---

We can capture network traffic on a specific page using Selenium webdriver in Python. To achieve this, we take the help of the JavaScript Executor. Selenium can execute JavaScript commands with the help of the execute_script method.

JavaScript command to be executed is passed as a parameter to this method. To capture the network traffic, we have to pass the command: return window.performance.getEntries() as a parameter to the execute_script method.

Syntax

r = driver.execute_script("return window.performance.getEntries();")

Example

Code Implementation

from selenium import webdriver
#configure chromedriver path
driver = webdriver.Chrome(executable_path='F:\\Work Environment\\MyProject\\QA_Round\\chromedriver.exe')
#implicit wait
driver.implicitly_wait(0.5)
#url launch
driver.get("https://www.google.com/")
#JavaScript command to traffic
r = driver.execute_script("return window.performance.getEntries();")
for res in r:
    print(res['name'])
#browser close
driver.close()

Output:

DevTools listening on ws://127.0.0.1:56201/devtools/browser/4da6ea83-b808-4ec5-8ae3-5d9a644abfe6
https://www.google.com/
https://www.google.com/xjs//js/k=xjs.s.en_GB.jS3OP7-RYWo.O/am=CCgA2EAAAAQzAAAAAAAAAIBA4MEAIAASSQAAAAAAQQAARACXAwQAAADwEZ8BAv4GAEbQhAsAAAAAAAAIwCXFUINEQQAIAAAAABCrqSsGgEAg/d=1/ed=1/dg=2/esmo=1/br=1/rs=ACT90oHGOS_vgEofFOFQIJLil3vVNM6d2g/m=cdos,dpf,hsm,jsa,d,csi https://www.google.com/logos/doodles/2022/get-vaccinated-wear-a-mask-save-lives-january-17-copy-6753651837109683-law.gif https://www.google.com/images/searchbox/desktop_searchbox_sprites318_hr.webp first-paint first-contentful-paint https://www.gstatic.com/og//js/k=og.qtm.en_US.9pElbIcw614.O/rt=j/m=qabr,q_dnp,qcwid,qapid,qald/exm=qaaw,qadd,qaid,qein,qhaw,qhbr,qhch,qhga,qhid,qhin,qhpr/d=1/ed=1/rs=AA2YrTsg7Vn-zTR579BY_X_YWcvF5v0w8g
https://www.gstatic.com/og//ss/k=og.qtm.ofT4jE96td0.L.W.O/m=qcwid/excm=qaaw,qadd,qaid,qein,qhaw,qhbr,qhch,qhga,qhid,qhin,qhpr/d=1/ed=1/ct=zgms/rs=AA2YrTvubo9qkY4L_hGiF_giXJgemAw0Bw https://www.google.com/gen_204?s=webhp&t=aft&atyp=csi&ei=XfzmYcrbD7WD4-EP-PSZwAY&rt=wsrt.1279,aft.212,afti.212,prt.188&imn=2&ima=1&imad=0&aftp=620&bl=UJOX O7jPNb kDcP9b https://www.google.com/complete/search?q&cp=0&client=gws-wiz&xssi=t&hl=en-IN&authuser=0&psi=XfzmYcrbD7WD4-EP-PSZwAY.1642527829192&nolsbt=1&dpr=1 https://www.google.com/xjs//js/k=xjs.s.en_GB.jS3OP7-RYWo.O/ck=xjs.s.O9zdDYGJ4io.L.W.O/am=CCgA2EAAAAQzAAAAAAAAAIBA4MEAIAASSQAAAAAAQQAARACXAwQAAADwEZ8BAv4GAEbQhAsAAAAAAAAIwCXFUINEQQAIAAAAABCrqSsGgEAg/d=1/exm=cdos,csi,d,dpf,hsm,jsa/esmo=1/ed=1/dg=2/br=1/rs=ACT90oEY3toiTZYMSoFCT5U_006iXLyKLw/ee=yxTchf:KUM7Z;qddgKe:x4FYXe;uY49fb:COQbmf;wR5FRb:TtcOte;iFQyKf:QIhFr;dIoSBb:ZgGg9b;eBAeSb:Ck63tb;g8nkx:U4MzKc;wQlYve:aLUfP;kbAm9d:MkHyGd;F9mqte:UoRcbe;sTsDMc:kHVSUb;vfVwPd:OXTqFb;dtl0hd:lLQWFe;q92ire:wPVhqc;pXdRYb:JKoKVe;KpRAue:Tia57b;EVNhjf:pw70Gc;nAFL3:s39S4;LQlyHd:KJbvFf;aZ61od:arTwJ;JXS8fb:Qj0suc;rQSrae:C6D5Fc;qavrXe:zQzcXe;pNsl2d:j9Yuyc;UDrY1c:eps46d;nKl0s:xxrckd;Nyt6ic:jn2sGd;w3bZCb:ZPGaIb;imqimf:jKGL2e;KQzWid:mB4wNe;Np8Qkd:Dpx6qc;BjwMce:cXX2Wb;oGtAuc:sOXFj;whEZac:iuHkw;Fmv9Nc:O1Tzwc;hK67qb:QWEO5b;jVtPve:wQ95P;R4IIIb:QWfeKf;xbe2wc:wbTLEd;tosKvd:ZCqP3;NSEoX:lazG7b;kCQyJ:ueyPK;oSUNyd:fTfGO;SJsSc:H1GVub;SMDL4c:fTfGO;NPKaK:PVlQOd;zOsCQe:Ko78Df;WCEKNd:I46Hvd;LBgRLc:XVMNvd;TxfV6d:YORN0b;GleZL:J1A7Od;qaS3gd:yiLg6e;VGRfx:VFqbr;aAJE9c:WHW6Ef;BgS6mb:fidj5d;z97YGf:oug9te;CxXAWb:YyRLvc;Pguwyb:Xm4ZCd;VN6jIc:ddQyuf;SLtqO:Kh1xYe;WDGyFe:jcVOxd;DULqB:RKfG5c;gaub4:TN6bMe;DpcR3d:zL72xf;hjRo6e:F62sG;w9w86d:dt4g2b;lkq0A:Z0MWEf;eHDfl:ofjVkb;SNUn3:x8cHvb;LEikZe:byfTOb,lsjVmc;io8t5d:sgY6Zb;j7137d:KG2eXe;Oj465e:KG2eXe;sP4Vbe:VwDzFe;kMFpHd:blwjVc/m=DhPYme,EkevXb,GU4Gab,NzU6V,aa,abd,async,dvl,fKZehd,mu,pHXghd,sb_wiz,sf,sonic,spch?xjs=s1
https://www.google.com/client_204?&atyp=i&biw=1034&bih=575&ei=XfzmYcrbD7WD4-EP-PSZwAY
https://www.google.com/xjs//js/k=xjs.s.en_GB.jS3OP7-RYWo.O/ck=xjs.s.O9zdDYGJ4io.L.W.O/am=CCgA2EAAAAQzAAAAAAAAAIBA4MEAIAASSQAAAAAAQQAARACXAwQAAADwEZ8BAv4GAEbQhAsAAAAAAAAIwCXFUINEQQAIAAAAABCrqSsGgEAg/d=1/exm=DhPYme,EkevXb,GU4Gab,NzU6V,aa,abd,async,cdos,csi,d,dpf,dvl,fKZehd,hsm,jsa,mu,pHXghd,sb_wiz,sf,sonic,spch/esmo=1/ed=1/dg=2/br=1/rs=ACT90oEY3toiTZYMSoFCT5U_006iXLyKLw/ee=yxTchf:KUM7Z;qddgKe:x4FYXe;uY49fb:COQbmf;wR5FRb:TtcOte;iFQyKf:QIhFr;dIoSBb:ZgGg9b;eBAeSb:Ck63tb;g8nkx:U4MzKc;wQlYve:aLUfP;kbAm9d:MkHyGd;F9mqte:UoRcbe;sTsDMc:kHVSUb;vfVwPd:OXTqFb;dtl0hd:lLQWFe;q92ire:wPVhqc;pXdRYb:JKoKVe;KpRAue:Tia57b;EVNhjf:pw70Gc;nAFL3:s39S4;LQlyHd:KJbvFf;aZ61od:arTwJ;JXS8fb:Qj0suc;rQSrae:C6D5Fc;qavrXe:zQzcXe;pNsl2d:j9Yuyc;UDrY1c:eps46d;nKl0s:xxrckd;Nyt6ic:jn2sGd;w3bZCb:ZPGaIb;imqimf:jKGL2e;KQzWid:mB4wNe;Np8Qkd:Dpx6qc;BjwMce:cXX2Wb;oGtAuc:sOXFj;whEZac:iuHkw;Fmv9Nc:O1Tzwc;hK67qb:QWEO5b;jVtPve:wQ95P;R4IIIb:QWfeKf;xbe2wc:wbTLEd;tosKvd:ZCqP3;NSEoX:lazG7b;kCQyJ:ueyPK;oSUNyd:fTfGO;SJsSc:H1GVub;SMDL4c:fTfGO;NPKaK:PVlQOd;zOsCQe:Ko78Df;WCEKNd:I46Hvd;LBgRLc:XVMNvd;TxfV6d:YORN0b;GleZL:J1A7Od;qaS3gd:yiLg6e;VGRfx:VFqbr;aAJE9c:WHW6Ef;BgS6mb:fidj5d;z97YGf:oug9te;CxXAWb:YyRLvc;Pguwyb:Xm4ZCd;VN6jIc:ddQyuf;SLtqO:Kh1xYe;WDGyFe:jcVOxd;DULqB:RKfG5c;gaub4:TN6bMe;DpcR3d:zL72xf;hjRo6e:F62sG;w9w86d:dt4g2b;lkq0A:Z0MWEf;eHDfl:ofjVkb;SNUn3:x8cHvb;LEikZe:byfTOb,lsjVmc;io8t5d:sgY6Zb;j7137d:KG2eXe;Oj465e:KG2eXe;sP4Vbe:VwDzFe;kMFpHd:blwjVc/m=LtQuz,VsqSCc,fXO0xe,kQvlef?xjs=s2 https://www.google.com/gen_204?atyp=i&ei=XfzmYcrbD7WD4-EP-PSZwAY&dt19=2&zx=1642527829299 https://www.google.com/client_204?cs=1 https://apis.google.com//scs/abc-static//js/k=gapi.gapi.en.h3Hb0D_ghuM.O/m=gapi_iframes,googleapis_client/rt=j/sv=1/d=1/ed=1/rs=AHpOoo8HKYs3uYwO3D8vrT9sPLRNofSg0A/cb=gapi.loaded_0 https://www.google.com/xjs//js/k=xjs.s.en_GB.jS3OP7-RYWo.O/ck=xjs.s.O9zdDYGJ4io.L.W.O/am=CCgA2EAAAAQzAAAAAAAAAIBA4MEAIAASSQAAAAAAQQAARACXAwQAAADwEZ8BAv4GAEbQhAsAAAAAAAAIwCXFUINEQQAIAAAAABCrqSsGgEAg/d=1/exm=DhPYme,EkevXb,GU4Gab,LtQuz,NzU6V,VsqSCc,aa,abd,async,cdos,csi,d,dpf,dvl,fKZehd,fXO0xe,hsm,jsa,kQvlef,mu,pHXghd,sb_wiz,sf,sonic,spch/esmo=1/ed=1/dg=2/br=1/rs=ACT90oEY3toiTZYMSoFCT5U_006iXLyKLw/ee=yxTchf:KUM7Z;qddgKe:x4FYXe;uY49fb:COQbmf;wR5FRb:TtcOte;iFQyKf:QIhFr;dIoSBb:ZgGg9b;eBAeSb:Ck63tb;g8nkx:U4MzKc;wQlYve:aLUfP;kbAm9d:MkHyGd;F9mqte:UoRcbe;sTsDMc:kHVSUb;vfVwPd:OXTqFb;dtl0hd:lLQWFe;q92ire:wPVhqc;pXdRYb:JKoKVe;KpRAue:Tia57b;EVNhjf:pw70Gc;nAFL3:s39S4;LQlyHd:KJbvFf;aZ61od:arTwJ;JXS8fb:Qj0suc;rQSrae:C6D5Fc;qavrXe:zQzcXe;pNsl2d:j9Yuyc;UDrY1c:eps46d;nKl0s:xxrckd;Nyt6ic:jn2sGd;w3bZCb:ZPGaIb;imqimf:jKGL2e;KQzWid:mB4wNe;Np8Qkd:Dpx6qc;BjwMce:cXX2Wb;oGtAuc:sOXFj;whEZac:iuHkw;Fmv9Nc:O1Tzwc;hK67qb:QWEO5b;jVtPve:wQ95P;R4IIIb:QWfeKf;xbe2wc:wbTLEd;tosKvd:ZCqP3;NSEoX:lazG7b;kCQyJ:ueyPK;oSUNyd:fTfGO;SJsSc:H1GVub;SMDL4c:fTfGO;NPKaK:PVlQOd;zOsCQe:Ko78Df;WCEKNd:I46Hvd;LBgRLc:XVMNvd;TxfV6d:YORN0b;GleZL:J1A7Od;qaS3gd:yiLg6e;VGRfx:VFqbr;aAJE9c:WHW6Ef;BgS6mb:fidj5d;z97YGf:oug9te;CxXAWb:YyRLvc;Pguwyb:Xm4ZCd;VN6jIc:ddQyuf;SLtqO:Kh1xYe;WDGyFe:jcVOxd;DULqB:RKfG5c;gaub4:TN6bMe;DpcR3d:zL72xf;hjRo6e:F62sG;w9w86d:dt4g2b;lkq0A:Z0MWEf;eHDfl:ofjVkb;SNUn3:x8cHvb;LEikZe:byfTOb,lsjVmc;io8t5d:sgY6Zb;j7137d:KG2eXe;Oj465e:KG2eXe;sP4Vbe:VwDzFe;kMFpHd:blwjVc/m=aLUfP?xjs=s2

In Java:

package RK1.Building_a_selenium_project;

import org.testng.annotations.Test;

import java.util.Date;
import java.util.List;
import java.util.logging.Level;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.logging.LogEntry;
import org.openqa.selenium.logging.LogType;
import org.openqa.selenium.logging.LoggingPreferences;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.testng.Reporter;
import org.testng.annotations.AfterTest;

public class NetworkState {
	public static WebDriver driver;

  @SuppressWarnings("deprecation")
@Test
  public void test1() {
	  System.setProperty("webdriver.chrome.driver", "F:\\Work Environment\\MyProject\\QA_Round\\chromedriver.exe");

	  DesiredCapabilities caps = DesiredCapabilities.chrome();
	  ChromeOptions options = new ChromeOptions();
	  LoggingPreferences logPrefs = new LoggingPreferences();
	  logPrefs.enable(LogType.PERFORMANCE, Level.ALL);
	  options.setCapability( "goog:loggingPrefs", logPrefs );

	  caps.setCapability(CapabilityType.LOGGING_PREFS, logPrefs);
	  driver = new ChromeDriver(caps);
	  
	  
	  driver.navigate().to("https://www.google.com/");
	  List<LogEntry> entries = driver.manage().logs().get(LogType.BROWSER).getAll();

	  System.out.println(entries.size() + " " + LogType.PERFORMANCE + " log entries found");

	  for (LogEntry entry : entries) {
	      System.out.println(new Date(entry.getTimestamp()) + " " + entry.getLevel() + " " + entry.getMessage());

  }
  }
  
  @AfterTest
  public void afterTest() {
	  driver.close();
	  driver.quit();
	  Reporter.log("Test is complete: Exit");
  }
  


}