diff --git a/src/io/github/norbipeti/chat/server/IOHelper.java b/src/io/github/norbipeti/chat/server/IOHelper.java
index cc97b35..1f2b258 100644
--- a/src/io/github/norbipeti/chat/server/IOHelper.java
+++ b/src/io/github/norbipeti/chat/server/IOHelper.java
@@ -86,8 +86,9 @@ public class IOHelper {
 		return true;
 	}
 
-	public static void LoginUser(HttpExchange exchange, User user) {
-		user.setSessionid(UUID.randomUUID());
+	public static void LoginUser(HttpExchange exchange, User user, DataProvider provider) {
+		provider.SetValues(() -> user.setSessionid(UUID.randomUUID()));
+		System.out.println("Logging in user: " + user);
 		ZonedDateTime expiretime = ZonedDateTime.now(ZoneId.of("GMT")).plus(Period.of(2, 0, 0));
 		exchange.getResponseHeaders().add("Set-Cookie",
 				"user_id=" + user.getId() + "; expires=" + expiretime.format(DateTimeFormatter.RFC_1123_DATE_TIME));
@@ -112,7 +113,7 @@ public class IOHelper {
 			return new HashMap<>();
 		HashMap<String, String> map = new HashMap<>();
 		for (String cheader : exchange.getRequestHeaders().get("Cookie")) {
-			String[] spl = cheader.split("\\;\\S");
+			String[] spl = cheader.split("\\;\\s*");
 			for (String s : spl) {
 				String[] kv = s.split("\\=");
 				if (kv.length < 2)
@@ -123,14 +124,27 @@ public class IOHelper {
 		return map;
 	}
 
+	/**
+	 * Get logged in user. It may also send logout headers if the cookies are
+	 * invalid.
+	 * 
+	 * @param exchange
+	 * @return The logged in user or null if not logged in.
+	 */
 	public static User GetLoggedInUser(HttpExchange exchange) {
 		HashMap<String, String> cookies = GetCookies(exchange);
+		System.out.println("Cookies: " + cookies);
 		if (!cookies.containsKey("user_id") || !cookies.containsKey("session_id"))
 			return null;
+		System.out.println("Cookies found");
 		try (DataProvider provider = new DataProvider()) {
 			User user = provider.getUser(Long.parseLong(cookies.get("user_id")));
+			System.out.println("User: " + user);
+			System.out.println("session_id: " + cookies.get("session_id"));
+			if (user != null)
+				System.out.println("Equals: " + UUID.fromString(cookies.get("session_id")).equals(user.getSessionid()));
 			if (user != null && cookies.get("session_id") != null
-					&& cookies.get("session_id").equals(user.getSessionid()))
+					&& UUID.fromString(cookies.get("session_id")).equals(user.getSessionid()))
 				return user;
 		}
 		return null;
diff --git a/src/io/github/norbipeti/chat/server/db/DataProvider.java b/src/io/github/norbipeti/chat/server/db/DataProvider.java
index 7d7fac0..a8c2c46 100644
--- a/src/io/github/norbipeti/chat/server/db/DataProvider.java
+++ b/src/io/github/norbipeti/chat/server/db/DataProvider.java
@@ -1,6 +1,7 @@
 package io.github.norbipeti.chat.server.db;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;
@@ -58,10 +59,22 @@ public class DataProvider implements AutoCloseable {
 	}
 
 	public User getUser(Long id) {
+		return get(User.class, id);
+	}
+
+	private <T> T get(Class<T> cl, Long id) {
 		EntityManager em = emf.createEntityManager();
-		User managedUser = em.find(User.class, id);
+		T result = em.find(cl, id);
+		em.close();
+		return result;
+	}
+
+	public void SetValues(Runnable action) {
+		EntityManager em = emf.createEntityManager();
+		em.getTransaction().begin();
+		action.run();
+		em.getTransaction().commit();
 		em.close();
-		return managedUser;
 	}
 
 	@Override
diff --git a/src/io/github/norbipeti/chat/server/db/domain/User.java b/src/io/github/norbipeti/chat/server/db/domain/User.java
index 55a4e7e..918fc10 100644
--- a/src/io/github/norbipeti/chat/server/db/domain/User.java
+++ b/src/io/github/norbipeti/chat/server/db/domain/User.java
@@ -45,11 +45,14 @@ public class User {
 
 	@Override
 	public String toString() {
-		List<String> c = new ArrayList<>();
-		for (User u : contacts)
-			c.add(u.name);
+		List<String> c = null;
+		if (contacts != null) {
+			c = new ArrayList<>();
+			for (User u : contacts)
+				c.add(u.name);
+		}
 		return "User [id=" + id + ", name=" + name + ", email=" + email + ", password=" + password + ", contacts=" + c
-				+ "]";
+				+ ", sessionid=" + sessionid + "]"; //TODO: SessionID null after getting from db
 	}
 
 	public void setEmail(String email) {
diff --git a/src/io/github/norbipeti/chat/server/page/LoginPage.java b/src/io/github/norbipeti/chat/server/page/LoginPage.java
index 3094398..6145353 100644
--- a/src/io/github/norbipeti/chat/server/page/LoginPage.java
+++ b/src/io/github/norbipeti/chat/server/page/LoginPage.java
@@ -39,7 +39,7 @@ public class LoginPage extends Page {
 				}, exchange);
 				return;
 			}
-			IOHelper.LoginUser(exchange, loginuser);
+			IOHelper.LoginUser(exchange, loginuser, provider);
 			IOHelper.Redirect("/", exchange);
 		} catch (Exception e) {
 			throw e;
diff --git a/src/io/github/norbipeti/chat/server/page/RegisterPage.java b/src/io/github/norbipeti/chat/server/page/RegisterPage.java
index 9c63425..3284ed2 100644
--- a/src/io/github/norbipeti/chat/server/page/RegisterPage.java
+++ b/src/io/github/norbipeti/chat/server/page/RegisterPage.java
@@ -44,8 +44,10 @@ public class RegisterPage extends Page {
 				user.setSalt(BCrypt.gensalt()); // http://www.mindrot.org/projects/jBCrypt/
 				user.setPassword(BCrypt.hashpw(post.get("pass"), user.getSalt()));
 				provider.addUser(user);
-				IOHelper.LoginUser(exchange, user);
+				IOHelper.LoginUser(exchange, user, provider);
 				IOHelper.Redirect("/", exchange);
+			} catch (Exception e) {
+				throw e;
 			}
 			return;
 		}