[dotnet] Fix marionette host Firefox argument

[RenderMichael]

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Description

Fixes the --marionette-host parameter for Firefox execution.

Motivation and Context

This is clearly a bug, but I am not familiar with this setting enough to verify the problematic behavior or the fix.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Bug fix

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Description

• Fixed the --marionette-host parameter in FirefoxDriverService.

• Corrected the argument to use browserCommunicationHost instead of host.

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Changes walkthrough 📝

	Relevant files
Bug fix	FirefoxDriverService.cs Corrected `--marionette-host` argument assignment                dotnet/src/webdriver/Firefox/FirefoxDriverService.cs Fixed the --marionette-host parameter. Replaced this.host with this.browserCommunicationHost. +1/-1

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Parameter Validation Verify that browserCommunicationHost is properly initialized and validated before being used as the marionette host parameter if (!string.IsNullOrEmpty(this.browserCommunicationHost)) { argsBuilder.AppendFormat(CultureInfo.InvariantCulture, " --marionette-host \"{0}\"", this.browserCommunicationHost); }

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Score
Possible issue	Validate host name before use Add null check and input validation for browserCommunicationHost to prevent potential format exceptions when appending to argsBuilder dotnet/src/webdriver/Firefox/FirefoxDriverService.cs [180] -argsBuilder.AppendFormat(CultureInfo.InvariantCulture, " --marionette-host \"{0}\"", this.browserCommunicationHost); +if (Uri.CheckHostName(this.browserCommunicationHost) != UriHostNameType.Unknown) + argsBuilder.AppendFormat(CultureInfo.InvariantCulture, " --marionette-host \"{0}\"", this.browserCommunicationHost); +else + throw new ArgumentException("Invalid host name for marionette host", nameof(browserCommunicationHost)); Apply this suggestion Suggestion importance[1-10]: 8 Why: The suggestion adds important input validation for the host name parameter, which could prevent runtime errors and provide better error messages when invalid host names are provided. This is a critical security and reliability improvement.	8