protected override async Task HandleAsync(
ISocketConnection connection,
InitializeConnectionMessage message,
CancellationToken cancellationToken)
{
ConnectionStatus connectionStatus =
await _socketSessionInterceptor.OnConnectAsync(
connection, message, cancellationToken);
if (connectionStatus.Accepted)
{
await connection.SendAsync(AcceptConnectionMessage.Default, cancellationToken);
await connection.SendAsync(KeepConnectionAliveMessage.Default, cancellationToken);
}
else
{
var rejectMessage = connectionStatus.Extensions == null
? new RejectConnectionMessage(connectionStatus.Message)
: new RejectConnectionMessage(
connectionStatus.Message,
connectionStatus.Extensions);
await connection.SendAsync(
rejectMessage.Serialize(),
cancellationToken);
await connection.CloseAsync(
connectionStatus.Message,
SocketCloseStatus.PolicyViolation,
cancellationToken);
}
}
public async Task HandleAsync(CancellationToken cancellationToken)
{
using (var cts = CancellationTokenSource
.CreateLinkedTokenSource(cancellationToken))
{
if (await _connection.TryOpenAsync().ConfigureAwait(false))
{
try
{
_keepAlive.Begin(cts.Token);
_messageProcessor.Begin(cts.Token);
await _messageReciver.ReceiveAsync(cts.Token)
.ConfigureAwait(false);
}
finally
{
cts.Cancel();
await _connection.CloseAsync(
"Session ended.",
SocketCloseStatus.NormalClosure,
CancellationToken.None)
.ConfigureAwait(false);
}
}
}
}
public async Task HandleAsync(CancellationToken cancellationToken)
{
using var cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
if (await _connection.TryOpenAsync())
{
try
{
_keepAlive.Begin(cts.Token);
_messageProcessor.Begin(cts.Token);
await _messageReceiver.ReceiveAsync(cts.Token);
}
catch (OperationCanceledException)
{
// OperationCanceledException are catched and will not
// bubble further. We will just close the current subscription
// context.
}
finally
{
cts.Cancel();
await _connection.CloseAsync(
"Session ended.",
SocketCloseStatus.NormalClosure,
CancellationToken.None);
}
}
}
protected override Task HandleAsync(
ISocketConnection connection,
TerminateConnectionMessage message,
CancellationToken cancellationToken)
{
return(connection.CloseAsync(
"Connection terminated by user.",
SocketCloseStatus.NormalClosure,
cancellationToken));
}
public async Task ReturnAsync(
ISocketConnection connection,
CancellationToken cancellationToken = default)
{
await _semaphoreSlim.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
if (_connections.TryGetValue(connection.Name, out ConnectionInfo? connectionInfo))
{
connectionInfo.Rentals--;
}
else
{
throw new ArgumentException(
"The specified connection does not belong to this pool.",
nameof(connection));
}
if (connectionInfo.Rentals < 1)
{
try
{
for (int i = 0; i < _connectionInterceptors.Length; i++)
{
await _connectionInterceptors[i].OnDisconnectAsync(
connectionInfo.Connection)
.ConfigureAwait(false);
}
await TerminateConnectionAsync(connection, cancellationToken)
.ConfigureAwait(false);
_connections.Remove(connection.Name);
await connection.CloseAsync(
"All subscriptions closed.",
SocketCloseStatus.NormalClosure,
cancellationToken)
.ConfigureAwait(false);
}
catch
{
// we ignore errors here
}
finally
{
connection.Dispose();
}
}
}
finally
{
_semaphoreSlim.Release();
}
}
protected override async Task HandleAsync(
ISocketConnection connection,
TerminateConnectionMessage message,
CancellationToken cancellationToken)
{
await connection.CloseAsync(
"Connection terminated by user.",
SocketCloseStatus.NormalClosure,
cancellationToken);
await _socketSessionInterceptor.OnCloseAsync(connection, cancellationToken);
}
protected override async Task HandleAsync(
ISocketConnection connection,
InitializeConnectionMessage message,
CancellationToken cancellationToken)
{
ConnectionStatus connectionStatus =
_connectMessageInterceptor == null
? ConnectionStatus.Accept()
: await _connectMessageInterceptor.OnReceiveAsync(
connection, message, cancellationToken)
.ConfigureAwait(false);
if (connectionStatus.Accepted)
{
await connection.SendAsync(
AcceptConnectionMessage.Default.Serialize(),
cancellationToken)
.ConfigureAwait(false);
await connection.SendAsync(
KeepConnectionAliveMessage.Default.Serialize(),
cancellationToken)
.ConfigureAwait(false);
}
else
{
var rejectMessage = connectionStatus.Extensions == null
? new RejectConnectionMessage(
connectionStatus.Message)
: new RejectConnectionMessage(
connectionStatus.Message,
connectionStatus.Extensions);
await connection.SendAsync(
rejectMessage.Serialize(),
cancellationToken)
.ConfigureAwait(false);
// TODO : resources
await connection.CloseAsync(
connectionStatus.Message,
SocketCloseStatus.PolicyViolation,
cancellationToken)
.ConfigureAwait(false);
}
}