public class HttpStaticFileServerHandler extends SimpleChannelInboundHandler<FullHttpRequest>
'If-Modified-Since'
header to
take advantage of browser cache, as described in
RFC 2616.
/file1.txt
./file1.txt
is cached by the browser./file1.txt
does return the contents of the
file again. Rather, a 304 Not Modified is returned. This tells the
browser to use the contents stored in its cache.If-Modified-Since
date is the same as the file's last
modified date.Request #1 Headers =================== GET /file1.txt HTTP/1.1 Response #1 Headers =================== HTTP/1.1 200 OK Date: Tue, 01 Mar 2011 22:44:26 GMT Last-Modified: Wed, 30 Jun 2010 21:36:48 GMT Expires: Tue, 01 Mar 2012 22:44:26 GMT Cache-Control: private, max-age=31536000 Request #2 Headers =================== GET /file1.txt HTTP/1.1 If-Modified-Since: Wed, 30 Jun 2010 21:36:48 GMT Response #2 Headers =================== HTTP/1.1 304 Not Modified Date: Tue, 01 Mar 2011 22:44:28 GMT
ChannelHandler.Sharable
Modifier and Type | Field and Description |
---|---|
static int |
HTTP_CACHE_SECONDS |
static String |
HTTP_DATE_FORMAT |
static String |
HTTP_DATE_GMT_TIMEZONE |
Constructor and Description |
---|
HttpStaticFileServerHandler() |
Modifier and Type | Method and Description |
---|---|
void |
channelRead0(ChannelHandlerContext ctx,
FullHttpRequest request)
Please keep in mind that this method will be renamed to
messageReceived(ChannelHandlerContext, I) in 5.0. |
void |
exceptionCaught(ChannelHandlerContext ctx,
Throwable cause)
Calls
ChannelHandlerContext.fireExceptionCaught(Throwable) to forward
to the next ChannelHandler in the ChannelPipeline . |
acceptInboundMessage, channelRead
channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, userEventTriggered
handlerAdded, handlerRemoved, isSharable
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
handlerAdded, handlerRemoved
public static final String HTTP_DATE_FORMAT
public static final String HTTP_DATE_GMT_TIMEZONE
public static final int HTTP_CACHE_SECONDS
public void channelRead0(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception
SimpleChannelInboundHandler
messageReceived(ChannelHandlerContext, I)
in 5.0.
Is called for each message of type I
.channelRead0
in class SimpleChannelInboundHandler<FullHttpRequest>
ctx
- the ChannelHandlerContext
which this SimpleChannelInboundHandler
belongs torequest
- the message to handleException
- is thrown if an error occurredpublic void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
ChannelInboundHandlerAdapter
ChannelHandlerContext.fireExceptionCaught(Throwable)
to forward
to the next ChannelHandler
in the ChannelPipeline
.
Sub-classes may override this method to change behavior.exceptionCaught
in interface ChannelHandler
exceptionCaught
in interface ChannelInboundHandler
exceptionCaught
in class ChannelInboundHandlerAdapter
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