真的iPhone設備上有沒有像'getStreamsToHost'的東西？

Question

我想寫一個NSOutputStream到服務器與蘋果的示例代碼：

NSURL *website = [NSURL URLWithString:str_IP]; 
NSHost *host = [NSHost hostWithName:[website host]]; 
[NSStream getStreamsToHost:host port:1100 inputStream:nil outputStream:&oStream]; 
[oStream retain]; 
[oStream setDelegate:self]; 
[oStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; 
[oStream open]; 

這些代碼行之有效的iPhone模擬器，但是當我把它建到真實的設備。兩個警告彈出。問題是：

1）類NSHost不屬於iPhone OS的庫

2）getStreamsToHost沒有發現任一

的替代方法或類的任何建議它可以在實際設備中使用？

Answer 1

由於CFWriteStream是toll-free bridged到NSOutputStream可以使用CFStreamCreatePairWithSocketToHost讓你流對：

CFReadStreamRef readStream = NULL; 
CFWriteStreamRef writeStream = NULL; 
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, (CFStringRef)host, port, &readStream, &writeStream); 
if (readStream && writeStream) { 
    CFReadStreamSetProperty(readStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue); 
    CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue); 

    inputStream = (NSInputStream *)readStream; 
    [inputStream retain]; 
    [inputStream setDelegate:self]; 
    [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; 
    [inputStream open]; 

    outputStream = (NSOutputStream *)writeStream; 
    [outputStream retain]; 
    [outputStream setDelegate:self]; 
    [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; 
    [outputStream open]; 
} 

if (readStream) 
    CFRelease(readStream); 

if (writeStream) 
    CFRelease(writeStream);