Cannot use Ephemeral port
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Description
Setting the port number to 0 should not throw an error.
Port 0 generally means Ephemeral port, which is the next available port within a range specified by the operating system.
Allowing developers to use Ephemeral ports enables many scenarios.
Please see
https://en.wikipedia.org/wiki/Ephemeral_port
I realise this would mean that the method calling Start would not know the port number, but this can be fixed by retriving the port number from the TcpListener after _listener.Start() is called and setting the _port variable;
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- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing the TcpListener setup around _listener.Start() and the _port variable. Verify how port 0 is currently rejected, then check how the actual bound port can be retrieved after startup. Done means port 0 starts successfully and the selected port is reflected in the server state, with coverage for this behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- networking
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100