gethostbyname

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 messages, instead of overlapped operations and completion ports/routines. Is there any version of gethostbyname that works asynchronously with overlapped operations in a similiar manner to the rest of the winsock API? Unfortunately there isn't at present, although GetAddrInfoEx() has placeholders for all the right things for async operation via all

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 do I clear it ? or flush it? My code is very simple: Linux Termianl dig test.somedomain.com Python: import socket socket.gethostbyname('test.somedomain.com') It should be returning the 167.69.143.234 address as that is the updated one in DNS. Python's socket.gethostbyname uses the operating system resolver and has no API for clearing its cache. The

gethostname() ：返回本地主机的标准主机名 原型： #include<unistd.h> int gethostname(char *name, size_t len); 参数说明： name： 接收缓冲区，字节长度必须为len，或更长，存获取主机名 len： 接收缓冲区name的最大长度 返回值： 如果函数成功，返回0，如果发生错误，返回-1，错误号存放在外部变量errno中。 /* gethostname.c */ #include<stdio.h> #include<stdlib.h> #include<unistd.h> #define ERR_EXIT(m) \ do {\ perror(m); \ exit(EXIT_FAILURE); \ }while(0); int main() { char name[256]; if (gethostname(name, sizeof(name))) { ERR_EXIT("gethostname"); } printf("hostname = %s\n",name); return 0; } 运行结果： gethostbyname() 函数原型： #include <netdb.h> #include <sys/socket.h> struct hostent *gethostbyname(const char

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 'gethostbyname' I am running Vista 64bit. Could there be a problem with my OS? I have turned down my firewall and everything. You shoulod either use import socket dest = socket.gethostbyname(host) or use from socket import * dest = gethostbyname(host) Note: the first option is by far the recommended one. After from socket import * , you'd need to call just the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to retrieve the FQDN name of windows server via powershell script. I have found 2 solution so far: $server = Invoke-Command -ScriptBlock {hostname} Above line will print just the short name of the server $sysinfo = Get-WmiObject -Class Win32_ComputerSystem $server = “{0}.{1}” -f $sysinfo.Name, $sysinfo.Domain Above two line will get me the FQDN but this looks really nasty code to retrieve just the hostname :( So, My question is, is there an easier way to get the FQDN in powershell. I am a bash/perl coder and recently picked up

Hey guys, I'm new at this stuff, but I'm trying to use gethostname() to work using xcode and the ipad. I've tried a couple of things, but they all seem to freeze up. So when I just do: host = gethostbyname("website.com"); that works fine. I'd like to be able to change the website from within the program though. I've tried: const char *server = [Website_NSString UTF8String]; host = gethostbyname(server); const char *server = [Website_NSString cStringUsingEncoding:NSASCIIStringEncoding]; host = gethostbyname(server); const char *server[256]; [Website_NSString getCString:server maxLength:256

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 the computer (hostname is part of an input to generate an unique ID). I'm skeptical that this will return the hostname, so I'd like some proof. Any code examples would be most helpful. Happy day. #include <stdio.h> #include <netdb.h> int main(int argc, char *argv[]) { struct hostent *lh = gethostbyname("localhost"); if (lh) puts(lh->h_name); else

At startup, IPython (qtconsole) calls socket.gethostbyname_ex(socket.gethostname())[2] to find a list of IP addresses that point to the machine. On a Linux server that I manage this call is extremely slow (>20s)... which I have trouble understanding as ip addr show seems to give the same information nearly instantaneously. Is there anything I can do to make this faster? Can this be a network configuration issue (I am behind a router)? This issue is independent of IPython: $ time python -c 'import socket; print(socket.gethostbyname_ex(socket.gethostname())[2])' ['192.168.0.102'] python -c 0.07s