Make sure that your MovedContextHandler is the first handler in your server
handler list/collection (or close to first).
Joakim Erdfelt / joa...@webtide.com
On Thu, May 17, 2018 at 2:35 AM, Neehal Shaikh <nsha...@actiance.com> wrote:
> 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 o.e.j.s.h.MovedContextHandler@6216e9d3{/,null,AVAILABLE}
>
>
>
> But I don’t see the context getting moved to ‘https://domain/xyz’ when I
> try to hit ‘https://domain/’. I see a warning though.
>
> Can't find the request for https://domain/'s Observer
>
>
>
> Regards,
>
> Neehal
>
>
>
> *From:* jetty-users-boun...@eclipse.org <jetty-users-boun...@eclipse.org> *On
> Behalf Of *Joakim Erdfelt
> *Sent:* Wednesday, May 16, 2018 4:13 PM
> *To:* JETTY user mailing list <jetty-users@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 / joa...@webtide.com
>
>
>
> On Wed, May 16, 2018 at 5:03 AM, Neehal Shaikh <nsha...@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.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
>
>
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