相关疑难解决方法(0)

我正在获得一个VOIP套接字,以便在iOS应用程序中在后台运行.

我的连接工作正常,但当我的应用程序进入后台时它不会被唤醒.但是,如果我重新打开应用程序,它会响应它在睡眠时收到的任何消息.

我像这样设置我的流:

CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault,
                                   (CFStringRef) @"test.iusealocaltestserver.com",
                                   5060,
                                   &myReadStream,
                                   &myWriteStream);
CFReadStreamSetProperty (    myReadStream,
                             kCFStreamNetworkServiceType,
                             kCFStreamNetworkServiceTypeVoIP
                             );

CFSocketNativeHandle native;
CFDataRef nativeProp = CFReadStreamCopyProperty(myReadStream, kCFStreamPropertySocketNativeHandle);

CFDataGetBytes(nativeProp, CFRangeMake(0, CFDataGetLength(nativeProp)), (UInt8 *)&native);
CFRelease(nativeProp);

CFSocketRef theSocket = CFSocketCreateWithNative(kCFAllocatorDefault, native, 0, NULL, NULL);

CFSocketGetContext(theSocket,&theContext);    


CFOptionFlags readStreamEvents = kCFStreamEventHasBytesAvailable | 
kCFStreamEventErrorOccurred     |
kCFStreamEventEndEncountered    |
kCFStreamEventOpenCompleted;

CFReadStreamSetClient(myReadStream,
                           readStreamEvents,
                           (CFReadStreamClientCallBack)&MyCFReadStreamCallback,
                      (CFStreamClientContext *)(&theContext));

CFReadStreamScheduleWithRunLoop(myReadStream, CFRunLoopGetCurrent(),
                                kCFRunLoopCommonModes);

然后我的回调设置如下:

static void MyCFReadStreamCallback(CFReadStreamRef stream, CFStreamEventType type, void *pInfo);

static void MyCFReadStreamCallback (CFReadStreamRef stream, CFStreamEventType type, void *pInfo)
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; …

我有一个VoIP应用程序,使用TCP服务唤醒来电.使用此代码片段创建TCP套接字:

CFReadStreamRef read = NULL;
CFWriteStreamRef write = NULL;
...
CFStreamCreatePairWithSocketToHost(NULL,(__bridge CFStringRef)shost, port, &read, &write);
self.read = (__bridge NSInputStream*)read;
self.write = (__bridge NSOutputStream*)write;
if (![self.read setProperty:NSStreamNetworkServiceTypeVoIP
                     forKey:NSStreamNetworkServiceType]){
    [Log log:@"Could not set VoIP mode to read stream"];
}
if (![self.write setProperty:NSStreamNetworkServiceTypeVoIP
                      forKey:NSStreamNetworkServiceType]){
    [Log log:@"Could not set VoIP mode to write stream"];
}
self.read.delegate = self;
self.write.delegate = self;
CFRelease(read);
CFRelease(write);
[self.read scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
[self.write scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
[self.read open];
[self.write open];

我还设置了以下内容:

1. 信息plist中的VoIP和音频
2. 使用[UIApplication sharedApplication] setKeepAliveTimeout保持活动计时器
3. 在信息plist中UIRequiresPersistentWiFi = YES(非常确定它不是必需的,但......)

这应用程序处于前台时效果很好,甚至在后台运行良好几分钟,但几分钟后 …