The getaddrinfo() function combines the functionality provided by the gethostbyname(3) and getservbyname(3) functions into a single interface, but unlike the latter functions, getaddrinfo() is reentrant and allows programs to eliminate IPv4-versus-IPv6 dependencies.

Linux ubuntu 3.16.0-39-generic #53~14.04.1-Ubuntu SMP Wed May 27 10:03:17 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux. List the steps to reproduce the issue: 1.docker-compose up 2.See initial comment for full information Describe the results you received: See initial comment for full information Provide additional info you think is important: This GetAddrInfo function should be called with the pNodeName and pServiceName parameters of a pointer of type TCHAR and the pHints and ppResult parameters of a pointer of type ADDRINFOT. When UNICODE or _UNICODE is defined, GetAddrInfo is defined to GetAddrInfoW, the Unicode version of the function, and ADDRINFOT is defined to the addrinfoW A stack-based critical buffer overflow was found in the way the libresolv library (glibc) performed dual A/AAAA DNS queries. A remote attacker could crash or, potentially, execute code running the library on Linux. How do I patch and protect my server or workstation against the glibc getaddrinfo on Linux operating system? Read more… CVE-2015-7547: glibc getaddrinfo stack-based buffer overflow. Who’s vulnerable? Quite a lof systems are potentially vulnerable to this exploit: Red Hat Enterprise Linux 6 & CentOS 6: RHSA-2016:0175-1; Red Hat Enterprise Linux 7 & CentOS 7: RHSA-2016:0176-1; Debian Squeeze, Wheezy, Jessy & Stretch: CVE-2015-7547; Ubuntu 12.04 & 14.04: CVE-2015 getaddrinfo is a library function in the standard C library, not a command line tool. So trying to execute it is not quite the right path to a solution. You can call getaddrinfo from a python shell if you want: getaddrinfo () is specified in POSIX.1-2001 (and RFC 2553), and Microsoft is known for never following a standard it could extend or pervert, so of course it's a totally different function in Windows. The relevant MSDN page says it "provides protocol-independent translation from an ANSI host name to an address."

getaddrinfo () is specified in POSIX.1-2001 (and RFC 2553), and Microsoft is known for never following a standard it could extend or pervert, so of course it's a totally different function in Windows. The relevant MSDN page says it "provides protocol-independent translation from an ANSI host name to an address."

Function Name: getaddrinfo . Function Signature: socket.getaddrinfo(host, port, family=0, type=0, proto=0, flags=0) Function Overview: If we know a network service by host name like example.org or the IP address of the network service either in form of IPv4 or IPv6 along with the port number of the network service, getaddrinfo() will return a list of tuples containing information about socket

Linux socket 網路程式設計 現在已經不用了。[如果你想要設計能通用於 IPv4 與 IPv6 的程式也不用!]在現代,你有 getaddrinfo()

The getnameinfo() function is the inverse of getaddrinfo(3): it converts a socket address to a corresponding host and service, in a protocol-independent manner. It combines the functionality of gethostbyaddr(3) and getservbyport(3) , but unlike those functions, getnameinfo () is reentrant and allows programs to eliminate IPv4-versus-IPv6 The freeaddrinfo() function shall free one or more addrinfostructures returned by getaddrinfo(), along with any additional storage associated with those structures. If the ai_nextfield of the structure is not null, the entire list of structures shall be freed. The freeaddrinfo() function shall support the freeing of arbitrary The reason why it is slow is that getaddrinfo will resolve both IPV6 and IPv4 by default. If you set getaddrinfo only to resolve IPV4, the speed is the same as gethostbyname , it will communicate with DNS server twice gethostbyname and getaddrinfo are bothworking in blocked mode, C-ares library can be used to achieve asynchronous resolving. $ ssh hostname reverse mapping checking getaddrinfo for client.example.com [10.0.0.1] failed - POSSIBLE BREAK-IN ATTEMPT! username@hostname password: Resolution There are several ways to resolve this issue: May 04, 2019 · Technically: The FQDN is the name getaddrinfo returns for the hostname returned by gethostname. The DNS domain name is the part after the first dot. Therefore it depends on the configuration of the resolver (usually in /etc/host.conf) how you can change it. Function Name: getaddrinfo . Function Signature: socket.getaddrinfo(host, port, family=0, type=0, proto=0, flags=0) Function Overview: If we know a network service by host name like example.org or the IP address of the network service either in form of IPv4 or IPv6 along with the port number of the network service, getaddrinfo() will return a list of tuples containing information about socket 0011000: getaddrinfo() causes SIGSEGV in a multi-threaded program when linked statically: Linux 3.10.0-327.18.2.el7.x86_64 Architecture: x86-64 cat /etc/*release