Invocation Failure When Testing Application-Level Registration in Dubbo 3.x Based on the Sample Configuration

[qq31715879]

Pre-check

• I am sure that all the content I provide is in English.

Apache Dubbo Component

Java Samples (apache/dubbo-samples)

Details

Below is a clear and GitHub-friendly English translation. I have kept the configuration blocks and error messages intact, and translated only the descriptive text.

---

Provider configuration

dubbo:
  application:
    name: nest-test
    qos-enable: true
    qos-port: 22222
    qos-accept-foreign-ip: false
    logger: slf4j
  protocol:
    name: tri
#    name: dubbo
    port: 50051
  registry:
    address: nacos://${nacos.address:127.0.0.1}:8848
    register-mode: instance

Consumer configuration

dubbo:
  application:
    name: dubbo-springboot-demo-consumer
    logger: slf4j
#  protocol:
#    name: dubbo
#    port: 20880
  registry:
    address: nacos://${nacos.address:127.0.0.1}:8848
    register-mode: instance

Error

Failed to check the status of the service com.digiwin.nest.test.client.api.TestDubboApi.
No provider available for the service com.digiwin.nest.test.client.api.TestDubboApi
from the url consumer://192.168.202.151/com.digiwin.nest.test.client.api.TestDubboApi
?application=dubbo-springboot-demo-consumer
&background=false
&dubbo=2.0.2
&executor-management-mode=isolation
&file-cache=true
&interface=com.digiwin.nest.test.client.api.TestDubboApi
&logger=slf4j
&methods=queryOrder
&pid=25336
&register.ip=192.168.202.151
&release=3.3.3
&side=consumer
&sticky=false
&timestamp=1769072507846
&unloadClusterRelated=false

to the consumer 192.168.202.151 using Dubbo version 3.3.3

---

Still fails even when keeping the service (application) name consistent with the provider

dubbo:
  application:
    name: nest-test
    logger: slf4j
#  protocol:
#    name: dubbo
#    port: 20880
  registry:
    address: nacos://${nacos.address:127.0.0.1}:8848
    register-mode: instance

Error

Failed to check the status of the service com.digiwin.nest.test.client.api.TestDubboApi.
No provider available for the service com.digiwin.nest.test.client.api.TestDubboApi
from the url consumer://192.168.202.151/com.digiwin.nest.test.client.api.TestDubboApi
?application=nest-test
&background=false
&dubbo=2.0.2
&executor-management-mode=isolation
&file-cache=true
&interface=com.digiwin.nest.test.client.api.TestDubboApi
&logger=slf4j
&methods=queryOrder
&pid=37628
&register.ip=192.168.202.151
&release=3.3.3
&side=consumer
&sticky=false
&timestamp=1769073022340
&unloadClusterRelated=false

to the consumer 192.168.202.151 using Dubbo version 3.3.3

---

If you want, I can further polish this into a standard Dubbo GitHub issue template (Background / Expected Behavior / Actual Behavior / Environment / Reproduction Steps).

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[qq31715879]

Interface-level registration works correctly, and service invocation succeeds without any issues.