Quarkus rest client not respecting -Dhttp.proxyHost -Dhttp.proxyPort proxy options

Question

I want to specify my Quarkus application (v2.8.3.Final) to use an HTTP proxy without changing any code

To attempt this I pass the -Dhttp.proxyHost and -Dhttp.proxyPort options to the terminal, like this:

./mvnw quarkus:dev -Dquarkus.http.host=0.0.0.0 -Dquarkus.http.port=9000 -Ddebug=9001 -Dhttp.proxyHost=localhost -Dhttp.proxyPort=6969

• This works for other Java applications that are based on Jersey and Tomcat
• This works on another Quarkus application as well, (created at another point, but I have ensured that the Quarkus versions are the same, v2.8.3.Final in pom.xml)

Comparing the working quarkus app and the problematic one

To compare the working quarkus application (A), and the other (B) I have implemented a resource that sends a request to http://google.com

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.core.MediaType;

   .
   .
   .

    @GET
    @Path("/google")
    @Produces(MediaType.TEXT_PLAIN)
    public String google() {
        Client client = ClientBuilder.newClient();
        return client.target("http://www.google.com")
                     .request(MediaType.TEXT_PLAIN)
                     .get()
                     .readEntity(String.class);
    }

and I have ensured that the Quarkus versions are the same. Here is a minimal snippet from pom.xml

  <properties>
    <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
    <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
    <quarkus.platform.version>2.8.3.Final</quarkus.platform.version>
  </properties>

Application A successfully passes its requests to the proxy server, while B wont. Both applications are very similiar when comparing their pom.xml files and application.properties files. I am struggling to point out relevant differences. I would like to at least get some pointers on where I could look to fix this problem.

Other things I have attempted in addition to passing -Dhttp.proxyHost and -Dhttp.proxyPort:

• In application properties, specify

  • org.jboss.resteasy.jaxrs.client.proxy.host=http://localhost,
  • org.jboss.resteasy.jaxrs.client.proxy.port=6969
  • result: requests not going through proxy
  • source: Quarkus / Restclient with proxy configuration

• In application properties, specify

  • quarkus.rest-client.proxy-address=http://localhost:6969,
  • result: requests not going through proxy
  • source: https://quarkus.io/guides/all-config

• In application properties specify client/mp-rest/proxyAddress=http://localhost:6969

  • result: request not going through proxy

• Other ways to pass the system properties -Dhttp.proxyHost and -Dhttp.proxyPort

  • E.g. by setting the environment variable JAVA_TOOL_OPTIONS="-Dhttp.proxyHost -Dhttp.proxyPort"
  • result: requests not going through proxy

• Built and started a docker container with Dockerfile.jvm generated from quarkus (which is included when create a new quarkus project), then setting the env variable HTTP_PROXY=localhost:6969.

  • It simply prints that it passes the -Dhttp.proxyHost and -Dhttp.proxyPort options to the application (what I have done from the beginning)
  • result: requests not going through proxy

System info

• OS: Windows 11, but I do everything within WSL2 (Ubuntu 20.04.3 LTS).
• CPU: Intel Core i7-10850H

Answer 1

Quarkus comes with two REST clients, the old classic version and the newer reactive one. The reactive client has proxy support; the classic does not advertise it. Try to switch to the reactive client.

(copied from comment)