To clearly describe the differences between Web Service and remoting, I plan to start with their architecture:
Web services are divided into five levels:
1. Http Transmission Channel
2. XML data format
3. Soap Encapsulation Format
4. Description of WSDL
5. UDDI
In general, the Web service structure under. NET is relatively simple and easy to understand and apply:
Generally, WebService applications in the. NET structure are based on the. NET Framework and IIS architecture, so it is relatively easy to deploy (dispose.
From the implementation perspective,
First, WebService must inherit the class of the method exposed to the client from the base class: system. Web. Services. WebService.
Second, the exposed methods must be preceded by [webmethod] or [webmethodattribute].
Running Mechanism of WebService
First, the client uses the WSDL from the server to the WebService, and claims a proxy class on the client)
This proxy class is responsible for request and response with the WebService Server
When
When a data (in XML format) is encapsulated into a data stream in soap format and sent to the server, a process object is generated and the soap packet that receives the request is parsed.
Analysis, and then process the transaction. After the processing is completed, the computation result is packaged with soap, and then the package is sent as a response to the proxy class (proxy) of the client.
Class). Similarly, this proxy class parses the soap package and then performs subsequent operations.
This is a running process of WebService.
The following is a summary of. Net remoting:
. Net
Remoting
It is a technology developed on the basis of DCOM and so on. Its main purpose is to achieve cross-platform, cross-language, and enterprise firewall penetration. This is also its basic feature, which is different from WebService.
Yes, it supports HTTP and TCP channels, and it can not only transmit soap packets in XML format, but also transmit binary streams in the traditional sense, which makes it more efficient and flexible. And it
Without relying on IIS, users can develop and deploy their own host servers (dispose). Therefore, in these aspects, WebService
In fact, it is a special case of. Net remoting.
Again, we will make a comparison between WebService and remoting.
WebService features platform-independent, cross-language (any language that supports XML), and enterprise firewall penetration.
However, its disadvantage is that a Web server needs to be deployed, and the speed is relatively slow;
. Net remoting features
The advantage is that users can use both TCP-based binary stream communication and HTTP-based soap-based communication.
The efficiency is much higher than that of WebService, but its disadvantages are also obvious.. Net remoting can only be applied under the. NET Framework of Ms.
In terms of performance, the efficiency of remoting is very similar to that of traditional DCOM and COM +!