search query: @keyword smartphone / total: 25
reference: 9 / 25
« previous | next »
Author:Somogyi, Péter
Title:Analysis of server-smartphone application communication patterns
Publication type:Master's thesis
Publication year:2014
Pages:83      Language:   eng
Department/School:Perustieteiden korkeakoulu
Main subject:Tietokoneverkot   (T-110)
Supervisor:Nurminen, Jukka ; Kozsik, Tamás
Instructor:Szalay-Bekõ, Máté
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201409252673
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto  2475   | Archive
Keywords:smartphone
server
real-time data
HTTP polling
long polling
WebSocket
message size
realibility
latency
performance
security
Abstract (eng): The spread of smartphone devices, Internet of Things technologies and the popularity of web-services require real-time and always on applications.
The aim of this thesis is to identify a suitable communication technology for server and smartphone communication which fulfills the main requirements for transferring realtime data to the handheld devices.

For the analysis I selected 3 popular communication technologies that can be used on mobile devices as well as from commonly used browsers.
These are client polling, long polling and HTML5 WebSocket.
For the assessment I developed an Android application that receives real-time sensor data from a WildFly application server using the aforementioned technologies.

Industry specific requirements were selected in order to verify the usability of this communication forms.
The first one covers the message size which is relevant because most smartphone users have limited data plan.
The next part discusses reliability issues of the analyzed technologies covering WebSocket connection drop and proxy server caching.
Latency tests are conducted as well and the final part discusses the security aspects and how the other requirements are affected when encrypted connections are used.

The results show that WebSocket and long polling are relatively good ways to deliver real-time information to smartphone devices.
However, the WebSocket connection can drop unexpectedly due to the lack of keep alive messages which are generally not sent on the network.
Moreover, latency radically increases when secured WebSocket connection is used.
ED:2014-09-16
INSSI record number: 49703
+ add basket
« previous | next »
INSSI