Open web page with redirect
lazarus / 38-Networking and Web Programming

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stansbkg · 2022-10-04 16:19

I'm trying to use Client.Get to scrape web data, with the ability to
redirect. I created a test program (attached), which I drew from [
https://forum.lazarus.freepascal.org/index.php?topic=58637.0 ]. Why do
I get the following error message?

Running "c:\fpc\3.2.2\bin\i386-win32\kgs storage\atestclientget.exe "
An unhandled exception occurred at $00425AE5:
EInOutError: Could not initialize OpenSSL library

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dje · 2022-10-05 06:30

Sounds like you are missing the required SSL DLL's

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Thaddy · 2022-10-05 10:14

Or the wrong versions.
What is your compiler: 64 or 32 bit?
BTW: this is a recurring problem and the correct answers are all over
this forum.

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Jurassic Pork · 2022-10-05 11:10

Hello,
Quote from: stansbkg on October 04, 2022, 06:19:20 pmRunning
"c:\fpc\3.2.2\bin\i386-win32\kgs storage\atestclientget.exe "
An unhandled exception occurred at $00425AE5:
EInOutError: Could not initialize OpenSSL library
try to see if you have the dll   ssleay32.dll in the folder
Windows\system32  (for 64 bits) or Windows\Syswow64 ( for 32 bits) .
You can also search for the other dlls of this code :
  Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i {$IFDEF
WINDOWS}  DLLSSLName: string = 'ssleay32.dll';  DLLSSLName2: string =
'libssl32.dll';  DLLSSLName3: string = {$IFDEF
WIN64}'libssl-1_1-x64.dll'{$ELSE}'libssl-1_1.dll'{$ENDIF}; 
DLLUtilName: string = 'libeay32.dll';  DLLUtilName2: string = {$IFDEF
WIN64}'libcrypto-1_1-x64.dll'{$ELSE}'libcrypto-1_1.dll'{$ENDIF}; 
{$ELSE}

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stansbkg · 2022-10-07 18:31

I don't have any of those XX.dlls. Should they have been loaded when I
installed Free Pascal? Also, where can I find what I need?

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dje · 2022-10-07 22:35

Quote from: stansbkg on October 07, 2022, 08:31:35 pmI don't have any
of those XX.dlls. Should they have been loaded when I installed Free
Pascal? Also, where can I find what I need?

Everything is documented:
https://wiki.lazarus.freepascal.org/fphttpclient#HTTPS_.28TLS.2FSSL.29

Which contains a link to:
https://wiki.openssl.org/index.php/Binaries

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stansbkg · 2022-10-08 18:21

How do I know what is the right openssl download to use? I have tried
seven so far - only using those for 64 bit delphi applications, and
all have failed with the same error message. I'm somewhat overwhelmed
right now.

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dje · 2022-10-08 20:18

Maybe try the advice from here:
https://forum.lazarus.freepascal.org/index.php?topic=41401.0

They recommend the Indy SSL libs froms:
https://indy.fulgan.com/SSL/

Also, your filepath implies you are using FPC 32bit (ie: i386-win32)

Unsure if the 64bit versions will work.

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Jurassic Pork · 2022-10-09 01:45

Hello,
have a look    here : you have link to download files and explanation
to install them :
Quote32-bit and 64-bit Windows
To install OpenSSL in a 32-bit or 64-bit Windows, you need to copy the
libeay32.dll and ssleay32.dll dynamic library files to your file
system, you can download them from one of these locations:

Option 1 - Download the OpenSSL installer files and install them.
Option 2 - Download the OpenSSL compressed library files and copy the
libeay32.dll and ssleay32.dll files to your system path.
If you go for Option 2 and decide to copy libeay32.dll and
ssleay32.dll files to your system path, ensure you copy them to the
right location:
32-bit Windows: You must copy the libeay32.dll and ssleay32.dll 32-bit
files to your Windows system folder (System32 folder).
64-bit Windows: You must copy the libeay32.dll and ssleay32.dll 64-bit
files to your Windows system folder for 64-bit files (System32) and
the libeay32.dll and ssleay32.dll 32-bit files to your Windows 32-bit
files folder (SysWOW64 folder).
So when working with a 64-bit Windows, remember:
System32 folder is for 64-bit files only.
SysWOW64 folder is for 32-bit files only.

it seems that you use Lazarus 32 bits on  a 64 bits Windows, so the 32
bits version of the dll's must be install in the folder SysWow64.

Friendly, J.P