1. WSDL
1.1, types: Used to define the type of access
1.2, Message:soap (simple Object Access Protocol
1.3. PortType: Indicates the interface of the server and binds the corresponding in and out messages through Operation: Where in represents the parameter, out represents the return value
1.4. Binding: Specifies the format used to deliver the message
1.5. Service: Specify the name published by the services
2. SOAP
2.1. Soap (Simple Object access Protocol) is a simple protocol for exchanging information in a decentralized or distributed environment and is an XML-based protocol that includes four parts: SOAP encapsulation (envelop), encapsulation definition A framework that describes what the content in the message is, who sent it, who should accept and handle it, and how to deal with it; the SOAP encoding rule (encoding rules), which represents an instance of the data type that the application needs to use; SOAP RPC Representation (RPC representation), which represents the contract for remote procedure calls and replies; A SOAP binding (binding) that uses the underlying protocol to exchange information.
2.1. The two main design goals of soap are simplicity and scalability. This means that some of the properties in traditional messaging systems or distributed object systems will not be part of the SOAP specification. For example: Distributed garbage collection (distributed garbage collection), Mass transfer messages (boxcarring or batching of messages), object references ( Objects-by-reference (which requires distributed garbage collection), Object Activation (Activation (which requires objects-by-reference)).
3, the use of Tcpmon
3.1, Tcpmon is equivalent to a transit station, it can be set to receive the port, the destination port. You can intercept HTTP requests and HTTP messages between the client and server side, and view them.
3.2.
3.3.
3.4, Tcpmon monitoring 7777 port, the client request will go to Tcpmon first, and then through Tcpmon to access the 8888 port request.
WSDL and SOAP (simple use of the Tcpmon tool) 03