Python Selenium Webdriver - Changing proxy settings on the fly
This is a slightly old question. But it is actually possible to change the proxies dynamically thru a "hacky way" I am going to use Selenium JS with Firefox but you can follow thru in the language you want.
Step 1: Visiting "about:config"
driver.get("about:config");
Step 2 : Run script that changes 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 use ${abcd} is 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 language.(The SetupScript is a string containing the script to be runned enclosed by ``)
Step 3: : Visit your site
driver.get("https://whatismyip.com");
Explanation:the above code takes advantage of Firefox's API to change the preferences using JavaScript code.
To set a proxy 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"})
Usage:
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://....")