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I'm trying to extract all the URL network requests from a website and establish a relationship of hierarchy between them i.e. if one URL request is generating another request. Something like a chain of requests.
As you know, in the Network panel, there is a field called "Initiator" in the Requests table which tells you the origin or parent of a specific request (if there's any). Manually, I can use the browser, go to the Network panel in the developer tools, load the website and download the resulting HAR file. For example:
{
"startedDateTime": "2019-11-05T17:38:46.775Z",
"time": 15.676000155508518,
"request": {
"method": "POST",
"url": "https://www.google.com/gen_204?oq=&gs_l=psy-ab.22...0.0..847450...0.0..0.0.0.......0......gws-wiz.",
"httpVersion": "http/2.0",
"headers": [
{
"name": ":path",
"value": "/gen_204?oq=&gs_l=psy-ab.22...0.0..847450...0.0..0.0.0.......0......gws-wiz."
},
{
"name": "sec-fetch-mode",
"value": "no-cors"
},
{
"name": "origin",
"value": "https://www.google.com"
},
{
"name": "accept-encoding",
"value": "gzip, deflate, br"
},
{
"name": "accept-language",
"value": "en-GB,en;q=0.9,en-US;q=0.8,es-US;q=0.7,es;q=0.6"
},
{
"name": "user-agent",
"value": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/76.0.3809.100 Chrome/76.0.3809.100 Safari/537.36"
},
{
"name": "content-type",
"value": "text/plain;charset=UTF-8"
},
{
"name": "accept",
"value": "*/*"
},
{
"name": "referer",
"value": "https://www.google.com/"
},
{
"name": ":authority",
"value": "www.google.com"
},
{
"name": "cookie",
"value": "CONSENT=YES+GB.en+20160414-00-0; SEARCH_SAMESITE=CgQIg44B; ANID=AHWqTUlE3OPRfM5R1dtW0XvyIu2NOdLWoSHEgFemsFslXQTIzFKFCL-7kTtDZAr_; NID=190=Ezp7tXRaU_Rs2BS9RprlsS9QN9-PcwpYNSLwaOVGVFFp6pWepIjDqsYlgyLqb2eATn6HwUNs-SmgzAmtEm63fgX-YWVgbOyX7GU1esPamrN-GWXfwmXyrsqsTBOOQTzsHB3Q89tATDNQE_OKGd0YgCxMp9m9QXke2BJANdKdBYujl-g5tS8ZXcq0pw; 1P_JAR=2019-11-05-17; DV=o32RqCcqMlgsAJonGalrPPWlv0DK4xZ24gV5ztaaewMAAAA"
},
{
"name": ":scheme",
"value": "https"
},
{
"name": "sec-fetch-site",
"value": "same-origin"
},
{
"name": "content-length",
"value": "0"
},
{
"name": ":method",
"value": "POST"
}
],
"queryString": [
{
"name": "oq",
"value": ""
},
{
"name": "gs_l",
"value": "psy-ab.22...0.0..847450...0.0..0.0.0.......0......gws-wiz."
}
],
"cookies": [
{
"name": "CONSENT",
"value": "YES+GB.en+20160414-00-0",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "SEARCH_SAMESITE",
"value": "CgQIg44B",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "ANID",
"value": "AHWqTUlE3OPRfM5R1dtW0XvyIu2NOdLWoSHEgFemsFslXQTIzFKFCL-7kTtDZAr_",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "NID",
"value": "190=Ezp7tXRaU_Rs2BS9RprlsS9QN9-PcwpYNSLwaOVGVFFp6pWepIjDqsYlgyLqb2eATn6HwUNs-SmgzAmtEm63fgX-YWVgbOyX7GU1esPamrN-GWXfwmXyrsqsTBOOQTzsHB3Q89tATDNQE_OKGd0YgCxMp9m9QXke2BJANdKdBYujl-g5tS8ZXcq0pw",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "1P_JAR",
"value": "2019-11-05-17",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "DV",
"value": "o32RqCcqMlgsAJonGalrPPWlv0DK4xZ24gV5ztaaewMAAAA",
"expires": null,
"httpOnly": false,
"secure": false
}
],
"headersSize": -1,
"bodySize": 0
},
"response": {
"status": 204,
"statusText": "",
"httpVersion": "http/2.0",
"headers": [
{
"name": "date",
"value": "Tue, 05 Nov 2019 17:38:46 GMT"
},
{
"name": "server",
"value": "gws"
},
{
"name": "x-frame-options",
"value": "SAMEORIGIN"
},
{
"name": "content-type",
"value": "text/html; charset=UTF-8"
},
{
"name": "status",
"value": "204"
},
{
"name": "alt-svc",
"value": "quic=\":443\"; ma=2592000; v=\"46,43\",h3-Q050=\":443\"; ma=2592000,h3-Q049=\":443\"; ma=2592000,h3-Q048=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000"
},
{
"name": "content-length",
"value": "0"
},
{
"name": "x-xss-protection",
"value": "0"
}
],
"cookies": [],
"content": {
"size": 0,
"mimeType": "text/html"
},
"redirectURL": "",
"headersSize": -1,
"bodySize": -1,
"_transferSize": 54
},
"cache": {},
"timings": {
"blocked": 1.1320006029605865,
"dns": -1,
"ssl": -1,
"connect": -1,
"send": 0.16199999999999992,
"wait": 14.122000366747379,
"receive": 0.25999918580055237,
"_blocked_queueing": 0.5990006029605865
},
"serverIPAddress": "216.58.204.68",
"_initiator": {
"type": "script",
"stack": {
"callFrames": [
{
"functionName": "s_1pb",
"scriptId": "129",
"url": "https://www.google.com/xjs/_/js/k=xjs.s.en_GB.UISl_YucLj8.O/ck=xjs.s.or8k_ixGu54.L.W.O/m=Fkg7bd,HcFEGb,IvlUe,MC8mtf,OF7gzc,RMhBfe,T4BAC,TJw5qb,TbaHGc,Y33vzc,cdos,hsm,iDPoPb,jsa,mvYTse,tg8oTe,uz938c,vWNDde,ws9Tlc,yQ43ff,d,csi/am=BAAAsAjYuwOC_L8VAAQAfAYAAAFuwQYLhCGhYqwOEAE/d=1/dg=2/br=1/ct=zgms/rs=ACT90oGdwE1ooFdbHyz-Vk2BhYjwAv-QDQ",
"lineNumber": 2323,
"columnNumber": 376
},
In this case, the URL https://www.google.com/gen_204?oq=&gs_l=psy-ab.22... is initiated by the URL https://www.google.com/xjs/_/js/k=xjs.s.en_GB.UISl.... You can see this information in the key "Initiator" -> "callFrames" -> "url".
The idea is to obtain this information (URLs that are calling others) or download the HAR file automatically using Selenium. I have tried this:
1. Selenium + browsermob proxy Problem: The resulting HAR files doesn't have the "Initiator" field and there's no way to connect initiator requests and their dependencies.
2. Selenium Performance Logs I am using this code to get the performance logs from Selenium:
caps = DesiredCapabilities.CHROME
caps['loggingPrefs'] = {'performance': 'ALL'}
chrome_options = webdriver.ChromeOptions()
driver = webdriver.Chrome(driver_path,desired_capabilities=caps)
driver.get("http://google.com")
browser_log = driver.get_log('performance')
Here, the only method where the "initiator" field can be found is in the "Network.requestWillBeSent" method which has a URL but it's not related to another one. Seems that each "message" field is independent and again, there's no way to connect initiator requests and their dependencies.
driver = webdriver.Chrome('/path/to/chromedriver)
driver.get('https://www.google.com');
log = driver.execute_script("return window.performance.getEntries();")
#ANOTHER WAY
#log = driver.execute_script("var performance = window.performance || window.mozPerformance || window.msPerformance || window.webkitPerformance || {}; var network = performance.getEntries() || {}; return network;")
The resulting log is completely different to a HAR file or a performance log and it doesn't have any information that can be used to relate requests. Example:
{
"startTime": 0,
"initiatorType": "navigation",
"unloadEventStart": 0,
"fetchStart": 69.29999962449074,
"duration": 1311.3000001758337,
"responseStart": 172.89999965578318,
"nextHopProtocol": "h2",
"transferSize": 68052,
"connectStart": 70.19999995827675,
"domainLookupStart": 70.19999995827675,
"redirectStart": 0,
"domContentLoadedEventEnd": 504.90000005811453,
"responseEnd": 190.7999999821186,
"requestStart": 100.49999970942736,
"type": "navigate",
"secureConnectionStart": 80.40000032633543,
"connectEnd": 99.99999962747097,
"redirectCount": 0,
"workerStart": 0,
"decodedBodySize": 233300,
"loadEventStart": 1304.8000000417233,
"encodedBodySize": 67329,
"serverTiming": [],
"entryType": "navigation",
"domInteractive": 487.699999473989,
"domContentLoadedEventStart": 487.80000023543835,
"redirectEnd": 0,
"name": "https://www.google.com/?gws_rd=ssl",
"domainLookupEnd": 70.19999995827675,
"unloadEventEnd": 0,
"loadEventEnd": 1311.3000001758337,
"domComplete": 1303.3999996259809,
"toJSON": {}
},
{
"initiatorType": "img",
"fetchStart": 298.20000007748604,
"duration": 14.100000262260437,
"responseStart": 310.70000026375055,
"responseEnd": 312.3000003397465,
"transferSize": 6146,
"connectStart": 298.20000007748604,
"domainLookupStart": 298.20000007748604,
"redirectStart": 0,
"toJSON": {},
"requestStart": 299.80000015348196,
"secureConnectionStart": 0,
"connectEnd": 298.20000007748604,
"workerStart": 0,
"decodedBodySize": 5969,
"startTime": 298.20000007748604,
"encodedBodySize": 5969,
"serverTiming": [],
"entryType": "resource",
"redirectEnd": 0,
"name": "https://www.google.com/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png",
"domainLookupEnd": 298.20000007748604,
"nextHopProtocol": "h2"
},
Therefore, I think the HAR file downloaded from the developer tools Network panel is the only source of information that allows to establish relationships between URL requests. Since I'm crawling many websites, I need to automatise the process but I can't find a way to do it.
Any ideas about downloading the HAR files automatically of extracting the info I need using Selenium directly would be appreciated.
312
You can fetch the _initiator data from the page's raw_entry.
with open('at.har', 'r') as f:
har_parser = HarParser(json.loads(f.read()))
pages_root = har_parser.pages[0]
initiator_dict = {}
for page in pages_root:
if "url" in initiator:
initiator_dict[page.request.url] = initiator['url']
res = defaultdict(list)
for key, val in sorted(initiator_dict.items()):
res[val].append(key)
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