I'm having major problems getting Dapr up and running with my microservices. Every time I try to invoke another service, it returns a 500 error with the message
client error: the server closed connection before returning the first response byte. Make sure the server returns 'Connection: close' response header before closing the connection
The services and dapr sidecars are currently running in docker-compose on our dev machines but will run in Kubernetes when it is deployed properly.
When I look at the logs for the dapr containers in Docker for Windows, I can see the application being discovered on port 443 and a few initialisation messages but nothing else ever gets logged after that, even when I make my invoke request.
I have a container called clients, which I'm calling an API called test in it and this is then trying to call Microsoft's example weather forecast API in another container called simpleapi.
I'm using swaggerUI to call the apis. The test api returns 200 but when I put a breakpoint on the invoke, I can see the response is 500.
If I call the weatherforecast api directly using swaggerui, it returns a 200 with the expected payload.
I have the Dapr dashboard running in a container and it doesn't show any applications.
Docker-Compose.yml
version: '3.4'
services:
clients:
image: ${DOCKER_REGISTRY-}clients
container_name: "Clients"
build:
context: .
dockerfile: Clients/Dockerfile
ports:
- "50002:50002"
depends_on:
- placement
- database
networks:
- platform
clients-dapr:
image: "daprio/daprd:edge"
container_name: clients-dapr
command: [
"./daprd",
"-app-id", "clients",
"-app-port", "443",
"-placement-host-address", "placement:50006",
"-dapr-grpc-port", "50002"
]
depends_on:
- clients
network_mode: "service:clients"
simpleapi:
image: ${DOCKER_REGISTRY-}simpleapi
build:
context: .
dockerfile: SimpleAPI/Dockerfile
ports:
- "50003:50003"
depends_on:
- placement
networks:
- platform
simpleapi-dapr:
image: "daprio/daprd:edge"
container_name: simpleapi-dapr
command: [
"./daprd",
"-app-id", "simpleapi",
"-app-port", "443",
"-placement-host-address", "placement:50006",
"-dapr-grpc-port", "50003"
]
depends_on:
- simpleapi
network_mode: "service:simpleapi"
placement:
image: "daprio/dapr"
container_name: placement
command: ["./placement", "-port", "50006"]
ports:
- "50006:50006"
networks:
- platform
dashboard:
image: "daprio/dashboard"
container_name: dashboard
ports:
- "8080:8080"
networks:
- platform
networks:
platform:
Test controller from the Clients API.
[Route("api/[controller]")]
[ApiController]
public class TestController : ControllerBase
{
[HttpGet]
public async Task<ActionResult> Get()
{
var httpClient = DaprClient.CreateInvokeHttpClient();
var response = await httpClient.GetAsync("https://simpleapi/weatherforecast");
return Ok();
}
}
This is a major new project for my company and it's looking like we're going to have to abandon Dapr and implement everything ourselves if we can't get this working soon.
I'm hoping there's some glaringly obvious problem here.
