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What is Exchange Protocols

The sockets used by the TCP/IP protocol are highly standardized and widely available. But programming with sockets is considered by programmers as too low-level. It is the need for low-level programming that prevents the productive writing of stable distributed applications. The Remote Procedure Call (RPC) protocol has a slightly higher level. But the RPC (Remote Procedure Call) protocol is quite complex, and besides, there are many varieties of it.

High-level protocols such as CORBA (Common Object Request Broker Architecture), RMI (Remote Method Invocation), and distributed component object model (DCOM) have gained popularity. ). These protocols are still complex and require a special environment on both the server side and the client to organize their work. They also have other drawbacks. For example, in the process of using these protocols, problems may occur when data packets pass through firewalls (network protection systems).

However, one protocol has become ubiquitous. This is the Hypertext Transfer Protocol (HTTP). It was because of the ubiquity of the HTTP protocol that Microsoft and other network software manufacturers had to develop a new protocol called SOAP (Simple Object Access Protocol). SOAP uses extensible Markup Language (XML) text to encode object method requests and related data.

A huge advantage of the SOAP protocol is its simplicity. Due to its simplicity, this protocol can be easily implemented on many devices. Soap (Simple Object Access Protocol) can run on the top layer of any standard protocol. But it is the ability of it to work on the top layer of such standard Internet protocols as the hypertext file transfer protocol HTTP (Hypertext Transfer Protocol) and the SMTP protocol (Simple Mail Transfer Protocol- simple mail transfer protocol, or simple e-mail protocol), allows data packets to pass through network protection systems (firewalls) without any problems associated with the possibility of connection.