Merge branch 'pluggable-network-layer'

settings.gradle

@@ -1,4 +1,5 @@
 include ':vtm'
+include ':vtm-tests'
 include ':vtm-extras'
 include ':vtm-android'
 include ':vtm-android-example'

vtm-extras/src/org/oscim/tiling/source/geojson/GeoJsonTileSource.java

@@ -22,27 +22,29 @@ import java.util.Map;
 import org.oscim.core.MapElement;
 import org.oscim.core.Tag;
 import org.oscim.tiling.ITileDataSource;
-import org.oscim.tiling.source.LwHttp;
 import org.oscim.tiling.source.UrlTileDataSource;
 import org.oscim.tiling.source.UrlTileSource;
 
 public abstract class GeoJsonTileSource extends UrlTileSource {
 
 	public GeoJsonTileSource(String url) {
-		super(url);
-		setExtension(".json");
+		super(url, "/{Z}/{X}/{Y}.json");
+		Map<String, String> opt = new HashMap<String, String>();
+		opt.put("Accept-Encoding", "gzip");
+		setHttpRequestHeaders(opt);
 	}
 
 	public GeoJsonTileSource(String url, int zoomMin, int zoomMax) {
-		super(url, zoomMin, zoomMax);
-		setExtension(".json");
+		super(url, "/{Z}/{X}/{Y}.json", zoomMin, zoomMax);
+		Map<String, String> opt = new HashMap<String, String>();
+		opt.put("Accept-Encoding", "gzip");
+		setHttpRequestHeaders(opt);
 	}
 
 	@Override
 	public ITileDataSource getDataSource() {
-		Map<String, String> opt = new HashMap<String, String>();
-		opt.put("Accept-Encoding", "gzip");
-		return new UrlTileDataSource(this, new GeoJsonTileDecoder(this), new LwHttp(getUrl(), opt));
+
+		return new UrlTileDataSource(this, new GeoJsonTileDecoder(this), getHttpEngine());
 	}
 
 	public Tag getFeatureTag() {

vtm-extras/src/org/oscim/tiling/source/mapnik/MapnikVectorTileSource.java

@@ -18,40 +18,41 @@ package org.oscim.tiling.source.mapnik;
 
 import org.oscim.core.Tile;
 import org.oscim.tiling.ITileDataSource;
-import org.oscim.tiling.source.LwHttp;
 import org.oscim.tiling.source.UrlTileDataSource;
 import org.oscim.tiling.source.UrlTileSource;
 
 public class MapnikVectorTileSource extends UrlTileSource {
 
 	public MapnikVectorTileSource() {
-		super("http://d1s11ojcu7opje.cloudfront.net/dev/764e0b8d");
+		super("http://d1s11ojcu7opje.cloudfront.net/dev/764e0b8d", "");
+		setUrlFormatter(new TileUrlFormatter() {
+			@Override
+			public String formatTilePath(UrlTileSource tileSource, Tile tile) {
+				// url formatter for mapbox streets
+				byte[] hexTable = {
+				        '0', '1', '2', '3',
+				        '4', '5', '6', '7',
+				        '8', '9', 'a', 'b',
+				        'c', 'd', 'e', 'f'
+				};
+				StringBuilder sb = new StringBuilder();
+				sb.append('/');
+				sb.append(hexTable[(tile.tileX) % 16]);
+				sb.append(hexTable[(tile.tileY) % 16]);
+				sb.append('/');
+				sb.append(tile.zoomLevel);
+				sb.append('/');
+				sb.append(tile.tileX);
+				sb.append('/');
+				sb.append(tile.tileY);
+
+				return sb.toString();
+			}
+		});
 	}
 
 	@Override
 	public ITileDataSource getDataSource() {
-		return new UrlTileDataSource(this, new TileDecoder(), new LwHttp(getUrl()));
-	}
-
-	public int formatTilePath(Tile tile, byte[] path, int pos) {
-		// url formatter for mapbox streets
-		byte[] hexTable = {
-		        '0', '1', '2', '3',
-		        '4', '5', '6', '7',
-		        '8', '9', 'a', 'b',
-		        'c', 'd', 'e', 'f'
-		};
-
-		path[pos++] = '/';
-		path[pos++] = hexTable[(tile.tileX) % 16];
-		path[pos++] = hexTable[(tile.tileY) % 16];
-		path[pos++] = '/';
-		pos = LwHttp.writeInt(tile.zoomLevel, pos, path);
-		path[pos++] = '/';
-		pos = LwHttp.writeInt(tile.tileX, pos, path);
-		path[pos++] = '/';
-		pos = LwHttp.writeInt(tile.tileY, pos, path);
-
-		return pos;
+		return new UrlTileDataSource(this, new TileDecoder(), getHttpEngine());
 	}
 }

vtm-extras/src/org/oscim/tiling/source/oscimap/OSciMap1TileSource.java

@@ -17,7 +17,6 @@
 package org.oscim.tiling.source.oscimap;
 
 import org.oscim.tiling.ITileDataSource;
-import org.oscim.tiling.source.LwHttp;
 import org.oscim.tiling.source.UrlTileDataSource;
 import org.oscim.tiling.source.UrlTileSource;
 
@@ -28,13 +27,11 @@ import org.oscim.tiling.source.UrlTileSource;
 public class OSciMap1TileSource extends UrlTileSource {
 
 	public OSciMap1TileSource(String url) {
-		super(url);
-		setExtension(".osmtile");
-		setMimeType("application/osmtile");
+		super(url, "/{Z}/{X}/{Y}.osmtile");
 	}
 
 	@Override
 	public ITileDataSource getDataSource() {
-		return new UrlTileDataSource(this, new TileDecoder(), new LwHttp(getUrl()));
+		return new UrlTileDataSource(this, new TileDecoder(), getHttpEngine());
 	}
 }

vtm-extras/src/org/oscim/tiling/source/oscimap2/OSciMap2TileSource.java

@@ -27,7 +27,6 @@ import org.oscim.core.TagSet;
 import org.oscim.core.Tile;
 import org.oscim.tiling.ITileDataSink;
 import org.oscim.tiling.ITileDataSource;
-import org.oscim.tiling.source.LwHttp;
 import org.oscim.tiling.source.PbfDecoder;
 import org.oscim.tiling.source.UrlTileDataSource;
 import org.oscim.tiling.source.UrlTileSource;
@@ -37,14 +36,12 @@ import org.slf4j.LoggerFactory;
 public class OSciMap2TileSource extends UrlTileSource {
 
 	public OSciMap2TileSource(String url) {
-		super(url);
-		setExtension(".osmtile");
-		setMimeType("application/osmtile");
+		super(url, "/{Z}/{X}/{Y}.osmtile");
 	}
 
 	@Override
 	public ITileDataSource getDataSource() {
-		return new UrlTileDataSource(this, new TileDecoder(), new LwHttp(getUrl()));
+		return new UrlTileDataSource(this, new TileDecoder(), getHttpEngine());
 	}
 
 	static class TileDecoder extends PbfDecoder {

vtm-tests/build.gradle

@@ -0,0 +1,16 @@
+apply plugin: 'java'
+apply plugin: 'maven'
+
+dependencies {
+  compile project(':vtm')
+  compile 'com.squareup.okhttp:okhttp:1.5.2'
+  testCompile 'junit:junit:4.11'
+  testCompile 'org.mockito:mockito-all:1.9.5'
+  testCompile 'org.easytesting:fest-assert-core:2.0M10'
+  testCompile 'com.squareup.okhttp:mockwebserver:1.5.2'
+}
+
+sourceSets {
+  main.java.srcDirs = ['src']
+  test.java.srcDirs = ['test']
+}

vtm-tests/test/org/oscim/tiling/source/OkHttpEngineTest.java

@@ -0,0 +1,93 @@
+package org.oscim.tiling.source;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.oscim.core.Tile;
+import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
+
+import com.squareup.okhttp.mockwebserver.MockResponse;
+import com.squareup.okhttp.mockwebserver.MockWebServer;
+import com.squareup.okhttp.mockwebserver.RecordedRequest;
+
+public class OkHttpEngineTest {
+	private OkHttpEngine engine;
+	private MockWebServer server;
+	private MockResponse mockResponse;
+
+	@Before
+	public void setUp() throws Exception {
+		mockResponse = new MockResponse();
+		mockResponse.setBody("TEST RESPONSE".getBytes());
+		server = new MockWebServer();
+		server.enqueue(mockResponse);
+		server.play();
+		engine = (OkHttpEngine) new OkHttpEngine.OkHttpFactory()
+		    .create(new OSciMap4TileSource(server.getUrl("/tiles/vtm").toString()));
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		server.shutdown();
+	}
+
+	@Test
+	public void shouldNotBeNull() throws Exception {
+		assertThat(engine).isNotNull();
+	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void sendRequest_shouldRejectNullTile() throws Exception {
+		engine.sendRequest(null);
+	}
+
+	@Test
+	public void sendRequest_shouldAppendXYZToPath() throws Exception {
+		engine.sendRequest(new Tile(1, 2, new Integer(3).byteValue()));
+
+		RecordedRequest request = server.takeRequest();
+		assertThat(request.getPath()).isEqualTo("/tiles/vtm/3/1/2.vtm");
+	}
+
+	@Test
+	public void read_shouldReturnResponseStream() throws Exception {
+		engine.sendRequest(new Tile(1, 2, new Integer(3).byteValue()));
+
+		InputStream responseStream = engine.read();
+		String response = new BufferedReader(new InputStreamReader(responseStream)).readLine();
+		assertThat(response).isEqualTo("TEST RESPONSE");
+	}
+
+	@Test(expected = IOException.class)
+	public void close_shouldCloseInputStream() throws Exception {
+		engine.sendRequest(new Tile(1, 2, new Integer(3).byteValue()));
+		engine.close();
+
+		// Calling read after the stream is closed should throw an exception.
+		InputStream responseStream = engine.read();
+		responseStream.read();
+	}
+
+	@Test(expected = IOException.class)
+	public void requestCompleted_shouldCloseInputStream() throws Exception {
+		engine.sendRequest(new Tile(1, 2, new Integer(3).byteValue()));
+		engine.requestCompleted(true);
+
+		// Calling read after the stream is closed should throw an exception.
+		InputStream responseStream = engine.read();
+		responseStream.read();
+	}
+
+	@Test
+	public void requestCompleted_shouldReturnValueGiven() throws Exception {
+		assertThat(engine.requestCompleted(true)).isTrue();
+		assertThat(engine.requestCompleted(false)).isFalse();
+	}
+}

vtm-tests/test/org/oscim/tiling/source/UrlTileSourceTest.java

@@ -0,0 +1,56 @@
+package org.oscim.tiling.source;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.oscim.tiling.ITileDataSource;
+
+public class UrlTileSourceTest {
+	private UrlTileSource tileSource;
+
+	@Before
+	public void setUp() throws Exception {
+		tileSource = new TestTileSource("http://example.org/tiles/vtm", "/{Z}/{X}/{Z}.vtm");
+	}
+
+	@Test
+	public void shouldNotBeNull() throws Exception {
+		assertThat(tileSource).isNotNull();
+	}
+
+	@Test
+	public void shouldUseDefaultHttpEngine() throws Exception {
+		TestTileDataSource dataSource = (TestTileDataSource) tileSource.getDataSource();
+		assertThat(dataSource.getConnection()).isInstanceOf(LwHttp.class);
+	}
+
+	@Test
+	public void shouldUseCustomHttpEngine() throws Exception {
+		tileSource.setHttpEngine(new OkHttpEngine.OkHttpFactory());
+		TestTileDataSource dataSource = (TestTileDataSource) tileSource.getDataSource();
+		assertThat(dataSource.getConnection()).isInstanceOf(OkHttpEngine.class);
+	}
+
+	class TestTileSource extends UrlTileSource {
+		public TestTileSource(String urlString, String tilePath) {
+			super(urlString, tilePath);
+		}
+
+		@Override
+		public ITileDataSource getDataSource() {
+			return new TestTileDataSource(this, null, getHttpEngine());
+		}
+	}
+
+	class TestTileDataSource extends UrlTileDataSource {
+		public TestTileDataSource(UrlTileSource tileSource, ITileDecoder tileDecoder,
+		        HttpEngine conn) {
+			super(tileSource, tileDecoder, conn);
+		}
+
+		public HttpEngine getConnection() {
+			return mConn;
+		}
+	}
+}

vtm-tests/test/org/oscim/tiling/source/bitmap/BitmapTileSourceTest.java

@@ -0,0 +1,62 @@
+package org.oscim.tiling.source.bitmap;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.oscim.tiling.ITileDataSource;
+import org.oscim.tiling.source.HttpEngine;
+import org.oscim.tiling.source.LwHttp;
+import org.oscim.tiling.source.OkHttpEngine;
+import org.oscim.tiling.source.UrlTileDataSource;
+import org.oscim.tiling.source.UrlTileSource;
+
+public class BitmapTileSourceTest {
+	private BitmapTileSource tileSource;
+
+	@Before
+	public void setUp() throws Exception {
+		tileSource = new BitmapTileSource("http://tile.openstreetmap.org", 0, 18);
+	}
+
+	@Test
+	public void shouldNotBeNull() throws Exception {
+		assertThat(tileSource).isNotNull();
+	}
+
+	@Test
+	public void shouldUseLwHttp() throws Exception {
+		LwHttp lwHttp = Mockito.mock(LwHttp.class);
+		tileSource.setHttpEngine(new TestHttpFactory(lwHttp));
+		ITileDataSource dataSource = tileSource.getDataSource();
+		dataSource.destroy();
+		Mockito.verify(lwHttp).close();
+	}
+
+	@Test
+	public void shouldUseOkHttp() throws Exception {
+		OkHttpEngine okHttp = Mockito.mock(OkHttpEngine.class);
+		tileSource.setHttpEngine(new TestHttpFactory(okHttp));
+		UrlTileDataSource dataSource = (UrlTileDataSource) tileSource.getDataSource();
+		dataSource.destroy();
+		Mockito.verify(okHttp).close();
+	}
+
+	/**
+	 * Test factory that allows the specific {@link HttpEngine} instance to be
+	 * set.
+	 */
+	class TestHttpFactory implements HttpEngine.Factory {
+		final HttpEngine engine;
+
+		public TestHttpFactory(HttpEngine engine) {
+			this.engine = engine;
+		}
+
+		@Override
+		public HttpEngine create(UrlTileSource tileSource) {
+			return engine;
+		}
+	}
+}

vtm-tests/test/org/oscim/tiling/source/oscimap4/OSciMap4TileSourceTest.java

@@ -0,0 +1,61 @@
+package org.oscim.tiling.source.oscimap4;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.oscim.tiling.ITileDataSource;
+import org.oscim.tiling.source.HttpEngine;
+import org.oscim.tiling.source.LwHttp;
+import org.oscim.tiling.source.OkHttpEngine;
+import org.oscim.tiling.source.UrlTileSource;
+
+public class OSciMap4TileSourceTest {
+	private OSciMap4TileSource tileSource;
+
+	@Before
+	public void setUp() throws Exception {
+		tileSource = new OSciMap4TileSource("http://www.example.org/tiles/vtm");
+	}
+
+	@Test
+	public void shouldNotBeNull() throws Exception {
+		assertThat(tileSource).isNotNull();
+	}
+
+	@Test
+	public void shouldUseLwHttp() throws Exception {
+		LwHttp lwHttp = Mockito.mock(LwHttp.class);
+		tileSource.setHttpEngine(new TestHttpFactory(lwHttp));
+		ITileDataSource dataSource = tileSource.getDataSource();
+		dataSource.destroy();
+		Mockito.verify(lwHttp).close();
+	}
+
+	@Test
+	public void shouldUseOkHttp() throws Exception {
+		OkHttpEngine okHttp = Mockito.mock(OkHttpEngine.class);
+		tileSource.setHttpEngine(new TestHttpFactory(okHttp));
+		ITileDataSource dataSource = tileSource.getDataSource();
+		dataSource.destroy();
+		Mockito.verify(okHttp).close();
+	}
+
+	/**
+	 * Test factory that allows the specific {@link HttpEngine} instance to be
+	 * set.
+	 */
+	class TestHttpFactory implements HttpEngine.Factory {
+		final HttpEngine engine;
+
+		public TestHttpFactory(HttpEngine engine) {
+			this.engine = engine;
+		}
+
+		@Override
+		public HttpEngine create(UrlTileSource tileSource) {
+			return engine;
+		}
+	}
+}

vtm-web/src/org/oscim/gdx/emu/org/oscim/tiling/source/LwHttp.java

@@ -16,9 +16,10 @@ package org.oscim.tiling.source;
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.net.URL;
+import java.io.OutputStream;
 
 import org.oscim.core.Tile;
+import org.oscim.layers.tile.MapTile;
 
 import com.google.gwt.typedarrays.client.Uint8ArrayNative;
 import com.google.gwt.typedarrays.shared.Uint8Array;
@@ -26,20 +27,15 @@ import com.google.gwt.xhr.client.ReadyStateChangeHandler;
 import com.google.gwt.xhr.client.XMLHttpRequest;
 import com.google.gwt.xhr.client.XMLHttpRequest.ResponseType;
 
-public class LwHttp {
+public class LwHttp implements HttpEngine {
 	//static final Logger log = LoggerFactory.getLogger(LwHttp.class);
 
-	private final String mUrlPath;
-	private final byte[] mRequestBuffer;
-
-	private int mContentLength = -1;
 	private XMLHttpRequest mHttpRequest;
 
 	private ReadyStateChangeHandler mResponseHandler;
 
-	public LwHttp(URL url) {
-		mUrlPath = url.toString();
-		mRequestBuffer = new byte[1024];
+	public LwHttp(UrlTileSource tileSource) {
+		mTileSource = tileSource;
 	}
 
 	static class Buffer extends InputStream {
@@ -63,21 +59,18 @@ public class LwHttp {
 	}
 
 	public void close() {
-		if (mHttpRequest != null)
-			mHttpRequest.abort();
+		if (mHttpRequest == null)
+			return;
+
+		mHttpRequest.abort();
+		mHttpRequest = null;
 	}
 
-	private UrlTileDataSource mDataSource;
+	private UrlTileSource mTileSource;
 
-	public boolean sendRequest(Tile tile, UrlTileDataSource dataSource) throws IOException {
-		mDataSource = dataSource;
+	public void sendRequest(MapTile tile, final UrlTileDataSource dataSource) {
 
-		byte[] request = mRequestBuffer;
-		int pos = 0;
-
-		pos = dataSource.getTileSource().formatTilePath(tile, request, pos);
-
-		String url = mUrlPath + (new String(request, 0, pos));
+		String url = mTileSource.getTileUrl(tile);
 
 		mHttpRequest = XMLHttpRequest.create();
 		mHttpRequest.open("GET", url);
@@ -91,63 +84,46 @@ public class LwHttp {
 				//log.debug(mCurrentUrl + "response " + status + "/" + state);
 
 				if (state == XMLHttpRequest.DONE) {
-
-					int status = xhr.getStatus();
-
-					if (status == 200) {
+					if (xhr.getStatus() == 200) {
 						Uint8Array buf = Uint8ArrayNative.create(xhr.getResponseArrayBuffer());
-
-						mDataSource.process(new Buffer(buf));
+						dataSource.process(new Buffer(buf));
 					} else {
-						mDataSource.process(null);
+						dataSource.process(null);
 					}
+					mHttpRequest = null;
 				}
 			}
 		};
 
 		mHttpRequest.setOnReadyStateChange(mResponseHandler);
 		mHttpRequest.send();
+	}
 
+	public static class LwHttpFactory implements HttpEngine.Factory {
+
+		@Override
+		public HttpEngine create(UrlTileSource tileSource) {
+			return new LwHttp(tileSource);
+		}
+	}
+
+	@Override
+	public InputStream read() throws IOException {
+		return null;
+	}
+
+	@Override
+	public void setCache(OutputStream os) {
+	}
+
+	@Override
+	public boolean requestCompleted(boolean success) {
+		//	mHttpRequest.clearOnReadyStateChange();
+		//	mHttpRequest = null;
 		return true;
 	}
 
-	// write (positive) integer to byte array
-	protected static int writeInt(int val, int pos, byte[] buf) {
-		if (val == 0) {
-			buf[pos] = '0';
-			return pos + 1;
-		}
-
-		int i = 0;
-		for (int n = val; n > 0; n = n / 10, i++)
-			buf[pos + i] = (byte) ('0' + n % 10);
-
-		// reverse bytes
-		for (int j = pos, end = pos + i - 1, mid = pos + i / 2; j < mid; j++, end--) {
-			byte tmp = buf[j];
-			buf[j] = buf[end];
-			buf[end] = tmp;
-		}
-
-		return pos + i;
-	}
-
-	// parse (positive) integer from byte array
-	protected static int parseInt(byte[] buf, int pos, int end) {
-		int val = 0;
-		for (; pos < end; pos++)
-			val = val * 10 + (buf[pos]) - '0';
-
-		return val;
-	}
-
-	public void requestCompleted() {
-
-		mHttpRequest.clearOnReadyStateChange();
-		mHttpRequest = null;
-	}
-
-	public int getContentLength() {
-		return mContentLength;
+	@Override
+	public void sendRequest(Tile tile) throws IOException {
 	}
 }

vtm-web/src/org/oscim/gdx/emu/org/oscim/tiling/source/UrlTileDataSource.java

@@ -35,65 +35,52 @@ public class UrlTileDataSource implements ITileDataSource {
 	protected final ITileDecoder mTileDecoder;
 	protected final UrlTileSource mTileSource;
 
-	public UrlTileDataSource(UrlTileSource tileSource, ITileDecoder tileDecoder, LwHttp conn) {
-		mTileSource = tileSource;
-		mTileDecoder = tileDecoder;
-		mConn = conn;
-	}
-
-	UrlTileSource getTileSource() {
-		return mTileSource;
-	}
-
 	private ITileDataSink mSink;
 	private MapTile mTile;
 
+	public UrlTileDataSource(UrlTileSource tileSource, ITileDecoder tileDecoder, HttpEngine conn) {
+		mTileSource = tileSource;
+		mTileDecoder = tileDecoder;
+		mConn = (LwHttp) conn;
+	}
+
 	@Override
 	public void query(MapTile tile, ITileDataSink sink) {
 		mTile = tile;
 		mSink = sink;
-		try {
-			mConn.sendRequest(tile, this);
-		} catch (Exception e) {
-			///e.printStackTrace();
-			log.error("{} {}", mTile, e.getMessage());
-			sink.completed(FAILED);
-		}
+		mConn.sendRequest(tile, this);
 	}
 
 	public void process(final InputStream is) {
-		TileLoader.postLoadDelay(new LoadDelayTask<InputStream>(mTile, mSink, is) {
+		if (is == null) {
+			log.debug("{} no inputstream", mTile);
+			mSink.completed(FAILED);
+			mTile = null;
+			mSink = null;
+			return;
+		}
 
+		TileLoader.postLoadDelay(new LoadDelayTask<InputStream>(mTile, mSink, is) {
 			@Override
 			public void continueLoading() {
-
+				boolean win = false;
 				if (tile.state(MapTile.State.LOADING)) {
-					boolean win = false;
-					if (is != null) {
-						try {
-							win = mTileDecoder.decode(tile, sink, data);
-						} catch (IOException e) {
-							e.printStackTrace();
-						}
+					try {
+						win = mTileDecoder.decode(tile, sink, data);
+					} catch (IOException e) {
+						e.printStackTrace();
 					}
-					if (!win)
-						log.debug("{} failed", tile);
-
-					// FIXME
-					mConn.requestCompleted();
-
-					sink.completed(win ? SUCCESS : FAILED);
-				} else {
-					// FIXME
-					mConn.requestCompleted();
-					sink.completed(FAILED);
 				}
-
-				mTile = null;
-				mSink = null;
+				if (win) {
+					sink.completed(SUCCESS);
+				} else {
+					sink.completed(FAILED);
+					log.debug("{} decode failed", tile);
+				}
 			}
 		});
-
+		mTile = null;
+		mSink = null;
 	}
 
 	@Override

vtm-web/src/org/oscim/gdx/emu/org/oscim/tiling/source/bitmap/BitmapTileSource.java

@@ -31,9 +31,17 @@ public class BitmapTileSource extends UrlTileSource {
 	 * Use e.g. setExtension(".jpg") to overide ending or
 	 * implement getUrlString() for custom formatting.
 	 */
+
 	public BitmapTileSource(String url, int zoomMin, int zoomMax) {
-		super(url, zoomMin, zoomMax);
-		setExtension(".png");
+		super(url, "/{Z}/{X}/{Y}.png", zoomMin, zoomMax);
+	}
+
+	public BitmapTileSource(String url, int zoomMin, int zoomMax, String extension) {
+		super(url, "/{Z}/{X}/{Y}" + extension, zoomMin, zoomMax);
+	}
+
+	public BitmapTileSource(String url, String tilePath, int zoomMin, int zoomMax) {
+		super(url, tilePath, zoomMin, zoomMax);
 	}
 
 	@Override
@@ -41,10 +49,9 @@ public class BitmapTileSource extends UrlTileSource {
 		return new BitmapTileDataSource(this);
 	}
 
-	public static class BitmapTileDataSource implements ITileDataSource {
+	public class BitmapTileDataSource implements ITileDataSource {
 
 		protected final UrlTileSource mTileSource;
-		private final byte[] mRequestBuffer = new byte[1024];
 
 		public BitmapTileDataSource(BitmapTileSource bitmapTileSource) {
 			mTileSource = bitmapTileSource;
@@ -53,10 +60,7 @@ public class BitmapTileSource extends UrlTileSource {
 		@Override
 		public void query(final MapTile tile, final ITileDataSink sink) {
 
-			int pos = mTileSource.formatTilePath(tile, mRequestBuffer, 0);
-
-			String url = mTileSource.getUrl()
-			        + (new String(mRequestBuffer, 0, pos));
+			String url = mTileSource.getTileUrl(tile);
 
 			SafeUri uri = UriUtils.fromTrustedString(url);
 

vtm-web/src/org/oscim/gdx/emu/org/oscim/tiling/source/geojson/GeoJsonTileSource.java

@@ -30,8 +30,7 @@ public abstract class GeoJsonTileSource extends UrlTileSource {
 	static final Logger log = LoggerFactory.getLogger(GeoJsonTileSource.class);
 
 	public GeoJsonTileSource(String url) {
-		super(url);
-		setExtension(".json");
+		super(url, "/{Z}/{X}/{Y}.json");
 	}
 
 	@Override

vtm-web/src/org/oscim/tiling/source/JsonTileDataSource.java

@@ -41,8 +41,6 @@ public class JsonTileDataSource implements ITileDataSource {
 	protected final GeoJsonTileDecoder mTileDecoder;
 	protected final UrlTileSource mTileSource;
 
-	private final byte[] mRequestBuffer = new byte[1024];
-
 	public JsonTileDataSource(GeoJsonTileSource tileSource) {
 		mTileSource = tileSource;
 		mTileDecoder = new GeoJsonTileDecoder(tileSource);
@@ -61,12 +59,7 @@ public class JsonTileDataSource implements ITileDataSource {
 		mSink = sink;
 
 		try {
-			int pos = mTileSource.formatTilePath(tile, mRequestBuffer, 0);
-
-			String url = mTileSource.getUrl()
-			        + (new String(mRequestBuffer, 0, pos));
-
-			doGet(url);
+			doGet(mTileSource.getTileUrl(tile));
 		} catch (Exception e) {
 			e.printStackTrace();
 			sink.completed(FAILED);

vtm/build.gradle

@@ -5,6 +5,7 @@ configurations { providedCompile }
 
 dependencies {
   compile 'org.slf4j:slf4j-api:1.7.6'
+  providedCompile 'com.squareup.okhttp:okhttp:1.5.2'
   providedCompile 'com.google.code.findbugs:annotations:2.0.1'
 }
 

vtm/src/org/oscim/tiling/source/HttpEngine.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2014 Hannes Janetzek
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.tiling.source;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.oscim.core.Tile;
+
+public interface HttpEngine {
+
+	InputStream read() throws IOException;
+
+	void sendRequest(Tile tile) throws IOException;
+
+	void close();
+
+	void setCache(OutputStream os);
+
+	boolean requestCompleted(boolean success);
+
+	public interface Factory {
+		HttpEngine create(UrlTileSource tileSource);
+	}
+
+}

vtm/src/org/oscim/tiling/source/ITileDecoder.java

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2013 Hannes Janetzek
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.oscim.tiling.source;
 
 import java.io.IOException;

vtm/src/org/oscim/tiling/source/LwHttp.java

@@ -24,7 +24,6 @@ import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.net.SocketAddress;
 import java.net.URL;
-import java.util.Map;
 import java.util.Map.Entry;
 
 import org.oscim.core.Tile;
@@ -35,17 +34,13 @@ import org.slf4j.LoggerFactory;
 
 /**
  * Lightweight HTTP connection for tile loading. Does not do redirects,
- * https, full header parsing or stuff.
- * 
- * TODO extract API interface to be used by UrlTileSource so that one
- * could also use HttpUrlConnection, etc.
+ * https, full header parsing or other stuff.
  */
-public class LwHttp {
+public class LwHttp implements HttpEngine {
 	static final Logger log = LoggerFactory.getLogger(LwHttp.class);
 	static final boolean dbg = false;
 
 	private final static byte[] HEADER_HTTP_OK = "200 OK".getBytes();
-	//private final static byte[] HEADER_CONTENT_TYPE = "Content-Type".getBytes();
 	private final static byte[] HEADER_CONTENT_LENGTH = "Content-Length".getBytes();
 	private final static byte[] HEADER_CONNECTION_CLOSE = "Connection: close".getBytes();
 
@@ -58,7 +53,7 @@ public class LwHttp {
 	private final String mHost;
 	private final int mPort;
 
-	private int mMaxReq = 0;
+	private int mMaxRequests = 0;
 	private Socket mSocket;
 	private OutputStream mCommandStream;
 	private Buffer mResponseStream;
@@ -72,39 +67,33 @@ public class LwHttp {
 	private final byte[] REQUEST_GET_END;
 	private final byte[] mRequestBuffer;
 
-	/**
-	 * @param url
-	 *            Base url for tiles
-	 */
-	public LwHttp(URL url) {
-		this(url, null);
-	}
+	private final byte[][] mTilePath;
+	private final UrlTileSource mTileSource;
 
-	public LwHttp(URL url, Map<String, String> header) {
+	private LwHttp(UrlTileSource tileSource, byte[][] tilePath) {
+		mTilePath = tilePath;
+		mTileSource = tileSource;
 
+		URL url = tileSource.getUrl();
 		int port = url.getPort();
 		if (port < 0)
 			port = 80;
 
 		String host = url.getHost();
 		String path = url.getPath();
-		log.debug("open database: " + host + " " + port + " " + path);
+		//log.debug("open database: {} {} {}", host, port, path);
 
 		REQUEST_GET_START = ("GET " + path).getBytes();
 
-		String addRequest = "";
-		if (header != null) {
-			StringBuffer sb = new StringBuffer();
-			for (Entry<String, String> l : header.entrySet())
-				sb.append('\n').append(l.getKey()).append(": ").append(l.getValue());
-			addRequest = sb.toString();
-		}
+		StringBuilder opt = new StringBuilder();
+		for (Entry<String, String> l : tileSource.getRequestHeader().entrySet())
+			opt.append('\n').append(l.getKey()).append(": ").append(l.getValue());
 
 		REQUEST_GET_END = (" HTTP/1.1" +
 		        "\nUser-Agent: vtm/0.5.9" +
 		        "\nHost: " + host +
 		        "\nConnection: Keep-Alive" +
-		        addRequest +
+		        opt.toString() +
 		        "\n\n").getBytes();
 
 		mHost = host;
@@ -115,10 +104,7 @@ public class LwHttp {
 		                 mRequestBuffer, 0, REQUEST_GET_START.length);
 	}
 
-	// TODO:
-	// to avoid a copy in PbfDecoder one could manage the buffer
-	// array directly and provide access to it.
-	static class Buffer extends BufferedInputStream {
+	static final class Buffer extends BufferedInputStream {
 		OutputStream cache;
 		int bytesRead = 0;
 		int bytesWrote;
@@ -198,6 +184,7 @@ public class LwHttp {
 
 			if (marked >= 0)
 				bytesRead = marked;
+
 			/* TODO could check if the mark is already invalid */
 			super.reset();
 		}
@@ -212,9 +199,6 @@ public class LwHttp {
 			if (data >= 0)
 				bytesRead += 1;
 
-			//if (dbg)
-			//	log.debug("read {} {}", bytesRead, contentLength);
-
 			if (cache != null && bytesRead > bytesWrote) {
 				bytesWrote = bytesRead;
 				cache.write(data);
@@ -289,27 +273,21 @@ public class LwHttp {
 				break;
 			}
 
-			if (!ok) {
-				/* ignore until end of header */
-			} else if (first) {
-				first = false;
-				/* check only for OK ("HTTP/1.? ".length == 9) */
-				if (!check(HEADER_HTTP_OK, buf, pos + 9, end))
-					ok = false;
+			if (ok) {
+				if (first) {
+					first = false;
+					/* check only for OK ("HTTP/1.? ".length == 9) */
+					if (!check(HEADER_HTTP_OK, buf, pos + 9, end))
+						ok = false;
 
-			} else if (check(HEADER_CONTENT_LENGTH, buf, pos, end)) {
-				/* parse Content-Length */
-				contentLength = parseInt(buf, pos +
-				        HEADER_CONTENT_LENGTH.length + 2, end - 1);
-			} else if (check(HEADER_CONNECTION_CLOSE, buf, pos, end)) {
-				mMustClose = true;
+				} else if (check(HEADER_CONTENT_LENGTH, buf, pos, end)) {
+					/* parse Content-Length */
+					contentLength = parseInt(buf, pos +
+					        HEADER_CONTENT_LENGTH.length + 2, end - 1);
+				} else if (check(HEADER_CONNECTION_CLOSE, buf, pos, end)) {
+					mMustClose = true;
+				}
 			}
-			//} else if (check(HEADER_CONTENT_TYPE, buf, pos, end)) {
-			// check that response contains the expected
-			// Content-Type
-			//if (!check(mContentType, buf, pos +
-			//        HEADER_CONTENT_TYPE.length + 2, end))
-			//	ok = false;
 
 			if (!ok || dbg) {
 				String line = new String(buf, pos, end - pos - 1);
@@ -332,17 +310,20 @@ public class LwHttp {
 		return is;
 	}
 
-	public boolean sendRequest(UrlTileSource tileSource, Tile tile) throws IOException {
+	@Override
+	public void sendRequest(Tile tile) throws IOException {
 
 		if (mSocket != null) {
-			if (mMaxReq-- <= 0)
+			if (--mMaxRequests < 0)
 				close();
 			else if (System.nanoTime() - mLastRequest > RESPONSE_TIMEOUT)
 				close();
 			else {
 				try {
-					if (mResponseStream.available() > 0)
+					if (mResponseStream.available() > 0) {
+						log.debug("still bytes available");
 						close();
+					}
 				} catch (IOException e) {
 					log.debug(e.getMessage());
 					close();
@@ -355,36 +336,32 @@ public class LwHttp {
 			lwHttpConnect();
 
 			/* TODO parse from header */
-			mMaxReq = RESPONSE_EXPECTED_LIVES;
+			mMaxRequests = RESPONSE_EXPECTED_LIVES;
 		}
 
-		byte[] request = mRequestBuffer;
 		int pos = REQUEST_GET_START.length;
-
-		pos = tileSource.formatTilePath(tile, request, pos);
-
 		int len = REQUEST_GET_END.length;
-		System.arraycopy(REQUEST_GET_END, 0, request, pos, len);
+
+		pos = formatTilePath(tile, mRequestBuffer, pos);
+		System.arraycopy(REQUEST_GET_END, 0, mRequestBuffer, pos, len);
 		len += pos;
 
 		if (dbg)
-			log.debug("request: {}", new String(request, 0, len));
+			log.debug("request: {}", new String(mRequestBuffer, 0, len));
 
 		try {
-			mCommandStream.write(request, 0, len);
-			mCommandStream.flush();
-			return true;
+			writeRequest(mRequestBuffer, len);
 		} catch (IOException e) {
 			log.debug("recreate connection");
 			close();
-			/* might throw IOException */
 			lwHttpConnect();
-
-			mCommandStream.write(request, 0, len);
-			mCommandStream.flush();
+			writeRequest(mRequestBuffer, len);
 		}
+	}
 
-		return true;
+	private void writeRequest(byte[] request, int length) throws IOException {
+		mCommandStream.write(request, 0, length);
+		mCommandStream.flush();
 	}
 
 	private boolean lwHttpConnect() throws IOException {
@@ -405,6 +382,7 @@ public class LwHttp {
 		return true;
 	}
 
+	@Override
 	public void close() {
 		if (mSocket == null)
 			return;
@@ -415,6 +393,7 @@ public class LwHttp {
 		mResponseStream = null;
 	}
 
+	@Override
 	public void setCache(OutputStream os) {
 		if (mResponseStream == null)
 			return;
@@ -422,6 +401,7 @@ public class LwHttp {
 		mResponseStream.setCache(os);
 	}
 
+	@Override
 	public boolean requestCompleted(boolean success) {
 		if (mResponseStream == null)
 			return false;
@@ -430,15 +410,6 @@ public class LwHttp {
 		mResponseStream.setCache(null);
 
 		if (!mResponseStream.finishedReading()) {
-			//	StringBuffer sb = new StringBuffer();
-			//	try {
-			//		int val;
-			//		while ((val = mResponseStream.read()) >= 0)
-			//			sb.append((char) val);
-			//	} catch (IOException e) {
-			//
-			//	}
-			//log.debug("invalid buffer position {}", sb.toString());
 			log.debug("invalid buffer position");
 			close();
 			return true;
@@ -458,7 +429,7 @@ public class LwHttp {
 	}
 
 	/** write (positive) integer to byte array */
-	public static int writeInt(int val, int pos, byte[] buf) {
+	private static int writeInt(int val, int pos, byte[] buf) {
 		if (val == 0) {
 			buf[pos] = '0';
 			return pos + 1;
@@ -474,7 +445,7 @@ public class LwHttp {
 	}
 
 	/** parse (positive) integer from byte array */
-	protected static int parseInt(byte[] buf, int pos, int end) {
+	private static int parseInt(byte[] buf, int pos, int end) {
 		int val = 0;
 		for (; pos < end; pos++)
 			val = val * 10 + (buf[pos]) - '0';
@@ -496,4 +467,61 @@ public class LwHttp {
 
 		return true;
 	}
+
+	/**
+	 * @param tile the Tile
+	 * @param buf to write url string
+	 * @param pos current position
+	 * @return new position
+	 */
+	private int formatTilePath(Tile tile, byte[] buf, int pos) {
+		if (mTilePath == null) {
+			String url = mTileSource.getUrlFormatter()
+			    .formatTilePath(mTileSource, tile);
+			byte[] b = url.getBytes();
+			System.arraycopy(b, 0, buf, pos, b.length);
+			return pos + b.length;
+		}
+
+		for (byte[] b : mTilePath) {
+			if (b.length == 1) {
+				if (b[0] == '/') {
+					buf[pos++] = '/';
+					continue;
+				} else if (b[0] == 'X') {
+					pos = writeInt(tile.tileX, pos, buf);
+					continue;
+				} else if (b[0] == 'Y') {
+					pos = writeInt(tile.tileY, pos, buf);
+					continue;
+				} else if (b[0] == 'Z') {
+					pos = writeInt(tile.zoomLevel, pos, buf);
+					continue;
+				}
+			}
+			System.arraycopy(b, 0, buf, pos, b.length);
+			pos += b.length;
+		}
+		return pos;
+
+	}
+
+	public static class LwHttpFactory implements HttpEngine.Factory {
+		private byte[][] mTilePath;
+
+		@Override
+		public HttpEngine create(UrlTileSource tileSource) {
+			if (tileSource.getUrlFormatter() != UrlTileSource.URL_FORMATTER)
+				return new LwHttp(tileSource, null);
+
+			/* use optimized formatter replacing the default */
+			if (mTilePath == null) {
+				String[] path = tileSource.getTilePath();
+				mTilePath = new byte[path.length][];
+				for (int i = 0; i < path.length; i++)
+					mTilePath[i] = path[i].getBytes();
+			}
+			return new LwHttp(tileSource, mTilePath);
+		}
+	}
 }

vtm/src/org/oscim/tiling/source/OkHttpEngine.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2014 Charles Greb
+ * Copyright 2014 Hannes Janetzek
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.tiling.source;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.Map.Entry;
+
+import org.oscim.core.Tile;
+import org.oscim.utils.IOUtils;
+
+import com.squareup.okhttp.OkHttpClient;
+
+public class OkHttpEngine implements HttpEngine {
+	private final OkHttpClient mClient;
+	private final UrlTileSource mTileSource;
+
+	public static class OkHttpFactory implements HttpEngine.Factory {
+		private final OkHttpClient mClient;
+
+		public OkHttpFactory() {
+			mClient = new OkHttpClient();
+		}
+
+		@Override
+		public HttpEngine create(UrlTileSource tileSource) {
+			return new OkHttpEngine(mClient, tileSource);
+		}
+	}
+
+	private InputStream inputStream;
+
+	public OkHttpEngine(OkHttpClient client, UrlTileSource tileSource) {
+		mClient = client;
+		mTileSource = tileSource;
+	}
+
+	@Override
+	public InputStream read() throws IOException {
+		return inputStream;
+	}
+
+	@Override
+	public void sendRequest(Tile tile) throws IOException {
+		if (tile == null) {
+			throw new IllegalArgumentException("Tile cannot be null.");
+		}
+		URL url = new URL(mTileSource.getTileUrl(tile));
+		HttpURLConnection conn = mClient.open(url);
+
+		for (Entry<String, String> opt : mTileSource.getRequestHeader().entrySet())
+			conn.addRequestProperty(opt.getKey(), opt.getValue());
+
+		inputStream = conn.getInputStream();
+	}
+
+	@Override
+	public void close() {
+		IOUtils.closeQuietly(inputStream);
+	}
+
+	@Override
+	public void setCache(OutputStream os) {
+		// TODO: Evaluate OkHttp response cache and determine if additional caching is required.
+	}
+
+	@Override
+	public boolean requestCompleted(boolean success) {
+		close();
+		return success;
+	}
+}

vtm/src/org/oscim/tiling/source/UrlTileDataSource.java

@@ -38,12 +38,12 @@ import org.slf4j.LoggerFactory;
 public class UrlTileDataSource implements ITileDataSource {
 	static final Logger log = LoggerFactory.getLogger(UrlTileDataSource.class);
 
-	protected final LwHttp mConn;
+	protected final HttpEngine mConn;
 	protected final ITileDecoder mTileDecoder;
 	protected final UrlTileSource mTileSource;
 	protected final boolean mUseCache;
 
-	public UrlTileDataSource(UrlTileSource tileSource, ITileDecoder tileDecoder, LwHttp conn) {
+	public UrlTileDataSource(UrlTileSource tileSource, ITileDecoder tileDecoder, HttpEngine conn) {
 		mTileDecoder = tileDecoder;
 		mTileSource = tileSource;
 		mUseCache = (tileSource.tileCache != null);
@@ -74,10 +74,9 @@ public class UrlTileDataSource implements ITileDataSource {
 		boolean success = false;
 		TileWriter cacheWriter = null;
 		try {
-			InputStream is;
-			if (!mConn.sendRequest(mTileSource, tile)) {
-				log.debug("{} Request failed", tile);
-			} else if ((is = mConn.read()) == null) {
+			mConn.sendRequest(tile);
+			InputStream is = mConn.read();
+			if (is == null) {
 				log.debug("{} Network Error", tile);
 			} else {
 				if (mUseCache) {

vtm/src/org/oscim/tiling/source/UrlTileSource.java

@@ -18,29 +18,51 @@ package org.oscim.tiling.source;
 
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.util.Collections;
+import java.util.Map;
 
 import org.oscim.core.Tile;
 import org.oscim.tiling.TileSource;
+import org.oscim.tiling.source.LwHttp.LwHttpFactory;
 
 public abstract class UrlTileSource extends TileSource {
 
+	public final static TileUrlFormatter URL_FORMATTER = new DefaultTileUrlFormatter();
 	private final URL mUrl;
-	private byte[] mExt;
+	private final String[] mTilePath;
+
+	private HttpEngine.Factory mHttpFactory;
+	private Map<String, String> mRequestHeaders = Collections.emptyMap();
+	private TileUrlFormatter mTileUrlFormatter = URL_FORMATTER;
+
+	public interface TileUrlFormatter {
+		public String formatTilePath(UrlTileSource tileSource, Tile tile);
+	}
+
+	public UrlTileSource(String url, String tilePath, int zoomMin, int zoomMax) {
+		this(url, tilePath);
+		mZoomMin = zoomMin;
+		mZoomMax = zoomMax;
+	}
+
+	/**
+	 * @param urlString 'http://example.com/'
+	 * @param tilePath replacement string for tile coordinates,
+	 *            e.g. '{Z}/{X}/{Y}.png'
+	 */
+	public UrlTileSource(String urlString, String tilePath) {
+
+		if (tilePath == null)
+			throw new IllegalArgumentException("tilePath cannot be null.");
 
-	public UrlTileSource(String urlString) {
 		URL url = null;
 		try {
 			url = new URL(urlString);
 		} catch (MalformedURLException e) {
-			e.printStackTrace();
+			throw new IllegalArgumentException(e);
 		}
 		mUrl = url;
-	}
-
-	public UrlTileSource(String url, int zoomMin, int zoomMax) {
-		this(url);
-		mZoomMin = zoomMin;
-		mZoomMax = zoomMax;
+		mTilePath = tilePath.split("\\{|\\}");
 	}
 
 	@Override
@@ -53,58 +75,72 @@ public abstract class UrlTileSource extends TileSource {
 
 	}
 
-	protected void setExtension(String ext) {
-		if (ext == null) {
-			mExt = null;
-			return;
-		}
-		mExt = ext.getBytes();
-	}
-
-	protected void setMimeType(String string) {
-
-	}
-
-	/**
-	 * Create url path for tile
-	 */
-	protected String getTileUrl(Tile tile) {
-		return null;
-	}
-
-	/**
-	 * Write tile url - the low level, no-allocations method,
-	 * 
-	 * override getTileUrl() for custom url formatting using
-	 * Strings
-	 * 
-	 * @param tile the Tile
-	 * @param buf to write url string
-	 * @param pos current position
-	 * @return new position
-	 */
-	public int formatTilePath(Tile tile, byte[] buf, int pos) {
-		String p = getTileUrl(tile);
-		if (p != null) {
-			byte[] b = p.getBytes();
-			System.arraycopy(b, 0, buf, pos, b.length);
-			return pos + b.length;
-		}
-
-		buf[pos++] = '/';
-		pos = LwHttp.writeInt(tile.zoomLevel, pos, buf);
-		buf[pos++] = '/';
-		pos = LwHttp.writeInt(tile.tileX, pos, buf);
-		buf[pos++] = '/';
-		pos = LwHttp.writeInt(tile.tileY, pos, buf);
-		if (mExt == null)
-			return pos;
-
-		System.arraycopy(mExt, 0, buf, pos, mExt.length);
-		return pos + mExt.length;
-	}
-
 	public URL getUrl() {
 		return mUrl;
 	}
+
+	public String getTileUrl(Tile tile) {
+		return mUrl + mTileUrlFormatter.formatTilePath(this, tile);
+	}
+
+	public void setHttpEngine(HttpEngine.Factory httpFactory) {
+		mHttpFactory = httpFactory;
+	}
+
+	public void setHttpRequestHeaders(Map<String, String> options) {
+		mRequestHeaders = options;
+	}
+
+	public Map<String, String> getRequestHeader() {
+		return mRequestHeaders;
+	}
+
+	public String[] getTilePath() {
+		return mTilePath;
+	}
+
+	/**
+	 * 
+	 */
+	public void setUrlFormatter(TileUrlFormatter formatter) {
+		mTileUrlFormatter = formatter;
+	}
+
+	public TileUrlFormatter getUrlFormatter() {
+		return mTileUrlFormatter;
+	}
+
+	public HttpEngine getHttpEngine() {
+		if (mHttpFactory == null) {
+			mHttpFactory = new LwHttpFactory();
+		}
+		return mHttpFactory.create(this);
+	}
+
+	static class DefaultTileUrlFormatter implements TileUrlFormatter {
+		@Override
+		public String formatTilePath(UrlTileSource tileSource, Tile tile) {
+
+			StringBuilder sb = new StringBuilder();
+			for (String b : tileSource.getTilePath()) {
+				if (b.length() == 1) {
+					switch (b.charAt(0)) {
+						case 'X':
+							sb.append(tile.tileX);
+							continue;
+						case 'Y':
+							sb.append(tile.tileY);
+							continue;
+						case 'Z':
+							sb.append(tile.zoomLevel);
+							continue;
+						default:
+							break;
+					}
+				}
+				sb.append(b);
+			}
+			return sb.toString();
+		}
+	}
 }

vtm/src/org/oscim/tiling/source/bitmap/BitmapTileSource.java

@@ -26,13 +26,20 @@ public class BitmapTileSource extends UrlTileSource {
 	 * implement getUrlString() for custom formatting.
 	 */
 	public BitmapTileSource(String url, int zoomMin, int zoomMax) {
-		super(url, zoomMin, zoomMax);
-		setExtension(".png");
+		super(url, "/{Z}/{X}/{Y}.png", zoomMin, zoomMax);
+	}
+
+	public BitmapTileSource(String url, int zoomMin, int zoomMax, String extension) {
+		super(url, "/{Z}/{X}/{Y}" + extension, zoomMin, zoomMax);
+	}
+
+	public BitmapTileSource(String url, String tilePath, int zoomMin, int zoomMax) {
+		super(url, tilePath, zoomMin, zoomMax);
 	}
 
 	@Override
 	public ITileDataSource getDataSource() {
-		return new UrlTileDataSource(this, new BitmapTileDecoder(), new LwHttp(getUrl()));
+		return new UrlTileDataSource(this, new BitmapTileDecoder(), getHttpEngine());
 	}
 
 	public class BitmapTileDecoder implements ITileDecoder {

vtm/src/org/oscim/tiling/source/bitmap/DefaultSources.java

@@ -1,6 +1,5 @@
 package org.oscim.tiling.source.bitmap;
 
-import org.oscim.core.Tile;
 import org.oscim.layers.tile.bitmap.BitmapTileLayer.FadeStep;
 
 /**
@@ -35,15 +34,13 @@ public class DefaultSources {
 
 	public static class ImagicoLandcover extends BitmapTileSource {
 		public ImagicoLandcover() {
-			super("http://www.imagico.de/map/tiles/landcover", 0, 6);
-			setExtension(".jpg");
+			super("http://www.imagico.de/map/tiles/landcover", 0, 6, ".jpg");
 		}
 	}
 
 	public static class MapQuestAerial extends BitmapTileSource {
 		public MapQuestAerial() {
-			super("http://otile1.mqcdn.com/tiles/1.0.0/sat", 0, 8);
-			setExtension(".jpg");
+			super("http://otile1.mqcdn.com/tiles/1.0.0/sat", 0, 8, ".jpg");
 		}
 
 		@Override
@@ -64,38 +61,17 @@ public class DefaultSources {
 	}
 
 	public static class ArcGISWorldShaded extends BitmapTileSource {
-		private final StringBuilder sb = new StringBuilder(32);
-
 		public ArcGISWorldShaded() {
-			super("http://server.arcgisonline.com/ArcGIS/rest/services", 0, 13);
-		}
-
-		@Override
-		public synchronized String getTileUrl(Tile tile) {
-			sb.setLength(0);
-			//sb.append("/World_Imagery/MapServer/tile/");
-			sb.append("/World_Shaded_Relief/MapServer/tile/");
-			sb.append(tile.zoomLevel);
-			sb.append('/').append(tile.tileY);
-			sb.append('/').append(tile.tileX);
-			return sb.toString();
+			super("http://server.arcgisonline.com/ArcGIS/rest/services" +
+			        "/World_Shaded_Relief/MapServer/tile/",
+			      "{Z}/{Y}/{X}", 0, 13);
 		}
 	}
 
 	public static class HillShadeHD extends BitmapTileSource {
-		private final StringBuilder sb = new StringBuilder(32);
-
 		public HillShadeHD() {
-			super("http://129.206.74.245:8004/tms_hs.ashx", 2, 16);
-		}
-
-		@Override
-		public synchronized String getTileUrl(Tile tile) {
-			sb.setLength(0);
-			sb.append("?x=").append(tile.tileX);
-			sb.append("&y=").append(tile.tileY);
-			sb.append("&z=").append(tile.zoomLevel);
-			return sb.toString();
+			super("http://129.206.74.245:8004/tms_hs.ashx",
+			      "?x={X}&y={Y}&z={Z}", 2, 16);
 		}
 	}
 
@@ -104,23 +80,8 @@ public class DefaultSources {
 	 * https://developers.google.com/maps/faq
 	 */
 	public static class GoogleMaps extends BitmapTileSource {
-		private final StringBuilder sb = new StringBuilder(60);
-
 		public GoogleMaps(String hostName) {
-			super(hostName, 1, 20); //jpeg for sat
-		}
-
-		@Override
-		public synchronized String getTileUrl(Tile tile) {
-			sb.setLength(0);
-			sb.append("/vt/x="); //lyrs=y&
-			sb.append(tile.tileX);
-			sb.append("&y=");
-			sb.append(tile.tileY);
-			sb.append("&z=");
-			sb.append(tile.zoomLevel);
-			sb.append("&s=Galileo&scale=2");
-			return sb.toString();
+			super(hostName, "/vt/x={X}&y={Y}&z={Z}&s=Galileo&scale=2", 1, 20); //jpeg for sat
 		}
 	}
 

vtm/src/org/oscim/tiling/source/oscimap4/OSciMap4TileSource.java

@@ -17,7 +17,6 @@
 package org.oscim.tiling.source.oscimap4;
 
 import org.oscim.tiling.ITileDataSource;
-import org.oscim.tiling.source.LwHttp;
 import org.oscim.tiling.source.UrlTileDataSource;
 import org.oscim.tiling.source.UrlTileSource;
 
@@ -28,12 +27,11 @@ public class OSciMap4TileSource extends UrlTileSource {
 	}
 
 	public OSciMap4TileSource(String url) {
-		super(url);
-		setExtension(".vtm");
+		super(url, "/{Z}/{X}/{Y}.vtm");
 	}
 
 	@Override
 	public ITileDataSource getDataSource() {
-		return new UrlTileDataSource(this, new TileDecoder(), new LwHttp(getUrl()));
+		return new UrlTileDataSource(this, new TileDecoder(), getHttpEngine());
 	}
 }

vtm/src/org/oscim/utils/IOUtils.java

@@ -19,39 +19,44 @@ package org.oscim.utils;
 import java.io.Closeable;
 import java.io.IOException;
 import java.net.Socket;
-import java.util.logging.Level;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A utility class with IO-specific helper methods.
  */
 public final class IOUtils {
+	final static Logger log = LoggerFactory.getLogger(IOUtils.class);
 
 	/**
 	 * Invokes the {@link Closeable#close()} method on the given object. If an
 	 * {@link IOException} occurs during the
-	 * method call, it will be caught and logged on level {@link Level#WARNING}.
+	 * method call, it will be caught and logged.
 	 * 
 	 * @param closeable
 	 *            the data source which should be closed (may be null).
 	 */
 	public static void closeQuietly(Closeable closeable) {
+		if (closeable == null)
+			return;
+
 		try {
-			if (closeable != null) {
-				closeable.close();
-			}
+			closeable.close();
 		} catch (IOException e) {
-			//log.debug(e.getMessage() + " " + e);
+			log.debug(e.getMessage());
 		}
 	}
 
 	/* for old java versions */
 	public static void closeQuietly(Socket closeable) {
+		if (closeable == null)
+			return;
+
 		try {
-			if (closeable != null) {
-				closeable.close();
-			}
+			closeable.close();
 		} catch (IOException e) {
-			//log.debug(e.getMessage() + " " + e);
+			log.debug(e.getMessage());
 		}
 	}