我正在学习TCP,正在尝试一个客户机/服务器程序。我的服务器端正在工作,但在客户端,我无法成功连接到服务器端。你知道吗
客户端的错误代码
第一个错误:
回溯(最近一次呼叫): “文件”tcpclient.py文件,第13行,在 客户端套接字.connect((服务器名,服务器端口)) TypeError:应为str、bytes或bytearray,而不是list
第二个错误:
回溯(最近一次呼叫): “文件”tcpclient.py文件,第34行,在 客户端套接字.send(clientSentence.encode(),服务器地址) TypeError:需要整数(获取类型tuple)
服务器代码:此代码成功运行。你知道吗
import sys
from socket import*
serverSocket = socket(AF_INET, SOCK_STREAM)
serversys = sys.argv
if len(serversys) == 1:
serverPort = 9999
else:
serverPort = serversys[1]
serverPort = int(serverPort)
serverSocket.bind(('', serverPort))
serverSocket.listen(1)
print ("The server is ready to receive.")
while True:
connectionSocket, addr = serverSocket.accept()
print ("Connection accepted from: ", addr)
clientSentence = connectionSocket.recv(1024).decode()
clientSentence, clientAddress = serverSockset.recv(1024)
clientSentence.decode()
connectionSocket.close()
if clientSentence[0].decode() == 'U':
serverSentence = clientSentence.upper()
connectionSocket.send(serverSentence[1:].encode(), clientAddress)
connectionSocket.close()
elif clientSentence[0].decode() == 'L':
serverSentence = clientSentence.lower()
connectionSocket.send(serverSentence[1:].encode(), clientAddress)
connectionSocket.close()
elif clientSentence[0].decode() == 'I':
serverSentence = clientSentence.title()
connectionSocket.send(serverSentence[1:].encode(), clientAddress)
connectionSocket.close()
客户端:这是发生这两个错误的地方。你知道吗
import sys
from socket import*
clientSocket = socket(AF_INET, SOCK_STREAM)
clientsys = sys.argv
serverName = clientsys[1:]
serverPort = clientsys[2:]
clientSocket.connect((serverName, serverPort)) #First Error
serverPort = [int(serverPort) for serverPort in serverPort]
serverAddress = (serverName, serverPort)
sentenceChoice = input("Enter U for UPPERCASE SENTENCE, L for lowercase sentence, \nor I for Initial Caps Sentence: ")
sentence = input("Enter sentence: ")
clientSentence = sentenceChoice+sentence
clientSocket.send(clientSentence.encode(), serverAddress) #Second Error
serverSentence = clientSocket.recv(1024)
print('From Server: ', serverSentence.decode())
clientSocket.close()
出现错误的原因是您正在使用列表切片从
sys.argv
查找服务器和端口:列表切片操作的结果始终是一个列表:
相反,请使用索引:
第一个错误是由于使用列表片作为服务器名称和端口造成的。更改为:
您的第二个错误是因为
socket.send()
不接受serverAddress
元组参数(您考虑的是socket.sendto()
?无论哪种方式,您都可以通过删除参数来修复:链接到
socket.send
文档:https://docs.python.org/3/library/socket.html#socket.socket.send你确定它应该是clientsys[2:]而不是clientsys[2]吗?你知道吗
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