/// <summary>
/// Cleans up any resources being used.
/// </summary>
public void Dispose()
{
if(m_State == SIP_StackState.Disposed){
return;
}
Stop();
m_State = SIP_StackState.Disposed;
// TODO: "clean" clean up with disposing state, wait some time transaction/dialogs to die, block new ones.
// TODO: Currently stack switched Disposed state before all transactions has disposed, so some active
// transaction which accesses stack will get disposed exception.
// Release events.
this.RequestReceived = null;
this.ResponseReceived = null;
this.Error = null;
if(m_pTransactionLayer != null){
m_pTransactionLayer.Dispose();
}
if(m_pTransportLayer != null){
m_pTransportLayer.Dispose();
}
if(m_pNonceManager != null){
m_pNonceManager.Dispose();
}
if(m_pLogger != null){
m_pLogger.Dispose();
}
}
/// <summary>
/// Stops SIP stack.
/// </summary>
public void Stop()
{
if(m_State != SIP_StackState.Started){
return;
}
m_State = SIP_StackState.Stopping;
/* Cleanup order:
*) Unregister registrations.
*) Terminate dialogs.
*) Wait while all active transactions has terminated or timeout reaches.
*/
// Unregister registrations.
foreach(SIP_UA_Registration reg in m_pRegistrations.ToArray()){
reg.BeginUnregister(true);
}
// Terminate dialogs.
foreach(SIP_Dialog dialog in m_pTransactionLayer.Dialogs){
dialog.Terminate();
}
// Wait while all active transactions has completed.
DateTime start = DateTime.Now;
while(true){
bool activeTransactions = false;
foreach(SIP_Transaction tr in m_pTransactionLayer.Transactions){
// We have active transactions.
if(tr.State == SIP_TransactionState.WaitingToStart || tr.State == SIP_TransactionState.Calling || tr.State == SIP_TransactionState.Proceeding || tr.State == SIP_TransactionState.Trying){
activeTransactions = true;
break;
}
}
if(activeTransactions){
System.Threading.Thread.Sleep(500);
// Timeout.
if(((TimeSpan)(DateTime.Now - start)).Seconds > 10){
break;
}
}
else{
break;
}
}
// REMOVE ME: Dispose Transaction layer instead.
foreach(SIP_Transaction tr in m_pTransactionLayer.Transactions){
try{
tr.Dispose();
}
catch{
}
}
m_pTransportLayer.Stop();
m_State = SIP_StackState.Stopped;
}
/// <summary>
/// Starts SIP stack.
/// </summary>
public void Start()
{
if(m_State == SIP_StackState.Started){
return;
}
m_State = SIP_StackState.Started;
m_pTransportLayer.Start();
}