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在iOS6.1上，以下代碼應該做同樣的事情，但是當我忘記編寫addr.sin_len = sizeof(adde)時，第一個塊失敗。原來的錯誤是：爲什麼當CFStreamCreatePairWithSocketToHost成功時CFStreamCreatePairWithSocketToCFHost失敗
GOT EVENT FROM INPUT Event: 8
ERR: Error Domain=NSPOSIXErrorDomain Code=12 "The operation couldn’t be completed. Cannot allocate memory"
在添加缺少的行來設置結構大小後，第一個塊就像第二個塊一樣工作。其他開發人員可能會在該帖子中看到該錯誤消息和旅程。
的代碼：
CFReadStreamRef readStream = NULL;
CFWriteStreamRef writeStream = NULL;
#if 1 // LONG WAY
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_len = sizeof(addr); // ORIGINALLY WAS MISSING
addr.sin_family = AF_INET;
addr.sin_port = htons(5566);
int ret = inet_pton(AF_INET, "192.168.1.2", &(addr.sin_addr.s_addr)); // IPv4
assert(ret == 1);
NSLog(@"CONNECT");
CFDataRef address = CFDataCreate(kCFAllocatorDefault, (const UInt8 *)&addr, sizeof(addr));
assert(address);
CFHostRef macMini = CFHostCreateWithAddress(kCFAllocatorDefault, address);
CFRelease(address);
assert(macMini);
// (tried, makes not difference) CFHostScheduleWithRunLoop (macMini, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
CFStreamCreatePairWithSocketToCFHost(kCFAllocatorDefault, macMini, 5566, &readStream, &writeStream);
CFRelease(macMini);
#else // SHORT WAY
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, CFSTR("192.168.1.2"), 5566, &readStream, &writeStream);
#endif
assert(readStream);
assert(writeStream);
iStream = CFBridgingRelease(readStream);
oStream = CFBridgingRelease(writeStream);
[iStream setDelegate:self];
[iStream scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
[iStream open];
NSLog(@"ISTREAM %@ status=%d", iStream, [iStream streamStatus]);
NSLog(@"ERR: %@", [iStream streamError]);
[oStream setDelegate:self];
[oStream scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
[oStream open];
NSLog(@"OSTREAM %@ status=%d", oStream, [oStream streamStatus]);
NSLog(@"ERR: %@", [oStream streamError]);