Simple Socket Server

README.md

@@ -132,6 +132,7 @@ More information on contributing and the general code of conduct for discussion
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Single Client Socket Server/README.md

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+
+# Socket Communication - Single Client and Server
+
+This project demonstrates basic socket programming in Python with a server and a single client. The server waits for a client to connect and then allows two-way communication between the server and the client.
+
+## 📁 Files
+
+- `server.py` – Runs the socket server and waits for a client to connect.
+- `client.py` – Connects to the server and allows interaction with it.
+
+## 🛠 Requirements
+
+- Python 3.x
+- No external libraries required (uses built-in `socket` module)
+
+## 🚀 How to Run
+
+> ⚠️ Make sure both scripts are in the same directory and run them in separate terminals.
+
+### 1. Start the Server
+
+Open a terminal and run:
+
+```bash
+python server.py
+````
+
+This will start the server on `localhost` and listen on a predefined port (usually `localhost:12345` unless configured otherwise).
+
+### 2. Start the Client
+
+In a **different terminal**, run:
+
+```bash
+python client.py
+```
+
+This will connect the client to the server.
+
+Once connected, you can exchange messages between the server and the client.
+
+
+
+## ❗ Notes
+
+* Only **one client** is supported at a time.
+* If you close either the server or client, the socket connection will be terminated.
+* If the server crashes or is stopped, the client will also lose connection.
+
+

Single Client Socket Server/client.py

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+import socket
+
+HOST = "127.0.0.1"  # The server's hostname or IP address
+PORT = 65432  # The port used by the server
+
+with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+    s.connect((HOST, PORT))
+    s.sendall(b"Hello, world")
+    data = s.recv(1024)
+
+print(f"Received {data!r}")

Single Client Socket Server/server.py

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+import socket
+
+HOST = "127.0.0.1"  # Standard loopback interface address (localhost)
+PORT = 65432  # Port to listen on (non-privileged ports are > 1023)
+
+with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: #AF_INET for IPv4, SOCK_STREAM for TCP
+    s.bind((HOST, PORT)) # Bind the socket to the address and port
+    s.listen() # Enable the server to accept connections
+    print(f"Server listening on {HOST}:{PORT}")
+    conn, addr = s.accept() # Wait for a connection
+    with conn: # conn is a new socket object usable to send and receive data
+        print(f"Connected by {addr}") # Accept the connection
+        while True: # Loop to handle incoming data
+            data = conn.recv(1024) # Receive data from the connection
+            if not data:
+                break
+            conn.sendall(data) # Echo the received data back to the client