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An enhanced UDP SOAP-Binding for a mobile Web Service based Middleware

Authors
Gehlen, Guido and Aijaz, Fahad and Walke, Bernhard
ComNets, Faculty 6, RWTH Aachen University, Germany Kontakt: Guido Gehlen

In Proceedings of IST Mobile Summit 06, p. 8, Myconos, Greece, 2006.
Publication Date: Jun, 2006
On page(s):8
ISBN:

Abstract
A Web Service based Middleware for mobile applications is a promising platform to accelerate the application development for mobile systems. Currently, the Web Service protocol stack is using by default the Simple Object Access Protocol (SOAP) on top of HTTP. Since HTTP is using TCP, the round-trip time of aWeb Service call is long due to the connection establishment of Transport Control Protocol (TCP) (three-wayhandshake) and the ARQ protocol (slow-start phase). Some applications do not require delivery guarantees of TCP. For these applications an unreliable transport of SOAP messages over the User Datagram Protocol (UDP) is a natural choice. If an application needs a reliable transport of SOAP messages a simple Automatic Repeat Request (ARQ) mechanism on top of UDP is better choice. This reliable UDP binding can be used as a supplement for the default HTTP binding in order to deal with the mentioned lacks of TCP. The session management of HTTP is substituted by introducing Web Services Addressing properties within the SOAP header. This paper will present the architecture and the realization of an unreliable and reliable UDP SOAP binding. Both bindings will map two basic MEP to UDP services. The reliable binding encapsulates a selective-repeat (explicit request) ARQ protocol on top of UDP which ensures even the transmission of SOAP messages over several datagrams. Some use cases and examples motivate the work and stress the importance according to the mobile middleware.

Author Keywords
Guido Gehlen, Fahad Aijaz, Bernhard Walke

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Bibtex

@INPROCEEDINGS{guge-ISTSummit06,
  AUTHOR          = {Gehlen, G. and Aijaz, F. and Walke, B.},
  TITLE           = {An enhanced UDP SOAP-Binding for a mobile Web Service based Middleware},
  YEAR            = {2006},
  MONTH           = {Jun},
  PAGES           = {8},
  ADDRESS         = {Myconos, Greece},
  BOOKTITLE       = {Proceedings of IST Mobile Summit 06},
  INSTITUTION     = {IST},
  AFFILIATION     = {ComNets, Faculty 6, RWTH Aachen University, Germany},
  KEYWORDS        = {Guido Gehlen, Fahad Aijaz, Bernhard Walke},
  LANGUAGE        = {english},
  LOCATION        = {Myconos, Greece},
  ANNOTE          = {Mobile Web Services, SOAP, UDP SOAP binding},
  URL             = {http://www.comnets.rwth-aachen.de} 
}

Signature in CN-Library = {Qe 020 (2006)}

Letzte Änderung: 8.05.2008 12.16