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dxFeed C API and dxFeed C# API version 5.12.0 with fixes and improvements are already available.

 

C API Changelog

• The new order source for Cboe C2 Options was added: C2OX
• Fixed bug with concurrent call of `tls_init` function

 

C# API Changelog

• The new order source for Cboe C2 Options was added: C2OX

 

Please refer to dxFeed Help Desk if you have any questions or concerns.