[BUG] solr_path_read does not work properly

[dkd-kaehm]

Describe the bug
There are to many confusions about "/solr/" path segment for connection configurations.
Current code base is inconsistent and should be refactored.
The Site configuration has already split settings for path and core, so we should propagate them as is to the node initialization.

We should remove the processing/splitting from:

ext-solr/Classes/System/Solr/Node.php

Lines 47 to 54 in c7a0783

	$path = (string)$path;
	$elements = explode('/', trim($path, '/'));
	$coreName = (string)array_pop($elements);
	// Remove API version
	array_pop($elements);
	// The path should always have the same format!
	$path = trim(implode('/', $elements), '/');

and concatenation to "path":

ext-solr/Classes/Domain/Site/SiteRepository.php

Lines 295 to 297 in c7a0783

	'path' =>
	SiteUtility::getConnectionProperty($typo3Site, 'path', $languageUid, 'read', '/solr/') .
	SiteUtility::getConnectionProperty($typo3Site, 'core', $languageUid, 'read', 'core_en') . '/' ,

and propagate the path and core as is without any processing.

Used versions (please complete the following information):

• TYPO3 Version: [e.g. 10.4]
• EXT:solr Version: [e.g. 11.1.x]

Additional context
Discussion started on https://typo3.slack.com/archives/C02FF05Q4/p1632990610130900
and #3041

The text in Site module "I.e. if you use Hosted-Solr.com the path inside the admin panel. Should not contain "/solr/".
" is wrong and vice versa...

[etnicoliver]

Hello,

I think we encounter a problem related to this point. We put the path "/solr852/" in the field "solr_path_read" (Site module) and it does not seem to be taken into account.
The result is "Could not ping solr server, can not check version http://oursolrserver.com:8990/solr852/solr/core_cfwb/"
I don't know why there is "/solr/" in the middle, the correct path is /solr852/core_cfwb/.

We tested ext:solr version 11.1.2, same problem in the 11.1.1. But the old version 11.0.3 works juste fine in production.
Our solr server version is 8.5.2.
Typo3 version is 10.4.21

Does anyone else have the same problem?

Thank you.

[dkd-kaehm]

Does anyone else have the same problem?

All who uses the Solr servers within a path or behind proxies.
Please use /solr852/solr/ in solr_path_read.
The bad thing is that mentioned above array_pop($elements); cuts the latest element from path.

[stat1x]

Same problem here.
The given workaround does not seem to work in my case.