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Forum Discussion

superhero_36324's avatar
superhero_36324
Icon for Nimbostratus rankNimbostratus
Jun 04, 2018

What is the connection-transaction-request-session-

I would like to know about word as the below -connection -transaction -request -session   How to difference ?  
application delivery
BIG-IP
youssef1's avatar
youssef1
Icon for Cumulonimbus rankCumulonimbus
Jun 04, 2018

Hi,

 

So first of explain what is connection and session. let's define first the term Flow.

 

The definition of a Flow is historically accepted as:

 

A unidirectional sequence of packets between 2 network endpoints that have the following 7 things in common:

 

  • Source IP address
  • Destination IP address
  • L3 Protocol type
  • Source port
  • Destination port
  • Tos (Type of Service)
  • Input interface

The terms Connection and Session can have many different meanings depending on the framework that they are used, but it can be said that:

 

  • Connection: A bidirectional Flow (Connection will have two flows - forward and reverse flows.)

  • Session: Many connections between the same source and same destination

     

  • Transaction is nothing but a group of requests in web terminology. transactions only encapsulate requests into a group e.g. a login operation which involves 5 http requests can be group together into a single transaction by me

     

  • Request is formal http request we do as ussual, transaction is considered as a sequence of requests.