×
Namespaces

Variants
Actions
(Difference between revisions)

Using an already active connection on Symbian

From Nokia Developer Wiki
Jump to: navigation, search
lpvalente (Talk | contribs)
m (Lpvalente -)
hamishwillee (Talk | contribs)
m (Hamishwillee - Unarchive -think this is still valid)
Line 1: Line 1:
[[Category:Symbian C++]][[Category:Networking]][[Category:Code Snippet]][[Category:Code Snippet]][[Category:S60 3rd Edition (initial release)]][[Category:S60 3rd Edition FP1]]
+
[[Category:Symbian C++]][[Category:Networking]][[Category:Code Snippet]][[Category:Code Snippet]][[Category:S60 3rd Edition (initial release)]][[Category:S60 3rd Edition FP1]][[Category:S60 3rd Edition FP2]]
{{Archived|timestamp=20120804182640|user=[[User:Lpvalente|Lpvalente]]}}
+
 
+
 
+
 
{{ArticleMetaData <!-- v1.2 -->
 
{{ArticleMetaData <!-- v1.2 -->
 
|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) -->
 
|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) -->

Revision as of 04:36, 8 August 2012

Article Metadata
Tested with
Devices(s): Nokia E90 Communicator, Nokia N95
Compatibility
Platform(s): S60 3rd Edition
S60 3rd Edition, FP1
S60 3rd Edition FP2
S60 3rd Edition FP1
S60 3rd Edition (initial release)
Platform Security
Signing Required: Self Signed
Capabilities: NetworkServices
Article
Keywords: RHTTPSession, RSocketServ, RConnection, TCommDbConnPref, TConnectionInfoBuf
Created: tepaa (15 Feb 2008)
Last edited: hamishwillee (08 Aug 2012)

Contents

Overview

You can use an already active RConnection to establish a connection to the Internet. This saves resources and memory.

RConnection has enumeration of the active connections. The source code finds active connections and attaches to the selected connection via the IAP. If there is no selected active connection, a new one is created. Errors are not handled in the source code.

MMP file

LIBRARY http.lib
LIBRARY ecom.lib
LIBRARY esock.lib
LIBRARY commdb.lib
CAPABILITY NetworkServices

Header file

#include <http.h>
#include <es_sock.h>
#include <commdbconnpref.h>


Source file

// Selected IAP
TInt selectedIap=6;
 
// Open socket server and connection
RHTTPSession session; // TODO: Set to your class member variable
RSocketServ socketServ; // TODO: Set to your class member variable
RConnection connection; // TODO: Set to your class member variable
TCommDbConnPref connPref; // TODO: Set to your class member variable
socketServ.Connect();
connection.Open(iSocketServ);
 
// Search through existing connections.
// If there is already a connection that matches the given IAP, try to attach to
// existing connection.
TBool connected(EFalse);
TConnectionInfoBuf connInfo;
TUint count;
if ( connection.EnumerateConnections(count) == KErrNone )
{
for (TUint i=1; i<=count; i++)
{
// Note: GetConnectionInfo expects 1-based index
if ( connection.GetConnectionInfo( i, connInfo ) == KErrNone )
{
if ( connInfo().iIapId == selectedIap )
{
if ( connection.Attach(connInfo, RConnection::EAttachTypeNormal)
== KErrNone )
{
connected = ETrue;
break;
}
}
}
}
}
 
// Is there an active connection?
if ( !connected )
{
// Could not attach to the existing connection.
// => Start a new connection.
connPref.SetDialogPreference(ECommDbDialogPrefDoNotPrompt);
connPref.SetIapId(selectedIap);
connection.Start(connPref);
}
 
// Open session
session.OpenL();
 
// Set the session's connection info...
RStringPool strPool = session.StringPool();
RHTTPConnectionInfo connInfo = session.ConnectionInfo();
 
// ...to use the socket server
connInfo.SetPropertyL ( strPool.StringF(HTTP::EHttpSocketServ,
RHTTPSession::GetTable() ), THTTPHdrVal (socketServ.Handle()) );
 
// ...to use the connection
connInfo.SetPropertyL ( strPool.StringF(HTTP::EHttpSocketConnection,
RHTTPSession::GetTable() ),
THTTPHdrVal (REINTERPRET_CAST(TInt, &(connection))) );
 
 
 
 
// TODO: Remember to close handles in your class destructor, such as:
CYourClass::~CYourClass()
{
session.Close(); // Close handles in this order
connection.Close();
socketServ.Close();
}

See also

How can I determine active connections using Symbian C++?

134 page views in the last 30 days.
×