Web I - 05 - HTTP Protocol

The presentation tells about performing cross domain ajax request. Subject included principles of preflight requests and limitations of cross origin resource sharing (CORS) policy. You will be able to find implementation examples for frontend (JavaScript, jQuery, AngularJS) and for backend (.Net, Ruby on Rails). Browser compatibility is covered in section ‘Limitation in IE 8,9‘ and there shown possible workarounds. And finally there are couple words about Content Security Policy – the latest approach in Web Application Security.

CORS (Cross-Origin Resource Sharing) allows cross-origin HTTP requests from a browser. It works by using additional HTTP headers to tell browsers if a server allows requests from a different origin. Simple requests like GET, HEAD, and POST are allowed by default, but preflighted requests require the server to specify allowed origins, methods, and headers to the browser. The document provides examples of CORS requests and configurations for enabling CORS on an Apache server.

- HipHop – replacement for Zend PHP - HPHPc and HHVM - Supported OS - Compatibility with PHP: version, extensions - Operational modes: CLI, Server - Configuration features - Performance: capital.ua on Symfony 1.4, Sylius on Symfony 2.3 - HHVM with your project: Vagrant - Popular frameworks and CMS support - Competitors: kPHP

Using CORS (cross origin resource sharing) you can easily and securely to cross site scripting in webapps - less servers and more integration from apis right in the browser This was presented during Web Directions South, 2013, Sydney, Australia.

The document discusses the HTTP request-response cycle. It provides examples of HTTP requests using the GET and POST methods, including the headers used. It also covers HTTP response status codes and the use of cookies in HTTP requests and responses.

This document discusses CommandBox and CFConfig, which are tools for managing ColdFusion servers from the command line. CommandBox allows starting, stopping, and configuring CF servers. CFConfig allows importing, exporting, and transferring ColdFusion server configurations between servers of different versions. It supports settings from Adobe and Lucee servers.

The document provides instructions for a programming assignment to create a web proxy server and client using C. The proxy server should be able to accept requests from a single client, forward the requests to the appropriate web server, cache up to six recent websites, and return the cached page if available. The client runs on one computer and connects to the proxy server running on another computer. Students are asked to comment their code, include a Makefile to compile and clean the code, and a README file describing how to use the code. They should create a zip file of their assignment folder containing these files to submit.

The document contains examples of HTTP requests and responses related to caching and conditional requests. It shows requests for resources with If-Modified-Since and If-None-Match headers, and the corresponding 200 and 304 response codes. It also includes examples of ETag, Last-Modified, Expires and Cache-Control response headers used for caching.

The future of the web is cross-domain, not same origin. Introduction to CORS requests and how they are handled by the browser and the web server.

This document discusses REST (REpresentational State Transfer) and how to implement RESTful services on Android. It begins by defining REST and describing its core concepts like client-server architecture, statelessness, uniform interface, and CRUD (create, read, update, delete) operations. It then covers how to make HTTP requests in Android using libraries like HttpURLConnection and Apache HTTP Client. Helpful libraries for working with REST APIs are also presented, including Gson for JSON parsing and CRest for declarative REST clients. The document emphasizes best practices like performing HTTP calls in a background thread, persisting data to content providers, and minimizing network usage.

This is a talk about misconfigured CORS and internet security in 2016. It was given by Evan Johnson of Cloudflare, at AppSec USA.

Denna presentation visar på ett dataintrång som blivit upptäckt med hjälp av loggning. Vi använder oss av OSSEC, Logstash, Kibana och Elasticsearch.

1. Brief introduction about HTTP request life cycle 2. Main workflow 3. Some basic and classic solutions

The SPDY Protocol is likely going to be the successor of http. This short talk summarizes the most important points and includes a demo on how to migrate a Wordpress blog on httpd.

- CORS (Cross-Origin Resource Sharing) allows resources on a web page to be requested from another domain outside the domain from which the first resource was served. - CORS uses additional HTTP headers to tell browsers to give a web application running at one origin access to selected resources from a different origin. - Developer mistakes can lead to security vulnerabilities like cross-site request forgery if CORS is not implemented correctly, such as specifying '*' for allowed origins, failing to validate origins, or not handling credentials properly.

The document describes the Tiny Web Server, a simple HTTP server that serves static and dynamic content using the GET method. It parses GET requests, determines if the request is for static or dynamic content, opens and reads the requested file or executes the CGI program, and returns the content along with appropriate HTTP response headers. Key components include parsing the URI to extract the filename and CGI arguments, checking for valid files, and using routines like serve_static() and serve_dynamic() to handle different content types.

10 Of The Best Books About TCP/IP And Networking 1.Internet Core Protocols: The Definitive Guide: Help for Network Administrators 2.Effective TCP/IP Programming: 44 Tips to Improve Your Network Programs 3.TCP/IP Explained 4.High-Speed Networks TCP/IP and ATM Design Principles 5.TCP/IP: Architecture, Protocols, and Implementation with IPv6 and IP 6.SNMP, SNMPv2, SNMPv3, and RMON 1 and 2 7.SNMP: A Guide to Network Management 8.TCP/IP Network Administration 9.Teach Yourself Tcp/Ip in 14 Days 10.UNIX Network Programming

C++17 introduced updates to both the C++ language and standard library. For the language, there were around 45 modest proposals that mostly solved frustrations from prior standards. Significant updates to the library included new vocabulary types like std::optional and std::string_view. C++17 also added features like structured bindings, if constexpr, and lambda improvements like constexpr lambdas and capture of *this. The filesystem library was standardized to provide OS-abstraction for file/directory operations.

This document discusses various usability enhancements introduced in modern C++, including C++11/14/17. It covers topics such as auto type deduction, decltype, nullptr, range-based for loops, uniform initialization, lambda expressions, and more. The enhancements aim to improve code readability, reduce errors and increase developer productivity when programming in C++.

The document provides an overview of Bjarne Stroustrup's views on the C++ programming language. Some key points: 1) C++ aims to provide performance, predictability, teachability, and readability while supporting systems programming, embedded systems, large systems, and both experts and novices. 2) C++ offers features like mapping to hardware, classes, inheritance, templates, and generic programming while not requiring a garbage collector for resource management. 3) Resource management in C++ relies on resource handles, RAII, and move semantics rather than a garbage collector. Templates and generic programming are designed to be as efficient and well-specified as traditional code.

This document provides an overview of new features introduced in C++11, including automatic variables, decltype, rvalue references, lambda functions, variadic templates, and the concurrency library. It discusses each feature in detail and provides examples. It also outlines compiler support for C++11 in different versions of Visual Studio and references additional learning resources on C++11.