gethostbyname xcode问题 [英] gethostbyname xcode issues

问题描述

嘿伙计们，我是新手，但我正在尝试使用gethostname（）来使用xcode和ipad。我尝试了几件事，但他们似乎都冻结了。

所以当我这样做时：

  host = gethostbyname（ website.com）; 
  

工作正常。我希望能够在程序中更改网站。

我试过：

  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 encoding：NSASCIIStringEncoding]; 
 host = gethostbyname（Website_NSString）; 
  

和

  host = gethostbyname（Website_NSString）; 
  

他们要么提出警告：从不兼容的指针传递'gethostbyname'的参数1输入，或根本没有警告。仍然每次应用程序只是冻结。请帮忙。

解决方案

我是个白痴。如果我这样做：

  char server [256]; 
 [Website_NSString getCString：server maxLength：256 encoding：NSASCIIStringEncoding]; 
 host = gethostbyname（server）; 
  

一切正常。

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 encoding:NSASCIIStringEncoding];    
host = gethostbyname(Website_NSString);

and

host = gethostbyname(Website_NSString);

They've either come up with a the warning: Passing argument 1 of 'gethostbyname' from incompatible pointer type, or no warning at all. Still everytime the app just freezes. Please help.

解决方案

I'm an idiot. If I do:

char server[256];
[Website_NSString getCString:server maxLength:256 encoding:NSASCIIStringEncoding];
host = gethostbyname(server);

It works fine.

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