手搓一台简单的网络损伤仪——弱网测试

**弱网测试工具开发**

在现今的互联网环境中，网络质量的好坏对用户体验有着直接影响。然而，很多时候，我们难以准确评估网络的状况，因为这些信息往往被屏蔽或伪造。因此，开发一个能够检测和分析网络损伤的工具变得尤为重要。

在本文中，我们将介绍如何手搓一台简单的网络损伤仪——弱网测试工具。这个工具可以帮助我们评估网络质量，并提供一些基本的分析功能。

**工具概述**

我们的弱网测试工具将基于以下几个方面：

1. **网络延迟检测**: 检测网络传输数据时的延迟时间。
2. **丢包率检测**: 检测网络中数据包的丢失率。
3. **连接稳定性检测**: 检测网络连接的稳定性。

**工具开发**

###1. 网络延迟检测首先，我们需要一个能够测量网络延迟的函数。我们可以使用 Python 的 `time` 模块来实现这一点。

import timedef measure_latency():
 start_time = time.time()
 # 发送一个请求，等待响应 response = requests.get(' /> end_time = time.time()
 return end_time - start_time

from scapy.all import *

def measure_packet_loss():
 # 发送一个请求，等待响应 response = requests.get(' /> # 使用 Scapy 来发送和接收包 packets_sent =1000 packets_received =0 for i in range(packets_sent):
 packet = IP(dst='8.8.8.8') / TCP(dport=80, seq=i)
 send(packet, verbose=False)
 response = sniff(count=1, timeout=1)
 if response:
 packets_received +=1 return (packets_sent - packets_received) / packets_sent *100

import psutildef measure_connection_stability():
 # 获取网络连接信息 connections = psutil.net_connections()
 stable_connections =0 for connection in connections:
 if connection.status == psutil.CONN_ESTABLISHED:
 stable_connections +=1 return stable_connections / len(connections) *100

import timefrom scapy.all import *
import requestsimport psutilclass WeakNetTester:
 def __init__(self):
 self.latency =0 self.packet_loss =0 self.connection_stability =0 def measure_latency(self):
 start_time = time.time()
 response = requests.get(' /> end_time = time.time()
 self.latency = end_time - start_time def measure_packet_loss(self):
 packets_sent =1000 packets_received =0 for i in range(packets_sent):
 packet = IP(dst='8.8.8.8') / TCP(dport=80, seq=i)
 send(packet, verbose=False)
 response = sniff(count=1, timeout=1)
 if response:
 packets_received +=1 self.packet_loss = (packets_sent - packets_received) / packets_sent *100 def measure_connection_stability(self):
 connections = psutil.net_connections()
 stable_connections =0 for connection in connections:
 if connection.status == psutil.CONN_ESTABLISHED:
 stable_connections +=1 self.connection_stability = stable_connections / len(connections) *100 def run_test(self):
 self.measure_latency()
 self.measure_packet_loss()
 self.measure_connection_stability()

# 创建一个 WeakNetTester 实例tester = WeakNetTester()
# 运行测试tester.run_test()
# 输出结果print(f"延迟：{tester.latency} ms")
print(f"丢包率：{tester.packet_loss}%")
print(f"连接稳定性：{tester.connection_stability}%")