Getting connection timed out error in Java microservice

0
votes

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

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

I'm able to consume the same service successfully using PostMan but not through my microservice.

Please assist to advise on this.

3
springspring-bootpostmanmicroservices
We need some more info. Can you post some code snippets of your service accessing the other service? – mrkernelpanic
[Additional details] I have already disabled the firewall. – Vinod Kumar
we need some code, can you please post the controller you are trying to access and the call you are doing from your microservice? – rick
Without any code, there is little chance that someone can help you out. Please post some code and where exactly does the timeout occur – Urosh T.
Code snippet for reference as follows:- – Vinod Kumar

3 Answers

0
votes

I do not know how to edit my own question above as I do not see the edit option hence I'm adding the additional details here to get the resolution of my query.

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);
    }
}
0
votes

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();
0
votes

Check your proxy settings. In Spring applications, you can add the following to the VM arguments to set your proxy: -Dhttp.proxyHost=your.proxy.net -Dhttp.proxyPort=8080