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network: process time out

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This commit is contained in:
Simon Pribylski
2025-03-06 12:02:42 +01:00
parent 72c62bb1b4
commit 462307dabc
4 changed files with 31 additions and 9 deletions
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29
ChatApp/app/src/main/java/network/PacketPool.java
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@@ -19,12 +19,13 @@ public class PacketPool {
private final Stack<ReliablePacketAddress> packetQueue;
private final Map<InetSocketAddress, AdressContext> addressContexts;
private final Socket socket;
private static int MAX_SEND_TRY = 50;
private static long RETRY_INTERVAL = 100;
private static float PACKET_LOSS_PROBABILITY = 0.75f;
private static long SEND_DELAY = 100;
private static long RETRY_INTERVAL = SEND_DELAY * 2;
private static float PACKET_LOSS_PROBABILITY = 0.5f;
private static record ReliablePacketAddress(ReliablePacket packet, InetSocketAddress address) {
@Override
@@ -89,9 +90,16 @@ public class PacketPool {
private void sendPacketToSocket(ReliablePacket packet, InetSocketAddress address) throws IOException {
var packetsSentTries = this.addressContexts.get(address).packetsSentTries;
if (Math.random() > PACKET_LOSS_PROBABILITY)
this.socket.sendPacket(packet, address);
new Thread(() -> {
try {
Thread.sleep(SEND_DELAY);
if (Math.random() > PACKET_LOSS_PROBABILITY)
this.socket.sendPacket(packet, address);
} catch (InterruptedException | IOException e) {
e.printStackTrace();
}
}).start();
if (packet.getPacket() instanceof AcknowlegdementPacket)
return;
@@ -131,11 +139,12 @@ public class PacketPool {
// the packet has been received
if (!packetsSentTries.containsKey(reliablePacketAddress.packet()))
break;
Integer sendCount = packetsSentTries.get(reliablePacketAddress.packet());
if (sendCount > MAX_SEND_TRY) {
close(reliablePacketAddress.address());
debugPrint("Packet" + reliablePacketAddress.packet() + " not send after " + MAX_SEND_TRY + " tries");
debugPrint(
"Packet" + reliablePacketAddress.packet() + " not send after " + MAX_SEND_TRY + " tries");
// simulating a fake disconnect packet
this.socket.handlePacket(new DisconnectPacket("Timed out"), reliablePacketAddress.address());
break;
@@ -161,7 +170,9 @@ public class PacketPool {
List<ReliablePacket> packetRecvBuffer = this.addressContexts.get(address).packetRecvBuffer;
if (packetRecvBuffer.isEmpty())
return null;
return Collections.min(packetRecvBuffer, (rel1, rel2) -> {return Integer.compare(rel1.getSeq(), rel2.getSeq());});
return Collections.min(packetRecvBuffer, (rel1, rel2) -> {
return Integer.compare(rel1.getSeq(), rel2.getSeq());
});
}
private int fillPacketQueue(InetSocketAddress address) {