将文件从服务器容器下载到Docker中的客户端容器

Question

我有一个Python程序，客户端将文件上传到服务器，然后服务器将文件发送回客户端，或者客户端从服务器下载文件。我希望最终在用户定义的网络中使用Docker实现这一点

因此，我将客户机和服务器分别作为容器进行了容器化。出现的问题是，当我为它们执行docker run时，它没有显示任何结果或错误，它只是在命令行上，就像被卡住了一样，或者处于无限循环中。我将附加我正在使用/执行的代码和docker run命令

如何调试此问题

注意：这不是我的Python程序，我也不打算让它成为我的。我在互联网的某个公共论坛上找到了这段代码。我只是用它来测试Docker（我是Docker的初学者）

client.py和Dockerfile的代码

import socket
 
csFT = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
csFT.connect(("server", 8756))
 
text_file = "/client/send.txt"
 
#Send file
with open(text_file, 'rb') as fs: 
    #Using with, no file close is necessary, 
    #with automatically handles file close
    csFT.send(b'BEGIN')
    while True:
        data = fs.read(1024)
        print('Sending data', data.decode('utf-8'))
        csFT.send(data)
        print('Sent data', data.decode('utf-8'))
        if not data:
            print('Breaking from sending data')
            break
    csFT.send(b'ENDED')
    fs.close()
 
#Receive file
print("Receiving..")
with open(text_file, 'wb') as fw:
    while True:
        data = csFT.recv(1024)
        if not data:
            break
        fw.write(data)
    fw.close()
print("Received..")
 
csFT.close()

Dockerfile

FROM python:alpine3.10
COPY client.py /client/
COPY send.txt /client/
WORKDIR /client/
CMD python ./client.py

server.py和dockerfile的代码

import socket
 
ssFT = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ssFT.bind((socket.gethostname(), 8756))
ssFT.listen(1)
while True:
    (conn, address) = ssFT.accept()
    text_file = "/server/fileProj.txt"
 
    #Receive, output and save file
    with open(text_file, "wb") as fw:
        print("Receiving..")
        while True:
            print('receiving')
            data = conn.recv(32)
            if data == b'BEGIN':
                continue
            elif data == b'ENDED':
                print('Breaking from file write')
                break
            else:
                print('Received: ', data.decode('utf-8'))
                fw.write(data)
                print('Wrote to file', data.decode('utf-8'))
        fw.close()
        print("Received..")
 
    #Append and send file
    #print('Opening file ', text_file)
    with open(text_file, 'ab+') as fa:
        print('Opened file')
        print("Appending string to file.")
        string = b"Append this to file."
        fa.write(string)
        fa.seek(0, 0)
        print("Sending file.")
        while True:
            data = fa.read(1024)
            conn.send(data)
            if not data:
                break
        fa.close()
        print("Sent file.")
    break
ssFT.close()

Dockerfile

FROM python:alpine3.10
WORKDIR /server/
EXPOSE 8756
COPY server.py /server/
COPY fileProj.txt /server/
CMD python ./server.py

我在命令行上执行的命令是

docker network create mynet

docker run --name server -p 8756:8756 --network mynet server:1.0

docker run --name client --network mynet client:1.0