Bluetooth connections - btsppEcho

Description

This example MIDlet shows you how to create a simple client-server pair using the Bluetooth RFCOMM protocol. In this example:

• The user of the server can send a message to all clients connected to the server.

• The user of the client can send a message to all clients connected to the server by simply sending a message to the server.

  The server receives messages from any connected client, and "echoes" the received message back to all clients (including the original sender).

Figure: btsppEcho MIDlet running on a Series 40 full touch device

For a tutorial that shows you how to create this MIDlet, see section Example: Creating a client-server pair using RFCOMM.

Compatibility

This MIDlet is compatible with Series 40 2nd Edition devices and newer.

This MIDlet has been tested on the following devices:

• Nokia 6700 Classic (Series 40 6th Edition)

• Nokia Asha 203 on Nokia Asha software platform (Java Runtime 1.0.0 for Series 40)

• Nokia Asha 305 on Nokia Asha software platform (Java Runtime 2.0.0 for Series 40)

MIDlet project

The MIDlet project files are packaged as a zip file. To download the zip file, click the following link:

Download btsppEcho

MIDlet classes

The MIDlet consists of the following packages and classes (click to view the full source code):

• com.nokia.example.btsppecho

  • ClientForm

  • ErrorScreen

  • LogScreen

  • MIDletApplication

  • ServerForm

  • ServiceDiscoveryList

  • SettingsList

  • TextScreen

• com.nokia.example.btsppecho.client

  • ClientConnectionHandler

  • ClientConnectionHandlerListener

  • ConnectionService

• com.nokia.example.btsppecho.server

  • ServerConnectionHandler

  • ServerConnectionHandlerListener