try a different approach + remove bossGroup

Author: StefanBratanov

examples/android-chatter/build.gradle

@@ -22,27 +22,18 @@ android {
         }
     }
     packagingOptions {
-        exclude 'META-INF/io.netty.versions.properties'
-        exclude 'META-INF/INDEX.LIST'
-        exclude 'META-INF/versions/9/OSGI-INF/MANIFEST.MF'
-        exclude 'META-INF/license/LICENSE.aix-netbsd.txt'
-        exclude 'META-INF/native-image/io.netty/netty-codec-native-quic/jni-config.json'
-        exclude 'META-INF/native-image/io.netty/netty-codec-native-quic/reflect-config.json'
-        exclude 'META-INF/native-image/io.netty/netty-codec-native-quic/resource-config.json'
-        exclude 'META-INF/license/LICENSE.boringssl.txt'
-        exclude 'META-INF/license/LICENSE.mvn-wrapper.txt'
-        exclude 'META-INF/license/LICENSE.quiche.txt'
-        exclude 'META-INF/license/LICENSE.tomcat-native.txt'
-        exclude 'META-INF/license/LICENSE.jbzip2.txt'
-        exclude 'META-INF/license/LICENSE.webbit.txt'
-        exclude 'META-INF/license/LICENSE.snappy.txt'
-        exclude 'META-INF/license/LICENSE.protobuf.txt'
-        exclude 'META-INF/license/LICENSE.nghttp2-hpack.txt'
-        exclude 'META-INF/license/LICENSE.base64.txt'
-        exclude 'META-INF/license/LICENSE.commons-lang.txt'
-        exclude 'META-INF/license/LICENSE.jzlib.txt'
-        exclude 'META-INF/license/LICENSE.jctools.txt'
-        exclude 'META-INF/license/LICENSE.log4j.txt'
+        resources {
+            pickFirsts += setOf("META-INF/license/LICENSE")
+            excludes += setOf(
+                "META-INF/io.netty.versions.properties",
+                "META-INF/INDEX.LIST",
+                "META-INF/versions/9/OSGI-INF/MANIFEST.MF",
+                "META-INF/native-image/io.netty/netty-codec-native-quic/jni-config.json",
+                "META-INF/native-image/io.netty/netty-codec-native-quic/reflect-config.json",
+                "META-INF/native-image/io.netty/netty-codec-native-quic/resource-config.json"
+            )
+        }
+
     }
     kotlinOptions {
         jvmTarget = "11"

libp2p/src/main/kotlin/io/libp2p/transport/quic/QuicTransport.kt

@@ -62,9 +62,6 @@ class QuicTransport(
     private var workerGroup by lazyVar {
         MultiThreadIoEventLoopGroup(NioIoHandler.newFactory())
     }
-    private var bossGroup by lazyVar {
-        MultiThreadIoEventLoopGroup(1, NioIoHandler.newFactory())
-    }
     private var allocator by lazyVar { PooledByteBufAllocator(true) }
     private var multistreamProtocol: MultistreamProtocol = MultistreamProtocolV1
     private var incomingMultistreamProtocol: MultistreamProtocol by lazyVar { multistreamProtocol }
@@ -139,10 +136,7 @@ class QuicTransport(
         val allClosed = CompletableFuture.allOf(*everythingThatNeedsToClose.toTypedArray())
 
         return allClosed.thenCompose {
-            CompletableFuture.allOf(
-                workerGroup.shutdownGracefully().toVoidCompletableFuture(),
-                bossGroup.shutdownGracefully().toVoidCompletableFuture()
-            ).thenApply { }
+            workerGroup.shutdownGracefully().toVoidCompletableFuture()
         }
     }
 
@@ -286,9 +280,9 @@ class QuicTransport(
 
     override fun handles(addr: Multiaddr) =
         handlesHost(addr) &&
-            addr.has(UDP) &&
-            addr.has(QUICV1) &&
-            !addr.has(WS)
+                addr.has(UDP) &&
+                addr.has(QUICV1) &&
+                !addr.has(WS)
 
     fun quicSslContext(expectedRemotePeerId: PeerId?, trustManager: Libp2pTrustManager): QuicSslContext {
         val connectionKeys = if (certAlgorithm.equals("ECDSA")) generateEcdsaKeyPair() else generateEd25519KeyPair()
@@ -297,12 +291,12 @@ class QuicTransport(
         val cert = buildCert(localKey, connectionKeys.first)
         logger.info("Building {} keys and cert for peer id {}", certAlgorithm, PeerId.fromPubKey(localKey.publicKey()))
         return (
-            if (isClient) {
-                QuicSslContextBuilder.forClient().keyManager(javaPrivateKey, null, cert)
-            } else {
-                QuicSslContextBuilder.forServer(javaPrivateKey, null, cert).clientAuth(ClientAuth.REQUIRE)
-            }
-            )
+                if (isClient) {
+                    QuicSslContextBuilder.forClient().keyManager(javaPrivateKey, null, cert)
+                } else {
+                    QuicSslContextBuilder.forServer(javaPrivateKey, null, cert).clientAuth(ClientAuth.REQUIRE)
+                }
+                )
             .trustManager(trustManager)
             .applicationProtocols("libp2p")
             .build()