SOAP-Based Web Service

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A Novel Approach for Performance Estimation of SOAP-based Web Services

A Novel Approach for Performance Estimation of SOAP-based Web Services

Abstract— the demand for technologies that support integration of heterogeneous systems is increasing. Web Service is a rapidly evolving application-integration technology that allows applications in heterogeneous environments to communicate with each other. Web services are mainly realized in two ways -SOAP based services and Restful services. SOAP (simple object access protocol) based services are more powerful and more interoperable. Therefore SOAP-based Web Services are the popular choice for Enterprise applications. Currently, several SOAP-based web service implementations are available. These implementations differ in their performance. A detailed analysis and estimation of performance must be done before adopting a web service implementation. In this paper, we present a novel approach for performance estimation of SOAP-based web services. This approach will help the developer and user of SOAP-based web services to choose the web services implementation that fits to their applications.
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Worst input mutation approach to web services vulnerability testing based on SOAP messages

Worst input mutation approach to web services vulnerability testing based on SOAP messages

Due to the rapid development and wide application of the Internet, use of the service-oriented architecture (SOA) for distributed Web systems has been increasing. Although Web services are the typical form of SOA, and have been the focus of widespread attention and application, their quality and reliability problems represent significant obstacles to further development. Furthermore, due to some Web service characteristics, traditional software testing approaches are not easily applied. Some factors that contribute to the difficulty in application include: (1) different development and application environments (which increases the testing difficulty before the Web services are deployed); (2) the characteristics of Web service distribution, discovery, and dynamic bindings, as well as the uncertain and invisible processes; and (3) the need for a service interface for the Web service design and implementation when applying automatic testing methods and techniques.
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Efficient Prototype of Secure SOAP Message Transmission in Web Service

Efficient Prototype of Secure SOAP Message Transmission in Web Service

So it gets better the flexibility of the structure. Web services are release set (XML, SOAP, and HTTP etc.) based Web applications that work together with other web applications for the principle of exchanging data. Web Services can change existing applications into Web-applications. Web Services utilize SOAP over HTTP protocol for the message passing; therefore you can make use of your existing low cost internet for implementing Web Services. This key reduces the amount of cost in contrast to prior solutions [14].subsequently to SOAP over HTTP; Web Services can be executed on other reliable transport mechanisms like FTP etc.
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Towards Integration of SOAP-Based Web Services and OGC Web Services

Towards Integration of SOAP-Based Web Services and OGC Web Services

In this architecture, OGC services are categorized according to similar functionalities. Figure 3-1 indicates two important characteristics of OGC services. First, the great complexity of Geographic data determines a relatively large number of different service interfaces are defined. The quality of GIS Web Services depends on an easy interaction between and good interoperability of these services determines. Second, Figure 3-1 implicates that OGC Web services has the same Publish-Find-Bind (PFB) SOA architecture as general web services. It is this SOA paradigm that essentially underpins the Computational and Information Viewpoints of OGC Web Services. In OGC documents, it is called the Service Trading model and the equivalent PFB terminology is broker (service registry), requester, and provider [19]. These two characteristics of OGC Web Services from a certain degree have determined the dependence of OGC Web Services on the powerful general Web Services technology. Thus, integration of these two areas is inevitable.
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Web Services: Architectural Styles and Design Considerations for REST API

Web Services: Architectural Styles and Design Considerations for REST API

The second design consideration is security. It was men- tioned earlier that security isn’t paramount in our case as this is a data based service rather than a transaction based one. This is indeed true and this is what made us choose REST over SOAP in the first place. But this security does not correspond to the response transmission security but the security of the system in itself. Data centric platforms and services are often targets for hacks, and we will be building stringent security into the system to curb this. Any developer/client who intends to use the API will need to be in the possession of a unique token. This token will be provided by the system after a simple sign up process. Every request to the API will need to be made with this token, and the response will only be sent back to the genuine and safe users.
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Introduction to Web Services with Java - Free Computer, Programming, Mathematics, Technical Books, Lecture Notes and Tutorials

Introduction to Web Services with Java - Free Computer, Programming, Mathematics, Technical Books, Lecture Notes and Tutorials

Web Service (WS) is a technology, process, and software paradigm that provides support for business integrations mainly over an Internet-based environment. This book presents basic concepts of WS, protocol stack, and applications. In addition to studying the three supporting standards SOAP, WSDL, and UDDI, students will learn how to implement WS using Java-centric technologies such as JAXP, JAXRPC, SAAJ, and JAXB. Students will also study how business processes can be implemented using WS via BPEL.

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COTS GIS Integration and its Soap-Based Web Services

COTS GIS Integration and its Soap-Based Web Services

While web publishing and web services are welcome by various users, they must be supported by a sufficiently capable server that enforces business rules and handles hundreds of concurrent requests. For web map publishing, ESRI’s ArcIMS servers has illustrated its very good capacity. However, for business-to-business and tool-to-tool web services, we had to develop an unbiased solution. In my experiments, I have chosen the industry’s best practice – the Java 2 Platform Enterprise Edition (J2EE) server. This server abridges and coordinates between the COTS software and the database and the service delivery components. The theme of this coordinating server is to improve performance. Many traditional design principles for distributed software are applicable to the design of web services, but also are more crucial to apply to the GIS web services.
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Performance Analysis Of Cloud Based Web Services For Virtual Learning Environment Systems Integration

Performance Analysis Of Cloud Based Web Services For Virtual Learning Environment Systems Integration

A similar study was presented in [8]. The authors empirically compared two versions of an electronic book inventory system implemented using Active Server Pages (ASP) and Web services. The workload generator used in this study was S-client [9]. The results showed that the ASP implementation has higher throughput and lower response time than the Web services implementation. Analytical performance modeling techniques have been used to identify performance problems in Web applications in [10]. A simulation technique for analyzing performance of composite Web services was proposed in [11], in this paper the authors considered a scenario of an online book store and used the simulation tool JSIM to build the simulation model of this scenario, the service time, communication latency, and waiting time for each Web service in the scenario were measured by load testing. The results from the simulation model were found to be close to the results obtained from the actual service execution. In [12] the authors investigated web reliability and web performance on different types of Internet connections, authors compared several web service implementations with Java-RMI and CORBA in terms of performance. Li et al. [13] present a Cloud Prophet that can accurately predict the response time of an on-premise web application if migrated to a cloud virtual environment. Kai et al. [14] studied the impact on system performance when introducing Web Service interfaces to an originally tightly coupled application. They used two implementation variants of Sun’s Java Pet Store application, one based strictly on the J2EE platform and the other as Web Services. Performance is compared in terms of the achieved overall throughput, response times and latency. Machado and Ferraz [15] presented guideline for two mostly used java base web services frameworks. They give recommendation on the use of SOAP features to guarantee interoperability between the frameworks. Their paper provides details of the principal performance overheads of web services.
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A web service based architecture for authorization of unknown entities in a Grid environment.

A web service based architecture for authorization of unknown entities in a Grid environment.

Current trends, including grid computing, are increasing the degree of reliance on networks; in short networked elements must communicate with each other necessitating the use of software modules to achieve this intent. Hence, web services are web based, compositions of small, well defined modules [Curbera2001]. The evolution of distributed computing, like networks, is very dynamic and web services reflect this dynamism. Modularity affords easier maintenance, code reuse, abstraction from unnecessary implementation details, and domain-wide access [Fiadeirol995]. Once properly described (using descriptive languages described below) and maintained in a repository for discovery purposes (also described below), these publicly exposed modules can be accessed as Web Services using well known scripting languages, such as Hypertext Markup Language (HTML) and the extensible Markup Language (XML), and protocols, such as the Simple Object Access Protocol (SOAP) [Curbera2001]. All services are offered individually and completely abstracted from their underlying complexity and implementation details. These services can be used independently or composed to create more complex services [Koehler2003].
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A robustness testing approach for SOAP Web services

A robustness testing approach for SOAP Web services

Web services robustness is characterized based on a set of failure modes, complemented with a detailed tag-based categorization of the service responses that helps understand- ing the source of the observed failures. Robustness charac- terization includes an automated analysis of the responses obtained in order to distinguish valid replies from replies that reveal robustness problems in the service being tested. wsr- bench (the tool used in our experimental evaluation) is able to perform a preliminary verification of the tests results. How- ever, in some cases, automated identification is not enough to decide if a given response is due to a robustness problem or not (e.g., in many cases it is difficult to automatically decide whether a given response represents an expected or unex- pected behavior). We have recently studied the applicability of machine learning algorithms, typically used in text clas- sification tasks, in the classification Web services robustness [37]. We found out that it is possible to obtain good results with these algorithms, i.e., a tool based on these algorithms can be used to automate the process effectively. Although the algorithms revealed that they do not perform perfectly, they can still be used to reduce the amount of manual effort required, specially, when a large amount of tests is executed. However, manual validation can still be an option for small to medium-sized services. In fact, it is normally straightfor- ward for developers and testers to classify a given response as expected or not expected.
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Reusing the Legacy Code Based on the LC WS Method

Reusing the Legacy Code Based on the LC WS Method

Web Service is an open and distributive application routine model. The usage of Web Service can be independent from platforms. Clients can construct logical units of application routine that can be accessed via internet from the standardized Web Service agreement[2]. Certain organizations have already published some standards and agreements that are necessary to fulfill Web Service such as Soap, WSDL, UDDI, etc. Web Service aims at providing access of service and information on the internet and achieving cross-platform interoperability[3].
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Optimizing Web Service Messaging Performance Using a Context Store for Static Data

Optimizing Web Service Messaging Performance Using a Context Store for Static Data

Because of increasing demand of binary form of XML-Based communication methods, W3C Workshop [10] was held and produced the report on Binary Interchange of XML Information Item Sets (Infoset) [7]. The report includes conclusions of the workshop meeting on September 2003 as well as several dozens of position papers from various institutes [11] – [13]. The purpose of the workshop was to study methods to compress XML documents and transmit pre-parsed and schema specific object. It identified requirements of binary XML Infoset, for examples a) maintaining universal interoperability, b) producing a generalized solution that is not limited to a specific application domain, c) reducing process time including a data binding time, and d) negotiation about falling back to XML/SOAP text format if receiver can’t understand binary. Web Service performance has been more recently reviewed at the 15th Global Grids Forum workshop (GGF 15) [22]. We put current approaches of improving Grid/Web Service communication performance into different categories. First, most proposals that follows the W3C XML Binary Characterization have a goal of producing a self-contained alternative to an XML message, which is optimized for faster processing and has smaller packet size. Approaches in this category replace a redundant vocabulary with indexes. Sun's Fast Infoset project [14], XML Schema-based Compression (XSBC) [15], XML Infoset Encoding (XBIS) are several examples of the category. The second category is a non self-contained alternative, such as Sun's Fast Web Services [11] and the Indiana University Extreme! Lab’s recommendation [16]. Our HHFR also falls on to this category. The last category is a message compression approach. Compression reduces the size of a XML document, but increases
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A Stream based Implementation of Secured SOA Model using XML Encryption and XML Signature

A Stream based Implementation of Secured SOA Model using XML Encryption and XML Signature

Web Services, Service Oriented Architecture SOA, Simple Object Access Protocol SOAP, Web Services Description Language WSDL, Encryption, XML Signature... Quality of service.[r]

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SOAP Based Security Interaction of Web Service inHeterogeneous Platforms

SOAP Based Security Interaction of Web Service inHeterogeneous Platforms

In order to provide reliable authentication information for the Web server, SIMSA adds a third-party certifica- tion agency. Certification agency will compare the re- questor’s information such as usernames, passwords and permissions and other information with that stored in the certification database (DB in Figure 1). It can provide users with the information needed to verify to invoke Web services. This information is encapsulated in an en- crypted message, and this message will be sent to the Web server with the user’s SOAP message, waiting for the server’s validation. In order to formally describe the process of third-party certification agency, Table 1 de- fines the parameters and function description.
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An Automated WSDL Generation and Enhanced SOAP Message Processing System for Mobile Web Services

An Automated WSDL Generation and Enhanced SOAP Message Processing System for Mobile Web Services

Mobile Web services are critical solutions in the Internet service integration architecture. In this research we proposed a new Web Service architecture by implementing two significant systems. Firstly, the HTML/WSDL converter can support reusing current HTML based contents. This is essential for saving developing or maintenance costs and serving seamless Internet services both wired and wireless. Secondly, we proposed a new SOAP message processing system to diminish SOAP latency problems by eliminating the Tomcat Servelet container in the Web Services implementation. The SOAP request and response messages are directly processed by the SOAProc system. We can implement an alternative mobile Web Services system by using these two systems without violating standard Web Services protocols. Our system can process more service request about doubly efficient than that of typical Web service implantation with very small connection errors.
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ENHANCEMENT OF SOAP WEB SERVICES MODEL PERFORMANCE BASED ON OPTIMIZED XML FILES

ENHANCEMENT OF SOAP WEB SERVICES MODEL PERFORMANCE BASED ON OPTIMIZED XML FILES

8. Rohit Ranchal, B.B., Pelin Angin, Lotfi ben Othmane, EPICS-A Framework for Enforcing Security Policies in Composite Web Services. IEEE, 2018. 9. JunKi, et al., XPRESS: A Queriable Compression for XML Data. 2003. 10. Liefke, H. and D. Suciu, XMill: an Efficient Compressor for XML Data. ACM. 11. TSALGATIDOU, A. and T. PILIOURA, An Overview of Standards and

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Web Services.ppt

Web Services.ppt

– A Web service is a software application identified by a URI, whose interfaces and binding are capable of being defined, described and discovered by XML artifacts and supports direct interactions with other software applications using XML based messages via Internet- based protocols. (W3C definition)

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Web Services.pdf

Web Services.pdf

– A Web service is a software application identified by a URI, whose interfaces and binding are capable of being defined, described and discovered by XML artifacts and supports direct interactions with other software applications using XML based messages via Internet- based protocols. (W3C definition)

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Analyzing Quality of Service Parameters of
Abstract Web Services Using Software Agents for
Building Composite Web Services

Analyzing Quality of Service Parameters of Abstract Web Services Using Software Agents for Building Composite Web Services

Abstract - Composite web service is a combination of multiple abstract web services. To build a composite web service we have to combine multiple abstract web services together may be in sequence or in parallel. On the fly to select the best web service from the multiple abstract web services available for the same purpose is the challenging job and leads to the NP complete problem. So we are proposing an analyzing model of the abstract web services using software agents. Due to seamless integration of web services and mobile agents, agent based framework is a natural choice. We are proposing the analysis part of web services and users with the help of software agents. And decision taken by this analyzing agent will be used to select the best abstract web service which will be the part of composite web service. Analyzing agents use the QOS parameter and Characteristic of web services for selecting best web service.
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OReilly   Programming Web Services with Soap pdf

OReilly Programming Web Services with Soap pdf

Over the last few decades, we've seen companies go to war to establish their operating systems, component models, programming languages, browsers, and so on. One refreshing aspect of the web services world is that most of these battles become irrelevant. Consider the SOAP services and clients we've discussed in this book. When we deploy a SOAP service, we define the methods we want to expose across the network. In the past, we'd have defined those methods with CORBA IDL or something similar, generated language bindings for various programming languages and platforms, then hoped we could get enough of the marketplace to use our service. If your platform or your development tools weren't compatible with your infrastructure (maybe they didn't support the correct level of CORBA, for example), you would probably be out of luck.
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