NSNetService 工作正常，但无法获取主机名，解析导致错误

发布于 2024-11-17 12:35:12 字数 681 浏览 6 评论 0原文

我使用 Bonjour 和 NSNetService 从我的 iPhone 发布服务器。一切都按预期工作，我可以浏览我正在服务的页面等。但是，在 iPhone 上我想显示主机名（即 URL，如“myDevice.local”。），以便人们也可以输入在浏览器中手动输入地址（对于缺少 bonjour 发现服务的客户端很有用）。我的理解是，调用方法 [myNetService hostName] 应该给我该地址。然而，这个调用总是返回nil。我在一些论坛上读到，我首先应该解决该服务，但是 [myNetServiceresolve] 和 [myNetServiceresolveWithTimeout:10] 都调用了

- (void)netService:(NSNetService *)sender didNotResolve:(NSDictionary *)errorDict;

带有错误的

{
    NSNetServicesErrorCode = -72003;
    NSNetServicesErrorDomain = 10;
}

委托方法，这显然意味着它已经解决了。同样，这一切都是在我可以使用该服务时发生的。我还可以获得端口、域和服务类型。唯一奇怪的事情是调用 [myNetService 地址] 返回一个空数组。

我使用的是 SDK 3.1.3。有人知道我可能做错了什么吗？

原文

I'm using Bonjour with an NSNetService to publish a server from my iPhone. It all works as expected, I can browse the pages I'm serving etc. However, on the iPhone I want to display the host name (i.e. the URL, like "myDevice.local."), so that one can also enter the address manually in a browser (useful for clients missing a bonjour discovery service). My understanding is that calling the method [myNetService hostName] should give me that address. However, this call always returns nil. I read on some forum that I first should resolve the service, however both [myNetService resolve] and [myNetService resolveWithTimeout:10] call the delegate method

- (void)netService:(NSNetService *)sender didNotResolve:(NSDictionary *)errorDict;

with the error

{
    NSNetServicesErrorCode = -72003;
    NSNetServicesErrorDomain = 10;
}

which apparently means that it is already resolved. Again, all this is happening while i can use the service. Also I can get the port, the domain, and the type of the service. The only other strange thing is that the call [myNetService addresses] returns an empty array.

I'm using SDK 3.1.3. Does anybody have an idea what I could be doing wrong?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

柠檬心 2024-11-24 12:35:12

[[NSProcessInfo processInfo] hostName] 方法对我来说没有用，原因有两个：

如果蜂窝数据处于活动状态，它会在我的提供商的域中返回一些奇怪的主机名
如果只有 WiFi，则主机名没问题，但全部小写

以下代码来自 http://iphoneappcode.blogspot.com/2012/05/how-to-get-device-ipaddess-in-iphone.html 最适合我，总是返回本地主机名敏感大小写：

+ (NSString *) hostname
{
    char baseHostName[256]; 
    int success = gethostname(baseHostName, 255);
    if (success != 0) return nil;
    baseHostName[255] = '\0';

#if !TARGET_IPHONE_SIMULATOR
    return [NSString stringWithFormat:@"%s.local", baseHostName];
#else
     return [NSString stringWithFormat:@"%s", baseHostName];
#endif
}

The [[NSProcessInfo processInfo] hostName] method was not useful for me for two reasons:

If celular data is active, it returns some weird hostname at my provider's domain
If there's only WiFi, the host name is ok, but all lower case

The following code from http://iphoneappcode.blogspot.com/2012/05/how-to-get-device-ipaddess-in-iphone.html worked best for me, always returning the local host name with sensitive case:

+ (NSString *) hostname
{
    char baseHostName[256]; 
    int success = gethostname(baseHostName, 255);
    if (success != 0) return nil;
    baseHostName[255] = '\0';

#if !TARGET_IPHONE_SIMULATOR
    return [NSString stringWithFormat:@"%s.local", baseHostName];
#else
     return [NSString stringWithFormat:@"%s", baseHostName];
#endif
}

回复收藏 0 原文