Basics
Reliable Data Transfer
In this section, we consider the problem of reliable data transfer in a general context. This is appropriate…
July 21, 2021 · Rajil TLBasics
Basics
Connectionless Transport: UDP
The Internet makes two transport protocols available to its applications, UDP and TCP. In this section we take a close look…
July 21, 2021 · Rajil TLBasics
Multiplexing and Demultiplexing Applications
In this section we discuss the multiplexing/demultiplexing of messages by the transport layer from/to the application layer. In…
July 21, 2021 · Rajil TLBasics
DNS – The Internet’s Directory Service
We human beings can be identified in many ways. For example, we can be identified by the names…
July 21, 2021 · Rajil TLBasics
Electronic Mail in the Internet
Along with the Web, electronic mail is one of the most popular Internet applications. Just like ordinary “snail…
July 21, 2021 · Rajil TLBasics
File Transfer: FTP
FTP (File Transfer Protocol) is a protocol for transferring a file from one host to another host. The protocol…
July 21, 2021 · Rajil TLBasics
Web Caches
A Web cache – also called a proxy server – is a network entity that satisfies HTTP requests on the behalf of a client.…
July 21, 2021 · Rajil TLBasics
The Conditional GET
By storing previously retrieved objects, Web caching can reduce object-retrieval delays and diminish the amount of Web traffic…
July 21, 2021 · Rajil TLBasics
User-Server Interaction: Authentication and Cookies
We mentioned above that an HTTP server is stateless. This simplifies server design, and has permitted engineers to develop very…
July 21, 2021 · Rajil TLBasics
HTTP Message Format
The HTTP specifications 1.0 ([RFC 1945] and 1.1 [RFC 2068]) define the HTTP message formats. There are two types of HTTP messages, request messages and response messages,…
July 21, 2021 · Rajil TL