Gateway MVC: Path seems not passing through the request body

[estigma88]

Describe the bug
Path seems not passing through the request body, for instance:

spring:
  cloud:
    gateway:
      mvc:
        routes:
          - id: transcoder
            uri: http://localhost:8089
            predicates:
              - Path=/transcoder/v1/**

http://localhost:8089 is a Wiremock server. The following is the Wiremock logs:

                                               Request was not matched
                                               =======================

-----------------------------------------------------------------------------------------------------------------------
| Closest stub                                             | Request                                                  |
-----------------------------------------------------------------------------------------------------------------------
                                                           |
POST                                                       | POST
[path] /transcoder/v1/break                                | /transcoder/v1/break
                                                           |
{                                                          |                                                     <<<<< Body is not present
  "active" : true                                          |
}                                                          |
                                                           |
-----------------------------------------------------------------------------------------------------------------------

And there is the following exception:

java.io.EOFException: EOF reached while reading
	at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.onComplete(Http2Connection.java:1587) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadSubscription.signalCompletion(SocketTube.java:648) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:853) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowTask.run(SocketTube.java:181) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:207) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:280) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:233) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:782) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:965) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowEvent.handle(SocketTube.java:253) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.handleEvent(HttpClientImpl.java:1467) ~[java.net.http:na]
	at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.lambda$run$3(HttpClientImpl.java:1412) ~[java.net.http:na]
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596) ~[na:na]
	at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.run(HttpClientImpl.java:1412) ~[java.net.http:na]

Sample
The following is a sample where you can find a test GatewayissueApplicationTests that is failing.

[liangsqrt]

i alse meet the same problem, my springboot version is 3.2.0 and the gateway version is org.springframework.cloud:spring-cloud-starter-gateway-mvc:4.1.0

[spencergibb]

the sample was missing a @RequestBody, though the issue is still valid.

[estigma88]

I just tested the sample with implementation("org.springframework.cloud:spring-cloud-starter-gateway-mvc:4.1.1") and it is still failing

[spencergibb]

the sample was missing a `@RequestBody on the body parameter

[estigma88]

I don't follow, where exactly should I put the @RequestBody on the body parameter? The sample code has:

• GatewayissueApplication main entry point
• GatewayissueApplicationTests test
• application.yml gateway config file

There is no @RestController or similar there. Maybe we are confusing this sample with other issues?

[spencergibb]

I'll look after the holidays

[oleg-sukhov]

I face similar problem when using ProxyExchange from the spring-cloud-gateway-mvc. The use case is the following - we are just passing the @RequestBody parameter from one service to another via ProxyExchange. But seems the payload is empty.

[estigma88]

Any updates on this issue?

[spencergibb]

looking now

[spencergibb]

If I remove rest-assured and wiremock and send it to httpbin, the body is sent just fine.

[spencergibb]

If anyone can recreate this without wiremock and rest-assured, please take the time to provide a complete, minimal, verifiable sample (something that we can unzip attached to this issue or git clone, build, and deploy) that reproduces the problem. No Kotlin please.

[estigma88]

@spencergibb Thanks for spending time debugging this issue. You are right, Spring Cloud Gateway is working fine, I changed the HTTP client that it uses, from the JDK client to Apache client, and works fine. I just added this property to the application.yml:

spring:
  cloud:
    gateway:
      mvc:
        http-client:
          type: AUTODETECT

Seems like the JDK HTTP client has some problems connecting with Wiremock over HTTP2, as for the stacktrace here #3183 (comment)

[spencergibb]

Anyone else able to recreate the issue without wiremock?