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Error 500 on spring cloud gateway finishConnect(..) on Heroku

Time：11-28

I use Eureka with spring boot£. 1 server, 1 gateway, and 2 api, in my localhost i have no problems but when i deploy it on Heroku i can't reach an api through the api gateway. The EUREKA server discover all my services with no issues.

In the log of the gateway i have an ERROR 500

2022-11-22T14:23:30.428847 00:00 app[web.1]: 2022-11-22 14:23:30.428  INFO 4 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 1 endpoint(s) beneath base path '/actuator'
2022-11-22T14:23:30.666161 00:00 app[web.1]: 2022-11-22 14:23:30.665  INFO 4 --- [           main] DiscoveryClientOptionalArgsConfiguration : Eureka HTTP Client uses RestTemplate.
2022-11-22T14:23:31.365410 00:00 app[web.1]: 2022-11-22 14:23:31.365  WARN 4 --- [           main] iguration$LoadBalancerCaffeineWarnLogger : Spring Cloud LoadBalancer is currently working with the default cache. While this cache implementation is useful for development and tests, it's recommended to use Caffeine cache in production.You can switch to using Caffeine cache, by adding it and org.springframework.cache.caffeine.CaffeineCacheManager to the classpath.
2022-11-22T14:23:31.391840 00:00 app[web.1]: 2022-11-22 14:23:31.391  INFO 4 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2022-11-22T14:23:31.467468 00:00 app[web.1]: 2022-11-22 14:23:31.465  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2022-11-22T14:23:31.473095 00:00 app[web.1]: 2022-11-22 14:23:31.472  INFO 4 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2022-11-22T14:23:31.498500 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2022-11-22T14:23:31.498507 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2022-11-22T14:23:31.498541 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2022-11-22T14:23:31.498575 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2022-11-22T14:23:31.498609 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2022-11-22T14:23:31.498651 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2022-11-22T14:23:31.498691 00:00 app[web.1]: 2022-11-22 14:23:31.498  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2022-11-22T14:23:32.651073 00:00 app[web.1]: 2022-11-22 14:23:32.650  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2022-11-22T14:23:32.657211 00:00 app[web.1]: 2022-11-22 14:23:32.656  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Starting heartbeat executor: renew interval is: 30
2022-11-22T14:23:32.661123 00:00 app[web.1]: 2022-11-22 14:23:32.660  INFO 4 --- [           main] c.n.discovery.InstanceInfoReplicator     : InstanceInfoReplicator onDemand update allowed rate per min is 4
2022-11-22T14:23:32.668470 00:00 app[web.1]: 2022-11-22 14:23:32.668  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1669127012667 with initial instances count: 1
2022-11-22T14:23:32.670420 00:00 app[web.1]: 2022-11-22 14:23:32.670  INFO 4 --- [           main] o.s.c.n.e.s.EurekaServiceRegistry        : Registering application API-GATEWAY with eureka with status UP
2022-11-22T14:23:32.671101 00:00 app[web.1]: 2022-11-22 14:23:32.670  INFO 4 --- [           main] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1669127012670, current=UP, previous=STARTING]
2022-11-22T14:23:32.673386 00:00 app[web.1]: 2022-11-22 14:23:32.673  INFO 4 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_API-GATEWAY/api-gateway:21401: registering service...
2022-11-22T14:23:32.751146 00:00 app[web.1]: 2022-11-22 14:23:32.750  INFO 4 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_API-GATEWAY/api-gateway:21401 - registration status: 204
2022-11-22T14:23:33.561901 00:00 heroku[web.1]: State changed from starting to up
2022-11-22T14:23:33.486111 00:00 app[web.1]: 2022-11-22 14:23:33.485  INFO 4 --- [           main] o.s.b.web.embedded.netty.NettyWebServer  : Netty started on port 21401
2022-11-22T14:23:33.488877 00:00 app[web.1]: 2022-11-22 14:23:33.488  INFO 4 --- [           main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 21401
2022-11-22T14:23:33.526112 00:00 app[web.1]: 2022-11-22 14:23:33.525  INFO 4 --- [           main] com.medhead.gateway.GatewayApplication   : Started GatewayApplication in 13.001 seconds (JVM running for 13.623)
2022-11-22T14:23:35.370016 00:00 heroku[router]: at=info method=GET path="/" host=headmed-gateway.herokuapp.com request_id=cd66391f-2d15-4701-b0f9-c60c5c3f4b89 fwd="92.158.60.103" dyno=web.1 connect=0ms service=146ms status=404 bytes=387 protocol=https
2022-11-22T14:24:32.698383 00:00 heroku[router]: at=info method=GET path="/" host=headmed-gateway.herokuapp.com request_id=e5da2cfa-990f-4cab-ac75-b8e63ba6960e fwd="92.158.60.103" dyno=web.1 connect=0ms service=11ms status=404 bytes=387 protocol=https
2022-11-22T14:24:48.125828 00:00 heroku[router]: at=info method=GET path="/actuator/health" host=headmed-gateway.herokuapp.com request_id=84a74ade-2e24-4b00-a2ba-e87e23979557 fwd="92.158.60.103" dyno=web.1 connect=0ms service=51ms status=200 bytes=133 protocol=https
2022-11-22T14:25:37.041666 00:00 heroku[router]: at=info method=GET path="/patient-service/patients" host=headmed-gateway.herokuapp.com request_id=41c71d85-f335-494c-9b2d-119ee858a606 fwd="92.158.60.103" dyno=web.1 connect=0ms service=223ms status=500 bytes=411 protocol=https
2022-11-22T14:25:37.038507 00:00 app[web.1]: 2022-11-22 14:25:37.037 ERROR 4 --- [or-http-epoll-8] a.w.r.e.AbstractErrorWebExceptionHandler : [1a0ff15a-4]  500 Server Error for HTTP GET "/patient-service/patients"
2022-11-22T14:25:37.038521 00:00 app[web.1]: 
2022-11-22T14:25:37.038522 00:00 app[web.1]: io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: localhost/127.0.0.1:6115
2022-11-22T14:25:37.038523 00:00 app[web.1]:    Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
2022-11-22T14:25:37.038525 00:00 app[web.1]: Error has been observed at the following site(s):
2022-11-22T14:25:37.038527 00:00 app[web.1]:    *__checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
2022-11-22T14:25:37.038528 00:00 app[web.1]:    *__checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
2022-11-22T14:25:37.038529 00:00 app[web.1]:    *__checkpoint ⇢ HTTP GET "/patient-service/patients" [ExceptionHandlingWebHandler]
2022-11-22T14:25:37.038530 00:00 app[web.1]: Original Stack Trace:
2022-11-22T14:25:37.038530 00:00 app[web.1]: Caused by: java.net.ConnectException: finishConnect(..) failed: Connection refused
2022-11-22T14:25:37.038531 00:00 app[web.1]:    at io.netty.channel.unix.Errors.newConnectException0(Errors.java:155) ~[netty-transport-native-unix-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038531 00:00 app[web.1]:    at io.netty.channel.unix.Errors.handleConnectErrno(Errors.java:128) ~[netty-transport-native-unix-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038531 00:00 app[web.1]:    at io.netty.channel.unix.Socket.finishConnect(Socket.java:359) ~[netty-transport-native-unix-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038533 00:00 app[web.1]:    at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.doFinishConnect(AbstractEpollChannel.java:710) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038533 00:00 app[web.1]:    at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:687) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038534 00:00 app[web.1]:    at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038535 00:00 app[web.1]:    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:489) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038535 00:00 app[web.1]:    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038535 00:00 app[web.1]:    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038536 00:00 app[web.1]:    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038536 00:00 app[web.1]:    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.038536 00:00 app[web.1]:    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
2022-11-22T14:25:37.038537 00:00 app[web.1]: 
2022-11-22T14:25:37.092716 00:00 app[web.1]: 2022-11-22 14:25:37.091 ERROR 4 --- [or-http-epoll-1] a.w.r.e.AbstractErrorWebExceptionHandler : [0a942c39-5]  500 Server Error for HTTP GET "/patient-service/patients"
2022-11-22T14:25:37.092717 00:00 app[web.1]: 
2022-11-22T14:25:37.092718 00:00 app[web.1]: io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: localhost/127.0.0.1:6115
2022-11-22T14:25:37.092719 00:00 app[web.1]:    Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
2022-11-22T14:25:37.092720 00:00 app[web.1]: Error has been observed at the following site(s):
2022-11-22T14:25:37.092720 00:00 app[web.1]:    *__checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
2022-11-22T14:25:37.092721 00:00 app[web.1]:    *__checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
2022-11-22T14:25:37.092722 00:00 app[web.1]:    *__checkpoint ⇢ HTTP GET "/patient-service/patients" [ExceptionHandlingWebHandler]
2022-11-22T14:25:37.092722 00:00 app[web.1]: Original Stack Trace:
2022-11-22T14:25:37.092722 00:00 app[web.1]: Caused by: java.net.ConnectException: finishConnect(..) failed: Connection refused
2022-11-22T14:25:37.092723 00:00 app[web.1]:    at io.netty.channel.unix.Errors.newConnectException0(Errors.java:155) ~[netty-transport-native-unix-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092723 00:00 app[web.1]:    at io.netty.channel.unix.Errors.handleConnectErrno(Errors.java:128) ~[netty-transport-native-unix-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092724 00:00 app[web.1]:    at io.netty.channel.unix.Socket.finishConnect(Socket.java:359) ~[netty-transport-native-unix-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092725 00:00 app[web.1]:    at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.doFinishConnect(AbstractEpollChannel.java:710) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092725 00:00 app[web.1]:    at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:687) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092725 00:00 app[web.1]:    at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092726 00:00 app[web.1]:    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:489) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092726 00:00 app[web.1]:    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397) ~[netty-transport-classes-epoll-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092726 00:00 app[web.1]:    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092727 00:00 app[web.1]:    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092727 00:00 app[web.1]:    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.84.Final.jar!/:4.1.84.Final]
2022-11-22T14:25:37.092727 00:00 app[web.1]:    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
2022-11-22T14:25:37.092728 00:00 app[web.1]: 
2022-11-22T14:25:37.095360 00:00 heroku[router]: at=info method=GET path="/patient-service/patients" host=headmed-gateway.herokuapp.com request_id=6657476d-7856-4a93-8243-5f5fb56b2921 fwd="92.158.60.103" dyno=web.1 connect=0ms service=14ms status=500 bytes=411 protocol=https

this is my application prop for my and micro service

application-heroku.yml (EUREKA SERVER)

server:
  port: ${PORT:8761}
spring:
  application:
    name: eureka-server
  cloud:
    service-registry:
      auto-registration:
        enabled: false
eureka:
  client:
    register-with-eureka: false
    fetch-registry: false
management:
  endpoints:
    web:
      exposure:
        include: "*"

application-heroku.yml (GATEWAY)

server:
  port: ${PORT:8082}
  forward-headers-strategy: framework
spring:
  application:
    name: api-gateway
  cloud:
    discovery:
      enabled: true
    gateway:
      globalcors:
        add-to-simple-url-handler-mapping: true
      metrics:
        enabled: true
      discovery:
        locator:
          enabled: true
          lower-case-service-id: true
      routes:
        - id: patient-service
          uri: lb://patient-service
          predicates:
            - Path=/patients/**
          filters:
            - RewritePath=/patients(?<segment>/?.*), $\{segment}
eureka:
  client:
    service-url:
      defaultZone: https://headmed-eureka.herokuapp.com/eureka/
  instance:
    hostname: localhost
    nonSecurePort: 80

application-heroku.yml (MICROSERVICE)

server:
  port: ${PORT:8080}
  forward-headers-strategy: none
eureka:
  client:
    enabled: true
    service-url:
      defaultZone:  https://headmed-eureka.herokuapp.com/eureka/
  instance:
    hostname: localhost
    instance-id: ${spring.application.name}:${random.uuid}
spring:
  application:
    name: patient-service
  datasource:
    url: jdbc:h2:mem:patient;
    username: sa
    password: password
    driverClassName: org.h2.Driver
  jpa:
    database-platform: org.hibernate.dialect.H2Dialect
    show-sql: true
    defer-datasource-initialization: true
    hibernate:
      ddl-auto: create-drop
    generate-ddl: true
    database: h2
  sql:
    init:
      mode: always
  h2:
    console:
      enabled: true
      path: /h2
  data:
    jpa:
      repositories:
        bootstrap-mode: default
springdoc:
  swagger-ui:
    path: /swagger-ui

I think the issue is located on Heroku but i have no idea for a workaround.

I checked to using the nonSecurePort but it's not working.

CodePudding user response：

I solved the problem by adding.

non-secure-port-enabled: true
secure-port-enabled: false
non-secure-port: 80
secure-port: 443

Page link：https//www.codepudding.com/Enterprise/624647.html

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