The functions getaddrinfo() and getnameinfo() convert domain names, hostnames, and IP addresses between human-readable text representations and structured binary formats for the operating system's networking API. Both functions are contained in the POSIX standard application programming interface (API).. getaddrinfo and getnameinfo are inverse functions of each other.

rdma_getaddrinfo(3) - Linux man page If node is provided, rdma_getaddrinfo will attempt to resolve the RDMA address, route, and connection data to the given node. The hints parameter, if provided, … linux - DNS lookups sometimes take 5 seconds - Unix One of the differences between getaddrinfo() and gethostbyname() is that the former supports both IPv4 and IPv6, while the latter only supports IPv4. So when you call getaddrinfo() with ai_family set to 0 (AF_UNSPEC), it won't return until it gets a response (or hits a timeout) for both A and AAAA queries for the domain name provided.

Feb 17, 2016 · Pretty much any Linux system uses glibc, and getaddrinfo is typically used to resolve IP addresses. Which means Linux servers as well as workstations, are vulnerable unless it runs an old version of glibc (pre 2.9). Google isn't the first one that spotted the bug, but determined it's significance in collaboration with Redhat.

getaddrinfo and getnameinfo are inverse functions of each other. They are network protocol agnostic, and support both IPv4 and IPv6. It is the recommended interface for name resolution in building protocol independent applications and for transitioning legacy IPv4 code to the IPv6 Internet. The following thread is closed: 133552-howto-linux-multihomed-dns-client (Sorry I am not allowed to post URLs) Therefore I write this append in an own thread. The HOWTO in the referenced thread helped me a lot and I only want to append how to make reverse lookup working for a local zone:

getaddrinfo_a(3) - Linux man page

C++,network,DNS.getaddrinfo is slower than ping when resolving domain names. I think ping uses gethostbyname to resolve a domain name. The question becomes whether getaddrinfo is slower than gethostbyname. After testPixelstech, this page is to provide vistors information of the most updated technology information around the world. And also, it will provide many useful tips on our further 0011000: getaddrinfo() causes SIGSEGV in a multi-threaded CentOS Linux 7 (Core) OS Version: 7.2.1511: Product Version: 7.2.1511 Target Version: Fixed in Version Summary: 0011000: getaddrinfo() causes SIGSEGV in a multi-threaded program when linked statically: Description: This problem seems to be an incarnation of a problem reported elsewhere long ago: Get Linux System and Hardware Details on the Command Line