Github user mike-jumper commented on a diff in the pull request:
https://github.com/apache/incubator-guacamole-client/pull/122#discussion_r127592891
--- Diff:
extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/RadiusConnectionService.java
---
@@ -0,0 +1,352 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.guacamole.auth.radius;
+
+import com.google.inject.Inject;
+import java.io.File;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.security.NoSuchAlgorithmException;
+import org.apache.guacamole.GuacamoleException;
+import org.apache.guacamole.GuacamoleUnsupportedException;
+import org.apache.guacamole.environment.LocalEnvironment;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import net.jradius.client.RadiusClient;
+import net.jradius.exception.RadiusException;
+import net.jradius.packet.RadiusPacket;
+import net.jradius.packet.AccessRequest;
+import net.jradius.dictionary.*;
+import net.jradius.packet.attribute.AttributeList;
+import net.jradius.packet.attribute.RadiusAttribute;
+import net.jradius.client.auth.EAPTLSAuthenticator;
+import net.jradius.client.auth.EAPTTLSAuthenticator;
+import net.jradius.client.auth.RadiusAuthenticator;
+import net.jradius.client.auth.PEAPAuthenticator;
+import net.jradius.packet.attribute.AttributeFactory;
+import net.jradius.packet.AccessChallenge;
+import net.jradius.packet.RadiusResponse;
+
+/**
+ * Service for creating and managing connections to RADIUS servers.
+ */
+public class RadiusConnectionService {
+
+ /**
+ * Logger for this class.
+ */
+ private final Logger logger =
LoggerFactory.getLogger(RadiusConnectionService.class);
+
+ /**
+ * Service for retrieving RADIUS server configuration information.
+ */
+ @Inject
+ private ConfigurationService confService;
+
+
+ /**
+ * The RADIUS client;
+ */
+ private RadiusClient radiusClient;
+
+ /**
+ * Creates a new instance of RadiusClient, configured with parameters
+ * from guacamole.properties.
+ *
+ * @throws GuacamoleException
+ * If an error occurs while parsing guacamole.properties, or if the
+ * configuration of RadiusClient fails.
+ */
+ private void createRadiusConnection() {
--- End diff --
Are the `authenticate()` functions the only usages of this
`createRadiusConnection()` function? If so:
1. It's a little funky to have a function which creates a thing, exposing
said thing through setting a variable at the class level. Why not return the
object?
2. If the `authenticate()` functions invoke this function, which allocates
resources which will not be automatically freed, the requirement that
`disconnect()` must be called to free those resources needs to be documented. A
better approach would be to avoid imposing such a requirement at all, though.
If no other functions need what `createRadiusConnection()` creates, and the
connection created by `createRadiusConnection()` is never reused, it should be
the responsibility of the calling function to clean up after itself.
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