Python 客户端未收到数据

发布于 2024-12-12 19:49:10 字数 1648 浏览 4 评论 0原文

我对 Python 很陌生,有一个基本问题,网络套接字连接的客户端可以接收数据吗?在我的问题中,客户端是发起连接的人,这可能是显而易见的,但我想澄清一下。我问是因为我有另一个服务器和客户端(都是Python),允许服务器从客户端接收文件。它工作完美,但我无法获得客户端接收文件的示例。 Python 不断告诉我管道已损坏,我怀疑是因为在客户端我使用了 data = mysocket.recv(1024) 行。我怀疑客户端看不到任何数据流动,因此关闭了与服务器的连接。服务器将其视为破损的管道。服务器和客户端如下。

服务器:

 #libraries to import
 import socket
 import os
 import sys
 import M2Crypto as m2c

 #information about the server the size of the message being transferred
 server_address = '10.1.1.2'
 key_port = 8888
 max_transfer_block = 1024

 FILE = open("sPub.pem","r")

 #socket for public key transfer
 keysocket = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
 keysocket.bind((server_address, key_port))
 keysocket.listen(1)

 while 1:
         conn, client_addr = keysocket.accept()
         print 'connected by', client_addr
         #sends data to the client
         data = FILE.read()
         keysocket.sendall(data)
 keysocket.close()

客户端:

 # the specified libraries
 import socket
 import M2Crypto as m2c
 #file to be transferred
 FILE = open("test.txt", "r")
 #address of the server
 server_addr = '10.1.1.2'
 #port the server is listening on
 dest_port = 8888

 data = FILE.read()


 #Creates a socket for the transfer
 mysocket = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
 mysocket.connect( (server_addr, dest_port) )

 data = mysocket.recv(1024)
 print data
 #creates a new file to store the msg
 name = "serverPubKey.pem"

 #opens the new file and writes the msg to it
 FILE = open (name, "w")
 FILE.write(data)


 #closes the socket.
 mysocket.close()

对于此事,我将不胜感激。谢谢!

I am very new to Python and have a basic question, can a client side of a network socket connection make receive data? In my question, the client is the one who initiates the connection, which is probably obvious but I wanted to be clear. I ask because I have another server and client (both python) that allows the server to receive a file from the client. It works perfectly but I cannot get an example where the client receives a file. Python keeps telling me that the pipe has been broken and I suspect its because on the client side I use the line data = mysocket.recv(1024). My suspicion is that client doesn't see any data flowing and thus closes the connection to the server. The server sees it as a broken pipe. The server and client are below.

server:

 #libraries to import
 import socket
 import os
 import sys
 import M2Crypto as m2c

 #information about the server the size of the message being transferred
 server_address = '10.1.1.2'
 key_port = 8888
 max_transfer_block = 1024

 FILE = open("sPub.pem","r")

 #socket for public key transfer
 keysocket = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
 keysocket.bind((server_address, key_port))
 keysocket.listen(1)

 while 1:
         conn, client_addr = keysocket.accept()
         print 'connected by', client_addr
         #sends data to the client
         data = FILE.read()
         keysocket.sendall(data)
 keysocket.close()

Client:

 # the specified libraries
 import socket
 import M2Crypto as m2c
 #file to be transferred
 FILE = open("test.txt", "r")
 #address of the server
 server_addr = '10.1.1.2'
 #port the server is listening on
 dest_port = 8888

 data = FILE.read()


 #Creates a socket for the transfer
 mysocket = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
 mysocket.connect( (server_addr, dest_port) )

 data = mysocket.recv(1024)
 print data
 #creates a new file to store the msg
 name = "serverPubKey.pem"

 #opens the new file and writes the msg to it
 FILE = open (name, "w")
 FILE.write(data)


 #closes the socket.
 mysocket.close()

I would appreciate any help on the matter. Thanks!

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。

评论(2

后eg是否自 2024-12-19 19:49:12

另外,添加之前的评论,有时一个好的测试是重复接收几次。一次性捕获服务器发送的信息的可能性不大。

像这样的东西

nreceive = True#nreceive = Not Received
ticks = 0
f = None
while nreceive and ticks < 101:#try to get the info 100 times or until it's received
    ticks+=1
    try:
        f = mysocket.makefile('rb')
        if not f == None:
            nreceive = False
    except:
        pass
data = f.read(1024)

Also, adding onto the previous comment, a good test sometimes is to repeat the receive a few times. The chance of the one pass catching the information the server sends is unlikely.

something like this

nreceive = True#nreceive = Not Received
ticks = 0
f = None
while nreceive and ticks < 101:#try to get the info 100 times or until it's received
    ticks+=1
    try:
        f = mysocket.makefile('rb')
        if not f == None:
            nreceive = False
    except:
        pass
data = f.read(1024)
剑心龙吟 2024-12-19 19:49:11

在这样的应用程序中,有时绕过低级细节并使用 会很有帮助socket.makefile 及其更高级别的 API 代替。

在客户端关闭中,将: 替换

data = mysocket.recv(1024)

为:

f = mysocket.makefile('rb')
data = f.read(1024)           # or any other file method call you need

ftplib 的源代码< /a> 展示了如何在生产代码中执行此操作。

In applications like this, it is sometimes helpful to bypass the low level detail and use socket.makefile with its higher-level API instead.

In the client close, replace:

data = mysocket.recv(1024)

with:

f = mysocket.makefile('rb')
data = f.read(1024)           # or any other file method call you need

The source code for ftplib shows how to do this in production code.

~没有更多了~
我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
原文