chore: Set reuseAddr by default for undertow.

Author: He-Pin

cask/src/cask/main/Main.scala

@@ -6,10 +6,11 @@ import cask.internal.{DispatchTrie, Util}
 import cask.main
 import cask.router.{Decorator, EndpointMetadata, EntryPoint, RawDecorator, Result}
 import cask.util.Logger
-import io.undertow.Undertow
+import io.undertow.{Undertow, UndertowOptions}
 import io.undertow.server.{HttpHandler, HttpServerExchange}
 import io.undertow.server.handlers.BlockingHandler
 import io.undertow.util.HttpString
+import org.xnio.Options
 
 import scala.concurrent.ExecutionContext
 
@@ -65,6 +66,9 @@ abstract class Main{
     if (!verbose) Main.silenceJboss()
     val server = Undertow.builder
       .addHttpListener(port, host)
+      .setSocketOption(Options.REUSE_ADDRESSES, java.lang.Boolean.TRUE)
+      .setSocketOption(Options.TCP_NODELAY, java.lang.Boolean.TRUE)
+      .setSocketOption(Options.USE_DIRECT_BUFFERS, java.lang.Boolean.TRUE)
       .setHandler(defaultHandler)
       .build
     server.start()