README

README.md

@@ -1,2 +1,92 @@
-# httpserver
+# Basic HTTP Server in Go
-A very basic HTTP server made in GO 
+This document explains the functionalities of a basic HTTP server implemented in Go. The server responds to two different routes: `/` and `/hello`.
+
+## Code Overview
+
+### Package and Imports
+
+```go
+package main
+
+import (
+    "errors"
+    "fmt"
+    "io"
+    "net/http"
+    "os"
+)
+```
+
+The server starts by defining the main package and importing necessary libraries:
+
+- errors: For handling errors.
+- fmt: For formatted I/O operations.
+- io: For basic input and output interfaces.
+- net/http: For HTTP client and server implementations.
+- os: For interacting with the operating system.
+
+### Root Handler
+
+```go
+func getRoot(w http.ResponseWriter, r *http.Request) {
+    fmt.Printf("Request received: \n")
+    io.WriteString(w, "This is my first web server. \n")
+}
+```
+The getRoot function handles requests to the root URL (/). It prints a message to the console and responds to the client with a simple message.
+
+### Hello Handler
+
+```go
+func getHello(w http.ResponseWriter, r *http.Request) {
+    fmt.Printf("Hello request received: \n")
+    io.WriteString(w, "Hello, World! \n")
+}
+```
+The getHello function handles requests to the /hello URL. It prints a different message to the console and responds with a "Hello, World!" message.
+
+### Main Function
+
+```go
+func main() {
+    http.HandleFunc("/", getRoot)
+    http.HandleFunc("/hello", getHello)
+
+    err := http.ListenAndServe(":8080", nil)
+    if errors.Is(err, http.ErrServerClosed) {
+        fmt.Printf("Server Closed! \n")
+    } else if err != nil {
+        fmt.Printf("Error: %v \n", err)
+        os.Exit(1)
+    }
+    fmt.Printf("Server started! \n")
+}
+```
+The main function sets up the HTTP server:
+
+- It registers the getRoot handler for the root URL (/).
+- It registers the getHello handler for the /hello URL.
+- It starts the server on port 8080 using http.ListenAndServe.
+- If the server is closed or an error occurs, appropriate messages are printed, and the program exits with a status code of 1.
+
+### Error Handling
+The server uses errors.Is to check if the error returned by http.ListenAndServe is http.ErrServerClosed. If a different error occurs, it prints the error and exits the program.
+
+
+## Running the Server
+To run the server, execute the following command in your terminal:
+    
+```bash
+go run main.go
+```
+
+This will start the server on port 8080. You can access the root URL (`http://localhost:8080/`) and the hello URL (`http://localhost:8080/hello`) in your browser or using a tool like CURL.
+```bash
+curl http://localhost:8080/
+curl http://localhost:8080/hello
+```
+
+The server will respond with the following messages for each route:
+- http://localhost:8080/: Displays "This is my first web server."
+- http://localhost:8080/hello: Displays "Hello, World!"
+