SOAP Calculator Web Service

A simple SOAP web service that provides calculator operations (addition and subtraction) with both server and client implementations.

Table of Contents

• Features
• Method 1: Using Docker
• Method 2: Direct Installation
• API Documentation
• Testing the Service
• Troubleshooting

Features

• SOAP-based web service
• Calculator operations (add, subtract)
• Interactive client with command-line interface
• Docker support for easy deployment
• Detailed logging of operations

Method 1: Using Docker

Prerequisites

• Docker installed on your system
• Docker Desktop (for Windows/Mac users)

Quick Start with Docker

1. Pull the image:

docker pull adityaindoc/soap-calculator:latest

2. Run the server:

docker run -p 8000:8000 adityaindoc/soap-calculator:latest

The service will be available at:

• SOAP endpoint: http://localhost:8000/calculator
• WSDL: http://localhost:8000/calculator?wsdl

Using Docker Compose

1. Create a docker-compose.yml:

services:
  soap-calculator:
    image: yourusername/soap-calculator:latest
    ports:
      - "8000:8000"
    environment:
      - NODE_ENV=production
    restart: unless-stopped

2. Run with docker-compose:

docker-compose up

Method 2: Direct Installation

Prerequisites

• Node.js (v16 or higher)
• npm (comes with Node.js)

Installation Steps

1. Clone the repository:

git clone https://github.com/adityainhub/wsdl_program.git
cd wsdl_program

2. Install dependencies:

npm install

3. Start the server:

node server.js

The service will be available at:

• SOAP endpoint: http://localhost:8000/calculator
• WSDL: http://localhost:8000/calculator?wsdl

4. In a new terminal, run the client:

node client.js

Using the Client

The client provides a menu-driven interface:

1. Choose operation (1: Add, 2: Subtract, 3: Exit)
2. Enter first number
3. Enter second number
4. View result

Troubleshooting

Docker Issues

1. "Container not starting":

   • Check Docker Desktop is running
   • Verify port 8000 is not in use

   docker logs [container_id]

2. "Cannot connect to service":

   • Ensure correct port mapping
   • Check firewall settings

Direct Installation Issues

1. "Module not found":

   npm install

2. "Port already in use":

   • Change port in server.js
   • Or stop the process using port 8000

Common Solutions

• Restart Docker/Node.js
• Check logs: docker logs [container_id]
• Verify WSDL availability: http://localhost:8000/calculator?wsdl