Hi Jiahao
From my understanding, you want to receive Ethernet data through a UDP port. However, you are facing "Unable to bind to LOCALHOST and LOCALPORT" error.
Here are some steps to troubleshoot and resolve the issue:
1. Verify Localhost and Localport
Ensure that LOCALHOST and LOCALPORT values are correct and not already in use by another application.
Check for Port Usage
Open Command Prompt and run:
netstat -aon | findstr :4098
If the port is in use, it will show up in the list. If it doesn't show up, the port is free.
2. Check Firewall Settings
Ensure that your firewall settings are not blocking the port. You may need to create an inbound rule to allow traffic through the specified port.
3. Verify Network Configuration
Ensure that your network configuration is correct and that the IP address 192.168.33.30 is reachable from your machine.
4. Use a Different Port
Try using a different port number. Sometimes, ports can be reserved or used by the system even if they don't show up in netstat.
5. Run with Administrative Privileges
Try running your application with administrative privileges to ensure it has the necessary permissions to bind to the port.
6. Update or Reinstall Network Drivers
Outdated or corrupted network drivers can cause binding issues. Ensure your network drivers are up to date.
7. Test with Another Tool
Use another tool like netcat or Wireshark to test if you can bind to the port and receive data.
Example Using netcat
To test with netcat, open Command Prompt and run:
nc -l -u -p 4098
This command will listen for UDP traffic on port 4098. If it works, the issue might be with your code or environment setup.
I hope this helps!
Sameer
