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Enhanced Networking on IBM z/VSE by Rene Trumpp, Don Stoever, Karsten Graul, Ingo Franzki, Jeffrey Barnard, Joerg Schmidbauer

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API reference
This appendix describes TCP/IP-related application programming interfaces (APIs) that can be used under z/VSE. We distinguish between the following types of APIs:
Socket APIs
There are socket functions for IPv4 and for IPv6. Also, there are some stack dependent differences.
Secure socket (SSL) APIs
There is the z/OS compatible GSK interface that is supported by CSI’s SSL implementation and by OpenSSL. In addition, native OpenSSL functions can be used with the IJBSLVSE.OBJ file.
 
Socket APIs
z/VSE and the IP stacks that are available ...

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