$smwg­Sparql­Repository­Connector­Forced­Http­Version

Configuration parameter details:
Name	$smwgSparqlRepositoryConnectorForcedHttpVersion
Description	Sets whether CURLOPT_HTTP_VERSION should explicitly be forced for the endpoint communication
Default setting	false
(Other) available settings	true Allows to explicitly force CURLOPT_HTTP_VERSION for the endpoint communication
Software	Semantic MediaWiki
Since version	2.3.1
Until version	7.0.0
Configuration	Store settings
Keyword	sparqlstore · store · sparql

$smwgSparqlRepositoryConnectorForcedHttpVersion is a configuration parameter that sets whether CURLOPT_HTTP_VERSION should explicitly be forced for the endpoint communication. It was introduced to mitigate errors being encountered as being described in issue #1306.1 The configuration parameter was introduced in Semantic MediaWiki 2.3.1Released on 4 January 2016 and compatible with MW 1.19.0 - 1.25.x.2 and removed with Semantic MediaWiki 7.0.0Released on 4 June 2026 and compatible with MW 1.43.x - 1.46.x..

Removed in Semantic MediaWiki 7.0.0Released on 4 June 2026 and compatible with MW 1.43.x - 1.46.x.. $smwgSparqlRepositoryConnectorForcedHttpVersion no longer exists. SPARQL store connectors and RemoteRequest now use MediaWiki core's HttpRequestFactory for HTTP version negotiation, and the mediawiki/http-request (Onoi\HttpRequest) dependency has been dropped.3

The setting of this configuration parameter should not be changed unless issue #1306 is being encountered1 due to the following note: "... libcurl to use the specific HTTP versions. This is not sensible to do unless you have a good reason."4

Default setting

$smwgSparqlRepositoryConnectorForcedHttpVersion = false;

This means that CURLOPT_HTTP_VERSION will not be forced for the endpoint communication.

Changing the default setting

To modify the setting to this configuration parameter, add one of the following lines to your "LocalSettings.php" file:

Force CURLOPT_HTTP_VERSION for the endpoint communication

$smwgSparqlRepositoryConnectorForcedHttpVersion = true;

This means that CURLOPT_HTTP_VERSION will be forced for the endpoint communication. Options are available as specified at <curl.haxx.se> (CURLOPT_HTTP_VERSION).5

  Important Note: Do not change this setting unless you know what you are doing!

See also

• Help page on using SPARQL and RDF stores
• Help page on configuration parameter $smwgDefaultStoreSets the storage backend to be used for the semantic data