in VS .NET

Encoder Data Matrix 2d barcode in VS .NET

5
Generating Data Matrix 2d Barcode In .NET
Using Barcode creation for VS .NET Control to generate, create Data Matrix ECC200 image in .NET applications.
Scan DataMatrix In .NET Framework
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
parameter is globally unique if it begins with the magic cookie The chances of a system that complies only with RFC 2543 selecting a branch parameter that begins with the magic cookie are miniscule The branch parameter is unique for every request issued by a client, with the exception of CANCEL and ACK for non-2XX responses The branch parameter for a CANCEL or ACK for a non-2XX response should be the same as the branch parameters for the original request (the request being cancelled, or the request for which the non-2XX response was received) Proxy State A proxy can be either stateless or stateful If stateless, then the proxy takes an incoming request, performs whatever translation is necessary, forwards the corresponding outgoing request, and forgets that anything ever happened If a message is retransmitted through a stateless proxy, then it must be forwarded in exactly the same manner as the original request This action requires that the choice of Via: header (specifically the tag value) be computed based on header values in a request that do not change on retransmission If a proxy is stateful, then the proxy remembers incoming requests and corresponding outgoing requests, and it is able to act more intelligently on subsequent requests and responses related to the same session Two important headers in Figure 5-12 are the Record-Route: and the Route: headers In the example, all messages and responses pass through the same proxy This need not necessarily be the case, however Although the response to a given request must return along the same route as used by the request, two consecutive requests need not follow the same path Given that an initial INVITE will contain a Contact: header and responses can also contain a Contact: header, the two ends of the call might have the addressing information necessary to communicate directly Therefore, after the initial INVITE request and response, subsequent requests and responses might be sent end to end A proxy might require that it remain in the signaling path for all subsequent requests, however For example, a proxy might need to remain in the signaling path in order to provide some advanced service A proxy can ensure that it remains in the signaling path through the use of the Record-Route: header Each proxy that wants to remain in the signaling path for future requests inserts its address in the Record-Route: header field of the INVITE, such that the Record-Route: header field ultimately contains a list of proxy addresses, each of the form serverdomain Each proxy places its address at the head of the list such that, at the end of the signaling path, the first entry in the list is that of the last proxy used
Barcode Generator In Visual Studio .NET
Using Barcode creator for Visual Studio .NET Control to generate, create barcode image in .NET applications.
Bar Code Scanner In VS .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Data Matrix Generator In C#
Using Barcode printer for .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
Data Matrix ECC200 Printer In .NET
Using Barcode encoder for ASP.NET Control to generate, create Data Matrix image in ASP.NET applications.
The Session Initiation Protocol (SIP)
Printing Data Matrix 2d Barcode In VB.NET
Using Barcode creator for .NET Control to generate, create DataMatrix image in Visual Studio .NET applications.
1D Generation In .NET
Using Barcode generator for .NET Control to generate, create 1D Barcode image in .NET applications.
The Session Initiation Protocol (SIP)
Painting GS1 128 In .NET Framework
Using Barcode generation for .NET Control to generate, create EAN128 image in VS .NET applications.
Barcode Drawer In Visual Studio .NET
Using Barcode drawer for VS .NET Control to generate, create bar code image in VS .NET applications.
A 200 response to the INVITE will include the Record-Route: header as it was received by the ultimate destination of the INVITE Hence, this response contains an ordered list of all the proxies used in the INVITE The content of the header is propagated back through the network along with the 200 response When the 200 response is received at the client that originated the INVITE, the information contained in the Record-Route: header is used in subsequent requests (such as ACK or BYE) related to the same call The client takes the information in the Record-Route: header and places it in a Route: header in reverse order so that the Route: header contains a list of proxies in the direction from calling client to called server The client uses the first entry in the Route: header as the destination to send the next request (such as ACK or BYE) The proxy that receives that request removes the first entry in the Route: header field (which will indicate the proxy itself) and forwards the message to the next proxy in the chain, or to the user-agent server if the proxy in question is the last proxy in the chain The result is that each request follows the same path as the original INVITE, thereby allowing each proxy in the chain to be aware of each request and response As can be seen from Figure 5-12, the Record-Route: and Route: header fields contain the loose routing (lr) parameter Systems compliant with the latest SIP specification should insert this parameter in the Record-Route: header The initial SIP specification did not require the presence of the lr parameter, and its absence indicates strict routing The difference between the loose and strict routing is in how the Route: header is populated and in the value that is placed in the Request-URI In Figure 5-12, lr is depicted A client or proxy that supports loose routing uses the content of the Route: header field as the address to which a message is forwarded, but uses the ultimate destination (as specified in a Contact: header) as the Request-URI In Figure 5-12, we can see that Boss sends an ACK message to the proxy, but uses Collins@station1workcom as the Request-URI (not the SIP address of the proxy) Moreover, the ACK from Boss contains the Route: header value of sip:serverworkcom If strict routing were used, then the ACK from Boss would have a Request-URI of sip:serverworkcom, and the Route: header would not include the proxy server s SIP address; rather, it would contain Daniel s Contact: header information (sip:Collins@station1workcom) Forking Proxy A proxy can fork requests This would happen if a particular user is registered at several locations An incoming INVITE for the user would be sent from the proxy to each of the registered locations If one
GS1 DataBar Limited Generator In .NET Framework
Using Barcode printer for VS .NET Control to generate, create GS1 DataBar Stacked image in VS .NET applications.
EAN-8 Supplement 2 Add-On Maker In VS .NET
Using Barcode creation for VS .NET Control to generate, create European Article Number 8 image in VS .NET applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
European Article Number 13 Drawer In Java
Using Barcode printer for BIRT Control to generate, create EAN-13 image in Eclipse BIRT applications.
Drawing Bar Code In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.
The Session Initiation Protocol (SIP)
Recognize Code 3/9 In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
Painting Universal Product Code Version A In Java
Using Barcode maker for Eclipse BIRT Control to generate, create GTIN - 12 image in Eclipse BIRT applications.
European Article Number 13 Drawer In Objective-C
Using Barcode generator for iPad Control to generate, create GTIN - 13 image in iPad applications.
ANSI/AIM Code 128 Printer In None
Using Barcode creator for Online Control to generate, create Code 128A image in Online applications.
Code39 Printer In None
Using Barcode creation for Font Control to generate, create Code 3 of 9 image in Font applications.
USS Code 39 Creation In VS .NET
Using Barcode drawer for Reporting Service Control to generate, create Code 39 Extended image in Reporting Service applications.
Copyright © OnBarcode.com . All rights reserved.