Validation of User Input for Port and URL (Lines 138, 139)

https://github.com/jofpin/trape/blob/6baae245691997742a51979767254d7da580eadd/core/trape.py#L138C4-L138C37

**Potential Issue:** User inputs for the `port` and `URL` fields are currently not validated, which could lead to errors or potential security risks.

**Suggestion:** Add validation checks for port ranges and URL format. This ensures input safety and reduces the likelihood of invalid configurations.

**Code Suggestion:**

```
try:
port = int(options.port)
if port < 1 or port > 65535:
raise ValueError("Port out of range")
except ValueError as e:
print(f"Invalid port: {e}")
sys.exit(1)

if not options.url.startswith(('http://', 'https://')):
print("Invalid URL format. URL must start with 'http://' or 'https://'")
sys.exit(1)

```

**Explanation:** This input validation strengthens security and ensures the application receives expected input formats.

Start by reading core/trape.py around lines 138-139 and trace how the port and URL options are received. Verify behavior with invalid ports and URL values, then confirm that valid inputs still work and invalid configurations exit with the intended messages.

Written by the indexing model from the issue text.