http api: add runelite user agent to requests

http-api/src/main/java/net/runelite/http/api/RuneLiteAPI.java

@@ -29,7 +29,10 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.Properties;
 import okhttp3.HttpUrl;
+import okhttp3.Interceptor;
 import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,7 +42,7 @@ public class RuneLiteAPI
 
 	public static final String RUNELITE_AUTH = "RUNELITE-AUTH";
 
-	public static final OkHttpClient CLIENT = new OkHttpClient();
+	public static final OkHttpClient CLIENT;
 	public static final Gson GSON = new Gson();
 
 	private static final String BASE = "https://api.runelite.net";
@@ -67,6 +70,23 @@ public class RuneLiteAPI
 		{
 			logger.error(null, ex);
 		}
+
+		CLIENT = new OkHttpClient.Builder()
+			.addNetworkInterceptor(new Interceptor()
+			{
+				private final String USER_AGENT = "RuneLite/" + version;
+
+				@Override
+				public Response intercept(Chain chain) throws IOException
+				{
+					Request userAgentRequest = chain.request()
+						.newBuilder()
+						.header("User-Agent", USER_AGENT)
+						.build();
+					return chain.proceed(userAgentRequest);
+				}
+			})
+			.build();
 	}
 
 	public static HttpUrl getApiRoot()

http-api/src/test/java/net/runelite/http/api/RuneLiteAPITest.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2018, 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.api;
+
+import java.io.IOException;
+import okhttp3.Request;
+import okhttp3.mockwebserver.MockResponse;
+import okhttp3.mockwebserver.MockWebServer;
+import org.junit.After;
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.Test;
+
+public class RuneLiteAPITest
+{
+	private final MockWebServer server = new MockWebServer();
+
+	@Before
+	public void before() throws IOException
+	{
+		server.enqueue(new MockResponse().setBody("OK"));
+
+		server.start();
+	}
+
+	@After
+	public void after() throws IOException
+	{
+		server.shutdown();
+	}
+
+	@Test
+	public void testUserAgent() throws IOException, InterruptedException
+	{
+		Request request = new Request.Builder()
+			.url(server.url("/").url())
+			.build();
+		RuneLiteAPI.CLIENT.newCall(request).execute().close();
+
+		assertEquals("RuneLite/" + RuneLiteAPI.getVersion(), server.takeRequest().getHeader("User-Agent"));
+	}
+}