What Happens If Part Of An Ftp Message Is Not Delivered To The Destination?

FTP (file transfer protocol) as it is suggested in the name that it is the protocol used for sending the files. It has its process of working. The protocol has its delivery process we will discuss them in this letter but I want to say that everything has its drawbacks that’s why when the message is transferred by using the methods some part of the message was lost due to different circumstances.

And people are inquisitive to know that what will happens when the FTP part were not be able to reach the destination? Let’s begin to understand the concept of the FTP and its methods and you will also be able to get the answer to the question if you can understand its working process.

FTP

It is the protocol of the network which is used for the file transmission between the computers linked with the TCP/IP protocol is considered as the application layer protocol in the TCP/IP model.

The computers in the transmission area of two one is the end-user also known as the user host while the other one is the server or called the remote host. The server computer is to run FTP while the client used the services offered by the protocol .and for the transmission the host and client need to be connected to the network with proper configuration.

FTP data transfer mode 

The data in the FTP protocol is transferred in three different ways which are given below:

• Stream mode: the data is transferred in continuous streaming and the FTP is free from doing other processing because all processing is transferred to TCP.
• Block mode: FTP places the records into different blocks after then sent them to the TCP protocol.
• Compress mode: It is the extension of the clock mode along with compression of data with run-length encoding.

Working of FTP 

Working of the client server-based protocol is described below:

• There is a need for the user to log in to the server of the FTP some users may access the data without login in from the anonymous FTP.
• When the client requests the file downloading a communication began between the client and the server.
• With the help of the FTP end, the user can download, delete, update the files.

FTP works with either active mode or passive modes:

• Active mode: In this mode, the client computer begins and requests the connection after then the server also creates the connection with the client and the communication held between them.
• Passive mode: In this, the command line channel is in the control of the server, and the information is sent to the clients of its need.

What happens if the message fails to deliver?

Sometimes the part of the FTP message fails to deliver to the destination. And the message might be lost due to the unreliable delivery method in that case the source host sends the message in form of a query to the destination and be able to determine the way to re-sent the lost past of the FTP message or maybe complete message re-resent by the source host.