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已經綁定地址這是我udp_broadcast服務器代碼,其中在客戶端IAM廣播包255.255.255.255上0.0.0.0不能使用
try{
socket = new DatagramSocket (7777,InetAddress.getByName("0.0.0.0"));
socket.setBroadcast(true);
while(true)
{
System.out.println(getClass().getName()+"ready recieve broadcast packets!");
//recieve a packet
byte[] recvBuf = new byte[15000];
DatagramPacket packet = new DatagramPacket(recvBuf,recvBuf.length);
socket.receive(packet);
System.out.println(getClass().getName() +"packet recieved from :" +packet.getAddress().getHostAddress());
System.out.println("data is "+new String(packet.getData()));
String message = new String(packet.getData()).trim();
if(message.equals("p2p_project_node"))
{
byte [] senddata = "I_found_you_did_YOU".getBytes();
DatagramPacket sendpacket= new DatagramPacket(senddata,senddata.length,packet.getAddress(),packet.getPort());
socket.send(sendpacket);
System.out.println("packet sent to "+sendpacket.getAddress().getHostAddress());
}
}
}
亞姆聽,讓我從服務器獲取 答覆最終和我endup在獲得服務器的IP地址
udp_client_side代碼
try {
c = new DatagramSocket();
c.setBroadcast(true);
byte [] sendData = "p2p_project_node".getBytes();
//this is broadcasting to 255.255.255.255a
try{
DatagramPacket sendPacket = new DatagramPacket(sendData,sendData.length,InetAddress.getByName("255.255.255.255"),7777);
c.send(sendPacket);
System.out.println("rewuest sent to 255.255.255.255");
}
catch(Exception e) {
System.out.println("exception 255.255" +e);
}
在服務器端IAM越來越錯誤,指出
異常java.net.BindException「地址已在使用:無法綁定」
我要去哪裏錯了,如果有人可以幫助我,這將是巨大的感謝事先