我正在创建一个应用程序，其中udp服务器将监听所有客户端，例如。来自pc或iphone或任何其他客户。但是，如果我发送数据包，服务器端没有任何事情发生。 `服务器：
public class Server implements Runnable {
@Override
public void run() {
while(start==false)
{
}
try {
WifiManager wm=(WifiManager)getSystemService(WIFI_SERVICE);
updatetrack("nServer: Start connectingn" + Inet4Address.getLocalHost().getHostAddress() );
DatagramSocket socket=new DatagramSocket(58797);
byte[] buf = new byte[1024];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
updatetrack("Server: Receivingn");
byte [] arr =new byte[10000];
int j=0;
int x=0;
while(true){
packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
//buf=packet.getData();
x=0;
/*if (buf.length < 10)
{
String string2=(new String(buf));
// break;
}*/
String string2=new String(packet.getData(),0,packet.getLength());
if(string2.equals(":")){
Bitmap bd = BitmapFactory.decodeByteArray(arr,0,arr.length);
// update_iv(bd);
ImageView iv=(ImageView)findViewById(R.id.imageView1);
iv.setImageBitmap(bd);
this.wait(111111111);
break;
}
for(int i=j;i<packet.getData().length;i++){
arr[i]=packet.getData()[x++];
j++;
}
}
updatetrack("Server: Received");
} catch (Exception e) {
updatetrack("Server: Error!n"+e.getMessage());
}
}
}`
Client on my pc:
void sendstring(){
try {
InetAddress serverAddr = InetAddress.getByName("192.168.1.15");
System.out.println("Client: Start connectingn");
DatagramSocket socket = new DatagramSocket();
byte[] sendData = new byte[1024];
byte[] buf = new byte[1024];
String sentence;
int bytesRead = 0;
/*while((bytesRead = bis.read(buf))!=-1){
// sendData = new String(buf, 0, bytesRead);
//sendData = sentence.getBytes();
DatagramPacket sendPacket = new DatagramPacket(buf, buf.length,
serverAddr, 58797);
socket.send(sendPacket);
}*/
String string =new String("hello world");
sendData = string.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendData, string.length(),
serverAddr, 58797);
socket.send(sendPacket);
string =new String(":");
sendData = string.getBytes();
sendPacket = new DatagramPacket(sendData, string.length(),
serverAddr, 58797);
socket.send(sendPacket);
/*
if(!input.getText().toString().isEmpty())
{
buf=input.getText().toString().getBytes();
}
else
{
buf = ("Default message").getBytes();
}
DatagramPacket packet = new DatagramPacket(buf,
buf.length, serverAddr, SERVERPORT);
updatetrack("Client: Sending ‘" + new String(buf) + "’n");
socket.send(packet);
updatetrack("Client: Message sentn");
updatetrack("Client: Succeed!n");*/
} catch (Exception e) {
System.out.println("Client: Error!n"+e.getMessage());
}
}