Network

The Network project is an encrypted, high-performance, event-driven/reactive Network stack with DNS and RMI, using Netty, Kryo, KryoNet RMI, and LZ4 via TCP/UDP.

These are the main features:

• The connection between endpoints is AES256-GCM / EC curve25519. (WIP, this was updated for use with Aeron, which changes this)
• The connection data is LZ4 compressed and byte-packed for small payload sizes. (WIP, this was updated for use with Aeron, which changes this)

• The connection supports:

• Remote Method Invocation

  • Blocking
  • Non-Blocking
  • Void returns
  • Exceptions can be returned
  • Kotlin coroutine suspend functions

• Sending data when Idle

• "Pinging" the remote end (for measuring round-trip time)

• Firewall connections by IP+CIDR

• Specify the connection type (nothing, compress, compress+encrypt)

• The available transports are TCP and UDP

• There are simple wrapper classes for:

  • Server
  • Client
  • MultiCast Broadcast client and server discovery (WIP, this was updated for use with Aeron, which changes this)

• Note: There is a maximum packet size for UDP, 508 bytes to guarantee it's unfragmented

• This is for cross-platform use, specifically - linux 32/64, mac 64, and windows 32/64. Java 1.8+

public static
class AMessage {
    public
    AMessage() {
    }
}

KryoCryptoSerializationManager.DEFAULT.register(AMessage.class);

Configuration configuration = new Configuration();
configuration.tcpPort = tcpPort;
configuration.host = host;

final Server server = new Server(configuration);
addEndPoint(server);
server.bind(false);

server.listeners()
      .add(new Listener<AMessage>() {
          @Override
          public
          void received(Connection connection, AMessage object) {
              System.err.println("Server received message from client. Bouncing back.");
              connection.send()
                        .TCP(object);
          }
      });

Client client = new Client(configuration);
client.disableRemoteKeyValidation();
addEndPoint(client);
client.connect(5000);

client.listeners()
      .add(new Listener<AMessage>() {
          @Override
          public
          void received(Connection connection, AMessage object) {
              ClientSendTest.this.checkPassed.set(true);
              System.err.println("Tada! It's been bounced back.");
              server.stop();
          }
      });

client.send()
      .TCP(new AMessage());

   

Maven Info

<dependencies>
    ...
    <dependency>
      <groupId>com.dorkbox</groupId>
      <artifactId>Network</artifactId>
      <version>5.28</version>
    </dependency>
</dependencies>

Gradle Info

dependencies {
    ...
    implementation("com.dorkbox:Network:5.28")
}

License

This project is © 2021 dorkbox llc, and is distributed under the terms of the Apache v2.0 License. See file "LICENSE" for further references.