Set TCP no delay and keepalive options on socket.

app/src/main/java/org/briarproject/snooze/NetworkClient.java

@@ -42,9 +42,11 @@ class NetworkClient extends Thread {
 			while (!isInterrupted()) {
 				Socket s = new Socket();
 				try {
+					s.setTcpNoDelay(true);
+					s.setKeepAlive(true);
+					s.setSoTimeout(SOCKET_TIMEOUT_MS + keepaliveIntervalMs);
 					log.log("Connecting to " + host + ":" + port);
 					s.connect(new InetSocketAddress(host, port), CONNECT_TIMEOUT_MS);
-					s.setSoTimeout(SOCKET_TIMEOUT_MS + keepaliveIntervalMs);
 					log.log("Requesting keepalives every "
 							+ (keepaliveIntervalMs / 1000) + " seconds");
 					DataOutputStream out = new DataOutputStream(s.getOutputStream());

server/src/main/java/org/briarproject/snooze/SnoozeServer.java

@@ -55,6 +55,8 @@ public class SnoozeServer implements Runnable {
 		@Override
 		public void run() {
 			try {
+				socket.setTcpNoDelay(true);
+				socket.setKeepAlive(true);
 				socket.setSoTimeout(SOCKET_TIMEOUT_MS);
 				DataInputStream in = new DataInputStream(socket.getInputStream());
 				OutputStream out = socket.getOutputStream();