public SetIfModifiedSince() throws Exception {
serverSock = new ServerSocket(0);
int port = serverSock.getLocalPort();
Thread thr = new Thread(this);
thr.start();
Date date = new Date(new Date().getTime() - 1440000); // this time yesterday
URL url;
HttpURLConnection con;
// url = new URL(args[0]);
url = new URL("http://localhost:" + String.valueOf(port) + "/anything");
con = (HttpURLConnection) url.openConnection();
con.setIfModifiedSince(date.getTime());
con.connect();
int ret = con.getResponseCode();
if (ret == 304) {
System.out.println("Success!");
} else {
throw new RuntimeException(
"Test failed! Http return code using setIfModified method is:"
+ ret
+ "\nNOTE:some web servers are not implemented according to RFC, thus a failed test does not necessarily indicate a bug in setIfModifiedSince method");
}
}
public static HttpURLConnection download(final HttpURLConnection con, final File file)
throws IOException {
if (file.exists()) {
con.setIfModifiedSince(file.lastModified());
con.connect();
if (con.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
log.fine("Using " + file.getName() + " from cache");
con.disconnect();
return con;
}
}
log.fine("Downloading new " + file.getName());
final byte[] buffer = downloadBinary(con);
if (!file.exists()) {
file.createNewFile();
}
if (file.exists() && (!file.canRead() || file.canWrite())) {
file.setReadable(true);
file.setWritable(true);
}
if (file.exists() && file.canRead() && file.canWrite()) {
final FileOutputStream fos = new FileOutputStream(file);
fos.write(buffer);
fos.flush();
fos.close();
}
file.setLastModified(con.getLastModified());
con.disconnect();
return con;
}
@Override
public void setIfModifiedSince(long newValue) {
super.setIfModifiedSince(newValue);
if (ifModifiedSince != 0) {
requestHeaders.set("If-Modified-Since", HttpDate.format(new Date(ifModifiedSince)));
} else {
requestHeaders.removeAll("If-Modified-Since");
}
}
/**
* A slightly different implementation from this parent's <code>setIfModifiedSince()</code> Since
* this HTTP impl supports IfModifiedSince as one of the header field, the request header is
* updated with the new value.
*
* @param newValue the number of millisecond since epoch
* @throws IllegalStateException if already connected.
*/
@Override
public void setIfModifiedSince(long newValue) {
super.setIfModifiedSince(newValue);
// convert from millisecond since epoch to date string
SimpleDateFormat sdf =
new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US); // $NON-NLS-1$
sdf.setTimeZone(TimeZone.getTimeZone("GMT")); // $NON-NLS-1$
String date = sdf.format(new Date(newValue));
reqHeader.add("If-Modified-Since", date); // $NON-NLS-1$
}
@Override
public void setIfModifiedSince(long newValue) {
super.setIfModifiedSince(newValue);
if (ifModifiedSince != 0) {
SimpleDateFormat format = new SimpleDateFormat(HTTP_DATE_FORMAT);
String dateString = format.format(new Date(ifModifiedSince));
setHeader("If-Modified-Since", dateString);
} else {
removeHeader("If-Modified-Since");
}
}
@Override
public boolean send() {
boolean isSuccess = false;
HttpURLConnection conn = null;
ByteArrayOutputStream output = null;
InputStream input = null;
String strNetTypeName = "";
try {
String sUrl = getUrl();
if (sUrl == null) {
throw new Exception("you have not set request url");
}
sUrl =
sUrl
+ (getData() == null
? ""
: ((sUrl.indexOf("?") > -1 ? (sUrl.endsWith("&") ? "" : "&") : "?")
+ getParamString()));
Log.d(LOG_TAG, getId() + ":" + sUrl);
URL url = new URL(sUrl);
conn = getConnect(mContext, url);
checkCacnelStatus();
conn.setConnectTimeout(getConnectTimeout());
conn.setReadTimeout(getGetDataTimeout());
final HashMap<String, String> header = getRequestHeader();
if (null != header) {
final Iterator<Entry<String, String>> inerator = header.entrySet().iterator();
while (inerator.hasNext()) {
Entry<String, String> entry = inerator.next();
conn.setRequestProperty(entry.getKey(), entry.getValue());
// Log.d("||" + entry.getKey(), entry.getValue());
}
}
if (mIfModifiedSince > 0) {
conn.setIfModifiedSince(mIfModifiedSince);
}
requestStart = new Date().getTime();
checkCacnelStatus();
conn.connect();
checkCacnelStatus();
final int responseCode = conn.getResponseCode();
mHttpStatus = responseCode;
if (responseCode == HttpStatus.SC_NOT_MODIFIED) {
setResponseHeader(conn);
requestEnd = new Date().getTime();
return true;
}
if (responseCode != HttpStatus.SC_OK) {
Log.d(LOG_TAG, responseCode + "|||");
throw new java.net.SocketException("http status is not 200 or 304");
}
if (conn.getContentType().contains("text/vnd.wap.wml") == true && tryCount < getTryLimit()) {
tryCount++;
return send();
}
output = new ByteArrayOutputStream();
input = conn.getInputStream();
final int totalSize = conn.getContentLength();
int num = 0, downLoaded = 0;
byte[] buf = new byte[BUFFERSIZE];
while (mIsNeedResponse && !checkCacnelStatus() && (num = input.read(buf)) != -1) {
output.write(buf, 0, num);
downLoaded += num;
if (mOnProgressListener != null) {
long now = ToolUtil.getCurrentTime();
if (now - lastProgressNotifyTime > PROGRESS_NOTIFY_OFFSET) {
lastProgressNotifyTime = now;
mOnProgressListener.onProgress(null, downLoaded, totalSize);
}
}
}
checkCacnelStatus();
requestEnd = ToolUtil.getCurrentTime();
checkCacnelStatus();
setResult(conn, output);
buf = null;
isSuccess = true;
} catch (CancelException ex) {
Log.e(LOG_TAG, "HttpStatus = " + mHttpStatus + "\n" + ToolUtil.getStackTraceString(ex));
} catch (java.net.ConnectException ex) {
Log.e(
LOG_TAG,
"HttpStatus = " + mHttpStatus + "\n" + ToolUtil.getStackTraceString(ex) + " " + getId());
strNetTypeName = HttpUtil.getNetTypeName();
StatisticsEngine.trackEvent(
IcsonApplication.app,
"http_connect_exception",
"network: " + strNetTypeName + ", HttpStatus = " + mHttpStatus);
} catch (java.net.SocketException ex) {
Log.e(
LOG_TAG,
"HttpStatus = " + mHttpStatus + "\n" + ToolUtil.getStackTraceString(ex) + " " + getId());
strNetTypeName = HttpUtil.getNetTypeName();
StatisticsEngine.trackEvent(
IcsonApplication.app,
"http_socket_exception",
"network: " + strNetTypeName + ", HttpStatus = " + mHttpStatus);
} catch (Exception ex) {
Log.e(LOG_TAG, ToolUtil.getStackTraceString(ex));
strNetTypeName = HttpUtil.getNetTypeName();
StatisticsEngine.trackEvent(
IcsonApplication.app,
"http_other_exception",
"network: " + strNetTypeName + ", HttpStatus = " + mHttpStatus);
} finally {
try {
if (input != null) {
input.close();
input = null;
}
if (output != null) {
output.close();
output = null;
}
if (conn != null) {
conn.disconnect();
conn = null;
}
} catch (Exception ex) {
Log.e(LOG_TAG, ToolUtil.getStackTraceString(ex));
}
}
return isSuccess;
}
public static byte[] updateStoredTile(TileStoreEntry tile, HttpMapSource mapSource)
throws UnrecoverableDownloadException, IOException, InterruptedException {
final int x = tile.getX();
final int y = tile.getY();
final int zoom = tile.getZoom();
final HttpMapSource.TileUpdate tileUpdate = mapSource.getTileUpdate();
switch (tileUpdate) {
case ETag:
{
boolean unchanged = hasTileETag(tile, mapSource);
if (unchanged) {
if (log.isTraceEnabled())
log.trace("Data unchanged on server (eTag): " + mapSource + " " + tile);
return null;
}
break;
}
case LastModified:
{
boolean isNewer = isTileNewer(tile, mapSource);
if (!isNewer) {
if (log.isTraceEnabled())
log.trace("Data unchanged on server (LastModified): " + mapSource + " " + tile);
return null;
}
break;
}
}
HttpURLConnection conn = mapSource.getTileUrlConnection(zoom, x, y);
if (conn == null)
throw new UnrecoverableDownloadException(
"Tile x="
+ x
+ " y="
+ y
+ " zoom="
+ zoom
+ " is not a valid tile in map source "
+ mapSource);
if (log.isTraceEnabled()) log.trace(String.format("Checking %s %s", mapSource.getName(), tile));
prepareConnection(conn);
boolean conditionalRequest = false;
switch (tileUpdate) {
case IfNoneMatch:
{
if (tile.geteTag() != null) {
conn.setRequestProperty("If-None-Match", tile.geteTag());
conditionalRequest = true;
}
break;
}
case IfModifiedSince:
{
if (tile.getTimeLastModified() > 0) {
conn.setIfModifiedSince(tile.getTimeLastModified());
conditionalRequest = true;
}
break;
}
}
conn.connect();
Settings s = Settings.getInstance();
int code = conn.getResponseCode();
if (conditionalRequest && code == HttpURLConnection.HTTP_NOT_MODIFIED) {
// Data unchanged on server
if (s.tileStoreEnabled) {
tile.update(conn.getExpiration());
TileStore.getInstance().putTile(tile, mapSource);
}
if (log.isTraceEnabled()) log.trace("Data unchanged on server: " + mapSource + " " + tile);
return null;
}
byte[] data = loadBodyDataInBuffer(conn);
if (code != HttpURLConnection.HTTP_OK) throw new DownloadFailedException(conn, code);
checkContentType(conn, data);
checkContentLength(conn, data);
String eTag = conn.getHeaderField("ETag");
long timeLastModified = conn.getLastModified();
long timeExpires = conn.getExpiration();
Utilities.checkForInterruption();
TileImageType imageType = Utilities.getImageType(data);
if (imageType == null)
throw new UnrecoverableDownloadException("The returned image is of unknown format");
if (s.tileStoreEnabled) {
TileStore.getInstance()
.putTileData(data, x, y, zoom, mapSource, timeLastModified, timeExpires, eTag);
}
Utilities.checkForInterruption();
return data;
}
public void setIfModifiedSince(long l) {
_flddelegate.setIfModifiedSince(l);
}
