How to send bitmaps?

[Leicester22]

Hi,
what are the posibilities to send bitmaps to a remote server in Symbian 6.0.
How can sockets be used to send images?
Can I use the Wap Stack?

[mayankkedia]

from the SDK doc:-

Client/Server Overview

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Purpose
Provides the Symbian OS client/server framework, by which a program can offer services to multiple other programs. Servers also handle resources on behalf of multiple clients.

All Symbian OS developers should have a general understanding of this API in order to understand the design of many Symbian OS system APIs. In specialised circumstances, developers may also create their own server programs.




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Architectural relationships
Many important Symbian OS system APIs use the client/server framework to provide services to client programs: for example, the Windows Server, File Server, Messaging, and ETel. In some cases, such APIs provide extensive client-side classes that hide the direct use of the client/server interface from the client program.




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Description
The API has four key concepts: server (CServer), session (CSharableSession, CSession and RSessionBase), sub-session (RSubSessionBase), and message (RMessage).


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General properties
A server program offers services to other processes through a client interface API that it defines. Clients and servers use a message passing protocol to communicate.

Client/server is usually chosen, rather than a conventional shared library, to provide services when one or more of the following is required: management of shared system resources; asynchronous services; protection offered by running in a separate process from clients.

A client/server implementation supplies a server program executable, and a .DLL containing the client-side interface.


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Server
The server is the central class of any server program. It is responsible for handling requests by clients to establish a connection to the server.

The base server interface is provided by CServer.


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Session
The session is the channel of communication between a client and a server.

The base client-side session interface is provided by RSessionBase. An implementation derives from this to define the functions that it wants to expose to clients.

The corresponding server-side session base classes are CSession, and CSharableSession, which allows a session to be shared between different client threads. An implementation defines in a derived class how client messages should be handled.


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Sub-session
The sub-session presents a efficient refinement of a session when a client wants multiple simultaneous uses of a server. For example, with the File Server, each opened file is handled through a separate sub-session.

The base client-side sub-session interface is provided by RSubSessionBase. An implementation derives from this to define the functions that it wants to expose to clients.

A server implements a corresponding sub-session class based on CObject from the Reference Counting Objects API.


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Message
The message is the data structure passed between client and server. It contains an code specifying the type of client request, and four 32-bit data parameters. Clients do not use messages directly as they are encapsulated in client-side session and sub-session interfaces. Server-side sessions and sub-sessions read client data from messages, and write data back to them to be returned to the client.

The message interface is provided by RMessage.


hope this helps...
ciao

[Leicester22]

Thanx, but, it doesnt....
Now I've read the whole forum about http but I am still unsure wether Symbian 6.1 has http protokoll or not.
Is it possible to alter the socket example to connect to a webserver on port 80 and then send a POST as a DesC8 to the server?

[Leicester22]