sharmilathirumalai / tcp-socket Goto Github PK

The task is to build server for the defined protocol "Order3901/1.0" to interact with northwind client to place order by using socket programming.

• Only one client is allowed to interact with server at an instance.
• Server needs to be restarted when client shutdowns.

The main server starting point.

Methods

1. Server Contructor defining all the required params (like port) to start a server.

2. pullIncomingMessage Reads the incoming message from socket buffer

Processes the incoming message and writes the ouput in the socket buffer.

Methods

1. incomingMessage Process the incoming message and decodes the header values. Checks for valid incoming message throws exception if error exists.

2. processBody Reads the body content based on the header's content-length.

3. performOperation Checks for valid user before performing any operation. Performs the given operation and handles the state exceptions. Handles any operation specific exception cases.

4. WriteOutgoingMessage Writes the ouput to the ouput socket buffer from which client reads.

5. shutdownConnection Clears all the user and order details

Has username, password and database for identity purpose.

Has database operations and computations for northwind.

Methods

1. authenticate: Checks for valid user using lastname and dateofbirth
2. placeOrder: Places the given order; Also checks for any invalid cases and throws exception. Inserts orderdetails on successfull order placement.
3. listElements: Lists the customer, products and products in the order based on the target
4. checkProduct: Checks whether the product added in current order is valid

POJO class for storing order details

POJO class for storing user and session details

1. Generate random String of given size in Java. (2018, December 11). Retrieved from https://www.geeksforgeeks.org/generate-random-string-of-given-size-in-java/