Re: DownloadLink hanging
you will be creating a ton of shared resources - one per file which isnt the
greatest
Why you think it is not good? We don't have too much available files ( 20).
Would it be better to give each file resource a unique name instead of the
empty string?
while being a bit more secure iin terms of what files are available for
download it still allows any user to download them and the urls are still
stable.
Well, how do you suggest to work around that problem? My only idea was to
check the session state within the resource (license agreement accepted),
but I'm not sure what to do when the session state does not allow the
download. But this problem also occurs when making your suggested
implementation save by passing just relative paths (relative to the common
download directory on the server) rejecting invalid (e.g. with ../
starting) FILE_PARAM values.
--
Cheers,
Tom
Igor Vaynberg wrote:
i thought about that, two drawbacks
you will be creating a ton of shared resources - one per file which isnt the
greatest
while being a bit more secure iin terms of what files are available for
download it still allows any user to download them and the urls are still
stable. so if you are selling downloads this is obviously not going to work
for you.
-igor
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote:
What do you think about passing the file as constructor parameter in the
FileResourceReference to avoid the security hole (passing the file name as
request parameter)?
--
Cheers,
Tom
Igor Vaynberg wrote:
here is a download link that doesnt block. notice that unlike the
original
it has no security - it's urls are stable and it will stream any file
off
your harddrisk. you can use it as a starting point to build a download
link
suited for your app.
-igor
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version
2.0
* (the License); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.markup.html.link;
import java.io.File;
import org.apache.wicket.Resource;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.Response;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.model.IModel;
import org.apache.wicket.protocol.http.WebResponse;
import org.apache.wicket.util.resource.FileResourceStream;
import org.apache.wicket.util.resource.IResourceStream;
import org.apache.wicket.util.value.ValueMap;
/**
* @author Igor Vaynberg (ivaynberg)
*/
public class DownloadLink extends WebMarkupContainer
{
private static final String FILE_PARAM = file;
private static final long serialVersionUID = 1L;
public DownloadLink(String id, IModel model)
{
super(id, model);
}
protected void onComponentTag(ComponentTag tag)
{
super.onComponentTag(tag);
checkComponentTag(tag, a);
File file = (File)getModelObject();
FileResourceReference ref = new FileResourceReference();
ValueMap params = new ValueMap();
params.put(FILE_PARAM, file.getAbsolutePath());
tag.put(href, getRequestCycle().urlFor(ref, params));
}
/**
*
* @see org.apache.wicket.markup.html.link.Link#onClick()
*/
private static class FileResourceReference extends ResourceReference
{
public FileResourceReference()
{
super(DownloadLink.class, );
}
private static final long serialVersionUID = 1L;
protected Resource newResource()
{
return new Resource()
{
private static final long serialVersionUID = 1L;
public IResourceStream getResourceStream()
{
return new FileResourceStream(getFile());
}
protected void configureResponse(Response response)
{
((WebResponse)response).setAttachmentHeader(getFile().getName());
}
private File getFile()
{
return new
File(getParameters().getString(FILE_PARAM));
}
};
}
}
}
On 8/27/07, Matej Knopp [EMAIL PROTECTED] wrote:
The blocking is necessary in order not to corrupt session state. We
have
as
fine grained
Re: DownloadLink hanging
see all these kinds of questions start coming up, that is why download link
is made the way it is. you have none of these worries and it is very secure
by default. so i think when it comes to these issues what i will be
concentrating on is making downloadlink not block. whether it will be for
1.3 or for 1.4
-igor
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote:
you will be creating a ton of shared resources - one per file which isnt
the
greatest
Why you think it is not good? We don't have too much available files (
20).
Would it be better to give each file resource a unique name instead of the
empty string?
while being a bit more secure iin terms of what files are available for
download it still allows any user to download them and the urls are
still
stable.
Well, how do you suggest to work around that problem? My only idea was to
check the session state within the resource (license agreement accepted),
but I'm not sure what to do when the session state does not allow the
download. But this problem also occurs when making your suggested
implementation save by passing just relative paths (relative to the common
download directory on the server) rejecting invalid (e.g. with ../
starting) FILE_PARAM values.
--
Cheers,
Tom
Igor Vaynberg wrote:
i thought about that, two drawbacks
you will be creating a ton of shared resources - one per file which isnt
the
greatest
while being a bit more secure iin terms of what files are available for
download it still allows any user to download them and the urls are
still
stable. so if you are selling downloads this is obviously not going to
work
for you.
-igor
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote:
What do you think about passing the file as constructor parameter in
the
FileResourceReference to avoid the security hole (passing the file name
as
request parameter)?
--
Cheers,
Tom
Igor Vaynberg wrote:
here is a download link that doesnt block. notice that unlike the
original
it has no security - it's urls are stable and it will stream any file
off
your harddrisk. you can use it as a starting point to build a download
link
suited for your app.
-igor
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version
2.0
* (the License); you may not use this file except in compliance
with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.markup.html.link;
import java.io.File;
import org.apache.wicket.Resource;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.Response;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.model.IModel;
import org.apache.wicket.protocol.http.WebResponse;
import org.apache.wicket.util.resource.FileResourceStream;
import org.apache.wicket.util.resource.IResourceStream;
import org.apache.wicket.util.value.ValueMap;
/**
* @author Igor Vaynberg (ivaynberg)
*/
public class DownloadLink extends WebMarkupContainer
{
private static final String FILE_PARAM = file;
private static final long serialVersionUID = 1L;
public DownloadLink(String id, IModel model)
{
super(id, model);
}
protected void onComponentTag(ComponentTag tag)
{
super.onComponentTag(tag);
checkComponentTag(tag, a);
File file = (File)getModelObject();
FileResourceReference ref = new FileResourceReference();
ValueMap params = new ValueMap();
params.put(FILE_PARAM, file.getAbsolutePath());
tag.put(href, getRequestCycle().urlFor(ref, params));
}
/**
*
* @see org.apache.wicket.markup.html.link.Link#onClick()
*/
private static class FileResourceReference extends
ResourceReference
{
public FileResourceReference()
{
super(DownloadLink.class, );
}
private static final long serialVersionUID = 1L;
protected Resource newResource()
{
return new Resource()
{
private static final long serialVersionUID = 1L;
public IResourceStream getResourceStream()
{
Re: DownloadLink hanging
Isn't fixing bugs the task of the Wicket developers? We don't have a problem
ordering support, but I could not find information where to get it.
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
if it is that urgent why not create a patch?
-igor
On 8/26/07, Thomas Singer [EMAIL PROTECTED] wrote:
BTW, as long as this issue is not fixed, we can't take our Wicket-based
website online. This is a show-stopper bug for us. :(
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Thomas Singer wrote:
Done: https://issues.apache.org/jira/browse/WICKET-878
Tom
Igor Vaynberg wrote:
yep
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
Should I report a bug in JIRA?
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
hm, this looks like an old bug. johan didnt we fix this a while ago?
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
inside shared
resource you can simply call Session.get() to get to wicket
session.
Unfortunately, it looks like this is not possible, because I'm
getting
following exception:
java.lang.IllegalStateException: you can only locate or create
sessions
in the context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(
DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(
WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
well, it kind of is the task of the developers, but it's totally up to them
to choose when they fix (or not fix) which bugs.
also, what keeps you from contributing?
anyway, companies providing commercial support are listed in the wiki:
http://cwiki.apache.org/WICKET/companies-that-provide-services.html
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote:
Isn't fixing bugs the task of the Wicket developers? We don't have a
problem
ordering support, but I could not find information where to get it.
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
if it is that urgent why not create a patch?
-igor
On 8/26/07, Thomas Singer [EMAIL PROTECTED] wrote:
BTW, as long as this issue is not fixed, we can't take our Wicket-based
website online. This is a show-stopper bug for us. :(
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Thomas Singer wrote:
Done: https://issues.apache.org/jira/browse/WICKET-878
Tom
Igor Vaynberg wrote:
yep
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
Should I report a bug in JIRA?
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
hm, this looks like an old bug. johan didnt we fix this a while
ago?
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
inside shared
resource you can simply call Session.get() to get to wicket
session.
Unfortunately, it looks like this is not possible, because I'm
getting
following exception:
java.lang.IllegalStateException: you can only locate or create
sessions
in the context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(
DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(
WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Isn't fixing bugs the task of the Wicket developers? We don't have a problem ordering support, but I could not find information where to get it. It's unfortunate you have an urgent problem. Sorry about that. However, everyone of the development team does most of the working on Wicket, including following this very time consuming mailing list, in their spare time. Some of us joined in a support initiative: http://www.wicket-support.com/, and you might be able to get some very direct support there. For all I know they are pretty busy right now. As long as Wicket doesn't have the same number of users as Spring of JBoss, it's going to be very hard to build support that's always available. And there are the companies listed at http://cwiki.apache.org/WICKET/companies-that-provide-services.html like Gerolf said. Your best bet on getting quick support is to fix it yourself and send in a patch. This is not because we're lazy, but because we're very short on spare time. It may be easier than you think to provide a patch, and maybe you get hire a wizard programmer somewhere who knows his or her way around Wicket. Regards, Eelco - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
Your best bet on getting quick support is to fix it yourself and send in a patch. Well, if that would be possible, I would have done that or worked around it myself (like done with some own components). http://www.wicket-support.com/ Sorry to say, but I hate websites where you can't find an address on it. What Wicket core developer can provide support (e.g. because (s)he is working in the mentioned companies)? Or are you only working in your spare-time on Wicket? Please understand me: I had a good feeling about Wicket, but this show-stopper problem makes me feel a little bit sick, because I don't know whether there are other such problems which prevent using Wicket for our website at all. BTW, I still have the feeling, that if Wicket provides a feature to download something large (except normal pages), it must not block until this file is downloaded. My co-worker told me (I haven't verified), that he stopped the download and this also blocked Wicket. He had to restart Tomcat! -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com Eelco Hillenius wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Isn't fixing bugs the task of the Wicket developers? We don't have a problem ordering support, but I could not find information where to get it. It's unfortunate you have an urgent problem. Sorry about that. However, everyone of the development team does most of the working on Wicket, including following this very time consuming mailing list, in their spare time. Some of us joined in a support initiative: http://www.wicket-support.com/, and you might be able to get some very direct support there. For all I know they are pretty busy right now. As long as Wicket doesn't have the same number of users as Spring of JBoss, it's going to be very hard to build support that's always available. And there are the companies listed at http://cwiki.apache.org/WICKET/companies-that-provide-services.html like Gerolf said. Your best bet on getting quick support is to fix it yourself and send in a patch. This is not because we're lazy, but because we're very short on spare time. It may be easier than you think to provide a patch, and maybe you get hire a wizard programmer somewhere who knows his or her way around Wicket. Regards, Eelco - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
I've commited a possible fix. Can you plase try if it helps your problem? -Matej On 8/27/07, Eelco Hillenius [EMAIL PROTECTED] wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Isn't fixing bugs the task of the Wicket developers? We don't have a problem ordering support, but I could not find information where to get it. It's unfortunate you have an urgent problem. Sorry about that. However, everyone of the development team does most of the working on Wicket, including following this very time consuming mailing list, in their spare time. Some of us joined in a support initiative: http://www.wicket-support.com/, and you might be able to get some very direct support there. For all I know they are pretty busy right now. As long as Wicket doesn't have the same number of users as Spring of JBoss, it's going to be very hard to build support that's always available. And there are the companies listed at http://cwiki.apache.org/WICKET/companies-that-provide-services.html like Gerolf said. Your best bet on getting quick support is to fix it yourself and send in a patch. This is not because we're lazy, but because we're very short on spare time. It may be easier than you think to provide a patch, and maybe you get hire a wizard programmer somewhere who knows his or her way around Wicket. Regards, Eelco - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Your best bet on getting quick support is to fix it yourself and send in a patch. Well, if that would be possible, I would have done that or worked around it myself (like done with some own components). http://www.wicket-support.com/ Sorry to say, but I hate websites where you can't find an address on it. Maybe that's because we're all over the world! :) I think it is Matej who set this up, and who is the principal guy behind it. He could put his address there if he'd like. What Wicket core developer can provide support (e.g. because (s)he is working in the mentioned companies)? Or are you only working in your spare-time on Wicket? I can't speak for all, but most of us have full time jobs. Which often involves Wicket, but have their own schedules of course. Please understand me: I had a good feeling about Wicket, but this show-stopper problem makes me feel a little bit sick, because I don't know whether there are other such problems which prevent using Wicket for our website at all. I hope none. To the upside, at least you have the source, can fix it yourself or hire people for it, and we're usually moving pretty fast compared to many competing web frameworks. BTW, I still have the feeling, that if Wicket provides a feature to download something large (except normal pages), it must not block until this file is downloaded. My co-worker told me (I haven't verified), that he stopped the download and this also blocked Wicket. He had to restart Tomcat! Impossible. It can block the session until the request times out, which is a minute or such. Now back to your problem, if you get java.lang.IllegalStateException: you can only locate or create sessions in the context of a request cycle org.apache.wicket.Session.findOrCreate(Session.java:250) org.apache.wicket.Session.get(Session.java:279) com.syntevo.hpsmart.DownloadResource.getResourceStream(DownloadResource.java:18) org.apache.wicket.protocol.http.WicketFilter.getLastModified(WicketFilter.java:708) org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:122) how about for a work around just creating the request cycle before you try to get the session? Kind of ugly but it might work until the bug is found (I believe Igor thinks this is something for Johan to check out). Eelco - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Your best bet on getting quick support is to fix it yourself and send in a patch. Well, if that would be possible, I would have done that or worked around it myself (like done with some own components). http://www.wicket-support.com/ Sorry to say, but I hate websites where you can't find an address on it. I think the email address is quite obvious. What Wicket core developer can provide support (e.g. because (s)he is working in the mentioned companies)? Or are you only working in your spare-time on Wicket? Please understand me: I had a good feeling about Wicket, but this show-stopper problem makes me feel a little bit sick, because I don't know whether there are other such problems which prevent using Wicket for our website at all. Ever heard of open source? Just think about it a little. You have a product that a group of people spend lot of time developing and they are giving it to you for free. So now just because your problem haven't been fixed in 10 hours, you feel sick about it? BTW, I still have the feeling, that if Wicket provides a feature to download something large (except normal pages), it must not block until this file is downloaded. My co-worker told me (I haven't verified), that he stopped the download and this also blocked Wicket. He had to restart Tomcat! It blocks only if that is a component request (it blocks on pagemap). If you have large files you need to use shared resources that don't block. Also the block is only one pagemap only (thus one session) and it lasts only for a minute. No need to restart tomcat server. -Matej -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com Eelco Hillenius wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Isn't fixing bugs the task of the Wicket developers? We don't have a problem ordering support, but I could not find information where to get it. It's unfortunate you have an urgent problem. Sorry about that. However, everyone of the development team does most of the working on Wicket, including following this very time consuming mailing list, in their spare time. Some of us joined in a support initiative: http://www.wicket-support.com/, and you might be able to get some very direct support there. For all I know they are pretty busy right now. As long as Wicket doesn't have the same number of users as Spring of JBoss, it's going to be very hard to build support that's always available. And there are the companies listed at http://cwiki.apache.org/WICKET/companies-that-provide-services.html like Gerolf said. Your best bet on getting quick support is to fix it yourself and send in a patch. This is not because we're lazy, but because we're very short on spare time. It may be easier than you think to provide a patch, and maybe you get hire a wizard programmer somewhere who knows his or her way around Wicket. Regards, Eelco - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
I think the email address is quite obvious. I'm talking about real addresses. But as Eelco already stated, it might be hard to list them because you are scattered over the world. I'll accept that. Ever heard of open source? Just think about it a little. You have a product that a group of people spend lot of time developing and they are giving it to you for free. Sure, I know the advantages (and disadvantages) of Open Source. I thank you for making Wicket freely available and try to spread good words about it (if possible). So now just because your problem haven't been fixed in 10 hours, you feel sick about it? No, I just feel (a little bit!) sick, that we've found such a IMHO major problem after having invested a couple of weeks work. It blocks only if that is a component request (it blocks on pagemap). If you have large files you need to use shared resources that don't block. Also the block is only one pagemap only (thus one session) and it lasts only for a minute. No need to restart tomcat server. Most likely I don't understand the reasons behind the blocking, but from a user's point of view, a *download* never should block the application. The timeout (from the server side!) is also not very good for raising the website-user's trust. I know we are ab-using Wicket a little bit for a web*site*, but when I think on a web*application* like JIRA, I also can't imagine at least one usecase (always from my user's point of view) which accepts a timeout or blocking when downloading a larger file. -- Cheers, Tom Matej Knopp wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Your best bet on getting quick support is to fix it yourself and send in a patch. Well, if that would be possible, I would have done that or worked around it myself (like done with some own components). http://www.wicket-support.com/ Sorry to say, but I hate websites where you can't find an address on it. I think the email address is quite obvious. What Wicket core developer can provide support (e.g. because (s)he is working in the mentioned companies)? Or are you only working in your spare-time on Wicket? Please understand me: I had a good feeling about Wicket, but this show-stopper problem makes me feel a little bit sick, because I don't know whether there are other such problems which prevent using Wicket for our website at all. Ever heard of open source? Just think about it a little. You have a product that a group of people spend lot of time developing and they are giving it to you for free. So now just because your problem haven't been fixed in 10 hours, you feel sick about it? BTW, I still have the feeling, that if Wicket provides a feature to download something large (except normal pages), it must not block until this file is downloaded. My co-worker told me (I haven't verified), that he stopped the download and this also blocked Wicket. He had to restart Tomcat! It blocks only if that is a component request (it blocks on pagemap). If you have large files you need to use shared resources that don't block. Also the block is only one pagemap only (thus one session) and it lasts only for a minute. No need to restart tomcat server. -Matej -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com Eelco Hillenius wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Isn't fixing bugs the task of the Wicket developers? We don't have a problem ordering support, but I could not find information where to get it. It's unfortunate you have an urgent problem. Sorry about that. However, everyone of the development team does most of the working on Wicket, including following this very time consuming mailing list, in their spare time. Some of us joined in a support initiative: http://www.wicket-support.com/, and you might be able to get some very direct support there. For all I know they are pretty busy right now. As long as Wicket doesn't have the same number of users as Spring of JBoss, it's going to be very hard to build support that's always available. And there are the companies listed at http://cwiki.apache.org/WICKET/companies-that-provide-services.html like Gerolf said. Your best bet on getting quick support is to fix it yourself and send in a patch. This is not because we're lazy, but because we're very short on spare time. It may be easier than you think to provide a patch, and maybe you get hire a wizard programmer somewhere who knows his or her way around Wicket. Regards, Eelco - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL
Re: DownloadLink hanging
The blocking is necessary in order not to corrupt session state. We have as fine grained locking as possible (under the circumstances). Web applications are by nature multi-threaded. If you don't synchronize the access to certain resources (sessions) you can get bugs that are very difficult to trace. If you need download link, there are alternatives that don't block such as shared resource. -Matej On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: I think the email address is quite obvious. I'm talking about real addresses. But as Eelco already stated, it might be hard to list them because you are scattered over the world. I'll accept that. Ever heard of open source? Just think about it a little. You have a product that a group of people spend lot of time developing and they are giving it to you for free. Sure, I know the advantages (and disadvantages) of Open Source. I thank you for making Wicket freely available and try to spread good words about it (if possible). So now just because your problem haven't been fixed in 10 hours, you feel sick about it? No, I just feel (a little bit!) sick, that we've found such a IMHO major problem after having invested a couple of weeks work. It blocks only if that is a component request (it blocks on pagemap). If you have large files you need to use shared resources that don't block. Also the block is only one pagemap only (thus one session) and it lasts only for a minute. No need to restart tomcat server. Most likely I don't understand the reasons behind the blocking, but from a user's point of view, a *download* never should block the application. The timeout (from the server side!) is also not very good for raising the website-user's trust. I know we are ab-using Wicket a little bit for a web*site*, but when I think on a web*application* like JIRA, I also can't imagine at least one usecase (always from my user's point of view) which accepts a timeout or blocking when downloading a larger file. -- Cheers, Tom Matej Knopp wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Your best bet on getting quick support is to fix it yourself and send in a patch. Well, if that would be possible, I would have done that or worked around it myself (like done with some own components). http://www.wicket-support.com/ Sorry to say, but I hate websites where you can't find an address on it. I think the email address is quite obvious. What Wicket core developer can provide support (e.g. because (s)he is working in the mentioned companies)? Or are you only working in your spare-time on Wicket? Please understand me: I had a good feeling about Wicket, but this show-stopper problem makes me feel a little bit sick, because I don't know whether there are other such problems which prevent using Wicket for our website at all. Ever heard of open source? Just think about it a little. You have a product that a group of people spend lot of time developing and they are giving it to you for free. So now just because your problem haven't been fixed in 10 hours, you feel sick about it? BTW, I still have the feeling, that if Wicket provides a feature to download something large (except normal pages), it must not block until this file is downloaded. My co-worker told me (I haven't verified), that he stopped the download and this also blocked Wicket. He had to restart Tomcat! It blocks only if that is a component request (it blocks on pagemap). If you have large files you need to use shared resources that don't block. Also the block is only one pagemap only (thus one session) and it lasts only for a minute. No need to restart tomcat server. -Matej -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com Eelco Hillenius wrote: On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote: Isn't fixing bugs the task of the Wicket developers? We don't have a problem ordering support, but I could not find information where to get it. It's unfortunate you have an urgent problem. Sorry about that. However, everyone of the development team does most of the working on Wicket, including following this very time consuming mailing list, in their spare time. Some of us joined in a support initiative: http://www.wicket-support.com/, and you might be able to get some very direct support there. For all I know they are pretty busy right now. As long as Wicket doesn't have the same number of users as Spring of JBoss, it's going to be very hard to build support that's always available. And there are the companies listed at http://cwiki.apache.org/WICKET/companies-that-provide-services.html like Gerolf said. Your best bet on getting quick support is to fix it yourself and send in a patch. This is not because we're lazy, but because we're very short on
Re: DownloadLink hanging
here is a download link that doesnt block. notice that unlike the original
it has no security - it's urls are stable and it will stream any file off
your harddrisk. you can use it as a starting point to build a download link
suited for your app.
-igor
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the License); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.markup.html.link;
import java.io.File;
import org.apache.wicket.Resource;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.Response;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.model.IModel;
import org.apache.wicket.protocol.http.WebResponse;
import org.apache.wicket.util.resource.FileResourceStream;
import org.apache.wicket.util.resource.IResourceStream;
import org.apache.wicket.util.value.ValueMap;
/**
* @author Igor Vaynberg (ivaynberg)
*/
public class DownloadLink extends WebMarkupContainer
{
private static final String FILE_PARAM = file;
private static final long serialVersionUID = 1L;
public DownloadLink(String id, IModel model)
{
super(id, model);
}
protected void onComponentTag(ComponentTag tag)
{
super.onComponentTag(tag);
checkComponentTag(tag, a);
File file = (File)getModelObject();
FileResourceReference ref = new FileResourceReference();
ValueMap params = new ValueMap();
params.put(FILE_PARAM, file.getAbsolutePath());
tag.put(href, getRequestCycle().urlFor(ref, params));
}
/**
*
* @see org.apache.wicket.markup.html.link.Link#onClick()
*/
private static class FileResourceReference extends ResourceReference
{
public FileResourceReference()
{
super(DownloadLink.class, );
}
private static final long serialVersionUID = 1L;
protected Resource newResource()
{
return new Resource()
{
private static final long serialVersionUID = 1L;
public IResourceStream getResourceStream()
{
return new FileResourceStream(getFile());
}
protected void configureResponse(Response response)
{
((WebResponse)response).setAttachmentHeader(getFile().getName());
}
private File getFile()
{
return new File(getParameters().getString(FILE_PARAM));
}
};
}
}
}
On 8/27/07, Matej Knopp [EMAIL PROTECTED] wrote:
The blocking is necessary in order not to corrupt session state. We have
as
fine grained locking as possible (under the circumstances). Web
applications
are by nature multi-threaded. If you don't synchronize the access to
certain
resources (sessions) you can get bugs that are very difficult to trace.
If you need download link, there are alternatives that don't block such as
shared resource.
-Matej
On 8/27/07, Thomas Singer [EMAIL PROTECTED] wrote:
I think the email address is quite obvious.
I'm talking about real addresses. But as Eelco already stated, it might
be
hard to list them because you are scattered over the world. I'll accept
that.
Ever heard of open source? Just think about it a little. You have a
product
that a group of people spend lot of time developing and they are
giving
it
to you for free.
Sure, I know the advantages (and disadvantages) of Open Source. I thank
you
for making Wicket freely available and try to spread good words about it
(if
possible).
So now just because your problem haven't been fixed in 10
hours, you feel sick about it?
No, I just feel (a little bit!) sick, that we've found such a IMHO major
problem after having invested a couple of weeks work.
It blocks only if that is a component request (it blocks on pagemap).
If
you
have large files you need to use shared resources that don't block.
Also
the
block is only one pagemap only (thus one session) and it lasts only
for
a
minute. No need to restart tomcat server.
Most likely I don't understand the reasons behind the blocking, but from
a
user's
Re: DownloadLink hanging
BTW, as long as this issue is not fixed, we can't take our Wicket-based
website online. This is a show-stopper bug for us. :(
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Thomas Singer wrote:
Done: https://issues.apache.org/jira/browse/WICKET-878
Tom
Igor Vaynberg wrote:
yep
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
Should I report a bug in JIRA?
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
hm, this looks like an old bug. johan didnt we fix this a while ago?
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
inside shared
resource you can simply call Session.get() to get to wicket session.
Unfortunately, it looks like this is not possible, because I'm getting
following exception:
java.lang.IllegalStateException: you can only locate or create
sessions
in the context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(
DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(
WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
Done: https://issues.apache.org/jira/browse/WICKET-878
Tom
Igor Vaynberg wrote:
yep
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
Should I report a bug in JIRA?
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
hm, this looks like an old bug. johan didnt we fix this a while ago?
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
inside shared
resource you can simply call Session.get() to get to wicket session.
Unfortunately, it looks like this is not possible, because I'm getting
following exception:
java.lang.IllegalStateException: you can only locate or create
sessions
in the context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(
DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(
WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
* Igor Vaynberg: yep, DownloadLinks will block because requests to the same page are serialized. Igor, that's a good point. Thomas, did you try to follow the approach shown in the static pages examples? See http://wicketstuff.org/wicket13/staticpages/ -- Jean-Baptiste Quenot aka John Banana Qwerty http://caraldi.com/jbq/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
inside shared
resource you can simply call Session.get() to get to wicket session.
Unfortunately, it looks like this is not possible, because I'm getting
following exception:
java.lang.IllegalStateException: you can only locate or create sessions in the
context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
you can register a shared resource and build a url for it. inside shared
resource you can simply call Session.get() to get to wicket session.
see application.getsharedresources();
alternatively you can extend WicketSessionFilter which will also allow you
to perform Session.get()
-igor
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote:
Disclaimer: I'm not experienced with filters or wicket resources.
Is it possible to create a (shared) wicket resource which can be
filtered,
so it only is accessible when the right flag is set in OurWebSession?
Or would you suggest to write an own javax.servlet.Filter which does this
flag-check and redirects internally to a hidden location which then is
send
to the client by Tomcat when the right flag is set?
Thanks in advance.
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote:
Hi Igor,
yep, DownloadLinks will block because requests to the same page are
serialized.
Sorry, I don't understand, why links to downloadable resources should
be
blocking or serialized. Usually downloads are the larger parts of an
application and hence should never lock the application.
because this is how this component is designed to work. if you dont like
it
you can build your own that doesnt block.
to work around it register a shared resource or create a servlet that
can
stream the file (resoureces in wicket are not serialized), then create
a
link component that can build a download url.
Well, I guess, we can't use a servlet, because wicket is registered to
/*, so it will get everything.
wicket is a filter, so even though it is mapped to /* it will let urls
that
are not wicket urls pass through. how do you think it lets you download
static images...
so if you map your wicket filter on /* and the servlet on /download and
yo
have no download mount in wicket the filter will let /download/*
requests
go to the servlet.
-igor
Could you please give some more hints
about shared resources? I've tried to search
http://cwiki.apache.org/WICKET/ without luck.
Alternatively, is it possible to complete shut off the serialization
(which seems to cause this and maybe even other blocking problems)?
--
Best regards
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
Igor Vaynberg wrote:
yep, DownloadLinks will block because requests to the same page are
serialized.
to work around it register a shared resource or create a servlet that
can
stream the file (resoureces in wicket are not serialized), then create
a
link component that can build a download url.
-igor
On 8/20/07, Thomas Singer [EMAIL PROTECTED] wrote:
Hi,
We are using Wicket 1.3 beta 2 running in Tomcat and have a couple of
DownloadLinks on a page (created with 'new DownloadPage(parameters)')
for
larger files (a couple of MB). I open different tabs of the same page
in
Opera and click these download links, so the downloads should happen
in
parallel. Unfortunately, the web-application seems to hang until the
previous files were completely downloaded. Even normal pages do not
show
up.
This does not happen for other websites (so our internet connection
couldn't
be the reason) and not for the same project with
old-JSP-/Servlet-technology
at a different server running in the same version of Tomcat.
Is this a known problem? How to work around?
--
Best regards,
Thomas Singer
_
SyyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
Should I report a bug in JIRA?
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
hm, this looks like an old bug. johan didnt we fix this a while ago?
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
inside shared
resource you can simply call Session.get() to get to wicket session.
Unfortunately, it looks like this is not possible, because I'm getting
following exception:
java.lang.IllegalStateException: you can only locate or create sessions
in the context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(
DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(
WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
you can register a shared resource and build a url for it. inside shared
resource you can simply call Session.get() to get to wicket session.
see application.getsharedresources();
alternatively you can extend WicketSessionFilter which will also allow
you
to perform Session.get()
-igor
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote:
Disclaimer: I'm not experienced with filters or wicket resources.
Is it possible to create a (shared) wicket resource which can be
filtered,
so it only is accessible when the right flag is set in OurWebSession?
Or would you suggest to write an own javax.servlet.Filter which does
this
flag-check and redirects internally to a hidden location which then is
send
to the client by Tomcat when the right flag is set?
Thanks in advance.
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote:
Hi Igor,
yep, DownloadLinks will block because requests to the same page are
serialized.
Sorry, I don't understand, why links to downloadable resources should
be
blocking or serialized. Usually downloads are the larger parts of an
application and hence should never lock the application.
because this is how this component is designed to work. if you dont
like
it
you can build your own that doesnt block.
to work around it register a shared resource or create a servlet that
can
stream the file (resoureces in wicket are not serialized), then
create
a
link component that can build a download url.
Well, I guess, we can't use a servlet, because wicket is registered
to
/*, so it will get everything.
wicket is a filter, so even though it is mapped to /* it will let urls
that
are not wicket urls pass through. how do you think it lets you
download
static images...
so if you map your wicket filter on /* and the servlet on /download
and
yo
have no download mount in wicket the filter will let /download/*
requests
go to the servlet.
-igor
Could you please give some more hints
about shared resources? I've tried to search
http://cwiki.apache.org/WICKET/ without luck.
Alternatively, is it possible to complete shut off the serialization
(which seems to cause this and maybe even other blocking problems)?
--
Best regards
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
Igor Vaynberg wrote:
yep, DownloadLinks will block because requests to the same page are
serialized.
to work around it register a shared resource or create a servlet
that
can
stream the file (resoureces in wicket are not serialized), then
create
a
link component that can build a download url.
-igor
On 8/20/07, Thomas Singer [EMAIL PROTECTED] wrote:
Hi,
We are using Wicket 1.3 beta 2 running in Tomcat and have a couple
of
DownloadLinks on a page (created with 'new
DownloadPage(parameters)')
for
larger files (a couple of MB). I open different tabs of the same
page
in
Opera and click these download links, so the downloads should
happen
in
parallel. Unfortunately, the web-application seems to hang until
the
previous files were completely downloaded. Even normal pages do not
show
up.
This does not happen for other websites (so our internet connection
couldn't
be the reason) and not for the same project with
old-JSP-/Servlet-technology
at a different server running in the same version of Tomcat.
Is this a known problem? How to work around?
--
Best regards,
Re: DownloadLink hanging
yep
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
Should I report a bug in JIRA?
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
hm, this looks like an old bug. johan didnt we fix this a while ago?
-igor
On 8/23/07, Thomas Singer [EMAIL PROTECTED] wrote:
inside shared
resource you can simply call Session.get() to get to wicket session.
Unfortunately, it looks like this is not possible, because I'm getting
following exception:
java.lang.IllegalStateException: you can only locate or create
sessions
in the context of a request cycle
org.apache.wicket.Session.findOrCreate(Session.java:250)
org.apache.wicket.Session.get(Session.java:279)
com.syntevo.hpsmart.DownloadResource.getResourceStream(
DownloadResource.java:18)
org.apache.wicket.protocol.http.WicketFilter.getLastModified(
WicketFilter.java:708)
org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:122)
Our resource code looks like this:
final class DownloadResource extends Resource {
public IResourceStream getResourceStream() {
final OurSession session = (OurSession)Session.get();
if (session == null) {
return null;
}
final File file = session.getFileToDownload();
if (file == null) {
return null;
}
return new MyFileResourceStream(file);
}
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
you can register a shared resource and build a url for it. inside
shared
resource you can simply call Session.get() to get to wicket session.
see application.getsharedresources();
alternatively you can extend WicketSessionFilter which will also allow
you
to perform Session.get()
-igor
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote:
Disclaimer: I'm not experienced with filters or wicket resources.
Is it possible to create a (shared) wicket resource which can be
filtered,
so it only is accessible when the right flag is set in OurWebSession?
Or would you suggest to write an own javax.servlet.Filter which does
this
flag-check and redirects internally to a hidden location which then
is
send
to the client by Tomcat when the right flag is set?
Thanks in advance.
--
Best regards,
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
www.syntevo.com
Igor Vaynberg wrote:
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote:
Hi Igor,
yep, DownloadLinks will block because requests to the same page
are
serialized.
Sorry, I don't understand, why links to downloadable resources
should
be
blocking or serialized. Usually downloads are the larger parts of
an
application and hence should never lock the application.
because this is how this component is designed to work. if you dont
like
it
you can build your own that doesnt block.
to work around it register a shared resource or create a servlet
that
can
stream the file (resoureces in wicket are not serialized), then
create
a
link component that can build a download url.
Well, I guess, we can't use a servlet, because wicket is registered
to
/*, so it will get everything.
wicket is a filter, so even though it is mapped to /* it will let
urls
that
are not wicket urls pass through. how do you think it lets you
download
static images...
so if you map your wicket filter on /* and the servlet on /download
and
yo
have no download mount in wicket the filter will let /download/*
requests
go to the servlet.
-igor
Could you please give some more hints
about shared resources? I've tried to search
http://cwiki.apache.org/WICKET/ without luck.
Alternatively, is it possible to complete shut off the
serialization
(which seems to cause this and maybe even other blocking problems)?
--
Best regards
Thomas Singer
_
SyntEvo GmbH
Brunnfeld 11
83404 Ainring
Germany
Igor Vaynberg wrote:
yep, DownloadLinks will block because requests to the same page
are
serialized.
to work around it register a shared resource or create a servlet
that
can
stream the file (resoureces in wicket are not serialized), then
create
a
link component that can build a download url.
-igor
On 8/20/07, Thomas Singer [EMAIL PROTECTED] wrote:
Hi,
We are using Wicket 1.3 beta 2 running in Tomcat and have a
couple
of
DownloadLinks on a page (created with 'new
DownloadPage(parameters)')
for
larger files (a couple of MB). I open different tabs of the same
page
in
Opera and click these download links, so the downloads should
happen
in
parallel. Unfortunately, the web-application seems to hang until
the
previous files were
Re: DownloadLink hanging
you can register a shared resource and build a url for it. inside shared resource you can simply call Session.get() to get to wicket session. see application.getsharedresources(); alternatively you can extend WicketSessionFilter which will also allow you to perform Session.get() -igor On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote: Disclaimer: I'm not experienced with filters or wicket resources. Is it possible to create a (shared) wicket resource which can be filtered, so it only is accessible when the right flag is set in OurWebSession? Or would you suggest to write an own javax.servlet.Filter which does this flag-check and redirects internally to a hidden location which then is send to the client by Tomcat when the right flag is set? Thanks in advance. -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com Igor Vaynberg wrote: On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote: Hi Igor, yep, DownloadLinks will block because requests to the same page are serialized. Sorry, I don't understand, why links to downloadable resources should be blocking or serialized. Usually downloads are the larger parts of an application and hence should never lock the application. because this is how this component is designed to work. if you dont like it you can build your own that doesnt block. to work around it register a shared resource or create a servlet that can stream the file (resoureces in wicket are not serialized), then create a link component that can build a download url. Well, I guess, we can't use a servlet, because wicket is registered to /*, so it will get everything. wicket is a filter, so even though it is mapped to /* it will let urls that are not wicket urls pass through. how do you think it lets you download static images... so if you map your wicket filter on /* and the servlet on /download and yo have no download mount in wicket the filter will let /download/* requests go to the servlet. -igor Could you please give some more hints about shared resources? I've tried to search http://cwiki.apache.org/WICKET/ without luck. Alternatively, is it possible to complete shut off the serialization (which seems to cause this and maybe even other blocking problems)? -- Best regards Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany Igor Vaynberg wrote: yep, DownloadLinks will block because requests to the same page are serialized. to work around it register a shared resource or create a servlet that can stream the file (resoureces in wicket are not serialized), then create a link component that can build a download url. -igor On 8/20/07, Thomas Singer [EMAIL PROTECTED] wrote: Hi, We are using Wicket 1.3 beta 2 running in Tomcat and have a couple of DownloadLinks on a page (created with 'new DownloadPage(parameters)') for larger files (a couple of MB). I open different tabs of the same page in Opera and click these download links, so the downloads should happen in parallel. Unfortunately, the web-application seems to hang until the previous files were completely downloaded. Even normal pages do not show up. This does not happen for other websites (so our internet connection couldn't be the reason) and not for the same project with old-JSP-/Servlet-technology at a different server running in the same version of Tomcat. Is this a known problem? How to work around? -- Best regards, Thomas Singer _ SyyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote: Hi Igor, yep, DownloadLinks will block because requests to the same page are serialized. Sorry, I don't understand, why links to downloadable resources should be blocking or serialized. Usually downloads are the larger parts of an application and hence should never lock the application. because this is how this component is designed to work. if you dont like it you can build your own that doesnt block. to work around it register a shared resource or create a servlet that can stream the file (resoureces in wicket are not serialized), then create a link component that can build a download url. Well, I guess, we can't use a servlet, because wicket is registered to /*, so it will get everything. wicket is a filter, so even though it is mapped to /* it will let urls that are not wicket urls pass through. how do you think it lets you download static images... so if you map your wicket filter on /* and the servlet on /download and yo have no download mount in wicket the filter will let /download/* requests go to the servlet. -igor Could you please give some more hints about shared resources? I've tried to search http://cwiki.apache.org/WICKET/ without luck. Alternatively, is it possible to complete shut off the serialization (which seems to cause this and maybe even other blocking problems)? -- Best regards Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany Igor Vaynberg wrote: yep, DownloadLinks will block because requests to the same page are serialized. to work around it register a shared resource or create a servlet that can stream the file (resoureces in wicket are not serialized), then create a link component that can build a download url. -igor On 8/20/07, Thomas Singer [EMAIL PROTECTED] wrote: Hi, We are using Wicket 1.3 beta 2 running in Tomcat and have a couple of DownloadLinks on a page (created with 'new DownloadPage(parameters)') for larger files (a couple of MB). I open different tabs of the same page in Opera and click these download links, so the downloads should happen in parallel. Unfortunately, the web-application seems to hang until the previous files were completely downloaded. Even normal pages do not show up. This does not happen for other websites (so our internet connection couldn't be the reason) and not for the same project with old-JSP-/Servlet-technology at a different server running in the same version of Tomcat. Is this a known problem? How to work around? -- Best regards, Thomas Singer _ SyyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DownloadLink hanging
Disclaimer: I'm not experienced with filters or wicket resources. Is it possible to create a (shared) wicket resource which can be filtered, so it only is accessible when the right flag is set in OurWebSession? Or would you suggest to write an own javax.servlet.Filter which does this flag-check and redirects internally to a hidden location which then is send to the client by Tomcat when the right flag is set? Thanks in advance. -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com Igor Vaynberg wrote: On 8/21/07, Thomas Singer [EMAIL PROTECTED] wrote: Hi Igor, yep, DownloadLinks will block because requests to the same page are serialized. Sorry, I don't understand, why links to downloadable resources should be blocking or serialized. Usually downloads are the larger parts of an application and hence should never lock the application. because this is how this component is designed to work. if you dont like it you can build your own that doesnt block. to work around it register a shared resource or create a servlet that can stream the file (resoureces in wicket are not serialized), then create a link component that can build a download url. Well, I guess, we can't use a servlet, because wicket is registered to /*, so it will get everything. wicket is a filter, so even though it is mapped to /* it will let urls that are not wicket urls pass through. how do you think it lets you download static images... so if you map your wicket filter on /* and the servlet on /download and yo have no download mount in wicket the filter will let /download/* requests go to the servlet. -igor Could you please give some more hints about shared resources? I've tried to search http://cwiki.apache.org/WICKET/ without luck. Alternatively, is it possible to complete shut off the serialization (which seems to cause this and maybe even other blocking problems)? -- Best regards Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany Igor Vaynberg wrote: yep, DownloadLinks will block because requests to the same page are serialized. to work around it register a shared resource or create a servlet that can stream the file (resoureces in wicket are not serialized), then create a link component that can build a download url. -igor On 8/20/07, Thomas Singer [EMAIL PROTECTED] wrote: Hi, We are using Wicket 1.3 beta 2 running in Tomcat and have a couple of DownloadLinks on a page (created with 'new DownloadPage(parameters)') for larger files (a couple of MB). I open different tabs of the same page in Opera and click these download links, so the downloads should happen in parallel. Unfortunately, the web-application seems to hang until the previous files were completely downloaded. Even normal pages do not show up. This does not happen for other websites (so our internet connection couldn't be the reason) and not for the same project with old-JSP-/Servlet-technology at a different server running in the same version of Tomcat. Is this a known problem? How to work around? -- Best regards, Thomas Singer _ SyyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
DownloadLink hanging
Hi, We are using Wicket 1.3 beta 2 running in Tomcat and have a couple of DownloadLinks on a page (created with 'new DownloadPage(parameters)') for larger files (a couple of MB). I open different tabs of the same page in Opera and click these download links, so the downloads should happen in parallel. Unfortunately, the web-application seems to hang until the previous files were completely downloaded. Even normal pages do not show up. This does not happen for other websites (so our internet connection couldn't be the reason) and not for the same project with old-JSP-/Servlet-technology at a different server running in the same version of Tomcat. Is this a known problem? How to work around? -- Best regards, Thomas Singer _ SyntEvo GmbH Brunnfeld 11 83404 Ainring Germany www.syntevo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
