SIP_OptionTags Class

Declaration Syntax

C#

Visual Basic

Visual C++

F#

public class SIP_OptionTags

Public Class SIP_OptionTags

public ref class SIP_OptionTags

type SIP_OptionTags =  class end

Members

Icon	Member	Description
	SIP_OptionTags()()()()	Initializes a new instance of the SIP_OptionTags class
	early_session	A UA adding the early-session option tag to a message indicates that it understands the early-session content disposition. Defined in rfc 3959.
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	eventlist	Extension to allow subscriptions to lists of resources. Defined in rfc 4662.
	Finalize()()()()	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode()()()()	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType()()()()	Gets the Type of the current instance. (Inherited from Object.)
	histinfo	When used with the Supported header, this option tag indicates support for the History Information to be captured for requests and returned in subsequent responses. This tag is not used in a Proxy-Require or Require header field since support of History-Info is optional. Defined in rfc 4244.
	join	Support for the SIP Join Header. Defined in rfc 3911.
	MemberwiseClone()()()()	Creates a shallow copy of the current Object. (Inherited from Object.)
	norefersub	This option tag specifies a User Agent ability of accepting a REFER request without establishing an implicit subscription (compared to the default case defined in RFC3515). Defined in rfc 3911.
	path	A SIP UA that supports the Path extension header field includes this option tag as a header field value in a Supported header field in all requests generated by that UA. Intermediate proxies may use the presence of this option tag in a REGISTER request to determine whether to offer Path service for for that request. If an intermediate proxy requires that the registrar support Path for a request, then it includes this option tag as a header field value in a Requires header field in that request. Defined in rfc 3327.
	precondition	An offerer MUST include this tag in the Require header field if the offer contains one or more "mandatory" strength-tags. If all the strength-tags in the description are "optional" or "none" the offerer MUST include this tag either in a Supported header field or in a Require header field. Defined in rfc 3312.
	pref	This option tag is used to ensure that a server understands the callee capabilities parameters used in the request. Defined in rfc 3840.
	privacy	This option tag indicates support for the Privacy mechanism. When used in the Proxy-Require header, it indicates that proxy servers do not forward the request unless they can provide the requested privacy service. This tag is not used in the Require or Supported headers. Proxies remove this option tag before forwarding the request if the desired privacy function has been performed. Defined in rfc 3323.
	replaces	This option tag indicates support for the SIP Replaces header. Defined in rfc 3891.
	resource_priority	Indicates or requests support for the resource priority mechanism. Defined in rfc 4412.
	sdp_anat	The option-tag sdp-anat is defined for use in the Require and Supported SIP [RFC3261] header fields. SIP user agents that place this option-tag in a Supported header field understand the ANAT semantics as defined in [RFC4091]. Defined in rfc 4092.
	sec_agree	This option tag indicates support for the Security Agreement mechanism. When used in the Require, or Proxy-Require headers, it indicates that proxy servers are required to use the Security Agreement mechanism. When used in the Supported header, it indicates that the User Agent Client supports the Security Agreement mechanism. When used in the Require header in the 494 (Security Agreement Required) or 421 (Extension Required) responses, it indicates that the User Agent Client must use the Security Agreement Mechanism. Defined in rfc 3329.
	tdialog	This option tag is used to identify the target dialog header field extension. When used in a Require header field, it implies that the recipient needs to support the Target-Dialog header field. When used in a Supported header field, it implies that the sender of the message supports it. Defined in rfc 4538.
	timer	This option tag is for support of the session timer extension. Inclusion in a Supported header field in a request or response indicates that the UA is capable of performing refreshes according to that specification. Inclusion in a Require header in a request means that the UAS must understand the session timer extension to process the request. Inclusion in a Require header field in a response indicates that the UAC must look for the Session-Expires header field in the response, and process accordingly. Defined in rfc 4028.
	ToString()()()()	Returns a string that represents the current object. (Inherited from Object.)
	x100rel	This option tag is for reliability of provisional responses. When present in a Supported header, it indicates that the UA can send or receive reliable provisional responses. When present in a Require header in a request it indicates that the UAS MUST send all provisional responses reliably. When present in a Require header in a reliable provisional response, it indicates that the response is to be sent reliably. Defined in rfc 3262.

Remarks

Option tags are used in header fields such as Require, Supported, Proxy-Require, and Unsupported in support of SIP compatibility mechanisms for extensions (Section 19.2). The option tag itself is a string that is associated with a particular SIP option (that is, an extension).

Inheritance Hierarchy

Object
	SIP_OptionTags

All Members	Constructors	Methods	Fields
Public Protected		Instance Static		Declared Inherited