[FIXED] Spring Boot WebClient Connection and Read Timeout

Issue

Currently my post and get requests are handled through WebClients which has a common connection and read timeout in Spring Boot. I have 5 different classes each requiring its own set of connection and read timeout. I don't want to create 5 different WebClients, rather use the same Webclient but while sending a post or a get request from a particular class, specify the required connection and read timeout. Is there any way to implement this?

My current WebClient:

    @Bean
    public WebClient getWebClient(WebClient.Builder builder){

        HttpClient httpClient = HttpClient.newConnection()
                .tcpConfiguration(tcpClient -> {
                    tcpClient = tcpClient.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectionTimeout*1000);
                    tcpClient = tcpClient.doOnConnected(conn -> conn
                            .addHandlerLast(new ReadTimeoutHandler(readTimeout, TimeUnit.SECONDS)));
                    return tcpClient;
                }).wiretap(true);

        ClientHttpConnector connector = new ReactorClientHttpConnector(httpClient);

        return builder.clientConnector(connector).build();
    }

A post request I'm using:

public WebClientResponse httpPost(String endpoint, String requestData, Map<String, Object> requestHeader) {

        ClientResponse res = webClient.post().uri(endpoint)
                .body(BodyInserters.fromObject(requestData))
                .headers(x -> {
                    if(requestHeader != null && !requestHeader.isEmpty()) {
                        for (String s : requestHeader.keySet()) {
                            x.set(s, String.valueOf(requestHeader.get(s)));
                        }
                    }
                })
                .exchange()
                .doOnSuccess(x -> log.info("response code = " + x.statusCode()))
                .block();

        return convertWebClientResponse(res);
    }

Solution

You can configure request-level timeout in WebClient.

 webClient.get()
   .uri("https://baeldung.com/path")
   .httpRequest(httpRequest -> {
   HttpClientRequest reactorRequest = httpRequest.getNativeRequest();
   reactorRequest.responseTimeout(Duration.ofSeconds(2));
 });

Now what you can do is that based on the request you can add those values either from the properties file or you can hard code them.

Reference:- https://www.baeldung.com/spring-webflux-timeout

Answered By - Manish Kumar
Answer Checked By - David Marino (JavaFixing Volunteer)