HP TCP/IP Services for OpenVMS: Sockets API and System Services Programming

This manual provides comprehensive documentation for developers writing network applications for the HP TCP/IP Services environment on OpenVMS Alpha, I64, and VAX systems. It details the two supported Application Programming Interfaces (APIs): the Berkeley Software Distribution (BSD) Sockets API and OpenVMS system services.

Key contents include:

• API Overviews: Explanations of both BSD Sockets and OpenVMS system services for network communication.
• Development Guide: Step-by-step instructions for common network tasks such as creating and binding sockets, managing connections, setting socket options, and reading/writing data using both TCP and UDP protocols.
• Advanced Topics: Guidance on porting applications to IPv6, handling 64-bit addressing, and working with multicast data.
• Reference Sections: Detailed reference for all supported Sockets API functions and OpenVMS I/O system services.
• Error Handling: Comprehensive tables mapping Sockets API error codes to OpenVMS status codes.
• Appendices: Reference tables for socket options, IOCTL requests, and detailed data types used in network programming.