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Nätverksfördröjningar vid tillämpning av SOAPBjörk, Stefan January 2002 (has links)
<p>Denna studie undersöker om, och isåfall hur, nätverksfördröjningar uppstår då små SOAP-meddelanden skickas över TCP/IP. För att utföra detta skapades ett litet nätverk och i det genomfördes mätning av svarstider för två olika SOAP-implementationer, Apache SOAP och Microsoft SOAP Toolkit. Resultaten från mätningarna analyserades och visade att det uppstår nätverksfördröjningar då små SOAP-meddelanden skickas över TCP/IP. Både Apache SOAP och Microsoft SOAP Toolkit uppvisade olika strategier i nätverkskommunikationen vilket påverkade svarstider. För Apache SOAP uppstod fördröjningar vid varje SOAP-anrop, oberoende av storleken på meddelandet som returnerades, medan Microsoft SOAP Toolkit undvek nätverksfördröjningar då meddelandet som returnerades var tillräckligt stort.</p>
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Serialisering av API mellan PC och inbyggda systemAndersson, Jonas January 2010 (has links)
<p>Detta examensarbete behandlar problemet med att testa inbyggda system i kontorsmiljö. För att göra detta och därigenom kunna göra anrop på det inbyggda systemets API, måste detta anrop skickas som ett seriellt datapaket över en seriell kommunikationslänk som TCP/IP.</p><p>Detta möjliggjordes genom att först upprätta en kommunikationslänk med protokollet TCP/IP, där användningen av POSIX-sockets tillämpades. För att packa ner och packa upp funktionsanropen till seriell data implementerades ett protokoll som följdes när detta utfördes. Hantering av data i samband med överföring över TCP/IP sköttes av ett protokoll vid namn BGSFP, ett protokoll som bygger på det tidigare protokollet TSFP.</p>
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Application Specific Optimization of Ethernet Cluster CommunicationTreydte, Matthias 10 October 2007 (has links) (PDF)
In this diploma thesis, the implementation of a networking protocol, which is
adopted from a previous work, is refined to a state where it is ready for production
use. The protocol is tailored for the specific needs in a cluster environment which
uses standard ethernet as the interconnection hardware. Thereby focuses is on
developing and implementing a flow control which is very lightweigt in terms of
processing overhead and copes the challenges of such a tightly coupled network
gracefully. Second, the Log(G)P models for parallel computation are examined and
it is shown that they do not give a usable definition of the overhead or latency
parameters for protocols whose overhead is O(message size)–instead, the P-LogP
model is used to characterize the protocol and for comparisons to the TCP/IP
protocol suite. Last, it is demonstrated that the protocol gives usable results with
real-world scientific applications.
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Loss strategies for competing TCP/IP connectionsAltman, Eitan El-Azouzi, Rachid. Ros, David Tuffin, Bruno January 2006 (has links) (PDF)
Rapport de recherche N°5100. / Titre provenant de l'écran-titre. 26 p. Bibliogr. p. 19-20.
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Measurement of Windows streaming mediaNichols, James G. January 2004 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: networks; performance evaluation; streaming media; measurement. Includes bibliographical references (p. 89-93).
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Stochastic models of congestion control in heterogeneous next generation packet networks /Abou-Zeid, Al-Hussein A. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 99-106).
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A framework for reliable multicast protocolRamasubramaniam, Venkata Lakshmanan. January 2002 (has links)
Thesis (M.S.)--University of Florida, 2002. / Title from title page of source document. Includes vita. Includes bibliographical references.
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Best-effort traffic engineering in multiprotocol label switched networksKoehler, Bernd G. 05 1900 (has links)
No description available.
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Analysis on distribution of real-time GNSS data over IP networksYan, Thomas Surya Sanjaya, Surveying & Spatial Information Systems, Faculty of Engineering, UNSW January 2008 (has links)
This thesis examines the current implementations for the distribution of real-time GNSS data over IP networks such as the public Internet, focusing on two essential components of the system, data format and transport protocol. The provision of a suitable data format will allow users to take full advantage of the real-time GNSS data distribution system. Types of GNSS supported, message sizes, data rates, data precision levels, hardware and software support and possible future developments are investigated. An analysis is carried out on commonly known GNSS data formats, highlighting the most suitable standard for each evaluation criterion. A similar investigation is carried out on the transport protocols. An analysis is conducted on various design aspects of NTRIP and RT-IGS protocols, covering factors such as data latency, integrity, firewalls and proxy server compatibility and scalability. The analysis also covers the design aspects of the new draft Version 2 of NTRIP. The latter parts of this thesis report on the experiment results aimed at providing assessment of the current level of implementation of NTRIP. Data latency and integrity using NTRIP over the Internet are examined. Their impacts on users applications as the quality of real-time kinematic positioning is assessed. The results show that the performance of the system satisfies the rigorous requirement of the end-user application. The draft version of the new NTRIP indicates that UDP will be also supported. A similar investigation is carried out, providing the first experiment results on the new option. Tests using similar metrics, data latency and integrity, were carried out to verify the inherent differences between TCP and UDP. It was ascertained that, in most cases, UDP does offer improvement in terms of reduced latency over TCP. However this improvement is not significant enough to affect the performance of users applications tested. Compatibility tests were also carried out and the test results show that the new option experiences some compatibility issues with firewalls and wireless networks.
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Congestion control for multicast /Ngo, Van Ngoc. January 2005 (has links)
Thesis (M.Sc.)--York University, 2005. Graduate Programme in Computer Science and Engineering. / Typescript. Includes bibliographical references (leaves 139-145). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss &rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR11871
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