Iphone CFStreamCreatePairWithSocketToCFHost中的内存泄漏

我正在转换可用的SKP_SMTP库，以便在我的iPhone应用程序中实现SMTP客户端。经过一段漫长而麻烦的bug修复和内存检查工作，我已经将问题缩小到只有一个。调用CFStreamCreatePairWithSocketToCFHost（由Instruments中的泄漏工具证明）时发生内存泄漏，这对我来说似乎很奇怪，因为CFReadStreamRef参数readStream和writeStream在稍后阶段被释放，或者通过\uuuu桥接\u传输分配给相应的NSStream对象（这将最终将流内存管理从CoreFoundation带到ARC）。 我在谷歌上搜索过，但我找到的唯一解决方案是垃圾收集（显然在ARC中不可用）：我是否遗漏了什么或不应该发生什么？ 代码如下：， 非常感谢

@implementation NSStream (SKPSMTPExtensions)

+ (void)getStreamsToHostNamed:(NSString *)hostName port:(NSInteger)port inputStream:  (NSInputStream **)inputStream outputStream:(NSOutputStream **)outputStream
{
    CFHostRef           host;
    CFReadStreamRef     readStream;
    CFWriteStreamRef    writeStream;

    readStream = NULL;
    writeStream = NULL;

    host = CFHostCreateWithName(NULL, (__bridge_retained CFStringRef) hostName);
    if (host != NULL) 
    {
        // Memory leak at this line: strange as readStream & writeStream are either   CFReleased or _bridge_transfered to ARC 
        (void) CFStreamCreatePairWithSocketToCFHost(NULL, host, port, &readStream,   &writeStream);
        CFRelease(host);
    }

    if (inputStream == NULL) 
    {
        CFRelease(readStream);
    } 
    else 
    {
        *inputStream = (__bridge_transfer NSInputStream *) readStream;
    }
    if (outputStream == NULL) 
    {
        CFRelease(writeStream);
    } 
    else 
    {
        *outputStream = (__bridge_transfer NSOutputStream *) writeStream;
    }

}

@end

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我认为这句话泄露了主机名：

host = CFHostCreateWithName(NULL, (__bridge_retained CFStringRef) hostName);

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你应该使用

\u桥

演员阵容，而不是

\u桥

演员阵容。

几年后如何注意你的答案：）…谢谢rob