[jetty-users] [Jetty 9.3.x] java.lang.IllegalStateException: WRITER, when using RedirectRegexRule in jetty.xml

Discussion:

Neehal Shaikh

2018-05-16 10:03:30 UTC

Hi,
I see the below exception when I try to load my application(https://domain/) in the browser.

java.lang.IllegalStateException: WRITER
at org.eclipse.jetty.server.Response.getOutputStream(Response.java:862) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RedirectRegexRule.apply(RedirectRegexRule.java:99) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RegexRule.matchAndApply(RegexRule.java:75) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.apply(RuleContainer.java:169) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.matchAndApply(RuleContainer.java:149) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:330) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:104) [216:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.Server.handle(Server.java:534) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:251) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at java.lang.Thread.run(Thread.java:748) [?:?]

I have my app deployed on a certain path 'https://domain/xyz'.
Now, I have a added a Rule to the RewriteHandler in my jetty.xml, as below: which redirects '/' to '/xyz'
<Call name="addRule">
<Arg>
<New class="org.eclipse.jetty.rewrite.handler.RedirectRegexRule">
<Set name="regex">^/$</Set>
<Set name="location">/xyz</Set>
</New>
</Arg>
</Call>

I see above exception when I try to hit https://domain/

I checked the class org.eclipse.jetty.rewrite.handler.RedirectRegexRule(jetty 9.3.21),
where the problem is reported at(line number 99).

85 @Override
86 protected String apply(String target, HttpServletRequest request, HttpServletResponse response, Matcher matcher)
87 throws IOException
88 {
89 target=_location;
90 for (int g=1;g<=matcher.groupCount();g++)
91 {
92 String group = matcher.group(g);
93 target=target.replaceAll("\\$"+g,group);
94 }
95
96 target = response.encodeRedirectURL(target);
97 response.setHeader("Location",RedirectUtil.toRedirectURL(request,target));
98 response.setStatus(_statusCode);
99 response.getOutputStream().flush(); // no output / content
100 response.getOutputStream().close();
101 return target;
102 }

Jetty 8.x didn't have this problem because it did the following in the 'apply'
method. It just redirected the response.

@Override
protected String apply(String target, HttpServletRequest request,
HttpServletResponse response, Matcher matcher)
throws IOException
{
target=_replacement;
for (int g=1;g<=matcher.groupCount();g++)
{
String group = matcher.group(g);
target=target.replaceAll("\\$"+g,group);
}

response.sendRedirect(response.encodeRedirectURL(target));
return target;
}

I am using karaf 4.1.5 container with has jetty v9.3.21.

Is there something we could do to fix this one? or get around it?

Regards,
Neehal

Joakim Erdfelt

2018-05-16 10:43:14 UTC

Permalink

Have you considered MovedContextHandler instead?

https://www.eclipse.org/jetty/documentation/current/moved-context-handler.html

Post by Neehal Shaikh
Hi,
I see the below exception when I try to load my application(
https://domain/) in the browser.
java.lang.IllegalStateException: WRITER
at org.eclipse.jetty.server.Response.getOutputStream(
Response.java:862) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RedirectRegexRule.
apply(RedirectRegexRule.java:99) [189:org.eclipse.jetty.
rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RegexRule.
matchAndApply(RegexRule.java:75) [189:org.eclipse.jetty.
rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.apply(
RuleContainer.java:169) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.
matchAndApply(RuleContainer.java:149) [189:org.eclipse.
jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(
RewriteHandler.java:330) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.
JettyServerHandlerCollection.handle(JettyServerHandlerCollection.
java:104) [216:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(
HandlerWrapper.java:134) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.Server.handle(Server.java:534)
[192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.handle(
HttpChannel.java:333) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.onFillable(
HttpConnection.java:251) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(
AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(
FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(
SslConnection.java:251) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(
AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(
FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(
SelectChannelEndPoint.java:93) [184:org.eclipse.jetty.io:9.
3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.
303) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.
produceConsume(ExecuteProduceConsume.java:148) [195:org.eclipse.jetty.
util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.
136) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool.
runJob(QueuedThreadPool.java:671) [195:org.eclipse.jetty.
util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(
QueuedThreadPool.java:589) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at java.lang.Thread.run(Thread.java:748) [?:?]
I have my app deployed on a certain path 'https://domain/xyz'.
Now, I have a added a Rule to the RewriteHandler in my jetty.xml, as
below: which redirects '/' to '/xyz'
<Call name="addRule">
<Arg>
<New class="org.eclipse.jetty.rewrite.handler.
RedirectRegexRule">
<Set name="regex">^/$</Set>
<Set name="location">/xyz</Set>
</New>
</Arg>
</Call>
I see above exception when I try to hit https://domain/
I checked the class org.eclipse.jetty.rewrite.handler.RedirectRegexRule(jetty 9.3.21),
where the problem is reported at(line number 99).
86 protected String apply(String target, HttpServletRequest
request, HttpServletResponse response, Matcher matcher)
87 throws IOException
88 {
89 target=_location;
90 for (int g=1;g<=matcher.groupCount();g++)
91 {
92 String group = matcher.group(g);
93 target=target.replaceAll("\\$"+g,group);
94 }
95
96 target = response.encodeRedirectURL(target);
97 response.setHeader("Location",RedirectUtil.toRedirectURL(
request,target));
98 response.setStatus(_statusCode);
99 response.getOutputStream().flush(); // no output / content
100 response.getOutputStream().close();
101 return target;
102 }
Jetty 8.x didn't have this problem because it did the following in the 'apply'
method. It just redirected the response.
@Override
protected String apply(String target, HttpServletRequest request,
HttpServletResponse response, Matcher matcher)
throws IOException
{
target=_replacement;
for (int g=1;g<=matcher.groupCount();g++)
{
String group = matcher.group(g);
target=target.replaceAll("\\$"+g,group);
}
response.sendRedirect(response.encodeRedirectURL(target));
return target;
}
I am using karaf 4.1.5 container with has jetty v9.3.21.
Is there something we could do to fix this one? or get around it?
Regards,
Neehal
_______________________________________________
jetty-users mailing list
To change your delivery options, retrieve your password, or unsubscribe
from this list, visit
https://dev.eclipse.org/mailman/listinfo/jetty-users

Neehal Shaikh

2018-05-17 07:35:00 UTC

Permalink

Hi Joakim,

I tried adding the MovedContextHandler to the server config as below:

<Get name="handler">
<Call name="addHandler">
<Arg>
<New class="org.eclipse.jetty.server.handler.MovedContextHandler">
<Set name="contextPath">/</Set>
<Set name="newContextURL">/xyz</Set>
<Set name="permanent">true</Set>
<Set name="discardPathInfo">false</Set>
<Set name="discardQuery">false</Set>
</New>
</Arg>
</Call>
</Get>

I see the context handler taking effect when I start the server.
Started ***@6216e9d3{/,null,AVAILABLE}

But I donât see the context getting moved to âhttps://domain/xyzâ when I try to hit âhttps://domain/â. I see a warning though.
Can't find the request for https://domain/'s Observer

Regards,
Neehal

From: jetty-users-***@eclipse.org <jetty-users-***@eclipse.org> On Behalf Of Joakim Erdfelt
Sent: Wednesday, May 16, 2018 4:13 PM
To: JETTY user mailing list <jetty-***@eclipse.org>
Subject: Re: [jetty-users] [Jetty 9.3.x] java.lang.IllegalStateException: WRITER, when using RedirectRegexRule in jetty.xml

Have you considered MovedContextHandler instead?

https://www.eclipse.org/jetty/documentation/current/moved-context-handler.html

Joakim Erdfelt / ***@webtide.com<mailto:***@webtide.com>

On Wed, May 16, 2018 at 5:03 AM, Neehal Shaikh <***@actiance.com<mailto:***@actiance.com>> wrote:
Hi,
I see the below exception when I try to load my application(https://domain/) in the browser.

java.lang.IllegalStateException: WRITER
at org.eclipse.jetty.server.Response.getOutputStream(Response.java:862) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RedirectRegexRule.apply(RedirectRegexRule.java:99) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RegexRule.matchAndApply(RegexRule.java:75) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.apply(RuleContainer.java:169) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.matchAndApply(RuleContainer.java:149) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:330) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:104) [216:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.Server.handle(Server.java:534) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.FillInterest.fillable(FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:251) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.FillInterest.fillable(FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [184:org.eclipse.jetty.io:9<http://org.eclipse.jetty.io:9>.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at java.lang.Thread.run(Thread.java:748) [?:?]

I have my app deployed on a certain path 'https://domain/xyz'.
Now, I have a added a Rule to the RewriteHandler in my jetty.xml, as below: which redirects '/' to '/xyz'
<Call name="addRule">
<Arg>
<New class="org.eclipse.jetty.rewrite.handler.RedirectRegexRule">
<Set name="regex">^/$</Set>
<Set name="location">/xyz</Set>
</New>
</Arg>
</Call>

I see above exception when I try to hit https://domain/

I checked the class org.eclipse.jetty.rewrite.handler.RedirectRegexRule(jetty 9.3.21),
where the problem is reported at(line number 99).

85 @Override
86 protected String apply(String target, HttpServletRequest request, HttpServletResponse response, Matcher matcher)
87 throws IOException
88 {
89 target=_location;
90 for (int g=1;g<=matcher.groupCount();g++)
91 {
92 String group = matcher.group(g);
93 target=target.replaceAll("\\$"+g,group);
94 }
95
96 target = response.encodeRedirectURL(target);
97 response.setHeader("Location",RedirectUtil.toRedirectURL(request,target));
98 response.setStatus(_statusCode);
99 response.getOutputStream().flush(); // no output / content
100 response.getOutputStream().close();
101 return target;
102 }

Jetty 8.x didn't have this problem because it did the following in the 'apply'
method. It just redirected the response.

@Override
protected String apply(String target, HttpServletRequest request,
HttpServletResponse response, Matcher matcher)
throws IOException
{
target=_replacement;
for (int g=1;g<=matcher.groupCount();g++)
{
String group = matcher.group(g);
target=target.replaceAll("\\$"+g,group);
}

response.sendRedirect(response.encodeRedirectURL(target));
return target;
}

I am using karaf 4.1.5 container with has jetty v9.3.21.

Is there something we could do to fix this one? or get around it?

Regards,
Neehal

_______________________________________________
jetty-users mailing list
jetty-***@eclipse.org<mailto:jetty-***@eclipse.org>
To change your delivery options, retrieve your password, or unsubscribe from this list, visit
https://dev.eclipse.org/mailman/listinfo/jetty-users

Joakim Erdfelt

2018-05-17 10:17:52 UTC

Permalink

Make sure that your MovedContextHandler is the first handler in your server
handler list/collection (or close to first).

Post by Neehal Shaikh
Hi Joakim,
<Get name="handler">
<Call name="addHandler">
<Arg>
<New class="org.eclipse.jetty.server.handler.MovedContextHandler">
<Set name="contextPath">/</Set>
<Set name="newContextURL">/xyz</Set>
<Set name="permanent">true</Set>
<Set name="discardPathInfo">false</Set>
<Set name="discardQuery">false</Set>
</New>
</Arg>
</Call>
</Get>
I see the context handler taking effect when I start the server.
But I donât see the context getting moved to âhttps://domain/xyzâ when I
try to hit âhttps://domain/â. I see a warning though.
Can't find the request for https://domain/'s Observer
Regards,
Neehal
Behalf Of *Joakim Erdfelt
*Sent:* Wednesday, May 16, 2018 4:13 PM
WRITER, when using RedirectRegexRule in jetty.xml
Have you considered MovedContextHandler instead?
https://www.eclipse.org/jetty/documentation/current/moved-
context-handler.html
Hi,
I see the below exception when I try to load my application(
https://domain/) in the browser.
java.lang.IllegalStateException: WRITER
at org.eclipse.jetty.server.Response.getOutputStream(
Response.java:862) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RedirectRegexRule.
apply(RedirectRegexRule.java:99) [189:org.eclipse.jetty.
rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RegexRule.
matchAndApply(RegexRule.java:75) [189:org.eclipse.jetty.
rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.apply(
RuleContainer.java:169) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.
matchAndApply(RuleContainer.java:149) [189:org.eclipse.
jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(
RewriteHandler.java:330) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.
JettyServerHandlerCollection.handle(JettyServerHandlerCollection.
java:104) [216:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(
HandlerWrapper.java:134) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.Server.handle(Server.java:534)
[192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.handle(
HttpChannel.java:333) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.onFillable(
HttpConnection.java:251) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(
AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(
FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(
SslConnection.java:251) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(
AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(
FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(
SelectChannelEndPoint.java:93) [184:org.eclipse.jetty.io:9.
3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.
303) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.
produceConsume(ExecuteProduceConsume.java:148) [195:org.eclipse.jetty.
util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.
136) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool.
runJob(QueuedThreadPool.java:671) [195:org.eclipse.jetty.
util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(
QueuedThreadPool.java:589) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at java.lang.Thread.run(Thread.java:748) [?:?]
I have my app deployed on a certain path 'https://domain/xyz'.
Now, I have a added a Rule to the RewriteHandler in my jetty.xml, as
below: which redirects '/' to '/xyz'
<Call name="addRule">
<Arg>
<New class="org.eclipse.jetty.rewrite.handler.
RedirectRegexRule">
<Set name="regex">^/$</Set>
<Set name="location">/xyz</Set>
</New>
</Arg>
</Call>
I see above exception when I try to hit https://domain/
I checked the class org.eclipse.jetty.rewrite.handler.RedirectRegexRule(jetty 9.3.21),
where the problem is reported at(line number 99).
86 protected String apply(String target, HttpServletRequest
request, HttpServletResponse response, Matcher matcher)
87 throws IOException
88 {
89 target=_location;
90 for (int g=1;g<=matcher.groupCount();g++)
91 {
92 String group = matcher.group(g);
93 target=target.replaceAll("\\$"+g,group);
94 }
95
96 target = response.encodeRedirectURL(target);
97 response.setHeader("Location",RedirectUtil.toRedirectURL(
request,target));
98 response.setStatus(_statusCode);
99 response.getOutputStream().flush(); // no output / content
100 response.getOutputStream().close();
101 return target;
102 }
Jetty 8.x didn't have this problem because it did the following in the 'apply'
method. It just redirected the response.
@Override
protected String apply(String target, HttpServletRequest request,
HttpServletResponse response, Matcher matcher)
throws IOException
{
target=_replacement;
for (int g=1;g<=matcher.groupCount();g++)
{
String group = matcher.group(g);
target=target.replaceAll("\\$"+g,group);
}
response.sendRedirect(response.encodeRedirectURL(target));
return target;
}
I am using karaf 4.1.5 container with has jetty v9.3.21.
Is there something we could do to fix this one? or get around it?
Regards,
Neehal
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_______________________________________________
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from this list, visit
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Neehal Shaikh

2018-05-17 06:09:26 UTC

Permalink

Thank you a prompt reply,
I shall give that a try and let you know.

Regards,
Neehal.

From: jetty-users-***@eclipse.org <jetty-users-***@eclipse.org> On Behalf Of Joakim Erdfelt
Sent: Wednesday, May 16, 2018 4:13 PM
To: JETTY user mailing list <jetty-***@eclipse.org>
Subject: Re: [jetty-users] [Jetty 9.3.x] java.lang.IllegalStateException: WRITER, when using RedirectRegexRule in jetty.xml

Have you considered MovedContextHandler instead?

https://www.eclipse.org/jetty/documentation/current/moved-context-handler.html

Joakim Erdfelt / ***@webtide.com<mailto:***@webtide.com>

On Wed, May 16, 2018 at 5:03 AM, Neehal Shaikh <***@actiance.com<mailto:***@actiance.com>> wrote:
Hi,
I see the below exception when I try to load my application(https://domain/) in the browser.

java.lang.IllegalStateException: WRITER
at org.eclipse.jetty.server.Response.getOutputStream(Response.java:862) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RedirectRegexRule.apply(RedirectRegexRule.java:99) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RegexRule.matchAndApply(RegexRule.java:75) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.apply(RuleContainer.java:169) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RuleContainer.matchAndApply(RuleContainer.java:149) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:330) [189:org.eclipse.jetty.rewrite:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:104) [216:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.Server.handle(Server.java:534) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [192:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.FillInterest.fillable(FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:251) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.FillInterest.fillable(FillInterest.java:108) [184:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io<http://org.eclipse.jetty.io>.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [184:org.eclipse.jetty.io:9<http://org.eclipse.jetty.io:9>.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [195:org.eclipse.jetty.util:9.3.21.v20170918]
at java.lang.Thread.run(Thread.java:748) [?:?]

I have my app deployed on a certain path 'https://domain/xyz'.
Now, I have a added a Rule to the RewriteHandler in my jetty.xml, as below: which redirects '/' to '/xyz'
<Call name="addRule">
<Arg>
<New class="org.eclipse.jetty.rewrite.handler.RedirectRegexRule">
<Set name="regex">^/$</Set>
<Set name="location">/xyz</Set>
</New>
</Arg>
</Call>

I see above exception when I try to hit https://domain/

I checked the class org.eclipse.jetty.rewrite.handler.RedirectRegexRule(jetty 9.3.21),
where the problem is reported at(line number 99).

85 @Override
86 protected String apply(String target, HttpServletRequest request, HttpServletResponse response, Matcher matcher)
87 throws IOException
88 {
89 target=_location;
90 for (int g=1;g<=matcher.groupCount();g++)
91 {
92 String group = matcher.group(g);
93 target=target.replaceAll("\\$"+g,group);
94 }
95
96 target = response.encodeRedirectURL(target);
97 response.setHeader("Location",RedirectUtil.toRedirectURL(request,target));
98 response.setStatus(_statusCode);
99 response.getOutputStream().flush(); // no output / content
100 response.getOutputStream().close();
101 return target;
102 }

Jetty 8.x didn't have this problem because it did the following in the 'apply'
method. It just redirected the response.

@Override
protected String apply(String target, HttpServletRequest request,
HttpServletResponse response, Matcher matcher)
throws IOException
{
target=_replacement;
for (int g=1;g<=matcher.groupCount();g++)
{
String group = matcher.group(g);
target=target.replaceAll("\\$"+g,group);
}

response.sendRedirect(response.encodeRedirectURL(target));
return target;
}

I am using karaf 4.1.5 container with has jetty v9.3.21.

Is there something we could do to fix this one? or get around it?

Regards,
Neehal

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jetty-users mailing list
jetty-***@eclipse.org<mailto:jetty-***@eclipse.org>
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