Entries in Har file is empty

[Fire-Knight]

I get empty Har file with this library.
I work with browsermob-proxy 0.8.0; robotframework 3.2.2; robotframework-browsermobproxylibrary 0.1.3; robotframework-selenium2library 3.0.0; selenium 3.141.0 and python 3.8.5 and chrome 88.0.4324.182 (64bit)
It can open proxy server, open brower and open right page, however, it will get har file with empty entries.

Here is empty Har

{"log": {"version": "1.2", "creator": {"name": "BrowserMob Proxy", "version": "2.1.4", "comment": ""}, "pages": [{"id": "google", "startedDateTime": "2021-02-28T22:00:02.929+08:00", "title": "google", "pageTimings": {"comment": ""}, "comment": ""}], "entries": [], "comment": ""}}

Here is my code

*** Settings ***
Metadata			VERSION		0.1
Library				Selenium2Library
Library				Collections
Library				OperatingSystem
Library				BrowserMobProxyLibrary
Suite Setup			Start Browser
Suite Teardown		Close Browsers

*** Variables ***
${PAGE_URL}                 https://www.baidu.com
${BROWSER}                  Chrome
      
*** Keywords ***
Start Browser
	[Documentation]         Start firefox browser
	Set Selenium Implicit Wait  10
	## Init BrowserMob Proxy
	Start Local Server      /home/wzl/ISCAS/robot/WorkSpace/Har/browsermob-proxy-2.1.4/bin/browsermob-proxy

	## Create dedicated proxy on BrowserMob Proxy
	${BrowserMob_Proxy}=	Create Proxy

	## Configure Webdriver to use BrowserMob Proxy
	${options} =      Evaluate     sys.modules['selenium.webdriver'].ChromeOptions()       sys, selenium.webdriver

	Call Method		${options}		add_argument	--proxy\=${BrowserMob_Proxy}
	create webdriver	${BROWSER}		chrome_options=${options}
      
Close Browsers
	Close All Browsers
	Stop Local Server
      
*** Test Cases ***

Check something
	[Documentation]         Check the page title
	New Har                 google
	Go to                   ${PAGE_URL}
	Input text    id=kw    robot framework
	click button    id=su   
	sleep  3s
	${har}=                 Get Har As JSON
	create file             ${EXECDIR}${/}file.har     ${har}
	log to console          Browsermob Proxy HAR file saved as ${EXECDIR}${/}file.har
	Log						har is ${har}

---

And I use BrowserMob Proxy directly with python, It can get right har file.
Code is here:

from browsermobproxy import Server
from selenium import webdriver
import time
import pprint
class ProxyManager:
    __BMP = "/home/wzl/ISCAS/robot/WorkSpace/Har/browsermob-proxy-2.1.4/bin/browsermob-proxy"
    def __init__(self):
        self.__server = Server(ProxyManager.__BMP)
        self.__client = None

    def start_server(self):
        self.__server.start();
        return self.__server
    
    def start_client(self):
        self.__client = self.__server.create_proxy(params={"trustAllServers": "true"})
        return self.__client
    
    @property
    def client(self):
        return self.__client
    
    @property
    def server(self):
        return self.__server
    
if "__main__" == __name__:
    proxy = ProxyManager()
    server = proxy.start_server()
    client = proxy.start_client()
    client.new_har("baidu.com")
    print(client.proxy)

    options = webdriver.ChromeOptions()
    options.add_argument("--proxy-server={}".format(client.proxy))
    driver = webdriver.Chrome(chrome_options = options)
    driver.get("https://www.baidu.com")
    time.sleep(3)

    pprint.pprint(client.har)

    server.stop()

---

I had tried some other way to use robotframework-BrowserMobProxyLibrary.
just like No log entries found for BrowserMobProxy With Robot Framework
and How to run BrowserMob Proxy with RobotFramework and Capture HAR files
, they all get empty entires.
Or with python2.7.18· and browsermob-proxy 0.8.0; robotframework 2.8.2; robotframework-browsermobproxylibrary 0.1.3; robotframework-selenium2library 1.7.0; selenium 2.53.6 andchrome 88.0.4324.182 (64bit)`
With windows10 and Ubuntu 20.04.2
They all show the situation same with above empty entires har file.
I do not know what's wrong happened。
Thanks in advance!

[WilliamHolmes]

@Fire-Knight Been a while, but can you remember finding a solution to this? I was trying to use the robot framework and browser mod proxy to record har, but like yourself end up with no entries in the har file, just the structure. (Thanks)

{
  "log": {
    "version": "1.2",
    "creator": {
      "name": "BrowserMob Proxy",
      "version": "2.1.4",
      "comment": ""
    },
    "pages": [
      {
        "id": "google",
        "startedDateTime": "2025-03-04T11:24:46.449Z",
        "title": "google",
        "pageTimings": {
          "comment": ""
        },
        "comment": ""
      }
    ],
    "entries": [],
    "comment": ""
  }
}