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OpenBSD, the elegant, highly secure Unix-like operating system, is widely used as the basis for critical DNS servers, routers, firewalls, and more. This long-awaited second edition of Absolute OpenBSD maintains author Michael Lucas's trademark straightforward and practical approach that readers have enjoyed for years.
You'll learn the intricacies of the. Practical explanations are given of Microsoft's networking APIs. Computer Networks: A Systems Approach, Fifth Edition, explores the key principles of computer networking, with examples drawn from the real world of network and protocol design.
Using the Internet as the primary example, this best-selling and classic textbook explains various protocols and networking technologies. The systems-oriented approach encourages students to. On its own, C simplifies network programming. Includes completely new and expanded sections that address the IPv6 network environment, defensive programming, and the select system call, thereby allowing the reader to program in accordance with the most current standards for internetworking.
Streamlined and concise tutelage in conjunction with line-by-line code commentary allows readers to quickly program web-based applications without having to wade through unrelated and discursive networking tenets. Author : Kenneth L. Later chapters teach you to implement more specialized functionality; incisive discussions of programming constructs and protocol implementations equip you with a deeper understanding that is invaluable for meeting future challenges.
No other resource presents so concisely or so effectively the exact material you need to get up and running with Java sockets programming right away. Provides tutorial-based instuction in key sockets programming techniques, focusing exclusively on Jva and complemented by example code.
Includes references to the relevant Java class libraries that often go beyond the "official" Java documentation in clarity and explanation. Also eine wichtige Programmiertechnik, die es zu erlernen gilt, wenn man den Zugang zum Internet verstehen will. Author : David B. Candace Leiden und Marshall Wilensky entzaubern die verborgene Welt hinter dem Web und zeigen Ihnen, wie logisch die Protokolle im Internet aufgebaut sind. Die im Buch vorgestellten Anwendungen sind schlank, d.
Author : Jon C. Nonetheless, many network programmers recognize that their applications could be much more robust. On the sender side, a message is broken in various transmissible fragments under the process of Segmentation. Each segment has its own sequence number. This number is helpful for this layer in reassembling the messages. When the message arrives at the destination side, it is reassembled using the sequence numbers in the correct way. Also, if any packets were lost in transmission, they are identified and replaced by this layer.
It contains a Connectionless and Connection-Oriented Protocol. They have already been discussed. In the network, multiple packets from diverse applications are transmitted across a network. These packets need very dedicated control mechanisms.
This layer accepts packets from different processes, differentiates them using their port number, and passes them to the network layer after adding proper headers. Flow control basically means a sender is not overwhelming a receiver by sending packets faster than the receiver can consume. It prevents loss of data in the case of a fast sender and slow receiver with the help of some flow control techniques. A protocol such as the Sliding Window protocol, for instance, is used to achieve flow control.
In this protocol, a receiver sends a window back to the sender informing it of the size of data it can receive. Buffering simply means that the computers reserve enough buffer space that bursts of incoming data can be held until processed.
No attempt is made to actually slow down the transmission rate of the sender of the data. Congestion avoidance is the second method of flow control. The computer receiving the data notices that its buffers are filling.
This causes either a separate PDU Protocol Data Unit or field in the header, to be sent toward the sender, signaling the sender to stop transmitting. The third category of flow-control methods is called windowing.
A window is the maximum amount of data the sender can send without getting an acknowledgment. If no acknowledgment is received by the time the window is filled, then the sender must wait for an acknowledgment.
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