Python Selenium Webdriver - change proxy settings on the fly
I am currently successfully using the code below to use a proxy with a Selenium web server. Unfortunately, I cannot get the proxy settings to change without restarting the whole browser. I was hoping that just updating the proxy settings like I did to set the proxy would change the proxy, but it doesn't seem to work. Any help on this would be greatly appreciated.
profile = webdriver.FirefoxProfile()
profile.set_preference("network.proxy.type", 1)
profile.set_preference("network.proxy.http", proxyAddress)
profile.set_preference("network.proxy.http_port", proxyPort)
profile.update_preferences()
driver = webdriver.Firefox(firefox_profile=profile)
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This is a bit old question. But it is actually possible to dynamically change proxies through the " hacky way " I'm going to use Selenium JS with Firefox, but you can follow it in the language you want.
Step 1: Visit "about: config"
driver.get("about:config");
Step 2: Run a script that will change the proxy
var setupScript=`var prefs = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranch);
prefs.setIntPref("network.proxy.type", 1);
prefs.setCharPref("network.proxy.http", "${proxyUsed.host}");
prefs.setIntPref("network.proxy.http_port", "${proxyUsed.port}");
prefs.setCharPref("network.proxy.ssl", "${proxyUsed.host}");
prefs.setIntPref("network.proxy.ssl_port", "${proxyUsed.port}");
prefs.setCharPref("network.proxy.ftp", "${proxyUsed.host}");
prefs.setIntPref("network.proxy.ftp_port", "${proxyUsed.port}");
`;
//running script below
driver.executeScript(setupScript);
//sleep for 1 sec
driver.sleep(1000);
Where $ {abcd} is used where you put your variables, in the above example I am using ES6 which handles concatenation as shown, you can use other concatenation methods of your choice, depending on your ( SetupScript ) is a string containing script to run in ``)
Step 3: . Visit your site.
driver.get("https://whatismyip.com");
Explanation: The code above uses the Firefox API to change settings using JavaScript code.
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To set up proxies on the fly with Firefox:
def set_proxy(driver, http_addr='', http_port=0, ssl_addr='', ssl_port=0, socks_addr='', socks_port=0):
driver.execute("SET_CONTEXT", {"context": "chrome"})
try:
driver.execute_script("""
Services.prefs.setIntPref('network.proxy.type', 1);
Services.prefs.setCharPref("network.proxy.http", arguments[0]);
Services.prefs.setIntPref("network.proxy.http_port", arguments[1]);
Services.prefs.setCharPref("network.proxy.ssl", arguments[2]);
Services.prefs.setIntPref("network.proxy.ssl_port", arguments[3]);
Services.prefs.setCharPref('network.proxy.socks', arguments[4]);
Services.prefs.setIntPref('network.proxy.socks_port', arguments[5]);
""", http_addr, http_port, ssl_addr, ssl_port, socks_addr, socks_port)
finally:
driver.execute("SET_CONTEXT", {"context": "content"})
Using:
driver = webdriver.Firefox()
set_proxy(driver, http_addr="212.35.56.21", http_port=8080)
driver.get("http://....")
set_proxy(driver, http_addr="212.35.56.22", http_port=8888)
driver.get("http://....")
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