gethostbyaddr returns IP

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socket.gethostbyaddr() doesn't show existing aliases

by: Sibylle Koczian | last post by:

Hello all, the documentation for the socket module says that gethostbyaddr should return the primary host name and alternative host names if there are any. But the alias list is empty even in cases where I know aliases exist. I can get them using gethostbyname_ex, but that only works with names, not with IP addresses, and I want to resolve both sorts. I'm using Python 2.3.2 on Windows NT4, SP6.

Python

2693

gethostbyaddr returning null for CNAME records

by: Neil Aggarwal | last post by:

Hello: I am using gcc on RedHat Linux 9. When I try to do a reverse dns query using gethostbyaddr, it works fine for hosts that have a PTR record, but it returns null for hosts that have a CNAME record. Any ideas how to work around this? Here is an example: dig -x 66.54.79.4

C / C++

4987

gethostbyaddr/nslookup failed

by: kcw3388 | last post by:

Hi, I have a SunOS TCP/IP client program worked fine for a long time until yesterday. Now, my TCP/IP server program is located on different DNS server. The gethostbyaddr ( ) is now returned NULL instead.

C / C++

3192

socket.gethostbyaddr() question

by: Harlin Seritt | last post by:

I have a list of IP addresses I am testing with socket.gethostbyaddr(). For the most part, I am able to get a hostname returned to me when I run gethostbyaddr(). I am also hoping this will allow me to tell if a computer is up or down. However, in my environment, I am finding that I am able to get a hostname even though I am unable to actually ping that server (when I ping a server i like this, I get 'request timed out' messages telling me...

Python

1417

PHP and gethostbyaddr

by: Jørn Dahl-Stamnes | last post by:

I have a PHP script which contain the following code: $hostname = gethostbyaddr ($ip); Until yesterday, the gethostbyaddr returned the hostname of the given IP-addresse. But yesterday it began to return the name of the host the web-server is running on regardless of the given IP. If I do a 'host <IP>' from a shell on the same machine, I get the correct hostname. I have tried to restart the web-server (Apache 2.0) without luck.

PHP

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Problem with gethostbyaddr

by: christian9997 | last post by:

Hi Since yesterday about 11.00 CET the gethostbyaddr function doesn't seem to be working. All I get is the IP address back. Is this something general to all PHP users or is this specific to my server? Thanks BTW what's the difference between comp.lang.php, alt.php and alt.comp.lang.php, shouldn't these groups be merged?

PHP

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problem with gethostbyaddr with intranet addresses on MAC

by: shailesh | last post by:

Hi, I am facing a peculiar problem. socket.gethostbyaddr is not working fine on my MAC for ip addresses on the LAN. The LAN happens to consist of linux and windows machines and this is the only one MAC on the LAN. Please see the example below. I am getting error: socket.herror: (1, 'Unknown host')

Python

3124

why gethostbyaddr() is not safe?

by: lakshmiraja | last post by:

hi, I came to know that gethostbyaddr is deprecated in Visual Studio 2005 by the introduction of getnameinfo function. Can i know the reason for the deprecation of gethostbyaddr function. Is there any security issues related with this function? Also came to know that calling this function is not thread safe. I am not able to get the exact reason for not using gethostbyaddr function.

C / C++

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gethostbyaddr() bottleneck?

by: RJ_32 | last post by:

When there is no rDNS record on an IP address, then it might take a while for the reverse lookup to timeout. I'm thinking of how on a tracert you can observe the delay. If so, then calling gethostbyaddr() can delay the serving of the web page, right? Because gethostbyaddr() is not forked into a separate process. So I suppose I'd need to call gethostbyaddr() as the very last task for a script. Does that sound right? Or is there another...

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8205

Changing the language in Windows 10

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Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...

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Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...

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The easy way to turn off automatic updates for Windows 10/11

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Access Europe - Using VBA to create a class based on a table - Wed 1 May

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transfer the data from one system to another through ip address

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Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system

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How to add payments to a PHP MySQL app.

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Comprehensive Guide to Website Development in Toronto: Expert Insights from BSMN Consultancy

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