add auth

README.md

@@ -18,7 +18,7 @@ A simple NATS client/server setup for testing message publishing and subscribing
 ### 1. Start the NATS server and message subscriber
 
 ```bash
-docker compose up nats server
+docker compose up --build nats server
 ```
 
 This starts:
@@ -29,7 +29,7 @@ This starts:
 ### 2. Run the interactive client
 
 ```bash
-docker compose run --rm client
+docker compose run --rm --build client
 ```
 
 This opens an interactive prompt where you can:
@@ -57,13 +57,13 @@ docker compose down
 1. **Terminal 1**: Start the infrastructure
 
    ```bash
-   docker compose up nats server -d
+   docker compose up --build nats server
    ```
 
 2. **Terminal 2**: Run the client
 
    ```bash
-   docker compose run --rm client
+   docker compose run --rm --build client
    ```
 
    You'll see:
@@ -94,7 +94,7 @@ bun install
 ### Start NATS server
 
 ```bash
-docker run -p 4222:4222 nats:latest
+docker run -p 4222:4222 -ti nats:latest --auth s3cr3t
 ```
 
 ### Run the server (in one terminal)
@@ -112,6 +112,7 @@ bun run client.ts
 ## Environment Variables
 
 - `NATS_SERVER`: NATS server URL (default: `nats://localhost:4222`)
+- `NATS_AUTH_TOKEN`: NATS server [auth token](https://docs.nats.io/running-a-nats-service/configuration/securing_nats/auth_intro/tokens)
 
 ## Troubleshooting
 

client.ts

@@ -2,9 +2,14 @@ import { connect } from "nats";
 import readline from "readline";
 
 const NATS_SERVER = process.env.NATS_SERVER || "nats://localhost:4222";
+const NATS_AUTH_TOKEN = process.env.NATS_AUTH_TOKEN || "s3cr3t";
 
-const nc = await connect({ servers: NATS_SERVER });
-console.log(`Connected to NATS at ${NATS_SERVER}`);
+console.log(
+  `Connecting to NATS at ${NATS_SERVER} with token ${NATS_AUTH_TOKEN}`
+);
+
+const nc = await connect({ servers: NATS_SERVER, token: NATS_AUTH_TOKEN });
+console.log(`Connected to NATS`);
 
 const rl = readline.createInterface({
   input: process.stdin,

docker-compose.yml

@@ -1,8 +1,9 @@
 services:
   nats:
-    # docker run -p 4222:4222 -ti nats:latest
+    # docker run -p 4222:4222 -ti nats:latest --auth s3cr3t
     image: nats:latest
     container_name: nats
+    command: "--auth s3cr3t"
     ports:
       - 4222:4222
 
@@ -15,6 +16,7 @@ services:
       - nats
     environment:
       - NATS_SERVER=nats://nats:4222
+      - NATS_AUTH_TOKEN=s3cr3t
 
   client:
     build:
@@ -27,3 +29,4 @@ services:
       - nats
     environment:
       - NATS_SERVER=nats://nats:4222
+      - NATS_AUTH_TOKEN=s3cr3t

index.ts

@@ -1,9 +1,13 @@
 import { connect } from "nats";
 
 const NATS_SERVER = process.env.NATS_SERVER || "nats://localhost:4222";
+const NATS_AUTH_TOKEN = process.env.NATS_AUTH_TOKEN || "s3cr3t";
 
-const nc = await connect({ servers: NATS_SERVER });
+console.log(
+  `Connecting to NATS at ${NATS_SERVER} with token ${NATS_AUTH_TOKEN}`
+);
 
+const nc = await connect({ servers: NATS_SERVER, token: NATS_AUTH_TOKEN });
 console.log("Connected to NATS");
 
 const sub = nc.subscribe("test");