C language function:gethostbyname sample codes

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TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
gethostbyname(3).......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html


TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
The C macros used for the h_errno variable differ substantially from the errno values. Table 9.2 lists the error codes that you are likely to encounter when calling gethostbyname(3) and gethostbyaddr(3)........
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
Using the gethostbyname(3) Function.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
struct hostent *gethostbyname(const char *name);.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
The function gethostbyname(3) accepts one input argument that is a C string representing the hostname that you want to resolve into an address. The value returned is a pointer to the hostent structure if the call is successful (see Listing 9.3). If the function fails, then a NULL pointer is returned, and the value of h_errno contains the reason for the failure........
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
ptr = gethostbyname("www.lwn.net");.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
Applying the gethostbyname(3) Function.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
A short demonstration program for the function gethostbyname(3) has been provided in Listing 9.4. This program accepts multiple hostnames on the command line and then queries the name server for each. All available information is reported to standard output, or an error is reported if the name cannot be resolved........
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
Example 9.4. lookup.c/TT>Demonstration Program for gethostbyname(3).......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
3: * Example of gethostbyname(3):.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
26: hp = gethostbyname(argv[x]);.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
The hostname command-line argument is queried by calling upon gethostbyname(3) in line 26........
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
Previously, Listing 9.4 showed how the function gethostbyname(3) could be used to perform name server lookups. To cause this program to use a connected TCP socket instead of UDP datagrams, you can add one call to sethostent(3) in the program. Rather than list the entire program again, Listing 9.6 shows a context diff of the differences between lookup.c and lookup2.c. This listing highlights the simple changes that were made........
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
gethostbyname(3) function 2nd 3rd 4th.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
gethostbyname(3) function program 2nd 3rd 4th.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
gethostbyname(3).......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
gethostbyname(3) function.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
hostent structure (gethostbyname(3) function) 2nd 3rd.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Safari | Linux Socket Programming by Example -> Resolving Remote Addresses
gethostbyname(3) example 2nd 3rd 4th.......
http://alas.matf.bg.ac.rs/manuals/lspe/snode=77.html
TITLE : Re: Sockets programming in RPG-ILE - LONG CODE SAMPLE -- RPG400-L
* struct hostent *gethostbyname(char *host_name).......
http://archive.midrange.com/rpg400-l/199902/msg00043.html
TITLE : Re: Sockets programming in RPG-ILE - LONG CODE SAMPLE -- RPG400-L
C Eval hostp=gethostbyname(server).......
http://archive.midrange.com/rpg400-l/199902/msg00043.html
TITLE : Reverse DNS lookup and Java
The first obvious solution was to use java.net.InetAddress object and its getHostByName() method. For example:.......
http://archive.oreilly.com/pub/post/reverse_dns_lookup_and_java.html
TITLE : Some common networking operations in Perl « \1
($canonname, $aliases, $addrtype, $length, @addrs) = gethostbyname($name);.......
http://backreference.org/2014/12/11/some-common-networking-operations-in-perl/
TITLE : Some common networking operations in Perl « \1
my ($canonname, $aliases, $addrtype, $length, @addrs) = gethostbyname('www.kernel.org');.......
http://backreference.org/2014/12/11/some-common-networking-operations-in-perl/
TITLE : Some common networking operations in Perl « \1
gethostbyname() can also be run in scalar context, in which case it just returns a single IP(v4) address:.......
http://backreference.org/2014/12/11/some-common-networking-operations-in-perl/
TITLE : Some common networking operations in Perl « \1
$ perl -e 'use Socket qw (:DEFAULT inet_ntop); my $a = gethostbyname("www.kernel.org"); print inet_ntop(AF_INET, $a), "\n";'.......
http://backreference.org/2014/12/11/some-common-networking-operations-in-perl/
TITLE : Some common networking operations in Perl « \1
So getaddrinfo() is the recommended way to do hostname to IP address resolution, although gethostbyname() won't probably go away soon........
http://backreference.org/2014/12/11/some-common-networking-operations-in-perl/
TITLE : Parallel execution — bcbio-nextgen 1.0.4 documentation
python -c 'import socket; print socket.gethostbyname(socket.gethostname())'.......
http://bcbio-nextgen.readthedocs.io/en/latest/contents/parallel.html
TITLE : gethostbyname(), gethostbyaddr()
gethostbyname(), gethostbyaddr().......
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : gethostbyname(), gethostbyaddr()
struct hostent *gethostbyname(const char *name); // DEPRECATED!.......
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : gethostbyname(), gethostbyaddr()
PLEASE NOTE: these two functions are superseded by getaddrinfo() and getnameinfo()! In particular, gethostbyname() doesn't work well with IPv6........
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : gethostbyname(), gethostbyaddr()
These functions map back and forth between host names and IP addresses. For instance, if you have "www.example.com", you can use gethostbyname() to get its IP address and store it in a struct in_addr........
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : gethostbyname(), gethostbyaddr()
gethostbyname() takes a string like "www.yahoo.com", and returns a struct hostent which contains tons of information, including the IP address. (Other information is the official host name, a list of aliases, the address type, the length of the addresses, and the list of addresses—it's a general-purpose structure that's pretty easy to use for our specific purposes once you see how.).......
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : gethostbyname(), gethostbyaddr()
gethostbyaddr() takes a struct in_addr or struct in6_addr and brings you up a corresponding host name (if there is one), so it's sort of the reverse of gethostbyname(). As for parameters, even though addr is a char*, you actually want to pass in a pointer to a struct in_addr. len should be sizeof(struct in_addr), and type should be AF_INET........
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : gethostbyname(), gethostbyaddr()
if ((he = gethostbyname(argv[1])) == NULL) { // get the host info.......
http://beej.us/guide/bgnet/output/html/multipage/gethostbynameman.html
TITLE : Errata Security: You shouldn't be using gethostbyname() anyway
You shouldn't be using gethostbyname() anyway.......
http://blog.erratasec.com/2015/01/you-shouldnt-be-using-gethostbyname.html
TITLE : Errata Security: You shouldn't be using gethostbyname() anyway
Today's GHOST vulnerability is in gethostbyname(), a Sockets API function from the early 1980s. That function has been obsolete for a decade. What you should be using is getaddrinfo() instead, a newer function that can also handle IPv6........
http://blog.erratasec.com/2015/01/you-shouldnt-be-using-gethostbyname.html
TITLE : Errata Security: You shouldn't be using gethostbyname() anyway
This function has been a POSIX standard for more than a decade. The above code works on WinXP as well as fairly old versions of Linux and Mac OS X. Even if your code is aggressively portable, there is little reason not to use this function. Only in insanely portable code, such as when you worry about 16-bit pointers, should have to worry about backing off to gethostbyname(). Conversely, gethostbyname() is no longer part of POSIX, and thus officially no longer "standard"........
http://blog.erratasec.com/2015/01/you-shouldnt-be-using-gethostbyname.html
TITLE : Errata Security: You shouldn't be using gethostbyname() anyway
If you learn Sockets programming at the university, they still teach gethostbyname(). That's because as far as Internet programming is concerned, academia is decades out of date........
http://blog.erratasec.com/2015/01/you-shouldnt-be-using-gethostbyname.html
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
home > topics > c / c++ > questions > gethostbyname() ---- delete resulting pointer?.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
gethostbyname() ---- Delete Resulting Pointer?.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
lHostInfo = gethostbyname(ipHost.c_str());.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
- a standard function called gethostbyname().......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
lHostInfo = gethostbyname(ipHost.c_str());.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
- a standard function called gethostbyname().......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
lHostInfo = gethostbyname(ipHost.c_str());.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
- a standard function called gethostbyname().......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
lHostInfo = gethostbyname(ipHost.c_str());.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
for gethostbyname() ask in comp.unix.programmer, it's not topical here.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
gethostbyname(), isn't in the C standard. Regardless, it is still C.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
lHostInfo = gethostbyname(ipHost.c_str());.......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
gethostbyname(), isn't in the C standard........
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : gethostbyname() ---- Delete Resulting Pointer? - C / C++
- a standard function called gethostbyname().......
http://bytes.com/topic/c/answers/745750-gethostbyname-delete-resulting-pointer
TITLE : DNS Classes in C# -CodeIdol
?GetHostByName().......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
GetHostByName().......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
The GetHostByName() method performs a DNS query for a specified hostname using the default DNS server configured on the system. The format of the method is as follows:.......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
IPHostEntry GetHostByName(string hostname).......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
The IPHostEntry that is returned by GetHostByName() is itself an interesting object. It associates a DNS hostname with an array of alias names and IP addresses. It contains three properties:.......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
Listing 4.5 is a sample program that demonstrates the GetHostByName() method........
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
IPHostEntry results = Dns.GetHostByName(argv[0]);.......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
The GetDNSHostInfo.cs program is fairly straightforward. It takes the parameter entered on the command line, attempts to use it to perform a GetHostByName(), and dumps the IPHostEntry object returned from the method. If there is more than one IP address assigned to the hostname, each address will appear in the AddressList property. The foreach function is used to extract each individual IP address and display it. The output from a sample session looks like this:.......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
The GetHostByName() method returned the same information that was received by the default nslookup command. In fact, you can run windump or analyzer and watch the DNS query generated by the GetHostByName() method. It should look similar to the one generated by the default nslookup example in Listing 4.4........
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
As shown in Chapter 2, Listing 2.4, the GetHostByName() method is often used with the GetHostName() method to determine the IP address of the local system, like this:.......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
IPHostEntry localaddrs = Dns.GetHostByName(Dns.GetHostName());.......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
Not too exciting. Obviously, the GetHostByName() method only works for resolving hostnames........
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
As you saw in the preceding sections, the main disadvantage with the GetHostByName() and GetHostByAddress() methods is that they are specific to one or the other types of address information. If you feed an IP address into the GetHostByName() method, it returns only the address. Even worse, if you try to feed a string hostname to the GetHostByAddress() method, it will produce an Exception (because it uses the IPAddress.Parse() method on the supplied string IP address)........
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
?BeginGetHostByName().......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : DNS Classes in C# -CodeIdol
?EndGetHostByName().......
http://codeidol.com/community/dotnet/dns-classes-in-c/10468/
TITLE : c++ - Socket connect realization: gethostbyname or getnameinfo - Code Review Stack Exchange
if((host = (struct hostent*) gethostbyname(address)) == 0).......
http://codereview.stackexchange.com/questions/17863/socket-connect-realization-gethostbyname-or-getnameinfo
TITLE : How to get hostID after inspecting hosts? Do you h... - Cloudera Community
socket.gethostbyname(name), # IP address.......
http://community.cloudera.com/t5/Cloudera-Manager-Installation/How-to-get-hostID-after-inspecting-hosts-Do-you-have-examples/td-p/18172
TITLE : gethostbyname sample - Shammerism
hp = gethostbyname(hoststring);.......
http://d.hatena.ne.jp/shammer/20090912/1390553256
TITLE : getaddrinfo with round robin DNS and happy eyeballs | daniel.haxx.se
gethostbyname() is really IPv4-focused. The mere whisper of IPv6 makes it break down and cry. It had to be replaced by something better. Enter getaddrinfo() also POSIX (and defined in RFC 3943 and again updated in RFC 5014). This is the modern function that supports IPv6 and more. It is the shiny thing the world needed!.......
http://daniel.haxx.se/blog/2012/01/03/getaddrinfo-with-round-robin-dns-and-happy-eyeballs/
TITLE : Dan Kaminsky's Blog
* Many programs, especially SUID binaries reachable locally, use gethostbyname() if, and only if, a preliminary call to inet_aton() fails. However, a subsequent call must also succeed (the ginet-atonh requirement) in order to reach the overflow: this is impossible, and such programs are therefore safe........
http://dankaminsky.com/
TITLE : Dan Kaminsky's Blog
* Most of the other programs, especially servers reachable remotely, use gethostbyname() to perform forward-confirmed reverse DNS (FCrDNS, also known as full-circle reverse DNS) checks. These programs are generally safe, because the hostname passed to gethostbyname() has normally been pre-validated by DNS software:.......
http://dankaminsky.com/
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
I had this program using gethostbyname() and without pthead and it works fine! Now i'm trying implement thread and resolution name with thread, since that i will need change gethostbyname() i want support IPv4 and IPv6. =].......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
I had implemented my program with gethostbyname() with thread like this:.......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
he = gethostbyname(fqdn);.......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
My programm run, and print the FIRST " printf("\n TEST 1 - EXECUTED!!\n");" and go on, but the it arrive in "he = gethostbyname(fqdn);" it simple DOESN'T execute anymore instructions (neither the second TEST2 printf()). And the program exitilly normally as if all had been executed normally. :(.......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
use gethostbyname() inside a mutex lock... Are you sure it's.......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
with gethostbyname(), too... (It can return multiple, as well...).......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
use gethostbyname() inside a mutex lock..........
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
In the systrace i have a "real time" signal after prthread_create() (if i use gethostbyname(), getaddrinfo(), getnameinfo(), etc) see:.......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
with gethostbyname(), too... (It can return multiple, as well...).......
http://developerweb.net/viewtopic.php@id=3421
TITLE : getaddrinfo() and pthread !? (Page 1) / Threads / UNIX Socket FAQ
The output of ltrace and strace are equal when i used gethostbyname() or getnameinfo() ... , my program didn't execute anymore... :(.......
http://developerweb.net/viewtopic.php@id=3421
TITLE : gethostbyname - man pages section 3: Networking Library Functions
* gethostbyname(3NSL).......
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
* gethostbyname(3XNET).......
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
gethostbyname(3NSL).......
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
struct hostent *gethostbyname(.......
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
The gethostbyname() function searches for information for a host with the hostname specified by the character-string parameter name........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
The sethostent() function sets or resets the enumeration to the beginning of the set of host entries. This function should be called before the first call to gethostent(). Calls to gethostbyname() and gethostbyaddr() leave the enumeration position in an indeterminate state. If the stayopen flag is non-zero, the system can keep allocated resources such as open file descriptors until a subsequent call to endhostent ()........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
The gethostbyname(), gethostbyaddr(), and gethostent() functions use static storage that is reused in each call, making these functions unsafe for use in multithreaded applications........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
The gethostbyname(), gethostbyname_r(), gethostbyaddr(), and gethostbyaddr_r() functions each return a pointer to a struct hostent if they successfully locate the requested entry; otherwise they return NULL........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
The gethostbyname(), gethostbyaddr(), and gethostent() functions use static storage, so returned data must be copied before a subsequent call to any of these functions if the data is to be saved........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
On failures, the non-reentrant functions gethostbyname() and gethostbyaddr() set a global integer h_errno to indicate one of these error codes (defined in ): HOST_NOT_FOUND, TRY_AGAIN, NO_RECOVERY , NO_DATA, and NO_ADDRESS........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
If a resolver is provided with a malformed address, or if any other error occurs before gethostbyname() is resolved, then gethostbyname() returns an internal error with a value of ?1........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
The gethostbyname() function will set h_errno to NETDB_INTERNAL when it returns a NULL value........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : gethostbyname - man pages section 3: Networking Library Functions
There is no analogue of gethostent() and gethostent_r() in the netdir functions, so these enumeration functions go straight to the hosts entry in nsswitch.conf . Thus enumeration can return results from a different source than that used by gethostbyname(), gethostbyname_r (), gethostbyaddr(), and gethostbyaddr_r ()........
http://docs.oracle.com/cd/E86824_01/html/E54774/gethostbyname-3nsl.html
TITLE : 18.1. socket Low-level networking interface — Python 3.4.7rc1 documentation
socket.gethostbyname(hostname)÷.......
http://docs.python.org/3.4/library/socket.html
TITLE : 18.1. socket Low-level networking interface — Python 3.4.7rc1 documentation
Translate a host name to IPv4 address format. The IPv4 address is returned as a string, such as '100.50.200.5'. If the host name is an IPv4 address itself it is returned unchanged. See gethostbyname_ex() for a more complete interface. gethostbyname() does not support IPv6 name resolution, and getaddrinfo() should be used instead for IPv4/v6 dual stack support........
http://docs.python.org/3.4/library/socket.html
TITLE : 18.1. socket Low-level networking interface — Python 3.4.7rc1 documentation
If you want to know the current machinefs IP address, you may want to use gethostbyname(gethostname()). This operation assumes that there is a valid address-to-host mapping for the host, and the assumption does not always hold........
http://docs.python.org/3.4/library/socket.html
TITLE : 18.1. socket Low-level networking interface — Python 3.4.7rc1 documentation
HOST = socket.gethostbyname(socket.gethostname()).......
http://docs.python.org/3.4/library/socket.html
TITLE : class Socket - Documentation for Ruby 2.1.0
gethostbyname(hostname) ¨ [official_hostname, alias_hostnames, address_family, *address_list] click to toggle source.......
http://docs.ruby-lang.org/en/2.1.0/Socket.html
TITLE : class Socket - Documentation for Ruby 2.1.0
p Socket.gethostbyname("hal") #=> ["localhost", ["hal"], 2, "\x7F\x00\x00\x01"].......
http://docs.ruby-lang.org/en/2.1.0/Socket.html
TITLE : class Socket - Documentation for Ruby 2.1.0
sock_s_gethostbyname(VALUE obj, VALUE host).......
http://docs.ruby-lang.org/en/2.1.0/Socket.html
TITLE : C Programming with the Resolver Library Routines (DNS and BIND, 4th Edition)
* since it is much easier to call gethostbyname( ) later.......
http://docstore.mik.ua/orelly/networking_2ndEd/dns/ch15_02.htm
TITLE : C Programming with the Resolver Library Routines (DNS and BIND, 4th Edition)
* the local domain name before we call gethostbyname( );.......
http://docstore.mik.ua/orelly/networking_2ndEd/dns/ch15_02.htm
TITLE : C Programming with the Resolver Library Routines (DNS and BIND, 4th Edition)
* So far, all we have are domain names. We use gethostbyname( ).......
http://docstore.mik.ua/orelly/networking_2ndEd/dns/ch15_02.htm
TITLE : C Programming with the Resolver Library Routines (DNS and BIND, 4th Edition)
* because _res affects gethostbyname( ). (We altered.......
http://docstore.mik.ua/orelly/networking_2ndEd/dns/ch15_02.htm
TITLE : C Programming with the Resolver Library Routines (DNS and BIND, 4th Edition)
host = gethostbyname(nsList[nsNum]);.......
http://docstore.mik.ua/orelly/networking_2ndEd/dns/ch15_02.htm
TITLE : Embarcadero Newsgroup Archive :: embarcadero.public.delphi.internet.winsock :: GetHostByName and in GetAddrInfoW
var p:PHostEnt; p := GetHostByName(xxxName)); if Assigned (p) then Result := (byte(p^.h_addr^[0]) = 127) and (byte(p^.h_addr^[3]) in [2,4,5]) //checking the ip address returned from the function.......
http://embarcadero.newsgroups.archived.at/public.delphi.internet.winsock/200902/0902041072.html
TITLE : How to get computer IP address using Delphi software through Socket API? | Website - developing, building and promoting
HEnt := GetHostByName(HName^);.......
http://en.softmaker.kz/delphi/how-to-get-computer-ip-address-using-delphi-software-through-socket-api.html
TITLE : Berkeley sockets - Wikipedia
* gethostbyname() and gethostbyaddr() are used to resolve host names and addresses. IPv4 only........
http://en.wikipedia.org/wiki/Berkeley_sockets
TITLE : Berkeley sockets - Wikipedia
The gethostbyname() and gethostbyaddr() functions are used to resolve host names and addresses in the domain name system or the local host's other resolver mechanisms (e.g., /etc/hosts lookup). They return a pointer to an object of type struct hostent, which describes an Internet Protocol host. The functions take the following arguments:.......
http://en.wikipedia.org/wiki/Berkeley_sockets
TITLE : Examples — Eventlet 0.21.0 documentation
ip = socket.gethostbyname(url).......
http://eventlet.net/doc/examples.html
TITLE : gethostbyaddr Function - Network Programming for Microsoft Windows , Second Edition (Microsoft Programming Series)
struct hostent *gethostbyname( const char *name );.......
http://flylib.com/books/en/1.401.1.44/1/
TITLE : gethostbyaddr Function - Network Programming for Microsoft Windows , Second Edition (Microsoft Programming Series)
hp = gethostbyname( "www.microsoft.com" );.......
http://flylib.com/books/en/1.401.1.44/1/
TITLE : gethostbyaddr Function - Network Programming for Microsoft Windows , Second Edition (Microsoft Programming Series)
hp = (struct hostent *)gethostbyname( hostname );.......
http://flylib.com/books/en/1.401.1.44/1/
TITLE : sslconnect.c - example 'C' code demonstrating a basic SSL/TLS connection
if ( (host = gethostbyname(hostname)) == NULL ) {.......
http://fm4dd.com/openssl/sslconnect.htm
TITLE : A Simple HTTP Server | omz:forum
ipAddr = socket.gethostbyname(socket.gethostname()) # incorrect!! See below........
http://forum.omz-software.com/topic/196/a-simple-http-server
TITLE : A Simple HTTP Server | omz:forum
ipAddr = socket.gethostbyname(socket.gethostname() + '.local') # corrected!.......
http://forum.omz-software.com/topic/196/a-simple-http-server
TITLE : A Simple HTTP Server | omz:forum
ipAddr = socket.gethostbyname(socket.gethostname() + '.local') .......
http://forum.omz-software.com/topic/196/a-simple-http-server
TITLE : Issues with HttpWebRequest on IL2CPP for UWP | Unity Community
When debugging the project, the exception gets thrown on the line "he = gethostbyname(hostname)" in this function:.......
http://forum.unity3d.com/threads/issues-with-httpwebrequest-on-il2cpp-for-uwp.473468/
TITLE : Issues with HttpWebRequest on IL2CPP for UWP | Unity Community
WaitStatus SocketImpl::GetHostByName(const std::string &host, std::string &name, std::vector &aliases, std::vector &addr_list).......
http://forum.unity3d.com/threads/issues-with-httpwebrequest-on-il2cpp-for-uwp.473468/
TITLE : Issues with HttpWebRequest on IL2CPP for UWP | Unity Community
he = gethostbyname(hostname);.......
http://forum.unity3d.com/threads/issues-with-httpwebrequest-on-il2cpp-for-uwp.473468/
TITLE : MPICH2, mpirun > ssh: Could not resolve hostname
I can not follow your strain of thoughts here. Not being able to resolve a hostname means that the gethostbyname() routine can not find an IP address belonging to that host (which is not to strange as MY_MACHINE_NAME is not a real hostname). There is no connection with the number of cores in your CPU........
http://forums.opensuse.org/showthread.php/475510-MPICH2-mpirun-gt-ssh-Could-not-resolve-hostname
TITLE : Building a DNS Resolver | Andy G's Blog
If youfve ever had to turn a hostname into an IP address or the other way around in your C/C++ code, you probably called either gethostbyname() or gethostbyaddr(), and never thought twice about how those functions work. Well, theyfre more complex than you might think, and theyfre slow........
http://gieseanw.wordpress.com/2010/03/25/building-a-dns-resolver/
TITLE : Building a DNS Resolver | Andy G's Blog
For anyone who has used gethostbyname() or gethostbyaddr(), this is obvious. But what isnft obvious is the amount of work those functions go through to get you what you want; a simple translation of a host name into an IP address, or the other way around........
http://gieseanw.wordpress.com/2010/03/25/building-a-dns-resolver/
TITLE : Building a DNS Resolver | Andy G's Blog
So there you have it, a DNS Resolver, built over the course of many hours during a two-week span. It is a huge learning experience, and really teaches you that re-inventing the wheel can cost many hours of time lost. Had one not known functions like gethostbyname() existed, they may have tried to do something like this, spending 60 hours when they could have spent 10 minutes reading the MSDN function documentation........
http://gieseanw.wordpress.com/2010/03/25/building-a-dns-resolver/
TITLE : Programming IP Sockets on Linux, Part One
print socket.gethostbyname(sys.argv[1]).......
http://gnosis.cx/publish/programming/sockets.html
TITLE : Programming IP Sockets on Linux, Part One
The trick is using a wrapped version of the same gethostbyname()) function we also find in C. Usage is as simple as:.......
http://gnosis.cx/publish/programming/sockets.html
TITLE : Programming IP Sockets on Linux, Part One
In C, that standard library call gethostbyname() is used for name lookup. The below is a simple implementation of nslookup as a command-line tool; adapting it for use in a larger application is straightforward. Of course, C is a bit more finicky than Python is........
http://gnosis.cx/publish/programming/sockets.html
TITLE : Programming IP Sockets on Linux, Part One
#include /* hostent struct, gethostbyname() */.......
http://gnosis.cx/publish/programming/sockets.html
TITLE : Programming IP Sockets on Linux, Part One
if ((host = gethostbyname(argv[1])) == NULL) {.......
http://gnosis.cx/publish/programming/sockets.html
TITLE : Programming IP Sockets on Linux, Part One
Notice that the returned value from gethostbyname() is a hostent structure that describes the names host. The member host->h_addr_list contains a list of addresses, each of which is a 32-bit value in "network byte order"--i.e. the endianness may or may not be machine native order. In order to convert to dotted-quad form, use the function inet_ntoa() ........
http://gnosis.cx/publish/programming/sockets.html
TITLE : iOS Application Code Mine: How to get device IPAddess in iPhone SDK?
struct hostent *host = gethostbyname([[self hostname] UTF8String]);.......
http://iphoneappcode.blogspot.com/2012/05/how-to-get-device-ipaddess-in-iphone.html
TITLE :
PH := GetHostByName(PAnsiChar(HostName));.......
http://izawa-web.com/xping/xping.html
TITLE :
PH := GetHostByName(buffer);.......
http://izawa-web.com/xping/xping.html
TITLE : (2004-2017) :: gethostbyname, getaddrinfo
myent = gethostbyname(argv[1]);.......
http://knight76.tistory.com/entry/30028207524
TITLE : Let's make a NTP Client in C by David Lettier
server = gethostbyname( host_name ); // Convert URL to IP........
http://lettier.github.io/posts/2016-04-26-lets-make-a-ntp-client-in-c.html
TITLE : gethostbyname(3): network host entry - Linux man page
gethostbyname(3) - Linux man page.......
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
struct hostent *gethostbyname(const char *name);.......
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
The domain name queries carried out by gethostbyname() and gethostbyaddr() use a combination of any or all of the name server named(8), a broken out line from /etc/hosts, and the Network Information Service (NIS or YP), depending upon the contents of the order line in /etc/host.conf. The default action is to query named(8), followed by /etc/hosts........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
The gethostbyname() and gethostbyaddr() functions return the hostent structure or a NULL pointer if an error occurs. On error, the h_errno variable holds an error number. When non-NULL, the return value may point at static data, see the notes below........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
POSIX.1-2001 specifies gethostbyname(), gethostbyaddr(), sethostent(), endhostent(), gethostent(), and h_errno; gethostbyname(), gethostbyaddr(), and h_errno are marked obsolescent in that standard. POSIX.1-2008 removes the specifications of gethostbyname(), gethostbyaddr(), and h_errno, recommending the use of getaddrinfo(3) and getnameinfo(3) instead........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
The functions gethostbyname() and gethostbyaddr() may return pointers to static data, which may be overwritten by later calls. Copying the struct hostent does not suffice, since it contains pointers; a deep copy is required........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
In the original BSD implementation the len argument of gethostbyname() was an int. The SUSv2 standard is buggy and declares the len argument of gethostbyaddr() to be of type size_t. (That is wrong, because it has to be int, and size_t is not. POSIX.1-2001 makes it socklen_t, which is OK.) See also accept(2)........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
Glibc2 also has a gethostbyname2() that works like gethostbyname(), but permits to specify the address family to which the address must belong........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
gethostbyname() does not recognize components of a dotted IPv4 address string that are expressed in hexadecimal........
http://linux.die.net/man/3/gethostbyname
TITLE : gethostbyname(3): network host entry - Linux man page
byteorder(3), clufindhostname(8), cnetdb(3), environ(5), environ(7), evdns(3), freetds.conf(5), getipnodebyname(3), host.conf(5), hostname(1), inn.conf(5), ip(7), leafnode(8), libbind-getaddrinfo(3), libbind-getipnodebyname(3), libbind-hostname(7), libbind-resolver(3), libbind-resolver(5), libval_shim(3), nscd(8), pmgetarchivelabel(3), pmie(1), pmreconnectcontext(3), pth(3), rcmd(3), res_query(3), resolver(5), rexec(3), sethostid(2), val_gethostbyname(3), winbindd(8), xserver(1).......
http://linux.die.net/man/3/gethostbyname
TITLE : [lwip-users] Usage example for DNS client (resolv.c)
// sample usage of gethostbyname().......
http://lists.nongnu.org/archive/html/lwip-users/2007-06/msg00106.html
TITLE : [lwip-users] Usage example for DNS client (resolv.c)
result = gethostbyname(smtp.server, &smtp.serverIP,.......
http://lists.nongnu.org/archive/html/lwip-users/2007-06/msg00106.html
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
Raw API applications can use the dns_gethostbyname() function to request a lookup, and specify a callback function to notify the application when the lookup is complete. As you can see from its header bellow, this function will return immediately. If the requested address is already known, it will be returned via the passed argument pointer. If a request to a DNS server needs to be made, your callback function will be called when it has finshed........
http://lwip.wikia.com/wiki/DNS
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
* dns_gethostbyname(const char *hostname, struct ip_addr *addr, dns_found_callback found,.......
http://lwip.wikia.com/wiki/DNS
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
switch(dns_gethostbyname("www.lwIP.com", &resolved, smtp_serverFound, NULL)){.......
http://lwip.wikia.com/wiki/DNS
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
err_t netconn_gethostbyname(const char *name, ip_addr_t *addr).......
http://lwip.wikia.com/wiki/DNS
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
See also netconn_gethostbyname()........
http://lwip.wikia.com/wiki/DNS
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
For socket based apps, a gethostbyname() wrapper function is provided that blocks during the lookup if necessary. Use the following functions:.......
http://lwip.wikia.com/wiki/DNS
TITLE : DNS | lwIP Wiki | FANDOM powered by Wikia
* gethostbyname() - standard implementation, blocks if necessary until lookup complete or fails.......
http://lwip.wikia.com/wiki/DNS
TITLE : inet(3) - Linux manual page
byteorder(3), getaddrinfo(3), gethostbyname(3), getnameinfo(3),.......
http://man7.org/linux/man-pages/man3/inet_aton.3.html
TITLE : inet(3) - Linux manual page
Pages that refer to this page: getaddrinfo(3), getaddrinfo_a(3), gethostbyname(3), inet_net_pton(3), inet_ntop(3), inet_pton(3), networks(5), ip(7).......
http://man7.org/linux/man-pages/man3/inet_aton.3.html
TITLE : gethostbyname function (Windows)
struct hostent* FAR gethostbyname(.......
http://msdn.microsoft.com/ja-jp/library/windows/desktop/ms738524(v=vs.85).aspx
TITLE : gethostbyname function (Windows)
remoteHost = gethostbyname(host_name);.......
http://msdn.microsoft.com/ja-jp/library/windows/desktop/ms738524(v=vs.85).aspx
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
This is a good idea in general. However, every version of ssh that I could test (going back to Ubuntu 8.04) uses getaddrinfo() rather than gethostbyname() and is therefore safe........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
or not necessarily safe, as people here claim that getaddrinfo() uses gethostbyname() under the covers........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
"A heap-based buffer overflow was found in __nss_hostname_digits_dots(), which is used by the gethostbyname() and gethostbyname2() glibc function call. A remote attacker could use this flaw to execute arbitary code with the permissions of the user running the application.".......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
I'm not fully though my morning bootup process and so not really ready to grok this but, can anyone give a quick summary of why gethostbyname() needs to hit the heap at all, let alone with a realloc call? There's a maximum hostname length, and it's not huge. Also: isn't this function just saying "yes" or "no" to a candidate hostname? Can't it just say "no" if the hostname is super long?.......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
gethostbyname() and friends fill in struct hostent:.......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
It looks like what's going on is that gethostbyname() calls __nss_hostname_digits_dots() which checks to see if the string you passed it was an IPv4 or IPv6 address rather than a name, and in that case it functions like inet_aton/inet_pton and converts the IP address string to a binary IP address as though the "name" 1.2.3.4 resolved to IP address 1.2.3.4........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
"The gethostbyname(), gethostbyaddr(), herror(), and hstrerror() functions are obsolete. Applications should use getaddrinfo(3), getnameinfo(3), and gai_strerror(3) instead.".......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
For a long time: getaddrinfo() and others are specified in susv3[1] (since 2003 I think). However, gethostbyname() and gethostbyaddr() are still very commonly used, and won't be gone soon........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
getaddrinfo() is also a much more complicated function than gethostbyname(). If you need the extra features, fine. If you're writing new code, fine. But going back and trying to update existing code is just going to introduce new bugs........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
As far as I can tell, sshd has always used getaddrinfo() which is not vulnerable (rather than gethostbyname() which is). Can anyone confirm?.......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
According to this comment: https://news.ycombinator.com/item?id=8954458 , getaddrinfo() uses gethostbyname() internally. So, is a default 'UseDNS yes' ssh setup vulnerable or not?.......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
Even if it used gethostbyname() , I fail to understand how one would supply an invalid IP address to an sshd program? It calls an IP resolver after the TCP connection has been established, reading off the IP from there. From what I understood from their exim HELO example, one has to feed in a crazy IP "address" to gethostbyname() to trigger the bug........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
Thus, an attacker controlling the PTR record for a given IP might provide a GHOST-compliant name in that PTR record; Then, connect to the ssh daemon, wait for it to read the PTR record - and if it gethostbyname() on it, it's game over........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
But why would this malicious PTR record be fed into gethostbyname() again? At that point of getting a reverse lookup result, sshd is done checking........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
gethostbyname() if, and only if, a preliminary call to inet_aton().......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
gethostbyname() to perform forward-confirmed reverse DNS (FCrDNS, also.......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
safe, because the hostname passed to gethostbyname() has normally been.......
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
On the other hand, if you can make your target call gethostbyname() on an arbitrary string, you don't need to control a DNS server........
http://news.ycombinator.com/item@id=8953545
TITLE : CVE-2015-0235 GHOST: glibc gethostbyname buffer overflow | Hacker News
The release at http://www.frsag.org/pipermail/frsag/2015-January/005722.htm... says that it affects both gethostbyname() and gethostbyaddr()........
http://news.ycombinator.com/item@id=8953545
TITLE : simple gethostbyname example | paul schreiber
Herefs a simple example using gethostbyname() that emulates the host command. I wrote it to debug a DNS problem. (On the network Ifm on right now, gethostbyname() returns a different answer than host and dig. It is overagressively caching other hostnames. i.e. paulloookup shrub.ca is returning 17.250.248.64, which is mail.mac.com (!).......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
struct hostent *hp = gethostbyname(argv[1]);.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
printf("gethostbyname() failed\n");.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
struct hostent *hp = gethostbyname(argv[1]);.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
fprintf(stderr,"gethostbyname() failed\n");.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
Pingback: Canft obtain local IP using gethostbyname() | SeekPHP.com.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
struct hostent *hp = gethostbyname(argv[1]);.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
fprintf(stderr,"gethostbyname() failed\n");.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
struct hostent *hp = gethostbyname(argv[1]);.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : simple gethostbyname example | paul schreiber
fprintf(stderr,"gethostbyname() failed\n");.......
http://paulschreiber.com/blog/2005/10/28/simple-gethostbyname-example/
TITLE : Bricolage: Memoization
memoize sub { gethostbyname(@_) || 'Sorry.' };.......
http://perl.plover.com/MiniMemoize/memoize.html
TITLE : Bricolage: Memoization
$fast_gethostbyname = memoize sub { gethostbyname(@_) || 'Sorry.' };.......
http://perl.plover.com/MiniMemoize/memoize.html
TITLE : Bricolage: Memoization
Sometimes there are exceptions to these perils. For example, the gethostbyname() function often takes a long time, because Perl has to open a network socket, send data to the name server, and wait for the reply to come back. Memoizing gethostbyname() is technically incorrect, because the address data might change between calls. But in practice, address data doesn't change very quickly, and memoizing gethostbyname() doesn't lead to any real problems except in long-running programs........
http://perl.plover.com/MiniMemoize/memoize.html
TITLE : PHP: gethostbyname - Manual
Example #1 A simple gethostbyname() example.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$ip = gethostbyname('www.example.com');.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
If you do a gethostbyname() and there is no trailing dot after a domainname that does not resolve, this domainname will ultimately be appended to the server-FQDN by nslookup........
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
To avoid this behaviour, just add a trailing dot to the domainname; i.e. gethostbyname('nonexistentdomainname.be.').......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
gethostbyname($something);.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
var_dump(gethostbyname($hostname ));.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
if ($lookup != gethostbyname($lookup)) {.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$ipaddress = gethostbyname($nametotest);.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
On another note, it can be a pain (when iterating with while loops for example) that on failure gethostbyname() returns the hostname, rather than FALSE. You could wrap it in a simple user function, to "correct" this:.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$ip = gethostbyname($host);.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$ip= gethostbyname($host);.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
return gethostbyname($domain) != $domain;.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$ipaddress = gethostbyname($nametotest);.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$ip = gethostbyname($host);.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
Note that if you pass an IP address to gethostbyname() it will return that IP address........
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
$myIP = gethostbyname(trim(`hostname`));.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
if ($check != gethostbyname($check)) {.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
One note about using gethostbyname() for checking email address domains:.......
http://php.net/manual/en/function.gethostbyname.php
TITLE : PHP: gethostbyname - Manual
In PHP4 you can use gethostbyname() but I have found this unreliable when doing lookups on entries that return A records on the private network. PHP5 has a much better routine -- dns_get_record(). If you are stuck with PHP4 or don't want to upgrade you can use dig:.......
http://php.net/manual/en/function.gethostbyname.php
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