Class CallProperties

Class that provides various static utility functions relating to call properties

Inheritance
object
CallProperties
Inherited Members
Namespace: SipLib.Core
Assembly: SipLib.dll
Syntax
public class CallProperties

Methods

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CreateBranchId()

Creates a simplified branch ID parameter using the magic cookie and a GUID

Declaration
public static string CreateBranchId()
Returns
Type Description
string
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CreateBranchId(string, string, string, string, string, string, int, string, string, string)

From RFC 3261, Section 16.6, Step 8. The value placed in this part of the branch parameter SHOULD reflect all of those fields (including any Route, Proxy-Require and Proxy- Authorization header fields). This is to ensure that if the request is routed back to the proxy and one of those fields changes, it is treated as a spiral and not a loop (see Section 16.3). A common way to create this value is to compute a cryptographic hash of the To tag, From tag, Call-ID header field, the Request-URI of the request received (before translation), the topmost Via header, and the sequence number from the CSeq header field, in addition to any Proxy-Require algorithm used to compute the hash is implementation-dependent, but MD5 (RFC 1321 [35]), expressed in hexadecimal, is a reasonable choice. (Base64 is not permissible for a token.)

Declaration
public static string CreateBranchId(string magicCookie, string toTag, string fromTag, string callId, string uri, string topVia, int cSeq, string route, string proxyRequire, string proxyAuth)
Parameters
Type Name Description
string magicCookie
string toTag
string fromTag
string callId
string uri
string topVia
int cSeq
string route
string proxyRequire
string proxyAuth
Returns
Type Description
string
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CreateNewCallId()

Creates a unique call ID

Declaration
public static string CreateNewCallId()
Returns
Type Description
string
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CreateNewTag()

Creates a new tag value for a To-Tag or a From-Tag

Declaration
public static string CreateNewTag()
Returns
Type Description
string