Hey there, let's work through this problem step by step—those 405 errors can be tricky, but they usually point to missing setup steps before sending your POST request.

Why You're Seeing a 405 Error When Using POST #

That "HTTP Status 405" means the server isn't accepting POST requests directly to /login. But the fact that GET works makes total sense: modern login flows almost always require you to first initialize a session and grab security tokens via a GET request to the login page. Without these, the server sees your POST as an unauthorized, incomplete request and rejects it.

Step-by-Step Fix for the 405 Error #

Here's how to structure your Curl commands properly to mimic a browser's login flow:

1. First, grab the session cookie and CSRF token with a GET request
   This request tells the server you're starting a login session, and it will send back cookies plus a security token (usually called a CSRF token) that you need to include in your POST.

   # Save cookies to a file and show the full response to inspect the token
   curl -c cookies.txt -i https://www.foreclosure.com/login
   

   Look for a hidden form field or meta tag in the response HTML—common names are authenticity_token, csrf-token, or _csrf. For example, it might look like:

   <input type="hidden" name="_csrf" value="abc123XYZ...">
   

2. Extract the CSRF token programmatically
   Use a tool like grep or awk to pull the token value from the response. Adjust the command to match the token name you found:

   # Example for a hidden input named "_csrf"
   CSRF_TOKEN=$(curl -c cookies.txt https://www.foreclosure.com/login | grep -o 'name="_csrf" value="[^"]*"' | grep -o '[^"]*$')
   

3. Send the POST request with cookies and CSRF token
   Now include the saved cookies, the CSRF token, and your login credentials in the POST. Make sure to match the form field names exactly (check the login page's HTML for the correct name attributes on the username/password fields):

   curl -b cookies.txt -c cookies.txt -X POST https://www.foreclosure.com/login \
     -d "username=your_actual_username" \
     -d "password=your_actual_password" \
     -d "_csrf=$CSRF_TOKEN" \
     -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36" \
     -H "Content-Type: application/x-www-form-urlencoded"
   

   • -b cookies.txt: Loads the session cookies from your initial GET request
   • -c cookies.txt: Updates the cookie file with any new cookies from the response
   • The User-Agent header helps avoid bot detection (many sites block default Curl user agents)

Addressing "New Problems" After Using GET #

If the GET works but you're hitting issues afterward (like being redirected back to login, or getting an "invalid credentials" error even with correct info), check these things:

• Double-check form field names: Use your browser's DevTools (Network tab) to capture a real login request and see exactly what parameter names the server expects (e.g., maybe it's email instead of username).
• Verify the CSRF token is correctly extracted: If your token extraction command is wrong, you'll send an invalid value—print the $CSRF_TOKEN variable to confirm it's not empty or truncated.
• Check if the login endpoint is different: Sometimes the form submits to a different URL than /login (like /api/login or /login/submit). Look at the action attribute of the login form in the HTML.

内容的提问来源于stack exchange，提问作者Zach Rachedi