HP-UX IPv6 Porting Guide (September 2004)
Table Of Contents
- About This Document
- 1 Introduction
- 2 IPv6 Addressing
- 3 Data Structure Changes
- 4 Migrating Applications from IPv4 to IPv6
- 5 Overview of IPv4 and IPv6 Call Set-up
- 6 Function Calls Converting Names to Addresses
- 7 Function Calls Converting IP addresses to Names
- 8 Reading Error Messages
- 9 Freeing Memory
- 10 Converting Binary and Text Addresses
- 11 Testing for Scope and Type of IPv6 addresses using Macros
- 12 Identifying Local Interface Names and Indexes
- 13 Configuring or Querying an Interface using IPv6 ioctl() Function Calls
- 14 Verifying IPv6 Installation
- 15 Sample Client/Server Programs
- A IPv4 to IPv6 Quick Reference Guide
Function Calls Converting IP addresses to Names
getnameinfo(3N)
Chapter 740
• NI_NUMERICSERV: If set, getnameinfo() returns only service’s port number.
• NI_NUMERICSCOPE: If set, getnameinfo() returns the numeric form of the scope-ID. It is
ignored if the
sa
parameter is not an IPv6 address.
• NI_DGRAM: If set, service is a datagram service (SOCK_DGRAM). Default: service is a stream
service (SOCK_STREAM). This distinguishes between services for TCP and UDP that share
port numbers (for example, 512 to 514).