【发布时间】:2020-02-25 04:31:20
【问题描述】:
我正在使用来自 spring-boot-starter-webflux 的 WebClient。我一直在生产环境中看到来自 reactor netty 的对等错误重置连接。然后 reactor netty 在几秒钟(~10-20 秒)后重试这个失败的请求。我没有看到或无法在较低的环境中重现此错误。我无法确定这个错误的根本原因,在这里我提供了我的 ClientHelper 实现和错误日志,
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.http.HttpStatus;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.ClientResponse;
import org.springframework.web.reactive.function.client.WebClient;
public class ClientHelper {
protected WebClient webClient;
public <T> T post(Object request, TypeReference typeReference,
String uri) {
try {
ObjectMapper objectMapper = new ObjectMapper();
String body = objectMapper.writeValueAsString(request);
ClientResponse clientResponse =
getWebClient()
.post()
.uri(uri)
.body(BodyInserters.fromObject(body))
.exchange()
.block();
return prepareResponse(clientResponse, typeReference, objectMapper);
} catch (Exception e) {
return handleException(e);
}
}
protected <T> T prepareResponse(ClientResponse clientResponse, TypeReference typeReference,
ObjectMapper objectMapper) throws Exception {
String responseText = clientResponse.bodyToMono(String.class).block();
if (clientResponse.statusCode() == HttpStatus.OK) {
return objectMapper.readValue(responseText, typeReference);
} else {
throwNewException("Remote service returned a message with statusCode = "
+ clientResponse.statusCode() + "; response = " + responseText, null);
return null;
}
}
protected <T> T handleException(Exception e) {
throwNewException("Communication error. Cause: " + e.getMessage(), e);
return null;
}
protected void throwNewException(String message, Throwable cause) {
throw new RuntimeException(message, cause);
}
public WebClient getWebClient() {
return WebClient.builder().baseUrl("http://app.corp.com/").build();
}
2019-10-29 20:56:20,383 DEBUG r.u.Loggers$Slf4JLogger [reactor-http-epoll-8] [] [id: 0x65cf7989, L:/xx.xx.xxx.xxx:xxxxx - R:app.corp.com/xx.xx.xx.xx:xxx] The connection observed an error, the request will be retried
io.netty.channel.unix.Errors$NativeIoException: readAddress(..) failed: Connection reset by peer
spring-boot-starter-webflux: 2.1.9.RELEASE, 反应堆网络:0.8.12.RELEASE
如果此实施存在问题和/或如何进一步分类此问题,请告诉我。
【问题讨论】:
-
我在我的 prod 环境中遇到了类似的问题,在较低的环境中确实无法始终如一地重新创建。对此有任何了解吗?
-
我升级到最新的 Spring Boot 版本并添加了 Webclient 的连接超时来解决问题。
-
你可以分享你使用的连接超时配置和弹簧启动版本.. bcz 我面临同样的问题。谢谢
-
我添加了 ReadTimeoutHandler、WriteTimeoutHandler、IdleStateHandler 和 10 秒作为超时配置。 Spring Boot 版本为 2.1.9.RELEASE。
标签: spring-boot spring-webflux reactor-netty