Test Network Access on Transport Layer (TCP/UDP) Ports

[gfcredera]

Description:

This feature implements test scenarios to validate network access between two hosts at the transport layer (TCP/UDP). Specifically, it ensures that hosts can connect to specified ports (e.g., 80, 8080, 443), and validates whether the connection is successful or unsuccessful. Additionally, it should confirm the application layer protocol (e.g., HTTP/HTTPS) running on those ports.

Example Scenario:

Scenario: Host A can connect to host B on TCP/UDP port 80, 8080, 443, 69
    Given host A
    When It connects to host B on port <port> using <transportProtocol>
    Then The connection is successful
    And The application layer protocol is <applicationProtocol>
    Examples:
        | port                  | transportProtocol | applicationProtocol |
        | 80                    | TCP               | HTTP                |
        | 8080                  | TCP               | HTTP                |
        | 443                   | TCP               | HTTPS               |
        | 69                    | UDP               | TFTP                |

Definition of Done:

1. Write a feature file demonstrating the above scenarios.
2. Implement the logic in StepDefinitions.kt to execute the feature file successfully, including:
   • Checking port connectivity (TCP/UDP).
   • Validating the application layer protocol running on the port (e.g., HTTP/HTTPS).

Relevant Information:

For TCP connectivity and protocol validation, the following methods can be used:

1. telnet: Test TCP connectivity to a port.

   telnet remote-host 80

   Use to check if the port is open. Interact with the service to confirm the protocol.

2. nc (Netcat): Versatile tool to test TCP/UDP connectivity and capture service banners.

   nc -v remote-host 80

   Useful for checking port status and capturing server responses.

3. curl: Check if an HTTP service is running on the port.

   curl -I remote-host

   Retrieve HTTP headers to confirm protocol and server type.

4. nmap: Identify the service running on the port.

   nmap -p 80 -sV remote-host

   Detects the application layer protocol and provides version information.

Tasks:

1. Enable port connectivity testing for both TCP and UDP.
2. Validate application layer protocols (e.g., HTTP, HTTPS).
3. Update StepDefinitions.kt to support these scenarios.
4. Write feature file examples for TCP/UDP connectivity and protocol validation.