無法在Iphone上收到UDP數據包w/AsyncUdpSocket

Question

嗨，我正在一個項目在學校工作，我有問題，我能夠發送UDP數據包到不同的地址，但我無法讀取發送到我的iPhone的UDP數據包，接收UDP數據包後，我希望數據出現在標籤，即時通訊做錯了什麼，但我不知道是什麼.....我的代碼：

- (BOOL)onUdpSocket:(AsyncUdpSocket *)sock didReceiveData:(NSData *)data withTag:(long)tag fromHost:(NSString *)host port:(UInt16)port 
{ 
    NSLog(@"Incoming data"); 

    [sock receiveWithTimeout:1 tag:0]; 
    NSString *receiveddata = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; 
    // NSString *receiveddata = data ; 
    self.testudp.text = receiveddata; 
    return YES; 
} 

Answer 1

這就是我所做的更改：

AsyncUdpSocket *udpsocket; 
udpsocket = [[AsyncUdpSocket alloc] initWithDelegate:self]; 
[udpsocket enableBroadcast:YES error:nil]; 
[udpsocket bindToPort:1234 error:nil]; 
[udpsocket receiveWithTimeout:-1 tag:0]; 

- (BOOL)onUdpSocket:(AsyncUdpSocket *)sock didReceiveData:(NSData *)data withTag:(long)tag fromHost:(NSString *)host port:(UInt16)port{ 
    NSLog(@"received data"); 
    NSString *receiveddata = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; 
    _testudp.text = receiveddata;