Welcome!

Open Source Cloud Authors: Liz McMillan, Zakia Bouachraoui, Pat Romanski, Elizabeth White, Yeshim Deniz

Related Topics: Microservices Expo, Java IoT, Microsoft Cloud, Open Source Cloud, Machine Learning , Agile Computing

Microservices Expo: Blog Feed Post

Review of HTTP 2.0 – The Ever-Changing Web We Live In

Here’s a few definitions to get you up to speed

Review of HTTP 2.0 – The Ever-Changing Web We Live In
By: Aaron Croyle

You may have heard recently that Facebook will be implementing SPDY. In that light I’d like to give you a basic understanding of the upcoming improvements to HTTP (HyperText Transfer Protocol). As you probably know, this is the protocol that moves most of the HTML documents and images around the web.

Here’s a few definitions to get you up to speed:

HTTP/2.0
This is the new version of HTTP currently in development by the httpbis working group of the IETF. The last update was HTTP 1.1 as described in RFC 2616 in 1999.

TLS
Transport Layer Security is an upgrade to SSL v3.0 (Secure Sockets Layer). It operates at the transport layer to encrypt application-specific protocols such as HTTP, FTP, SMTP, etc.

TLS NPN
Next Protocol Negotiation is an extension to TLS which allows the application layer to negotiate which protocol should be preformed over the secure connection in a manner which avoids additional round trips and which is independent of the application layer protocols.

HTTP/1.1 Upgrade Header
The Upgrade general-header allows the client to specify what additional communication protocols it supports and would like to use if the server finds it appropriate to switch protocols.

There are a few competing specs attempting to become blessed by the IETF as HTTP/2.0. SPDY (by Google), and HTTP Speed+Mobility (by Microsoft) are the leaders, along with Network-Friendly HTTP Upgrade. So far, only SPDY has seen real world implementation. Each are described below:

SPDY
SPDY improves browsing in two ways: 1) SSL encryption is forced for all sites 2) Simply put, it’s just plain faster. It has the largest user base of the three HTTP/2.0 proposals and is included in Firefox 13 (June 2012) and Google Chrome (since Chrome 11 in April 2011). It’s reported that Amazon uses SPDY between the Kindle Fire Silk browser and their EC2 cloud rendering engines.

HTTP Speed+Mobility
Microsoft’s own alternative to SPDY. “The main departures from SPDY are to address the needs of mobile devices and applications.”

Network-Friendly HTTP Upgrade
Immature spec. Lacks client implementations. Focus is on reduction of header overhead by binary encoding and header reuse within streams. Note that its incompleteness was intentional as it was not meant to be a complete proposal, but rather to be used to study alternative compression and upgrade schemes.

Feature Comparison

SPDY HTTP Speed+Mobility Network-Friendly HTTP Upgrade
Header Compression Yes -
Mandatory use of zlib compression
Yes -
But provides a Flag to disable compression of the header block.
Yes -
Header names binary encoded. Grouping of headers that would be common to all messages on a single connection.
Multiplexing
- Pipelining multiple transfers on a single connection
Yes Yes Yes
Transport Layer Encryption Not required,
but current implementations use TLS to encrypt transport
Required to be optional Not Addressed
Zero Latency Upgrade Not required,
but current implementations use TLS NPN to achieve this
No -
Additional round trip required for the Upgrade header
No -
Additional round trip required for the Upgrade header
Per-request flow control -
Each stream in a multiplexed connection can manage the rate at which data flows
Supported in SPDY/3 Supported Missing, but TBD
Server Push Yes Client must opt to enable No

Read the original blog entry...

More Stories By Hurricane Labs

Christina O’Neill has been working in the information security field for 3 years. She is a board member for the Northern Ohio InfraGard Members Alliance and a committee member for the Information Security Summit, a conference held once a year for information security and physical security professionals.

IoT & Smart Cities Stories
Nicolas Fierro is CEO of MIMIR Blockchain Solutions. He is a programmer, technologist, and operations dev who has worked with Ethereum and blockchain since 2014. His knowledge in blockchain dates to when he performed dev ops services to the Ethereum Foundation as one the privileged few developers to work with the original core team in Switzerland.
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a mul...
René Bostic is the Technical VP of the IBM Cloud Unit in North America. Enjoying her career with IBM during the modern millennial technological era, she is an expert in cloud computing, DevOps and emerging cloud technologies such as Blockchain. Her strengths and core competencies include a proven record of accomplishments in consensus building at all levels to assess, plan, and implement enterprise and cloud computing solutions. René is a member of the Society of Women Engineers (SWE) and a m...
If a machine can invent, does this mean the end of the patent system as we know it? The patent system, both in the US and Europe, allows companies to protect their inventions and helps foster innovation. However, Artificial Intelligence (AI) could be set to disrupt the patent system as we know it. This talk will examine how AI may change the patent landscape in the years to come. Furthermore, ways in which companies can best protect their AI related inventions will be examined from both a US and...
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, discussed how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team at D...
Bill Schmarzo, Tech Chair of "Big Data | Analytics" of upcoming CloudEXPO | DXWorldEXPO New York (November 12-13, 2018, New York City) today announced the outline and schedule of the track. "The track has been designed in experience/degree order," said Schmarzo. "So, that folks who attend the entire track can leave the conference with some of the skills necessary to get their work done when they get back to their offices. It actually ties back to some work that I'm doing at the University of San...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...
Bill Schmarzo, author of "Big Data: Understanding How Data Powers Big Business" and "Big Data MBA: Driving Business Strategies with Data Science," is responsible for setting the strategy and defining the Big Data service offerings and capabilities for EMC Global Services Big Data Practice. As the CTO for the Big Data Practice, he is responsible for working with organizations to help them identify where and how to start their big data journeys. He's written several white papers, is an avid blogge...
Dynatrace is an application performance management software company with products for the information technology departments and digital business owners of medium and large businesses. Building the Future of Monitoring with Artificial Intelligence. Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more busine...
Enterprises have taken advantage of IoT to achieve important revenue and cost advantages. What is less apparent is how incumbent enterprises operating at scale have, following success with IoT, built analytic, operations management and software development capabilities - ranging from autonomous vehicles to manageable robotics installations. They have embraced these capabilities as if they were Silicon Valley startups.