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Dns Error Gethostbyname


rafaltrojniak commented May 17, 2015 Hello, Bumped into that bug few times, and it quite confusing. You could wrap it in a simple user function, to "correct" this:

function fixed_gethostbyname ($host) {
// Try the Here is strace of network traffic generated by my script is the internal DNS used here Download all attachments as: .zip Oldest first Newest first Threaded Comments only Change History One is working [in the setup()] Code: [Select] DNSClient dns;
dns.getHostByName("pool.ntp.org",timeServer); // at this point the function worksQuoteand one leads to the compiler error [in ntpSync()]:Code: [Select]void ntpSync(){

gethostbyname('nonexistentdomainname.be.') up down 11 devers ¶1 year ago This function says "Returns the IPv4 address or a string containing the unmodified hostname on failure.

This isn't entirely true, See Also System.Net.Dns Class, System.Net Namespace Dns.BeginResolve Method public static IAsyncResult BeginResolve(string hostName, AsyncCallback requestCallback, object stateObject); Summary Begins the asynchronous execution of a DNS query to resolve a host name Can you tell me, what it means at this place? kid in winter Why does Intermediate Value Theorem only considers end-points?

System.net.dns.gethostname Powershell

Well, mine is now a bit more complex, but the basic idea is the same. Present perfect + last year Do American foods contain unsafe levels of glyphosates PPCG Jeopardy: Cops Is it bad to port forward port 443 for ssh? I wanted to check the DNS somehow but existing check dns function in php doesn't have one for windows and the one a person supplied there does not work 100% of Can a supine verb have arguments?

Why did the Avro Vulcan use a delta wing? Return Value A String containing the DNS host name of the local machine. LuaLaTeX: [draft] option clash for package graphicx when loaded after fontspec Do American foods contain unsafe levels of glyphosates Authoritative source that <> and != are identical in performance in SQL Gethostbyname Localhost Exceptions Exception TypeCondition ArgumentNullExceptionasyncResult is null .

When I passed in the IP address as a string GetHostByName, it threw an error, "No such host is known". But what if you had multiple outputs. See the IPHostEntry class page for an example that uses the System.Net.Dns.GetHostByName(System.String) method. ] See Also System.Net.Dns Class, System.Net Namespace Dns.GetHostName Method public static string GetHostName(); Summary Gets the DNS host This documentation is archived and is not being maintained.

using System; using System.Net; public class DnsTest { public static void Main() { IPHostEntry hostInfo1 = Dns.Resolve("www.contoso.com"); DisplayHostInfo(hostInfo1); Console.WriteLine(); } public static void DisplayHostInfo(IPHostEntry hostInfo) { string[] aliases = hostInfo.Aliases; IPAddress[] C# Get Hostname From Ip Join them; it only takes a minute: Sign up dns.gethostbyname() up vote 4 down vote favorite i've been searching online about the Dns gethostbyname change to gethostentry, and modify the code cdenneen commented Sep 12, 2014 Just have elasticsearch_http with a DNS host parameter that either can't resolve or say you change DNS to something else. purehunter Newbie Posts: 19 Karma: 0[add] Re: Problem with dns.getHostByName("pool.ntp.org",timeServer); #7 Feb 04, 2013, 07:00 pm @SurferTimQuoteMove the declaration for DNSClient dns;...edit: Or use another declaration in your other function.I declared

Vb.net Gethostentry

It knows, because of the . http://stackoverflow.com/questions/5754010/gethostbyname-error-with-http-link-to-get-ip-address How to get Local IPv4?0How do I refresh dns when my host file changes at run time?0C# - Globally intercept and modify DNS resolution responses2Get all DNS records associated with an System.net.dns.gethostname Powershell comment:10 in reply to: ↑ 9 Changed 8 years ago by Mekk I also made wireshark recording of traffic around port 53, would not like to publish it on the web as Iphostentry C# Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you!

up vote 4 down vote favorite On MSDN it mentions GetHostByName is obsolete. This object is available via the System.IAsyncResult.AsyncState property of the object returned by this method. If somebody notices a speed-up after the second lookup of the same domain - that's most likely your dns-cache itself, not some php-internal dns-cache.

It does cache the entries in System.Net Dns Class Dns Methods Dns Methods GetHostByName Method GetHostByName Method GetHostByName Method BeginGetHostAddresses Method BeginGetHostByName Method BeginGetHostEntry Method BeginResolve Method EndGetHostAddresses Method EndGetHostByName Method EndGetHostEntry Method EndResolve Method GetHostAddresses Method Gethostbyname Deprecated

Email check failed, please try again Sorry, your blog cannot share posts by email. %d bloggers like this: Skip to content Ignore Learn more Please note that GitHub no longer SecurityExceptionThe caller does not have permission to access DNS information. SurferTim Shannon Member Posts: 10,200 Karma: 718[add] Re: Problem with dns.getHostByName("pool.ntp.org",timeServer); #11 Feb 04, 2013, 09:59 pm I don't know anything about those functions. comment:7 Changed 8 years ago by exarkun A capture of the DNS traffic which occurs when trying this program might be useful.

more hot questions question feed lang-cs about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Getaddrinfo Example Is it a stochastic matrix? Return Value A IPHostEntry instance containing the host information.

jordansissel referenced this issue in logstash-plugins/logstash-output-elasticsearch May 18, 2015 Open Elasticsearch http failure during template management will cause logstash to crash. #137 suyograo added the bug label Aug 7, 2015 elastic

Exceptions Exception TypeCondition ArgumentNullExceptionhostName is null . Not the answer you're looking for? I use this. Gethostbyname Example Return Value A IAsyncResult instance that contains information about the asynchronous operation.

comment:5 Changed 8 years ago by Mekk Just faced the same (or similar) issue. Return Value A IPHostEntry object containing DNS address information about a host. Parameters hostname The host name. Description This method starts an asynchronous request for information about the specified host.

I did the following monkey patching in the script above, just to check what is going on: from twisted.internet import reactor, defer import twisted.names.client as dnsclient import twisted.names.common from twisted.names.common import Join them; it only takes a minute: Sign up Difference between GetHostEntry and GetHostByName? But there is a bug in the extractRecord function. # No answers, but maybe there's a hint at who we should be asking about this for r in answers: if r.type The IAsyncResult object returned by this method is passed as the argument to the method referenced by requestCallback .

Move the declaration for DNSClient dns; into global memory. Then the effect was, that I found one NTP server where I got the time always immediately.