Download e-book for iPad: Boost.Asio C++ Network Programming Cookbook by Dmytro Radchuk

By Dmytro Radchuk

ISBN-10: 1783986549

ISBN-13: 9781783986545

Beginning with recipes demonstrating the execution of simple Boost.Asio operations, the e-book is going directly to supply ready-to-use implementations of purchaser and server purposes from basic synchronous ones to strong multithreaded scalable recommendations. eventually, you're awarded with complex themes resembling imposing a talk program, enforcing an HTTP patron, and including SSL help. all of the samples offered within the e-book are able to be utilized in genuine initiatives simply out of the box.

As good as first-class functional examples, the ebook additionally comprises prolonged supportive theoretical fabric on allotted software layout and construction.

What you'll learn:
- develop your operating wisdom of 1 of the main respected C++ networking libraries―Boost.Asio
- make yourself familiar with the fundamentals of TCP and UDP protocols
- Create scalable and highly-efficient consumer and server applications
- comprehend the idea at the back of improvement of disbursed applications
- elevate the protection of your dispensed purposes by means of including SSL support
- enforce a HTTP patron easily
- Use iostreams, scatter-gather buffers, and timers

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Additional resources for Boost.Asio C++ Network Programming Cookbook

Example text

How to do it… The following algorithm describes steps required to perform in a client application in order to resolve a DNS name to obtain IP addresses (zero or more) of hosts (zero or more) running the server application that the client application wants to communicate with: 1. Obtain the DNS name and the protocol port number designating the server application and represent them as strings. 2. Create an instance of the asio::io_service class or use the one that has been created earlier. 3. Create an object of the resolver::query class representing a DNS name resolution query.

Boost::system::error_code ec; // Step 5. resolve(resolver_query, ec); // Handling errors if any. = 0) { // Failed to resolve the DNS name. Breaking execution. value() << ". = it_end; ++it) { // Here we can access the endpoint like this. asio::ip::udp::endpoint ep = it->endpoint(); } return 0; } 24 Chapter 1 See also ff The Creating an endpoint recipe provides more information on endpoints ff For more information on DNS and domain names, refer to the specification of the system that can be found in the RFC #1034 and RFC #1035 documents Binding a socket to an endpoint Before an active socket can communicate with a remote application or a passive socket can accept incoming connection requests, they must be associated with a particular local IP address (or multiple addresses) and a protocol port number, that is, an endpoint.

This call switches the acceptor socket into the state in which it listens for incoming connection requests. Unless we call the listen() method on the acceptor object, all connection requests arriving at corresponding endpoint will be rejected by the operating system network software. The application must explicitly notify the operating system that it wants to start listening for incoming connection requests on specific endpoint by this call. 37 The Basics The argument that the listen() method accepts as an argument specifies the size of the queue maintained by the operating system to which it puts connection requests arriving from the clients.

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Boost.Asio C++ Network Programming Cookbook by Dmytro Radchuk


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