EpollTransport: respect extended keepalive parameters TCP_KEEPIDLE, TCP_KEEPCNT and TCP_KEEPINTVL for clients, not just servers

Author: ivu-mawi

src/main/java/io/vertx/core/impl/transports/EpollTransport.java

@@ -168,6 +168,16 @@ public void configure(ClientOptionsBase options, boolean domainSocket, Bootstrap
       bootstrap.option(EpollChannelOption.TCP_USER_TIMEOUT, options.getTcpUserTimeout());
       bootstrap.option(EpollChannelOption.TCP_QUICKACK, options.isTcpQuickAck());
       bootstrap.option(EpollChannelOption.TCP_CORK, options.isTcpCork());
+
+      if (options.isTcpKeepAlive() && options.getTcpKeepAliveIdleSeconds() != -1) {
+        bootstrap.option(EpollChannelOption.TCP_KEEPIDLE, options.getTcpKeepAliveIdleSeconds());
+      }
+      if (options.isTcpKeepAlive() && options.getTcpKeepAliveCount() != -1) {
+        bootstrap.option(EpollChannelOption.TCP_KEEPCNT, options.getTcpKeepAliveCount());
+      }
+      if (options.isTcpKeepAlive() && options.getTcpKeepAliveIntervalSeconds() != -1) {
+        bootstrap.option(EpollChannelOption.TCP_KEEPINTVL, options.getTcpKeepAliveIntervalSeconds());
+      }
     }
     Transport.super.configure(options, domainSocket, bootstrap);
   }