我目前正在使用可靠UDP协议的Java实现,找到here。该项目绝对没有教程,所以我发现很难找出问题。
我已经设置了客户端和服务器。服务器在localhost:1234上运行,客户端在localhost:1235上运行。首先建立服务器,并循环侦听连接 -
try {
ReliableSocket clientSocket = server.socket.accept();
InetSocketAddress clientAddress = (InetSocketAddress) clientSocket.getRemoteSocketAddress();
Logger.getLogger("ServerConnectionListener").info("New Connection from "+
clientAddress.getHostName()+":"+clientAddress.getPort()+" Processing...");
LessurConnectedClient client = new LessurConnectedClient(clientSocket);
ClientCommunicationSocketListener listener = new ClientCommunicationSocketListener(this, client);
clientSocket.addListener(listener);
} catch (Exception e) {
e.printStackTrace();
}
建立连接后,它会为该套接字上的事件创建一个侦听器 -
class ClientCommunicationSocketListener implements ReliableSocketListener {
ServerConnectionListener connectionListener;
LessurConnectedClient client;
public ClientCommunicationSocketListener(ServerConnectionListener connectionListener, LessurConnectedClient client){
this.connectionListener = connectionListener;
this.client = client;
}
@Override
public void packetReceivedInOrder() {
connectionListener.server.handlePacket(client);
}
@Override
public void packetReceivedOutOfOrder() {
connectionListener.server.handlePacket(client);
}
}
当收到数据包时,它会将其传递给server.handlePacket,后者执行打印“Packet Received!”的调试程序。
我的客户端连接到服务器 -
LessurClient client = new LessurClient();
InetSocketAddress a = (InetSocketAddress) server.getSocket().getLocalSocketAddress();
Logger.getLogger("client-connector").info("Trying to connect to server "+
a.getAddress().toString()+":"+
a.getPort());
client.connect(a.getAddress(), a.getPort());
// LessurClient.connect
public void connect(InetAddress address, int port){
try {
socket = new ReliableSocket(address, port, InetAddress.getLocalHost(), 1235);
isConnected = true;
Logger.getLogger("LessurClient").info("Connected to server "+address.getHostAddress()+":"+port);
} catch (IOException e) {
e.printStackTrace();
}
}
我已经链接了我的代码,所以当我按下'Z'键时,它会向服务器发送一个数据包 -
public void sendPacket(GamePacket packet){
if(!isConnected){
Logger.getLogger("LessurClient").severe("Can't send packet. Client is not connected to any server.");
return;
}
try {
OutputStream o = socket.getOutputStream();
o.write(packet.getData());
o.flush();
Logger.getLogger("LessurClient").info("Sending Packet with data \""+packet.getData()+"\" to server "+socket.getInetAddress().toString()+":"+socket.getPort());
} catch (IOException e) {
e.printStackTrace();
}
}
我的问题是,在发送32个数据包后,服务器不再接收数据包,并且在发送64个数据包后,它会崩溃。我调查了代码,看起来它与未从接收队列中删除的数据包相关联,就像我将ReliableSocket.java:1815中的 _recvQueueSize 变量从32更改为40,我现在可以发送40个包,没有出错。
有人可以帮我识别这个问题吗?我一直在看代码。
答案 0 :(得分:4)
我设法解决了这个问题。
你知道,由于这是RUDP的一个实现,它扩展了大多数Socket类。具体而言,ReliableSocket.getInputStream()被自定义编码为托管输入流。我的问题是,我收到了数据包,但没有从缓冲区读取。
当您收到数据包时,您应该从缓冲区中读取数据包,否则数据包将不会从队列中删除。
所以我所要做的就是,每当我收到一个数据包,读取数据包的大小,然后继续。