
    count = 0
    Csocket.settimeout(1)
    print ("Attempting to send " , count , "messages" )

    while count  < LastPing:
        count = count + 1
        startTime = time.time()
        print("The current time is: " , startTime , " and this is message
              number: " , count)
        Csocket.sendto(data, (serverName, port))

        try:
            newData, clientAddress = Csocket.recvfrom(1024)
            RTT = ((time.time()) - startTime)
            print (newData)
            print (RTT)
        except socket.timeout:
            print(" Request timed out ")
    print ("the program is done")

Answer 1

修改服务器代码和客户端代码，如下所示： Server.py

from socket import *
import random
def main():
    ssocket = socket(AF_INET, SOCK_DGRAM )
    ssocket.bind(('', 2014))
    print("I will be waiting on port" , 2014)

    while True:
        RandNum = random.randint(0,10)
        data , clientAddress = ssocket.recvfrom(1024)
        newData =  data.upper()



        if RandNum < 4:
            print ("packet lost")
            continue

        ssocket.sendto(newData, clientAddress)
main()

Client.py

from socket import *
import datetime
import time

def main():
    serverName = 'localhost'
    port = 2014
    Csocket = socket(AF_INET, SOCK_DGRAM)
    data = ' ping'
    #data = input("Enter a message in lowercase")

    LastPing = 10
    count = 0
    Csocket.settimeout(1)
    print ("Attempting to send " , count , "messages" )

    while count  < LastPing:
        count = count + 1
        startTime = time.time()
        print("The current time is: " , startTime , " and this is message number: " , count)
        Csocket.sendto(data, (serverName, port))

        try:
            newData, clientAddress = Csocket.recvfrom(1024)
            RTT = ((time.time()) - startTime)
            print (newData)
            print (RTT)
        except timeout:
            print(" Request timed out ")
        except Exception as e:
            print e
    print ("the program is done")
main()

Answer 2

最终通过卸载我的python和pyscripter来解决它，因为部分问题是因为我使用的是python gui和一个非对应的pyscripter。然后我安装了python 2.7.5和pyscripter 2.5.3。在pyscripter中运行服务器，在python shell中运行客户端。为我工作得很好！

udp ping客户端和服务器python代码不打印任何/通信

2 个答案: