Question

我正在尝试从python中的TCP服务器接收数据。我尝试在服务器上打开一个文件，在阅读其内容后，尝试将其发送到TCP客户端。当我尝试首先在服务器端打印数据时，从文件中正确读取数据，但客户端没有收到任何数据。 PS。我是网络编程的初学者。

Server.py

import socket
import os
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(("", 5000))
server_socket.listen(5)

client_socket, address = server_socket.accept()
print ("Conencted to - ",address,"\n")
data = client_socket.recv(1024).decode()
print ("Filename : ",data)
fp = open(data,'r')
string = fp.read()
fp.close()
print(string)
size = os.path.getsize(data)
size = str(size)
client_socket.send(size.encode())
client_socket.send(string.encode())
client_socket.close()

Client.py

import socket,os
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect(("", 5000))
size = 1024

print ("Your filename : \n")
string = input()
client_socket.send(string.encode())
size = client_socket.recv(1024).decode()
print ("The file size is - ",size[0:2]," bytes")
size = int(size[0:2])
string = client_socket.recv(size).decode()
print ("\nFile contains : ")
print (string)
client_socket.close();

Answer 1

在while循环中添加Accept（），如下所示。

正确：
  client_socket，address = server_socket.accept（）
  print（“Conencted to - ”，address，“\ n”）
  ......

Answer 2

尝试：

#Get just the two bytes indicating the content length - client_socket.send(size.encode())

buffer = client_socket.recv(2)
size = len(buffer) 
print size
print ("The file size is - ",buffer[0:2]," bytes")

#Now get the remaining. The actual content

print buffer.decode()
buffer = client_socket.recv(1024)
size = len(buffer)
print size
print buffer.decode()

TCP客户端不从服务器检索数据

2 个答案: