GIOP Message Formats in Software

Make USS Code 39 in Software GIOP Message Formats
134 GIOP Message Formats
Code 39 Extended Creation In Visual C#
Using Barcode creator for .NET framework Control to generate, create Code-39 image in .NET framework applications.
GIOP was first defined by CORBA 20, revised with CORBA 21, and revised again with CORBA 23 This resulted in three versions of GIOP: versions 10, 11, and 12 The main additions in the later versions are support for message fragmentation in GIOP 11 and support for bidirectional communication in GIOP 12 Message fragmentation allows for more efficient marshaling of data onto the wire It permits the sender to send data for a single request in several fragments without having to buffer and marshal in advance all the data for a request Bidirectional communication is important for communication through firewalls For example, the Callback pattern (see Section 203) requires a server to also act as a
Paint USS Code 39 In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create Code 39 Full ASCII image in ASP.NET applications.
IT-SC book: Advanced CORBA Programming with C++
USS Code 39 Creator In .NET
Using Barcode generator for Visual Studio .NET Control to generate, create Code 39 Extended image in .NET applications.
client GIOP 12 allows the server to initiate requests on the connection that was opened by the client This means that the server does not have to open a separate connection for a callback, only to find itself blocked by a firewall Later versions of GIOP are backward-compatible with earlier versions This permits older clients to communicate with newer servers because newer servers must support all previous protocol versions Similarly, newer clients can communicate with older servers because clients are not allowed to use a later version than the one supported by the server We do not cover GIOP in full detail in this book Instead, we cover only a subset to illustrate the general principles In addition, the discussion that follows covers GIOP versions 10 and 11 We briefly return to GIOP 12 in Section 139
Create Code 3 Of 9 In VB.NET
Using Barcode creator for Visual Studio .NET Control to generate, create Code 39 Full ASCII image in .NET framework applications.
Table 132 GIOP message types Message Type Request Reply CancelRequest LocateRequest LocateReply CloseConnection MessageError Fragment
Draw Code 128C In .NET
Using Barcode maker for .NET Control to generate, create Code 128 Code Set B image in .NET applications.
[a] [b]
Bar Code Maker In Java
Using Barcode creation for Java Control to generate, create bar code image in Java applications.
Originator Client Server Client Client Server Server[a] Client or Server Client or Server
Bar Code Decoder In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
Can be sent by client or server in GIOP 12 GIOP 11 and 12
Drawing Data Matrix In Java
Using Barcode creation for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
GIOP has eight message types, as shown in Table 132 Of these message types, Request and Reply are the workhorses because they implement the basic RPC mechanism We show these two message types in some detail and only briefly describe the remainder A Request message is always sent from client to server and is used to invoke an operation or to read or write an attribute Request messages carry all in and inout parameters that are required to invoke an operation A Reply message is always sent from server to client, and only in response to a previous request It contains the results of an operation invocation that is, any return value, inout parameters, and out parameters If an operation raises an exception, the Reply message contains the exception that was raised By definition, the client is the party that opens a connection, and the server is the party that accepts the connection To invoke an operation on an object, the client opens a connection and sends a Request message The client then waits for a Reply message from the server on that connection
ECC200 Creation In .NET
Using Barcode drawer for ASP.NET Control to generate, create Data Matrix ECC200 image in ASP.NET applications.
IT-SC book: Advanced CORBA Programming with C++
ANSI/AIM Code 128 Creation In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
If client and server must reverse roles for example, because the server must invoke a callback operation on an object in the client the server cannot send a request on the connection it accepted from the client Instead, the server must open a separate connection for which it acts as the client This means that GIOP is unidirectional as far as client and server roles are concerned[3]
EAN 13 Generation In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create European Article Number 13 image in ASP.NET applications.
[3] With GIOP 12, client and server can reverse roles while using a single connection This is particularly important for callback objects provided by applets because the Java sandbox prevents opening of a separate connection to an applet
USS Code 128 Encoder In Visual Basic .NET
Using Barcode maker for .NET framework Control to generate, create Code 128 Code Set B image in .NET applications.
To transmit a GIOP message over the wire, the sending side sends a message header, followed by a message body (the contents of the message body depend on the exact message indicated by the header) Figure 133 shows the basic structure of a GIOP messageThe message header is described in pseudo-IDL:
GS1 - 12 Generation In Java
Using Barcode creator for Java Control to generate, create UCC - 12 image in Java applications.
EAN-13 Supplement 5 Printer In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create EAN13 image in .NET applications.
Draw Data Matrix ECC200 In Visual C#.NET
Using Barcode creation for .NET framework Control to generate, create DataMatrix image in Visual Studio .NET applications.
UCC-128 Creation In VS .NET
Using Barcode printer for ASP.NET Control to generate, create EAN128 image in ASP.NET applications.
Bar Code Generator In C#
Using Barcode encoder for Visual Studio .NET Control to generate, create barcode image in .NET applications.