Concept and working principle of WebService (I). Working Principle of webservice
Today, let's learn about WebService. What is it?
Web service is a platform-independent, low-coupling, self-contained, programmable web-based application that can use
We have already explained the basic business of Modbus and designed the operation flow of the master-slave station that we are going to implement. This is directly related to Modbus is the creation of Modbus message frames. Modbus message frame is
1.http recognition
The HTTP protocol is an abbreviation for the Hyper Text Transfer Protocol (Hypertext Transfer Protocol) and is the most widely used network protocol on the Internet for the transfer of hypertext data between Web servers
Catalogue
IP protocol Header formatAddress Resolution Protocol ARPReverse Address Resolution Protocol RARPInter-network Control Message Protocol ICMPInternet Group Management Protocol IGMP IP datagram header
IP Datagram Header format: The highest
TCP/IPA protocol is a complex set of protocols. There are many professional books. Here, I will only introduce the layer structure of TCP/IP protocol and its message format that are closely related to programming. We know that TCP/IP uses a layered
Reference: http://blog.csdn.net/zyz511919766/article/details/25136485Logging moduleThe log has 5 levels, debug,info,warning,error,critical, respectively, and the corresponding level numbers are 10,20,30,40,50Output log standards to the
1. HTTP request message Format First, look at the message format of the HTTP request message, as shown in: the first line is the request line, the request line has 3 fields, the Method field, the URL field, and the HTTP version field. Method
Micro-service Combat (III): Inter-process communication in the micro-service Architecture "Editor's note" This is the third article that uses a microservices architecture to create its own application series. The first article introduces the
recently participated in the CSDN blog star, I hope you give a vote, thank you ~ Point hereCast me a vote.PrefaceIn the development, we often need to implement file upload, more common is the image upload, such as modify the size of something like.
The concept of soap should not be a novelty. To put it simply, soap is a standard that combines data in XML, then through the HTTP protocol (or other protocol, but usually always with the HTTP protocol) and the remote service, or it can be
For the Web HTTP programming model, the service contract as an operational method does not need to apply the OperationContractAttribute feature, only need to apply WebGetAttribute and WebInvokeAttribute features as needed. The former is for get HTTP
Using ADO in VC to perform database operations
ADO is a programming interface at the application layer. It accesses data through the COM interface provided by ole db. It is suitable for various client/server application systems and web-based
Reprint http://dockone.io/article/549"Editor's note" This is the third article that uses a microservices architecture to create its own application series. The first article introduces the microservices architecture pattern, compares it to the
Previously, the data transmitted in the network is not clear, by consulting the relevant data, summed up the TCP and UDP and IP message format:
TCP Message Format:
(Reproduced from http://wenku.baidu.com/view/04b0d780e53a580216fcfeaa.html in the
MB OverviewMB the full name is message broker, which is the messaging agent. The word "message" a few years ago compared to fire, message middleware also sold very hot, at that time it seems that the product of the Java EE to "news", "middleware"
[2] chrome inter-process communication 1. the basic mode of chrome Process Communication is Interprocess Communication, which is called IPC (inter-process communication). In a few articles on chrome, there is an article about this. Chrome has three
(Next: Architecture Design: Inter-system Communication (34)-The deified ESB (UP))2-4. ESB and version controlThe process of system integration in enterprises, there are many non-technical factors caused by the change. It is possible that a call
The WSDL (Web services Description language,web Service Description Language) is an XML application that defines a Web service description as a set of service access points, These service access points allow clients to access services that contain
Security is undoubtedly very important in Distributed communication systems. What security measures does esframework provide? Because esframework is a development framework at the application layer, this article only discusses the security issues
What does the Apple message tell you?As shownIt is the service technology of the app that notifies the user of the app when the user does not open the app process.Related conceptsProvider: A third-party service system that provides pushDevice: Apple
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