On Mon, Mar 7, 2016 at 5:44 PM, David Kerber <dcker...@verizon.net> wrote:
> On 3/7/2016 5:11 PM, Sean Dawson wrote:
>
>> On Sun, Mar 6, 2016 at 12:48 PM, Sean Dawson <seandawson2...@gmail.com>
>> wrote:
>>
>> Tomcat 8_32
>>> Windows 7
>>> Java 8_51
>>> RestEasy 3.0.11.Final
>>> GWT 2.7.0 (Jetty jetty-9.3.5.v20151012)
>>>
>>> Servlet code makes a RestEasy call to another servlet (same container) -
>>> second servlet sets the 'Warning' HTTP header on response. Would like to
>>> access that in first servlet but when running in Tomcat, that header is
>>> not
>>> included.
>>>
>>> Code to get header in first servlet:
>>>
>>> Object headers = ((ClientResponseFailure)
>>> e).getResponse().getResponseHeaders().get("Warning");
>>>
>>> Also tried: getHeaders(), getStringHeaders(), and getHeaderString().
>>>
>>> When running GWT in superdev mode in IntelliJ (15.0.4) using Jetty, the
>>> above returns a List with one item that contains the warning string.
>>> When
>>> remote debugging Tomcat, that call returns null.
>>>
>>> Added this to web app xml, and also tried Tomcat conf/web.xml...
>>>
>>> <filter>
>>> <filter-name>CorsFilter</filter-name>
>>>
>>> <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
>>> <init-param>
>>> <param-name>cors.exposed.headers</param-name>
>>> <param-value>Warning</param-value>
>>> </init-param>
>>> </filter>
>>> <filter-mapping>
>>> <filter-name>CorsFilter</filter-name>
>>> <url-pattern>/*</url-pattern>
>>> </filter-mapping>
>>>
>>> Also tried cors.allowed.headers.
>>>
>>> Any pointers?
>>>
>>>
>>> Alright, lets try this again. Simple reproducible testcase...
>>
>> - download latest Tomcat 8 for Windows 64-bit zip
>>
>> http://mirrors.ocf.berkeley.edu/apache/tomcat/tomcat-8/v8.0.32/bin/apache-tomcat-8.0.32-windows-x64.zip
>> - extract somewhere
>> - delete everything in webapps folder
>> - build project below, put in webapps folder
>> - go to: http://localhost:8080/one
>> - check response headers... no Warning header
>>
>> ** pom.xml **
>>
>> <project xmlns="http://maven.apache.org/POM/4.0.0";
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
>> xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
>> http://maven.apache.org/maven-v4_0_0.xsd";>
>> <modelVersion>4.0.0</modelVersion>
>>
>> <groupId>test</groupId>
>> <artifactId>tcTest</artifactId>
>> <packaging>war</packaging>
>> <version>1.0-SNAPSHOT</version>
>>
>> <name>tcTest Maven Webapp</name>
>> <url>http://maven.apache.org</url>
>>
>> <dependencies>
>> <dependency>
>> <groupId>org.glassfish</groupId>
>> <artifactId>javax.servlet</artifactId>
>> <version>3.1.1</version>
>> </dependency>
>> <dependency>
>> <groupId>org.jboss.resteasy</groupId>
>> <artifactId>resteasy-client</artifactId>
>> <version>3.0.11.Final</version>
>> </dependency>
>> </dependencies>
>>
>
> If you're adding Maven, Glassfish and JBoss, you're adding a LOT of
> complexity to your "simple" reproducible! I've never used any of them, so
> would have no hope of reproducing your issue. And there's a fair chance
> that it has nothing to do with Tomcat anyway, given all the other stuff
> around it...
>
>
I could remove JBoss from the equation - and maven, although I'm pretty
sure that's not adding much complexity. If I run it on jetty instead of
tomcat, it works fine. So I'm leaning toward Tomcat (or something extra I
need to do for Tomcat) as the issue.
>
>
>> <build>
>> <finalName>ROOT</finalName>
>> </build>
>> </project>
>>
>>
>> ** web.xml **
>>
>>
>> <!DOCTYPE web-app PUBLIC
>> "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
>> "http://java.sun.com/dtd/web-app_2_3.dtd"; >
>>
>> <web-app>
>> <display-name>Archetype Created Web Application</display-name>
>>
>> <servlet>
>> <servlet-name>One</servlet-name>
>> <servlet-class>pkg.ServletOne</servlet-class>
>> </servlet>
>>
>> <servlet-mapping>
>> <servlet-name>One</servlet-name>
>> <url-pattern>/one/*</url-pattern>
>> </servlet-mapping>
>>
>> <servlet>
>> <servlet-name>Two</servlet-name>
>> <servlet-class>pkg.ServletTwo</servlet-class>
>> </servlet>
>>
>> <servlet-mapping>
>> <servlet-name>Two</servlet-name>
>> <url-pattern>/two/*</url-pattern>
>> </servlet-mapping>
>> </web-app>
>>
>>
>> ** index.html **
>>
>>
>> <html>
>> <body>
>> <h2>Hello World!</h2>
>> </body>
>> </html>
>>
>>
>> ** Caller interface **
>>
>>
>> package pkg;
>>
>> import javax.ws.rs.GET;
>> import javax.ws.rs.Path;
>>
>> public interface Caller
>> {
>> @GET
>> @Path("two")
>> String makeCall();
>> }
>>
>>
>>
>> ** Servlet one **
>>
>>
>> package pkg;
>>
>> import java.io.IOException;
>>
>> import javax.servlet.ServletException;
>> import javax.servlet.http.HttpServlet;
>> import javax.servlet.http.HttpServletRequest;
>> import javax.servlet.http.HttpServletResponse;
>> import javax.ws.rs.core.MediaType;
>>
>> import org.jboss.resteasy.client.ProxyBuilder;
>>
>> public class ServletOne extends HttpServlet
>> {
>> Caller caller;
>>
>> @Override
>> public void init() throws ServletException
>> {
>> caller = ProxyBuilder.build(Caller.class,
>> "http://localhost:8080";).now();
>> }
>>
>> @Override
>> protected void doGet(HttpServletRequest request,
>> HttpServletResponse response) throws ServletException, IOException
>> {
>> String result = caller.makeCall();
>> response.getWriter().println(result);
>> }
>> }
>>
>>
>> ** Servlet two **
>>
>>
>> package pkg;
>>
>> import java.io.IOException;
>>
>> import javax.servlet.ServletException;
>> import javax.servlet.http.HttpServlet;
>> import javax.servlet.http.HttpServletRequest;
>> import javax.servlet.http.HttpServletResponse;
>>
>> public class ServletTwo extends HttpServlet
>> {
>> @Override
>> protected void doGet(HttpServletRequest request,
>> HttpServletResponse response) throws ServletException, IOException
>> {
>> addHeader(response);
>> response.getWriter().println("Ok");
>> }
>>
>> void addHeader(HttpServletResponse response)
>> {
>> response.setHeader("Warning", "This is a warning"); // also
>> tried addHeader()
>> }
>> }
>>
>>
>
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