Spring Boot OAuth Ressource Server Proxy Configuration

Question

I am currently struggeling using a proxy in combination with Spring-Webflux. In other services I always followed this approach, which worked perfectly (proxy configuration is retrieved from standard environment variables):

@Bean
public RestTemplate restTemplate() {
    final RestTemplate restTemplate = new RestTemplate();
    final CloseableHttpClient client = HttpClientBuilder.create().useSystemProperties().build();
    restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory(client));
    return restTemplate;
  }

But now I am trying to setup an OAuth-Ressource-Server using the Spring Oauth-Resource-Server package. This package uses the Spring-Webflux for HTTP(S). The service now tries to fetch the jwk-set from the given uri (proxy needed) and fails because of a connection refused error. Did anyone get a combination of Spring-Webflux/OAuth-Ressource and proxy working?

score 4 · Answer 1 · answered Nov 28 '19 at 08:51

Found out by myself that providing a NimbusReactiveJwtDecoder bean with a correctly configured webclient solves the problem.

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.security.oauth2.jwt.NimbusReactiveJwtDecoder;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.netty.http.client.HttpClient;
import reactor.netty.tcp.ProxyProvider;

@Data
@Component
@Configuration
@ConfigurationProperties(value = "proxy")
public class ProxyConfig {

  private String host;
  private int port;
  private String username;
  private String password;

  @Value("${spring.security.oauth2.resourceserver.jwt.jwk-set-uri}")
  private String jwkSetUri;

  @Bean
  public WebClient webClient(ReactorClientHttpConnector reactorClientHttpConnector) {
    return WebClient.builder().clientConnector(reactorClientHttpConnector).build();
  }

  @Bean
  public HttpClient httpClient() {
    return HttpClient.create()
        .tcpConfiguration(tcpClient ->
            tcpClient.proxy(
                proxy -> proxy.type(ProxyProvider.Proxy.HTTP).host(host)
                    .port(port).username(username)
                    .password(s -> password)));
  }

  @Bean
  ReactorClientHttpConnector reactorClientHttpConnector(HttpClient httpClient) {
    return new ReactorClientHttpConnector(httpClient);
  }

  @Bean
  public NimbusReactiveJwtDecoder nimbusReactiveJwtDecoder(WebClient webClient) {
    return NimbusReactiveJwtDecoder
        .withJwkSetUri(jwkSetUri)
        .webClient(webClient).build();
  }
}

Spring Boot OAuth Ressource Server Proxy Configuration

1 Answers1