QBluetoothServer

The QBluetoothServer class uses the RFCOMM or L2cap protocol to communicate with a Bluetooth device. More…

Synopsis

Functions

• def close ()

• def error ()

• def hasPendingConnections ()

• def isListening ()

• def listen ([address=QBluetoothAddress()[, port=0]])

• def listen (uuid[, serviceName=””])

• def maxPendingConnections ()

• def nextPendingConnection ()

• def securityFlags ()

• def serverAddress ()

• def serverPort ()

• def serverType ()

• def setMaxPendingConnections (numConnections)

• def setSecurityFlags (security)

Signals

• def errorOccurred (error)

• def newConnection ()

Detailed Description

QBluetoothServer is used to implement Bluetooth services over RFCOMM or L2cap.

Start listening for incoming connections with listen() . Wait till the newConnection() signal is emitted when a new connection is established, and call nextPendingConnection() to get a QBluetoothSocket for the new connection.

To enable other devices to find your service, create a QBluetoothServiceInfo with the applicable attributes for your service and register it using registerService() . Call serverPort() to get the channel number that is being used.

If the Protocol is not supported by a platform, listen() will return false. Android and WinRT only support RFCOMM for example.

On iOS, this class cannot be used because the platform does not expose an API which may permit access to QBluetoothServer related features.

See also

QBluetoothServiceInfo QBluetoothSocket

class PySide6.QtBluetooth.QBluetoothServer(serverType[, parent=None])

Parameters

• serverType – Protocol

• parent – PySide6.QtCore.QObject

Constructs a bluetooth server with parent and serverType.

PySide6.QtBluetooth.QBluetoothServer.Error

This enum describes Bluetooth server error types.

Constant	Description
QBluetoothServer.NoError	No error.
QBluetoothServer.UnknownError	An unknown error occurred.
QBluetoothServer.PoweredOffError	The Bluetooth adapter is powered off.
QBluetoothServer.InputOutputError	An input output error occurred.
QBluetoothServer.ServiceAlreadyRegisteredError	The service or port was already registered
QBluetoothServer.UnsupportedProtocolError	The Protocol is not supported on this platform.

PySide6.QtBluetooth.QBluetoothServer.close()

Closes and resets the listening socket. Any already established QBluetoothSocket continues to operate and must be separately closed .

PySide6.QtBluetooth.QBluetoothServer.error()

Return type

Error

Returns the last error of the QBluetoothServer .

PySide6.QtBluetooth.QBluetoothServer.errorOccurred(error)

Parameters

error – Error

PySide6.QtBluetooth.QBluetoothServer.hasPendingConnections()

Return type

bool

Returns true if a connection is pending, otherwise false.

PySide6.QtBluetooth.QBluetoothServer.isListening()

Return type

bool

Returns true if the server is listening for incoming connections, otherwise false.

PySide6.QtBluetooth.QBluetoothServer.listen([address=QBluetoothAddress()[, port=0]])

Parameters

• address – PySide6.QtBluetooth.QBluetoothAddress

• port – quint16

Return type

bool

Start listening for incoming connections to address on port. address must be a local Bluetooth adapter address and port must be larger than zero and not be taken already by another Bluetooth server object. It is recommended to avoid setting a port number to enable the system to automatically choose a port.

Returns true if the operation succeeded and the server is listening for incoming connections, otherwise returns false.

If the server object is already listening for incoming connections this function always returns false. close() should be called before calling this function.

See also

isListening() newConnection()

PySide6.QtBluetooth.QBluetoothServer.listen(uuid[, serviceName=""])

Parameters

• uuid – PySide6.QtBluetooth.QBluetoothUuid

• serviceName – str

Return type

PySide6.QtBluetooth.QBluetoothServiceInfo

Convenience function for registering an SPP service with uuid and serviceName. Because this function already registers the service, the QBluetoothServiceInfo object which is returned can not be changed any more. To shutdown the server later on it is required to call unregisterService() and close() on this server object.

Returns a registered QBluetoothServiceInfo instance if successful otherwise an invalid QBluetoothServiceInfo . This function always assumes that the default Bluetooth adapter should be used.

If the server object is already listening for incoming connections this function returns an invalid QBluetoothServiceInfo .

For an RFCOMM server this function is equivalent to following code snippet.

<Code snippet "qbluetoothserver.cpp:listen" not found>        <Code snippet "qbluetoothserver.cpp:listen2" not found>        <Code snippet "qbluetoothserver.cpp:listen3" not found>

See also

isListening() newConnection() listen()

PySide6.QtBluetooth.QBluetoothServer.maxPendingConnections()

Return type

int

Returns the maximum number of pending connections.

See also

setMaxPendingConnections()

PySide6.QtBluetooth.QBluetoothServer.newConnection()

PySide6.QtBluetooth.QBluetoothServer.nextPendingConnection()

Return type

PySide6.QtBluetooth.QBluetoothSocket

Returns a pointer to the QBluetoothSocket for the next pending connection. It is the callers responsibility to delete the pointer.

PySide6.QtBluetooth.QBluetoothServer.securityFlags()

Return type

SecurityFlags

Returns the Bluetooth security flags.

See also

setSecurityFlags()

PySide6.QtBluetooth.QBluetoothServer.serverAddress()

Return type

PySide6.QtBluetooth.QBluetoothAddress

Returns the server address.

PySide6.QtBluetooth.QBluetoothServer.serverPort()

Return type

quint16

Returns the server port number.

PySide6.QtBluetooth.QBluetoothServer.serverType()

Return type

Protocol

Returns the type of the QBluetoothServer .

PySide6.QtBluetooth.QBluetoothServer.setMaxPendingConnections(numConnections)

Parameters

numConnections – int

Sets the maximum number of pending connections to numConnections. If the number of pending sockets exceeds this limit new sockets will be rejected.

See also

maxPendingConnections()

PySide6.QtBluetooth.QBluetoothServer.setSecurityFlags(security)

Parameters

security – SecurityFlags

Sets the Bluetooth security flags to security. This function must be called before calling listen() . The Bluetooth link will always be encrypted when using Bluetooth 2.1 devices as encryption is mandatory.

Android only supports two levels of security (secure and non-secure). If this flag is set to NoSecurity the server object will not employ any authentication or encryption. Any other security flag combination will trigger a secure Bluetooth connection.

On macOS, security flags are not supported and will be ignored.

See also

securityFlags()