Update README.md

Author: manavmehta

README.md

@@ -1 +1,18 @@
-# ft
+# TCP File Transfer Application
+
+The application has two primary parts - Client and Server - and the reliable transfer is ensured using TCP with help of socket() API specifying SOCK_STREAM.
+
+### The Client’s flow:
+
+* Checks for validity of arguments - needs server’s ip and port to fire up
+* Creates sockfd which controls the flow or the control of the connection
+* Connects socket ref by sockfd to server_addr (address and port specified)
+* Set up data connection in listenfd descriptor and binds the socket to data_addr port
+* Then until user quits, listens to commands, parses it using helpers, and executes them using the respective helper functions
+
+### The Server’s flow:
+* Opens a TCP connection and starts listening to incoming connections
+* Binds the listening file descriptor to the specified port
+* Creates a fork of its process for every incoming connection, closing listenfd for that particular fork
+* Receives client’s data and command
+* Takes the necessary actions