Python语言实现WFQ算法,将这个项目编程三个例程,“发送者”、“接收者”和“路由器”。使用FlowID=1、权重=1和数据包大小1024启动发送端。几秒钟后,使用FlowID=2、权重=1和数据包大小512启动另一个发送器。再过几秒钟,使用FlowID=3、权重=2和数据包大小1024启动第三个发送方。接收者负责数据统计的部分,每次完成一个数据包时记录时间、流ID和数据包的大小。最后画出每个流上接收到的总字节与时间的图表。
时间: 2024-03-14 22:47:58 浏览: 26
这是一个比较复杂的项目,需要使用多线程和网络编程知识,以下是一个简单的示例代码,仅供参考:
发送者代码:
```python
import socket
import time
# 设置发送方的IP地址和端口号
sender_ip = '127.0.0.1'
sender_port = 8888
# 设置路由器的IP地址和端口号
router_ip = '127.0.0.1'
router_port = 9999
# 设置数据包的大小
packet_size_1 = 1024
packet_size_2 = 512
packet_size_3 = 1024
# 设置发送间隔时间
interval_1 = 0.01
interval_2 = 0.02
interval_3 = 0.03
# 创建发送端socket
sender_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# 发送第一个流的数据包
for i in range(1000):
data = b'1' * packet_size_1
sender_socket.sendto(data, (router_ip, router_port))
time.sleep(interval_1)
# 发送第二个流的数据包
for i in range(500):
data = b'2' * packet_size_2
sender_socket.sendto(data, (router_ip, router_port))
time.sleep(interval_2)
# 发送第三个流的数据包
for i in range(2000):
data = b'3' * packet_size_3
sender_socket.sendto(data, (router_ip, router_port))
time.sleep(interval_3)
```
接收者代码:
```python
import socket
import time
import threading
import matplotlib.pyplot as plt
# 设置接收方的IP地址和端口号
receiver_ip = '127.0.0.1'
receiver_port = 7777
# 创建接收端socket
receiver_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
receiver_socket.bind((receiver_ip, receiver_port))
# 定义接收数据的线程函数
def receive_data(flow_id):
total_bytes = 0
start_time = time.time()
while True:
data, address = receiver_socket.recvfrom(1024)
if data[0] == str(flow_id).encode('utf-8'):
total_bytes += len(data)
end_time = time.time()
print(f"Flow {flow_id}: {total_bytes} bytes received in {end_time - start_time} seconds")
plt.plot(end_time - start_time, total_bytes, 'bo')
plt.pause(0.001)
# 创建接收数据的线程
thread_1 = threading.Thread(target=receive_data, args=(1,))
thread_2 = threading.Thread(target=receive_data, args=(2,))
thread_3 = threading.Thread(target=receive_data, args=(3,))
# 启动线程
thread_1.start()
thread_2.start()
thread_3.start()
# 显示图表
plt.show()
```
路由器代码:
```python
import socket
import threading
# 设置路由器的IP地址和端口号
router_ip = '127.0.0.1'
router_port = 9999
# 创建路由器socket
router_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
router_socket.bind((router_ip, router_port))
# 定义WFQ算法
def wfq(packet_size, weight):
return packet_size * weight
# 定义处理数据包的函数
def process_packet(packet):
flow_id = int(packet[0])
packet_size = len(packet)
if flow_id == 1:
weight = 1
elif flow_id == 2:
weight = 1
elif flow_id == 3:
weight = 2
else:
weight = 1
delay = wfq(packet_size, weight)
time.sleep(delay)
return packet
# 定义处理数据包的线程函数
def handle_packet(packet):
packet = process_packet(packet)
router_socket.sendto(packet, ('127.0.0.1', 7777))
# 循环接收数据包
while True:
data, address = router_socket.recvfrom(1024)
thread = threading.Thread(target=handle_packet, args=(data,))
thread.start()
```
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