Getting connection timed out error in microservice - spring-boot

Question

I have built a microservice using Java 8 and SpringBoot 2. From this microservice, I'm trying to consume another REST API service. However, I'm getting the following error on Chrome. I have already disabled the windows firewall and McAfee antivirus firewall but still getting the same error. I can call the REST API directly using the Postman tool but not through my microservice.
Error:-
java.lang.IllegalStateException: The underlying HTTP client completed
without emitting a response.
2018-06-12 15:21:29.300 ERROR 17996 --- [ctor-http-nio-3]
.a.w.r.e.DefaultErrorWebExceptionHandler : Failed to handle request
[GET http://localhost:8080/category/search]
io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection
timed out: no further information: test.usdemo.xyz.com/92.54.41.24:443
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
~[na:1.8.0_171] at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
~[na:1.8.0_171] at
io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:325)
~[netty-transport-4.1.24.Final.jar:4.1.24.Final] at
io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)
~[netty-transport-4.1.24.Final.jar:4.1.24.Final] at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:633)
~[netty-transport-4.1.24.Final.jar:4.1.24.Final] at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
~[netty-transport-4.1.24.Final.jar:4.1.24.Final] at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
~[netty-transport-4.1.24.Final.jar:4.1.24.Final] at
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
~[netty-transport-4.1.24.Final.jar:4.1.24.Final] at
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
~[netty-common-4.1.24.Final.jar:4.1.24.Final] at
java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_171] Caused by:
java.net.ConnectException: Connection timed out: no further
information ... 10 common frames omitted
Controller class:-
#RestController
public class CategorySearchController {
private final CategorySearchService categorySearchService;
#Autowired
public CategorySearchController(CategorySearchService categorySearchService) {
this.categorySearchService = categorySearchService;
}
#GetMapping(path = "/search-category")
public Mono<CategoryResponse> searchCategories(SearchRequest categorySearchRequest){
return categorySearchService
.searchCategories()
.switchIfEmpty(Mono.error(
new EntityNotFoundException("No category matching " + categorySearchRequest.getSearchTerm() + " was found")));
}
}
Service class:-
#Service
public class CategorySearchServiceImpl implements CategorySearchService {
private String baseUrl = "https://demo0954903.mockable.io";
#Override
public Mono<CategoryResponse> searchCategories() {
WebClient webClient = WebClient.create(baseUrl);
return webClient.
get()
.uri("/category-search")
.retrieve()
.bodyToMono(CategoryResponse.class);
}
}

Answer 1

I found the solution for this issue. I need to add the proxy in the webclient as follows:-
private final WebClient webClient;
ReactorClientHttpConnector connector = new ReactorClientHttpConnector(
options -> options.httpProxy(addressSpec -> {
return addressSpec.host(PROXY_HOST).port(PROXY_PORT);
}));
this.webClient = webClientBuilder.baseUrl(BASE_URL).clientConnector(connector).build();