Connection has been closed BEFORE response, while sending request body when uploading large file (size: 9 MO)

See original GitHub issue

I have spring boot application running behind a spring cloud gateway, when I upload large file (size: 10 MO) via a postman request, I get the following error:

reactor.netty.http.client.PrematureCloseException: Connection has been closed BEFORE response, while sending request body
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	|_ checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
	|_ checkpoint ⇢ HTTP POST "/hi" [ExceptionHandlingWebHandler]
Stack trace:

spring boot application Controller:

@PostMapping(value = "hi")
public String postHi(@RequestHeader HttpHeaders headers) {
  return request.getHeader("Content-Length");
}

Spring cloud gateway route configuration :

server:
  port: 8101
spring:
  cloud:
    gateway:
      routes:
        - id: hi
          uri: http://localhost:8080/hi
          predicates:
            - Path=/hi/**

Steps to Reproduce

Here is an example to reproduce the issue https://github.com/jemmali-git/examples.git

Reactor version used: 0.9.1RELEASE
spring cloud gateway version: 2.2.0.RELEASE
Other relevant libraries versions (eg. netty, …):
JVM version (javar -version): 1.8
OS and version : Windows 10 Pro

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:10 (5 by maintainers)

Top GitHub Comments

1reaction

violetaggcommented, Dec 12, 2019

You might be hitting some of these limitations https://docs.spring.io/spring-boot/docs/current/reference/html/appendix-application-properties.html

server.tomcat.max-http-form-post-size
server.tomcat.max-swallow-size
spring.servlet.multipart.max-file-size
spring.servlet.multipart.max-request-size

I see that the target application uses Spring MVC. When the limitations above are met Tomcat will reset the connection which will lead to the exception Connection has been closed BEFORE response, while sending request body that you see.

0reactions

kiwi-fieldcommented, Apr 10, 2020

@violetagg see https://github.com/reactor/reactor-netty/issues/1062