Chapter 32. The System.Web.Services.ProtocolsNamespace
The System.Web.Services.Protocols
namespace contains types that support communication between a client and a web service. They 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. Figure 32-1 and
Figure 32-2
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