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4D v14.3

WEB SERVICE AUTHENTICATE


WEB SERVICE AUTHENTICATE ( name ; password {; authMethod} {; *} )

Parameter	Type	Description
name	String	User name
password	String	User password
authMethod	Longint	Authentication method 0 or omitted = not specified, 1 = BASIC, 2 = DIGEST
*	Operator	If passed: authentication by proxy

Description

The WEB SERVICE AUTHENTICATE command enables the use of Web Services requiring authentication of the client application (simple authentication). The BASIC and DIGEST methods are supported, as well as the presence of a proxy.

Note: For more information about the BASIC and DIGEST authentication methods, refer to the Connection Security section.

In the name and password parameters, pass the required identification information (user name and password). This information will be encoded and added to the HTTP request sent to the Web Service using the WEB SERVICE CALL command. It is thus necessary to call the WEB SERVICE AUTHENTICATE command before calling the WEB SERVICE CALL command.

The optional authMethod parameter indicate the authentication method to be used for the next call to the WEB SERVICE CALL command. You can pass one of the following values:

2 = use the DIGEST authentication method
1 = use the BASIC authentication method
0 (or parameter omitted) = use the appropriate method. In this case, 4D sends an additional request in order to negotiate the authentication method.

If you pass the * parameter, you indicate that the authentication information is to be sent to an HTTP proxy. This configuration must be implemented when there is a proxy that requires authentication between the Web Service client and the Web Service itself. If the Web Service is itself authenticated, a double authentication is required (see the example).

By default, the authentication information is reset to zero after each request. Therefore, you must use the WEB SERVICE AUTHENTICATE command before each WEB SERVICE CALL command. It is nevertheless possible to keep this information temporarily using an option of the WEB SERVICE SET OPTION command. In this case, it is not necessary to execute the WEB SERVICE AUTHENTICATE command before each WEB SERVICE CALL command.

If authentication fails, the SOAP server returns an error that you can identify using the WEB SERVICE Get info command.

Example

Authentication with a Web Service located behind a proxy:

  // Authentication to Web Service in DIGEST mode

 WEB SERVICE AUTHENTICATE("SoapUser";"123";2)

  // Authentication to proxy in default mode

 WEB SERVICE AUTHENTICATE("ProxyUser";"456";*)

 WEB SERVICE CALL(...)