FTP file transfer study

A comparative File transfer study over using using Socket Programming (ftplib and pyftpdlib) and FileZilla like applications.

Author: Swapneel01

01 Message Transfer/Client/Client_Console.PNG

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+from socket import *
+# enables to create sockets
+serv_addr = "192.168.1.15"
+# IP address of the sever
+serv_port = 8000
+# Port number of the server is given a 16 bit number    
+client_sock = socket(AF_INET,SOCK_STREAM)
+#The client's socket is created, it will generate a random 16 bit number. First parameter indicates that the underlying network is IPv4, 2nd parameter indicated that it is a TCP socket
+client_sock.connect((serv_addr,serv_port))
+#The client establishes a TCP connection between the client and server before sending data to the server
+msg = input("Enter the text message")
+#The client will be asked to input a line until the user ends the line by a carriage return
+client_sock.send(msg.encode())
+#Sends the encoded string msg through the client's socket, into the TCP connection.
+mod_msg = client_sock.recv(2048)
+#When characters arrive from the server, they get placed into the string mod_msg.
+print("From Server:", mod_msg.decode())
+#The message placed in the mod_msg variable is decoded.
+client_sock.close()
+#Closes the socket, hence closes the TCP connection between the client and the server

01 Message Transfer/Client/client_capture.png

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+from socket import *
+serv_addr = "192.168.1.15"
+serv_port = 8000
+serv_sock = socket(AF_INET,SOCK_STREAM)
+serv_sock.bind((serv_addr,serv_port))
+serv_sock.listen(1)
+print("The server is ready to receive")
+while 1:
+     conn_sock,client_addr = serv_sock.accept()
+     print("Got connection from", client_addr)
+     # print("message",conn_sock)
+     msg = conn_sock.recv(2048)
+     # print("message",msg)
+     print(msg.decode())
+     mod_msg = msg.upper()
+     conn_sock.send(mod_msg)
+     conn_sock.close()

01 Message Transfer/Client/tcp_client.pcapng

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