我正在尝试使用CFStream获得简单的HTTP通信,但是使用下面的代码,即使给出无效的URL(wwwww.yahoo.com),我仍然可以获得连接成功。通过CFStream的HTTP请求
有人能指点我这个代码有什么问题吗?我希望调用CFReadStreamOpen()失败,但即使URL不好,它仍然成功。
我一直无法找到一个简单的CFNetwork例子,它可以在ARC上运行HTTP(不使用NSURL)。如果有人知道这样的示例代码,请让我知道。
- (void) test
{
CFStringRef m_host = CFStringCreateWithCString(NULL, "wwwww.yahoo.com", kCFStringEncodingASCII);
int m_port = 80;
CFHostRef host;
NSLog(@"Attempting to (re)connect to %@:%d", m_host, m_port);
{
CFReadStreamRef m_in = NULL;
CFWriteStreamRef m_out = NULL;
host = CFHostCreateWithName(kCFAllocatorDefault, (CFStringRef)m_host);
if (!host)
{
NSLog(@"Error resolving host %@", m_host);
}
CFStreamCreatePairWithSocketToCFHost(kCFAllocatorDefault, host , m_port, &m_in, &m_out);
CFRelease(host);
CFStreamClientContext context = {0, nil,nil,nil,nil};
if (CFReadStreamSetClient(m_in, kCFStreamEventHasBytesAvailable | kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered, networkReadEvent, &context))
{
CFReadStreamScheduleWithRunLoop(m_in, CFRunLoopGetCurrent(),kCFRunLoopCommonModes);
}
if (CFWriteStreamSetClient(m_out, kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered, networkWriteEvent, &context))
{
CFWriteStreamScheduleWithRunLoop(m_out, CFRunLoopGe tCurrent(),kCFRunLoopCommonModes);
}
BOOL success = CFReadStreamOpen(m_in);
CFErrorRef error = CFReadStreamCopyError(m_in);
if (!success || (error && CFErrorGetCode(error) != 0))
{
NSLog(@"Connect error %s : %ld", CFErrorGetDomain(error), CFErrorGetCode(error));
[NSThread sleepForTimeInterval:5.0];
}
success = CFWriteStreamOpen(m_out);
error = CFReadStreamCopyError(m_in);
if (!success || (error && CFErrorGetCode(error) != 0))
{
NSLog(@"Connect error %s : %d", CFErrorGetDomain(error), CFErrorGetCode(error));
[NSThread sleepForTimeInterval:5.0];
}
else
{
NSLog(@"Connected");
}
}
}