Localhost 11501 — New
One elegant solution is to assign a port number deterministically based on your project's name. You write a small function in your project's startup script (e.g., in manage.py for Django or app.js for Express) that does the following [12†L23-L29]:
If you are running multiple applications (e.g., Node.js backend, React frontend, Docker database), they cannot all use port 80. Port 1150111501 provides a unique identifier for a new, specific service.
Nothing is running on port 11501. Solution: localhost 11501 new
If a service is running on this port, you can access it by typing the following into your web browser’s address bar:
Open Task Manager, go to the "Details" tab, and find that PID to see the app name. On macOS/Linux: Open Terminal. Type: lsof -i :11501 One elegant solution is to assign a port
I didn’t recognize the process. No label, no friendly name — just a PID and a port I’d never assigned.
def do_POST(self): form = cgi.FieldStorage( fp=self.rfile, headers=self.headers, environ='REQUEST_METHOD': 'POST' ) file = form['file'] filename = os.path.basename(file.filename) with open(filename, 'wb') as f: f.write(file.file.read()) self.send_response(200) self.end_headers() self.wfile.write(b"File uploaded successfully") Nothing is running on port 11501
While ports can be used by any software, 11501 is frequently associated with: Acronis Cyber Protect agents for local backup management.
Localhost is a hostname that refers to the current device used to access it. It is used to access network services running on the host via the loopback network interface. When you type localhost into your browser, your computer talks to itself. It is a safe, sandboxed environment for testing software without exposing it to the public internet.
import hashlib project_name = "my_new_app" # Convert the name to an integer hash hash_int = int(hashlib.md5(project_name.encode()).hexdigest(), 16) # Map it to a port between 1024 and 65535 port = 1024 + (hash_int % 64512) print(f"Your project should run on port: port")
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