Saturday, February 9, 2008

Multiplazione and doors

Every active logon TCP is associated to a socket opened from a process (the socket is the instrument offered from the operating system to the applications in order to use the functionalities of the net). TCP is taken care to shunt the data between the active logons and the relati to you processes. For this, to ciascuna logon between two host it comes associated a door number on everyone of the two hosts, that bit (1-65535 is an entire one without sign to 16), contained in the appropriate field of the header.

A logon TCP therefore will be identified from IP addresses of the two hosts and from the doors used on the two hosts.

In this way, a serveur can accept logons from more client at the same time through or more doors, a client it can establish more logons towards more destinations, and is also possible that a client it at the same time establishes more independent logons towards the same door of the same serveur.

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