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Questions tagged [gethostbyname]

140 questions
29
votes
4 answers

Compile a static binary which code there a function gethostbyname

How to resolve compile a static binary which code include a function gethostbyname and if compiled without warning like this: warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc…
Loren Ramly
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3 answers

gethostbyname in C

I don't know how to write applications in C, but I need a tiny program that does: lh = gethostbyname("localhost"); output = lh->h_name; output variable is to be printed. The above code is used in PHP MongoDB database driver to get the hostname of…
Matic
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2 answers

Python attribute error: type object '_socketobject' has no attribute 'gethostbyname'

I am trying to do this in my program: dest = socket.gethostbyname(host) I have included the line: from socket import * in the beginning of the file. I am getting this error: AttributeError: type object '_socketobject' has no attribute …
Sheela
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2 answers

How to flush cache for socket.gethostbyname response?

Anyone run into this before: After updating DNS records..I do a dig for 'test.somedomain.com' I get 167.69.143.234, however when I do a socket.gethostbyname('test.somedomain.com') I get 167.69.6.234. I'm guessing socket is still using cache...how…
Jim
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7
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2 answers

Difference between GetHostEntry and GetHostByName?

On MSDN it mentions GetHostByName is obsolete. The replacement is GetHostEntry. What are their difference?
KMC
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7
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2 answers

What's wrong with gethostbyname?

I am using this snippet of code I found in http://www.kutukupret.com/2009/09/28/gethostbyname-vs-getaddrinfo/ to perform dns lookups #include #include #include #include #include #include…
Ottavio Campana
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7
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1 answer

IP address order in gethostbyname function

Since I got no answer on my previous question, I will rephrase it. What order of IP addresses (in case when IP addresses are bound to one interface) is used when doing gethostbyname() using PC name (NetBIOS name)? I have this code: #include…
splattru
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3 answers

nodejs cannot resolve 'localhost' on windows

The following code produces an exception in node.js under windows: var Socket = require("net").Socket; socket = new Socket(); socket.connect(80, "localhost"); here's the message: events.js:2083: Uncaught Error: getHostByName ENOTFOUND When I…
Corno
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6
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3 answers

Alternative to gethostbyname

I can't use gethostbyname to grab a host's IP address, it is a deprecated function that only works 10% of the fricken' time on Windows! I can't find any adequate resources on other ways to find a host's IP address using other functions (MSDN…
Saustin
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6
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2 answers

Asynchronous address resolution in winsock?

Looking into asynchronous address resolution in winsock it seems that the only two options are either to use the blocking gethostbyname on a seperate thread, or use WSAAsyncGetHostByName. The latter is designed for some reason to work with window…
sold
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PHP: gethostbyname bug

I am using gethostbyname() to get the ip address of domains in an application. In some cases invalid addresses like '50.9.49' are checked also. echo gethostbyname('50.9.49'); // returns 50.9.0.49 In this cases gethostbyname should return false or…
Martin Abraham
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2 answers

When doing socket programming, what is the correct way to look up a domain name and then connect to it?

I've programmed networked applications, but primarily in Python. I'm writing a C++ application and I'm a little fuzzy on exactly what the syntax should be to look up a domain name and connect to it's IP address. Specifically, I'm not sure how to go…
EB.
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1 answer

Odd String Issue in C

I am writing some code that uses the function gethostbyname(). This function requires that I pass it a string of the host I am trying to find the host for. Right now I have my string declared in an array of characters, with a null byte at the end so…
user494216
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Why `getaddrinfo` doesn't support aliases?

Unlike gethostbyname, the function getaddrinfo does not return a list of alias names for a hostname. What was the reason to not include this information in the getaddrinfo result? I searched for a reference to this decision in: IETF mail…
Christian Ammer
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1 answer

Connecting a socket, using getaddrinfo, times out

I spent hours trying to find out my issue, just found the solution as I was writing my question (it always help when you need to formalize your issue and explain it). I post it, hopefully it helps someone. Using getaddrinfo, if I try to connect a…
Pellekrino
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