代理服务器终极指南：优点、类型和开发示例

import requests
# Proxy server details (replace with actual proxy details)proxy_host = "your_proxy_host"proxy_port = your_proxy_portproxy_username = "your_proxy_username" (if username/password required)proxy_password = "your_proxy_password" (if username/password required)
# Website URL to accesstarget_url = "https://www.blockedwebsite.com"
# Build proxy dictionary (if username/password required)if proxy_username and proxy_password:    proxy_auth = requests.auth.HTTPBasicAuth(proxy_username, proxy_password)    proxies = {"http": f"http://{proxy_host}:{proxy_port}", "https": f"https://{proxy_host}:{proxy_port}"}else:    proxies = {"http": f"http://{proxy_host}:{proxy_port}", "https": f"https://{proxy_host}:{proxy_port}"}
try:    # Send request through the proxy    response = requests.get(target_url, proxies=proxies, auth=proxy_auth if proxy_username else None)    response.raise_for_status()  # Raise an exception for unsuccessful requests
    # Access the website content    print(response.content)
except requests.exceptions.RequestException as e:    print(f"Error accessing website: {e}")

from selenium import webdriverfrom selenium.webdriver.common.by import Byfrom fake_useragent import UserAgentfrom pyvirtualdisplay import Display  # Optional for headless scraping
# Proxy manager library (replace with your chosen library)from proxy_rotator import ProxyRotator
# Website URL to scrape and element selectortarget_url = "https://www.example-data.com"data_selector = ".product-item"
# Configure proxy manager (replace with your provider's details)proxy_rotator = ProxyRotator(provider_url="your_proxy_provider_url", username="your_username", password="your_password")
# Optional: Set up headless scraping with virtual displaydisplay = Display(visible=0, size=(800, 600))  # Comment out for non-headless executiondisplay.start()
# Create a new Chrome session with UserAgent and proxyuser_agent = UserAgent().chromechrome_options = webdriver.ChromeOptions()chrome_options.add_argument(f"user-agent={user_agent}")chrome_options.add_argument("--proxy-server=" + proxy_rotator.get_proxy())
driver = webdriver.Chrome(options=chrome_options)
try:    driver.get(target_url)
    # Extract data from the target elements    data_elements = driver.find_elements(By.CSS_SELECTOR, data_selector)    for element in data_elements:        # Process and extract desired data from each element
    # Rotate proxy after each scrape iteration (optional)    proxy_rotator.rotate()
except Exception as e:    print(f"Error during scraping: {e}")
finally:    driver.quit()    display.stop()  # Stop virtual display if used

from scapy.all import sniff, IP, TCP, Raw
def handle_packet(packet):    # Check if it's a TCP packet (modify for other protocols if needed)    if packet[TCP]:        print(f"Source IP: {packet[IP].src}")        print(f"Destination IP: {packet[IP].dst}")        print(f"Source Port: {packet[TCP].sport}")        print(f"Destination Port: {packet[TCP].dport}")        # Access packet data if needed (modify for specific use cases)        # data = packet[Raw]        # print(f"Packet Data: {data}")
# Set up the proxy server (modify IP address and port as needed)sniff(iface="eth0", prn=handle_packet, filter="tcp", store=False)