Spring Webflux WebClient记录``对等重置连接'' [英] Spring webflux WebClient logs 'Connection reset by peer'

问题描述

我有以下使用WebClient进行HTTP调用的代码.

I have this following code which uses WebClient to make HTTP calls.

        webClient.post()
                 .uri("/users/track")
                 .body(BodyInserters.fromObject(getUserTrackPayload(selection, customAttribute, partyId).toString()))
                 .header(CONTENT_TYPE, APPLICATION_JSON)
                 .retrieve()
                 .onStatus(httpStatus -> !CREATED.equals(httpStatus),
                           response -> response.bodyToMono(String.class)
                                               .flatMap(body -> buildErrorMessage(response.statusCode().value(), body, partyId,
                                                                                  customAttribute)
                                                   .flatMap(e -> Mono.error(new MyException(e)))))
                 .bodyToMono(Object.class)
                 .map(o -> (JsonObject)new Gson().toJsonTree(o))
                 .flatMap(body -> body.get("message") != null && body.get("message").getAsString().equalsIgnoreCase("success")
                                  && body.get("attributes_processed") != null && body.get("attributes_processed").getAsInt() == 1
                     ? Mono.just(body)
                     : buildErrorMessage(CREATED.value(), body.toString(), partyId, customAttribute)
                         .flatMap(e -> Mono.error(new MyException(e))));

一段时间(例如10分钟)后第一次调用此代码，我得到以下日志.但是，调用成功，输出正确.

I am getting the following logs the first time this code is called after some time (like 10 minutes). But, the call is succeeding with the right output.

io.netty.channel.unix.Errors$NativeIoException: syscall:read(..) failed: Connection reset by peer at io.netty.channel.unix.FileDescriptor.readAddress(..)(Unknown Source)
2019-03-19 03:11:45,625 WARN  [:::] [reactor-http-epoll-8] reactor.netty.http.client.HttpClientConnect : [id: 0x2e3252c0, L:/172.18.0.125:42956 - R:my-endpoint.com/151.101.53.208:443] The connection observed an error

不确定为什么会生成这些日志.当我使用SpringBoot 2.1.0时，它以ERROR级别登录，现在我升级到2.1.3版本(反应器净值版本-0.8.5)，并且以WARN级别登录.我应该担心这些日志吗?

Not sure why these logs are getting generated. When I was using SpringBoot 2.1.0, it was logging in ERROR level, now I upgraded to 2.1.3 version (reactor netty version - 0.8.5) and it is logging in WARN level. Should I be worried about these logs?

推荐答案

当客户端连接一次并且下一个请求失败-然后重试时，客户端消失(反弹)时，我看到了类似的行为.

I have seen similar behavior when the client goes away (bounced) after connecting to it once and the next request fails - then retries.

在创建WebClient时尝试禁用连接池.像这样:

Try disabling connection pooling when creating the WebClient. Something like this:

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

private ClientHttpConnector connector() {
    return new ReactorClientHttpConnector(HttpClient.from(TcpClient.newConnection()));
}

这篇关于Spring Webflux WebClient记录``对等重置连接''的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！