public async Task <bool> TryPingAsync(IOBehavior ioBehavior, CancellationToken cancellationToken)
{
VerifyState(State.Connected);
// send ping payload to verify client and server socket are still connected
try
{
await SendAsync(PingPayload.Create(), ioBehavior, cancellationToken).ConfigureAwait(false);
var payload = await ReceiveReplyAsync(ioBehavior, cancellationToken).ConfigureAwait(false);
OkPayload.Create(payload);
return(true);
}
catch (EndOfStreamException)
{
}
catch (IOException)
{
}
catch (SocketException)
{
}
VerifyState(State.Failed);
return(false);
}
public async Task <bool> TryPingAsync(IOBehavior ioBehavior, CancellationToken cancellationToken)
{
// check if client socket is still connected
// http://stackoverflow.com/questions/2661764/how-to-check-if-a-socket-is-connected-disconnected-in-c
if (m_socket.Poll(1, SelectMode.SelectRead) && m_socket.Available == 0)
{
return(false);
}
// client socket is still connected, send ping payload to verify server socket is still connected
try
{
await SendAsync(PingPayload.Create(), ioBehavior, cancellationToken).ConfigureAwait(false);
var payload = await ReceiveReplyAsync(ioBehavior, cancellationToken).ConfigureAwait(false);
OkPayload.Create(payload);
return(true);
}
catch (EndOfStreamException)
{
}
catch (SocketException)
{
}
return(false);
}
public async Task <bool> TryPingAsync(IOBehavior ioBehavior, CancellationToken cancellationToken)
{
await SendAsync(PingPayload.Create(), ioBehavior, cancellationToken).ConfigureAwait(false);
try
{
var payload = await ReceiveReplyAsync(ioBehavior, cancellationToken).ConfigureAwait(false);
OkPayload.Create(payload);
return(true);
}
catch (EndOfStreamException)
{
}
catch (SocketException)
{
}
return(false);
}