Self-Organizing Publish/Subscribe on the Network Edge

In a publish/subscribe protocol such as MQTT, Internet-of-Things (IoT) devices communicate as follows. A device with a message pertaining to a certain topic publishes the message to a cloud-based server. A device that subscribes to the topic receives messages pertaining to the topic from the cloud-based server. The traditional publish/subscribe protocol fails if the internet is unavailable. This disclosure describes techniques for publish/subscribe messaging without the need for a central coordinating server. A subscriber translates the topic of interest to a multicast IP address. To publish a message, the publisher simply sends a UDP packet with the message content to that address, and it is delivered to all listening subscribers. Inter-device communication is thereby made robust to internet connectivity failures

Бібліотека методів С++ для роботи з сервером електронної пошти за протоколом ІМАР4

В пропонованій дипломній роботі розроблено програмну бібліотеку методів для реалізації протоколу Internet Message Access Protocol 4rev1 мовою C++. В результаті було розроблено бібліотеку методів на основі стандартних команд протоколу Internet Message Access Protocol 4rev1, які дають максимальні можливості для роботи даного протоколу. Метою роботи є розробка бібліотеки, яка, при її підключенні до програми чи іншого програмного продукту буде коректно виконувати роботу поштового протоколу Internet Message Access Protocol 4rev1. Розроблена система призначення для підключення її до інших систем та програм, як модуля для реалізації поштового протоколу.In the offered diploma work the software library of methods developed in C ++ language for realization of the Internet Message Access Protocol 4rev1 protocol. The purpose of this work is to develop a library that, when connected to a program or other software product, will correctly perform the work of the Internet Protocol Access Protocol 4rev1. As a result, a library of methods was developed based on the standard commands of the Internet Message Access Protocol 4rev1, which provide maximum opportunities for the operation of this protocol. A destination system has been developed to connect it to other systems and programs as a module for implementing the Internet Message Access Protocol 4rev1.В предлагаемой дипломной работе разработана программную библиотеку методов для реализации протокола Internet Message Access Protocol 4rev1 на языке C++. В результате был разработан библиотеку методов на основе стандартных команд протокола Internet Message Access Protocol 4rev1, которые дают максимальные возможности для работы данного протокола. Целью работы является разработка библиотеки, которая, при ее подключении к программе или иного программного продукта будет корректно выполнять работу почтового протокола Internet Message Access Protocol 4rev1. Разработанная система назначения для подключения ее к другим системам и программ, как модуля для реализации почтового протокола

Message routing between the As/400 token ring network and the Internet

A working model of the message exchange system is designed and developed for the AS/400 systems, a type of mid-range computer developed by IBM, thus enabling the Message Routing between the AS/400 Token Ring Network and the Internet. The routing system accommodates the in-built messaging function in the midrange computer, hence providing a common familiar interface to the user. The message system typically includes a router and an intermediate host system connected to a computer which provides the access to the Internet (technically referred as Internet Gateway). The router becomes the bridging unit between the Internet and the midrange host. The router uses two different protocols to communicate with the midrange host and the Internet. However the message exchanges are never affected by these differences in the protocol, since they are accomplished at a higher level of communication

Survey of Network Protocols

IPv4 is the network protocols of the present Internet, which is characterized by the Internet  Engineering Task Force (IETF). Network protocols characterize guidelines, polices and traditions for communication between system devices. Every advanced protocol for computer organization utilizer a packet switching system to send and get the message. The protocols are intended to conquer the activities of any enemy that can lose the sent message, discretionarily change the fields of the sent message, and replay old messages. In the web, the colossal measure of information and the immense number of various protocols makes it perfect as a high-bandwidth speed vehicle for undercover communication. This article is an overview of the current methods for making the covert channels. Weadditionally gave a diagram of wide kinds of network protocol