client.py

def start_client():
    import socket
    import os
    import tkinter as tk
    from tkinter import filedialog, scrolledtext, messagebox
    import struct

    def send_file():
        file_path = filedialog.askopenfilename()
        if not file_path:
            return

        ip = ip_entry.get().strip()
        if not ip:
            messagebox.showwarning("Missing IP", "Enter the receiver's IP address.")
            return

        try:
            client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            client.connect((ip, 5001))
            log_box.insert(tk.END, f"Connected to {ip}\n")

            # Prepare filename
            filename = os.path.basename(file_path)
            filename_bytes = filename.encode()
            filename_len = struct.pack('!I', len(filename_bytes))

            # Send filename length and filename
            client.sendall(filename_len)
            client.sendall(filename_bytes)

            log_box.insert(tk.END, f"Sending file: {filename}\n")

            # Send file content
            with open(file_path, 'rb') as f:
                while True:
                    data = f.read(4096)
                    if not data:
                        break
                    client.sendall(data)

            log_box.insert(tk.END, f"File '{filename}' sent successfully!\n\n")
            client.close()

        except Exception as e:
            messagebox.showerror("Send Error", f"Error: {e}")

        log_box.see(tk.END)

    root = tk.Tk()
    root.title("File Sender")

    tk.Label(root, text="Receiver IP Address:").pack(pady=(10, 0))
    ip_entry = tk.Entry(root, width=40)
    ip_entry.pack(pady=(0, 10))

    send_button = tk.Button(root, text="Choose File and Send", command=send_file)
    send_button.pack(pady=5)

    log_box = scrolledtext.ScrolledText(root, width=50, height=15)
    log_box.pack(padx=10, pady=10)

    root.mainloop()

if __name__ == "__main__":
    start_client()