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Webserver

Project Structure

To run these projects, organize your files as follows:

go-server/
├── main.go
└── static/
    ├── index.html
    └── form.html

python-server/
├── app.py
└── templates/
    ├── index.html
    └── form.html
  1. Shared HTML Files These are the static files used by both servers.
index.html
<!DOCTYPE html>
<html>
<head>
    <title>Static Website</title>
</head>
<body>
    <h2>Static Website</h2>
    <p>Welcome to the home page!</p>
</body>
</html>
form.html
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
</head>
<body>
    <div>
        <form method="POST" action="/form">
            <label>Name</label><input name="name" type="text" value="" />
            <label>Address</label><input name="address" type="text" value="" />
            <input type="submit" value="submit" />
        </form>
    </div>
</body>
</html>

Implementation

main.go
package main

import (
    "fmt"
    "log"
    "net/http"
)

func formHandler(w http.ResponseWriter, r *http.Request) {
    if err := r.ParseForm(); err != nil {
        fmt.Fprintf(w, "ParseForm() err: %v", err)
        return
    }
    fmt.Fprintf(w, "POST request successful\n")
    name := r.FormValue("name")
    address := r.FormValue("address")
    fmt.Fprintf(w, "Name = %s\n", name)
    fmt.Fprintf(w, "Address = %s\n", address)
}

func helloHandler(w http.ResponseWriter, r *http.Request) {
    if r.URL.Path != "/hello" {
        http.Error(w, "404 not found.", http.StatusNotFound)
        return
    }
    if r.Method != "GET" {
        http.Error(w, "Method is not supported.", http.StatusNotFound)
        return
    }
    fmt.Fprintf(w, "hello!")
}

func main() {
    fileServer := http.FileServer(http.Dir("./static"))
    http.Handle("/", fileServer)
    http.HandleFunc("/form", formHandler)
    http.HandleFunc("/hello", helloHandler)

    fmt.Printf("Starting server at port 8080\n")
    if err := http.ListenAndServe(":8080", nil); err != nil {
        log.Fatal(err)
    }
}
app.py
from flask import Flask, render_template, request

app = Flask(__name__)

# Route for the Root (serves index.html)
@app.route('/')
def index():
    return render_template('index.html')

# Route for /hello
@app.route('/hello')
def hello():
    return "hello!"

# Route for /form (handles both GET to show and POST to process)
@app.route('/form', methods=['GET', 'POST'])
def form_handler():
    if request.method == 'POST':
        name = request.form.get('name')
        address = request.form.get('address')
        return f"POST request successful<br>Name = {name}<br>Address = {address}"
    return render_template('form.html')

if __name__ == '__main__':
    print("Starting server at port 8080")
    app.run(port=8080)

How to Run

Go: Open your terminal in the go-server folder and run:

go run main.go

Python: Ensure Flask is installed (pip install flask), then run:

python app.py

Both servers will be accessible at http://localhost:8080. You can visit /hello to see the greeting or /form to test the data submission