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PublisherChapter 34. The System.Web.Services.Protocols Namespace
The System.Web.Services.Protocols
namespace contains types that support communication between a client
and a web service. The types define protocols that encode and
transmit data across an Internet connection, including HTTP GET, HTTP
POST, and SOAP.The primary use of these types is to support the proxy class that
manages the communication between web service and client. You can
create this proxy class automatically by using the Visual Studio .NET
IDE or the WSDL.exe command-line utility, or you
can code it by hand. This class will inherit from
HttpGetClientProtocol,
HttpPostClientProtocol, or
SoapHttpClientProtocol (which is the most common
choice and the default for automatically generated proxy classes).
Other important types in this namespace include the attributes that
you use to set the encoding for SOAP request and response messages,
such as SoapDocumentMethodAttribute.This class also provides types you can use to create SOAP extensions.
Typically, SOAP extensions are used to directly access the SOAP
messages exchanged between web services and clients before they are
sent or deserialized into objects. The
SoapExtension class and
SoapExtensionAttribute are the basic building
blocks for SOAP extensions. You can also use
SoapHeader and
SoapHeaderAttribute classes to create custom SOAP
headers for your message. You can then create web service methods
that require specific custom SOAP headers. Figures Figure 34-1 and Figure 34-2 show the
types in this namespace.
Figure 34-1. Some types from the System.Web.Services.Protocols namespace
Figure 34-2. More types from the System.Web.Services.Protocols namespace
