使用python的socket包,基于UDP传输文件,并且显示传输时间和剩余传输文件的百分比
时间: 2024-05-15 20:16:53 浏览: 13
以下是一个基于UDP传输文件的Python代码示例,它还显示了传输时间和剩余传输文件的百分比:
```python
import socket
import time
import os
def send_file(filename, host, port):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.settimeout(5.0)
# Get file size
filesize = os.path.getsize(filename)
# Send file size to receiver
sock.sendto(str(filesize).encode(), (host, port))
# Open file and send contents
with open(filename, 'rb') as f:
bytes_sent = 0
start_time = time.time()
while True:
# Read data from file
data = f.read(1024)
# Check if end of file
if not data:
break
# Send data to receiver
sock.sendto(data, (host, port))
# Update bytes_sent and display progress
bytes_sent += len(data)
percent_complete = (bytes_sent / filesize) * 100
time_elapsed = time.time() - start_time
time_remaining = (filesize - bytes_sent) / (bytes_sent / time_elapsed)
print("Sent {:.2f}% of file, {:.2f} seconds elapsed, {:.2f} seconds remaining".format(percent_complete, time_elapsed, time_remaining))
sock.close()
# Example usage
send_file("example.txt", "127.0.0.1", 12345)
```
在这个示例中,我们首先使用`os.path.getsize()`函数获取文件的大小,并将其发送给接收器。然后,我们在循环中读取文件的内容,将其发送给接收器,并更新进度信息。我们还使用`time.time()`函数计算传输时间,并计算剩余传输文件的时间估计。最后,我们关闭套接字并完成传输。