update 3 files and create 1 file

blog/cheatsheet-traefik-docker.mdx

@@ -111,6 +111,35 @@ bar12345:
     - traefik.http.services.bar12345.loadbalancer.server.port=12345
 ```
 
+## Specify more than one router and service per container
+
+In this example, requests are forwarded for `http://127.0.0.1/web2ports-a` to `http://<private IP of container>:8001` in addition to `http://127.0.0.1/web2ports-b` forwarding to `http://<private IP of container>:8002`:
+
+```yml
+web2ports:
+  image: python:3.10
+  ports:
+    - 8001:8001
+    - 8002:8002
+  working_dir: /app
+  volumes:
+    - ./server_whoami.py:/app/server_whoami.py
+  command: >
+    sh -c "python3 server_whoami.py --port 8001 
+    & python3 server_whoami.py --port 8002"
+  labels:
+    - traefik.enable=true
+    # Specify more than one router and service per container
+    - traefik.http.routers.a-router.entrypoints=web
+    - traefik.http.routers.a-router.rule=PathPrefix(`/web2ports-a`)
+    - traefik.http.routers.a-router.service=a-service
+    - traefik.http.services.a-service.loadbalancer.server.port=8001
+    - traefik.http.routers.b-router.entrypoints=web
+    - traefik.http.routers.b-router.rule=PathPrefix(`/web2ports-b`)
+    - traefik.http.routers.b-router.service=b-service
+    - traefik.http.services.b-service.loadbalancer.server.port=8002
+```
+
 ## Resources
 
 

blog/wiki-socket.mdx

@@ -0,0 +1,42 @@
+---
+authors:
+  - frank
+tags:
+  - Wiki Socket
+description: Wiki Socket
+keywords:
+  - Wiki Socket
+image: https://i.imgur.com/mErPwqL.png
+date: 2024-01-26
+draft: false
+enableComments: true # for Gisqus
+---
+
+# Wiki Socket
+
+
+Terms of sockets in socket programming,
+
+- On the server side:
+  - The socket responsible for listening and accepting incoming connections is commonly referred to as the "**server socket**".
+  - The individual sockets created for each accepted connection, responsible for data exchange with the connected clients, are often referred to as "**client socket**" (or simply "**socket**").
+- On the client side:
+  - The socket responsible for initiating a connection to the server and handling data exchange is commonly referred to as the "**client socket**" or "**socket**"
+
+In summary:
+- Server Side:
+  - Listening Socket: "**Server Socket**"
+  - Data Exchange Sockets (for each connection): "**Client Socket**" or just "**Socket**"
+- Client Side:
+  - Data Exchange Socket: "**Client Socket**" or just "**Socket**"
+
+
+<!--truncate-->
+
+## Resources
+
+[Transports and Protocols — Python 3.12.1 documentation](https://docs.python.org/3/library/asyncio-protocol.html)
+
+[selectors — High-level I/O multiplexing — Python 3.12.1 documentation](https://docs.python.org/3/library/selectors.html)
+
+[socket — Low-level networking interface — Python 3.12.1 documentation](https://docs.python.org/3/library/socket.html)