How to Fix: How to fix "Connection Refused" when accessing .NET 9 Web API in Docker
Fix How to fix "Connection Refused" when acc. Try exposing the port in the Docker run. Step-by-step guide included.
📋 Table of Contents
To resolve the "Connection Refused" error when accessing your ASP.NET Core 9 Web API in Docker, it's essential to understand why this issue occurs. The problem lies in how Docker maps ports between the container and your host machine.
💡 Why You Are Getting This Error
- The issue arises because the ASP.NET Core 9 Web API is listening on a non-standard port, which is not mapped to your host machine's default port.
🛠️ Step-by-Step Verified Fixes
Method 1: Exposing the Port in Dockerfile
- Step 1: In your
Dockerfile, map the port from the container to your host machine by adding the following line:EXPOSE 8085
Method 2: Using Docker Compose with Port Mapping
- Step 1: In your
docker-compose.yml, add the following configuration to map the port:version: '3'services:api:image: your-image-nameports:8085:8085
✨ Wrapping Up
By following these steps, you should be able to resolve the "Connection Refused" error and successfully access your ASP.NET Core 9 Web API in Docker.
❓ Frequently Asked Questions
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