Application layer Protocol

Question

Which of the following is/are stateful application layer protocol?

(i) HTTP

(ii) FTP

(iii) TCP

(iv) POP3

Comments

yes but  since pop3 is statefull i write like that only, :o i changed

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Hello anu

Means when you visit any site like amazon then they keep track your browsing history and show you some suggestions.

i don't think , that is what stateful means. we get connect to commercial websites over http and http is stateless as you said. another things how they collect our data is very complicated, facebook can even know last day you visited some shopping mall and so next day when you will browse it , it will show you all advertisement related to items that, that shopping mall contains , so that it will attract you to purchase online from it's advertisement. they scan our cache , that contains useful information.

https://gateoverflow.in/171175/self-doubt#c171239

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According to what I have collected about statefull is that. In statefull protocol, when client request a connection to the server, server along with connection allocate resorces to that client, and maintain the records for all its allocated resorces. Such resources also include resources required in sliding window protocol TCP which allocates buffer to the client along with connection.

Where as in stateless such records need not to maintain.

But I am still looking for more info about it. Additional info besides above info will be appreciated.

Answer 1

Statefull means it will record the activities log about the client.

stateless means it will not log anything about clients.

In HTTP there is no need to log the information just server will send the pages requested

If HTTP wants to record activities it will be done by using cookies.

But in FTP there need to log the info of client and his activities like which user has done access of files, store of files  etc.,

TCP is transport layer protocol there is no relation (since given application layer protocols in question).

POP3 is used to read mails.

Comments

All reliable protocols are Stateful, And TCP is also a Stateful protocol.

ref :- https://en.wikipedia.org/wiki/Stateless_protocol

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thank u