Solving SSL Connection Error in Delphi 11.1's FireDAC with MySQL
Discover effective solutions for resolving SSL connection errors when using Delphi 11.1's FireDAC with MySQL, including library adjustments and configurations.
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Troubleshooting SSL Connection Errors in Delphi 11.1 with MySQL FireDAC
Hitting a roadblock while trying to connect your Delphi application to a MySQL database? You’re not alone. Many developers face issues such as the SSL connection error: unknown error number when integrating Delphi 11.1's FireDAC with MySQL – particularly after installing different versions. Let’s break down how to identify the issue and implement effective solutions.
Understanding the Problem
In this scenario, the developer had functioning connectivity on an earlier virtual machine with specific MySQL components and transitioned to a new virtual machine setup, but encountered connection failures with similar configurations. The confusion stems from a mismatch and unexpected behaviors, such as referencing libraries and driver compatibility which need to be resolved for successful connection.
Key Symptoms:
Encountering the error: [FireDAC][Phys][MySQL] SSL connection error: unknown error number
Conflicting versions of MySQL and Delphi installations
Driver paths referencing unexpected locations
Identifying the Root Cause
Upon analysis, several things were noteworthy:
Comparison of connection parameters between original and new setups revealed congruence—indicating the problem wasn’t immediately apparent from settings alone.
The libmysql.dll was being reported as missing or misplaced in your system, potentially leading to connection issues.
Solution Process
Step 1: Verifying Library Compatibility
Make sure that you are using the correct MySQL library versions. In this case:
32-bit versions of the MySQL libraries are required if you’re working within a 32-bit Delphi setup.
Check for libmysql.dll or libmariadb.dll in your C:\Windows\SysWOW64 directory, as the Delphi 11.1 environment might reference it from this location.
Step 2: Modify the FireDAC Connection Settings
Open your FireDAC Connection Editor.
Change the VendorLib property to match the correctly placed library. You might try setting it to:
libmariadb.dll
libmysql.dll
Test the connection after setting the law.
Step 3: Runtime vs IDE Connection
You may notice that connections can be established at runtime but not from within the IDE. If you encounter this inconsistency, integrate the FDPhysMySQLDriverLink component in your application:
This can allow for better handling of library links at runtime while providing more flexibility in terms of managing driver connections.
Step 4: Reinstall MySQL with Correct Configuration
If errors persist, consider:
Uninstalling and reinstalling MySQL using the Development Computer template. This can adjust some installation parameters that could lead to better compatibility with FireDAC.
Step 5: Community Support
Don’t hesitate to reach out to the Delphi community or forums for insights, as many users have faced similar issues and can provide valuable feedback or solutions based on their experiences, like reorienting library paths or adjusting SSL settings.
Conclusion
Troubleshooting SSL connection errors with Delphi 11.1's FireDAC and MySQL can be frustrating, but by following the outlined steps, you should hopefully find a resolution. Ensuring that you are using the correct drivers, verifying library paths, and taking advantage of community resources are essential to overcome these hurdles effectively. Should you have further questions or insights, engaging with fellow developers could often lead to discovering the missing piece in the puzzle. Happy coding!
