For development purposes, copy them to C:\Windows\SysWOW64 (on 64-bit Windows) or C:\Windows\System32 (on 32-bit Windows). 3. Configure Indy 9 Components in Code
Do not use Shining Light Productions' standard installer (unless you select the "Light" 1.0.2u version). Instead, grab the DLLs from the official Indy repository or a trusted legacy mirror. Look for file versions 1.0.2u dated around 2019.
If your target server requires TLS 1.2, you cannot use native Indy 9 components. You have three paths forward:
Ensure your code explicitly assigns an SSL I/O handler to your Indy component. Below is a programmatic example using TIdHTTP and TIdSSLIOHandlerSocket : Delphi 7 Indy 9 Could Not Load Ssl Library
Delphi 7 is strictly a 32-bit compiler and generates 32-bit binaries. Your application use 32-bit OpenSSL DLLs.
: You can manually copy the necessary DLLs (e.g., libeay32.dll and ssleay32.dll for older OpenSSL versions) to your application's directory or a system directory (like C:\Windows\System32 ). However, be cautious with system directories to avoid compatibility issues.
uses IdSSLOpenSSLHeaders;
Replace Indy with modern HTTP libraries that use native Windows secure networking (Schannel), which automatically updates with the OS. Examples include EldoS SecureBlackbox or Clever Internet Suite .
Delphi 7, Indy 9, SSL library, OpenSSL, Could Not Load SSL Library, error, solutions.
Have you exorcised this SSL ghost? Share your horror stories in the comments below. Instead, grab the DLLs from the official Indy
uses IdHTTP, IdSSLOpenSSL; procedure MakeSecureRequest; var HTTP: TIdHTTP; SSLHandler: TIdSSLIOHandlerSocket; Response: string; begin HTTP := TIdHTTP.Create(nil); SSLHandler := TIdSSLIOHandlerSocket.Create(nil); try // Link the SSL handler to the HTTP client HTTP.IOHandler := SSLHandler; // Set SSL Options SSLHandler.SSLOptions.Method := sslvTLSv1; SSLHandler.SSLOptions.Mode := sslmClient; // Execute the request Response := HTTP.Get('https://example.com'); ShowMessage(Response); finally SSLHandler.Free; HTTP.Free; end; end; Use code with caution. Troubleshooting Persistent Errors
// ... your SSL connection code ... try // Your code that triggers the SSL connection except on E: Exception do begin // Show a detailed error message to help you debug ShowMessage('SSL Error: ' + E.Message + sLineBreak + 'Failed to load: ' + WhichFailedToLoad); end; end;
He opened the Indy 9 source code. He hadn't touched these Pascal files in five years. He scrolled down to IdSSLOpenSSL.pas and found the holy grail: a constant array of function names Indy expected to find in the DLLs. SSL_library_init , SSLv23_client_method , OPENSSL_add_all_algorithms_noconf . You have three paths forward: Ensure your code
While implementing the steps above will eliminate the "Could Not Load SSL Library" error message, you will likely encounter a secondary road-block:
His heart went cold. "No," he whispered. "No, no, no."