Add websocket server and client, for use later

http-service/src/main/java/net/runelite/http/service/WSService.java

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+/*
+ * Copyright (c) 2017, Adam <Adam@sigterm.info>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service;
+
+import javax.websocket.CloseReason;
+import javax.websocket.EndpointConfig;
+import javax.websocket.OnClose;
+import javax.websocket.OnError;
+import javax.websocket.OnMessage;
+import javax.websocket.OnOpen;
+import javax.websocket.Session;
+import javax.websocket.server.ServerEndpoint;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@ServerEndpoint("/ws")
+public class WSService
+{
+	private static final Logger logger = LoggerFactory.getLogger(WSService.class);
+
+	@OnOpen
+	public void onOpen(Session session, EndpointConfig config)
+	{
+		logger.info("New session {}", session);
+	}
+
+	@OnClose
+	public void onClose(Session session, CloseReason resaon)
+	{
+		logger.info("Close session {}", session);
+	}
+
+	@OnError
+	public void onError(Session session, Throwable ex)
+	{
+		logger.warn("Error in session {}", session, ex);
+	}
+
+	@OnMessage
+	public void onMessage(Session session, String message)
+	{
+		logger.info("Got message: {}", message);
+	}
+}