我一直在为我的微服务nest js应用程序使用docker和nginx，为每个服务设置反向代理，以便我可以在同一端口的不同路径下访问它们。

Dockerfile（每个服务相同）

# Use a Node.js LTS version as the base image
FROM node:lts-alpine
# Create a working directory inside the container
WORKDIR /usr/src/app
# Copy the package.json and package-lock.json files to the working directory
COPY package*.json ./
# Install the dependencies
RUN npm install
# Copy the rest of the files to the working directory
COPY . .
# Expose the port 3000 so that the application can be accessed from outside the container
EXPOSE 3000
# Run the application
CMD ["npm", "run", "start:dev"]

字符串

nginx.conf

worker_processes 1;

events { worker_connections 1024; }

http {

  upstream users {
    server user-api:3000;
  }

  upstream academic {
    server academic-api:3000;
  }
 
  server {
    listen 80;

    location /users/ {
      proxy_pass http://users/;
    }

    location /academic/ {
      proxy_pass http://academic/;
    }
  }
}

型

• docker-compose.yaml*

version: "3"

services:
  academic-api:
    container_name: academic-api
    image: academic-api
    build:
      context: ./academic-api
      dockerfile: Dockerfile.dev
    volumes:
      - ./academic-api:/usr/src/app
      - /usr/src/app/node_modules
    command: npm run start:dev
    restart: unless-stopped

  user-api:
    container_name: user-api
    image: user-api
    build:
      context: ./user-api
      dockerfile: Dockerfile.dev
    volumes:
      - ./user-api:/usr/src/app
      - /usr/src/app/node_modules
    command: npm run start:dev
    restart: unless-stopped

  nginx:
    container_name: nginx
    image: nginx:latest
    ports:
      - "3000:80"
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf
    depends_on:
      - user-api
      - academic-api
    restart: unless-stopped

型
我可以在http：//localhost：3000/academic/和http：//localhost：3000/users/下访问我的2个服务，一切正常。
现在我想将WebSocket添加到学术API中，我正在使用socket io。默认情况下，WebSocket服务器也会在端口3000上启动，这也是http服务器端口。

import { OnModuleInit } from "@nestjs/common";
import {
  ConnectedSocket,
  MessageBody,
  SubscribeMessage,
  WebSocketGateway,
  WebSocketServer,
} from "@nestjs/websockets";
import { Server } from "socket.io";

@WebSocketGateway()
export class GatewayService implements OnModuleInit {
  @WebSocketServer()
  server: Server;

  onModuleInit() {
    console.log("GatewayService initialized");
    this.server.on("connection", (socket) => {
      console.log("Socket connected => " + socket.id);
    });
  }
}

型
但是我不能在nginx代理下的docker环境中工作。基本上，我希望能够连接到WebSocket，如果我击中http：//localhost：3000/academic/使用websocket协议使用 Postman 。
但是，如果我在端口3000上本地运行学术API服务器，我就可以让它工作。当我使用http协议时，它连接到http服务器，如果我使用WebSocket协议，它连接到websocket服务器。