import httplib2
import subprocess
import time
import dns.resolver

tests = [
    {"host": "cdn.example.com", "path": "/path/to/somebigfile.js", "ip": "x.x.x.x"},
    {"host": "cdn2.example.com", "path": "/path/to/somebigfile.js", "ip": None},
    ]



for testfile in tests:
    res = res = dns.resolver.Resolver()
    if testfile["ip"] is None:
        ip = res.query(testfile["host"])[0].address
    else:
        ip = testfile["ip"]

    url = "http://%s%s" %(ip, testfile["path"])
    print ip, url

    dumpc = "tcpdump host %s  > %s.txt" %(ip, testfile["host"])
    print dumpc


    p = subprocess.Popen(["tcpdump", "-w", "%s.cap" %( testfile["host"]), "-s", "0", "host", ip ], stdout=subprocess.PIPE)

    print p
    time.sleep(2)
    h = httplib2.Http()
    resp, origin = h.request(url, headers={'Host':testfile['host'] , 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1'})
    h = None
    print resp
    time.sleep(5)
    p.terminate()