检查 python 中文件何时完成下载（套接字编程）

Question

How could I keep track of the progress of a file download using socket programming with TCP client/server logic to continue code flow without a infinite while loop?

Answer 1

If you can parse the headers manually you can get the file size, in content-length field, total iterations will be content_length / recv_buffer_size. For example if you receive 1024 bytes at a time and file size is 4096, then number of iterations = 4096/1024 = 4.

    total_length = content_length / buffer_size
    progressbar.set_length(total_length)   #some imaginary library
    for i in range(total_length):
      data = socket.recv(buffer_size)
      if data :
        file.write(data)
        progressbar.update(1)   #some imaginary progress-bar library
    file.close()