一、参考

BaseHTTPServer wiki

二、名词解释

三、正文

1. http 协议

1.1 server 端

使用 BaseHTTPServer 构造简单的 server 端，用于接收 http GET 请求，传输文件

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer


class MyHandler(BaseHTTPRequestHandler):

    def do_GET(self):
        print('--get file--', self.path)
        mime_type = 'application/pdf'
        file_name = self.path.split('/')[-1]
        f = open(self.path)
        self.send_response(200)
        self.send_header('Content-type', mime_type)
        self.send_header('Content-Disposition', 'attachment; filename=%s' % file_name)
        self.end_headers()
        self.wfile.write(f.read())
        f.close()
        return


try:
    server = HTTPServer(('server_a_host', server_a_port), MyHandler)
    server.serve_forever()
except Exception as e:
    print('error', str(e))
~

1.2 client 端

使用 requests 模块，直接构造 http GET 请求

import requests


def get_file(file_path):
    print('---start get file---', file_path)
    url = 'http://server_a_host:server_a_port'
    url = url + file_path
    res = requests.get(url=url)
    print(res.status_code, res.text)


if __name__ == '__main__':
    file_path = '/data/test.pdf'
    get_file(file_path=file_path)

1.3 tcpdump 录制 pcap 包

在 client server 中录制接收到的 http 文件流量包

tcpdump -i network_card_a 'host server_a_host and port server_a_port' -w /tmp/http_test.pcap