/// <summary>
/// Reads data from the socket asynchronously.
/// </summary>
/// <param name="readContext">The read context.</param>
/// <returns>A non-data task.</returns>
private async Task ReadAsync(AsyncSocketReadContext readContext)
{
while (Socket.Connected)
{
var result = await readContext.HandleInternal(this);
switch (result.State)
{
case AsyncSocketReadContextState.Error:
{
readContext.HandleError(this);
goto case AsyncSocketReadContextState.LostConnection;
}
case AsyncSocketReadContextState.LostConnection:
{
try
{
Socket.Disconnect(false);
Socket.Shutdown(SocketShutdown.Both);
}
catch { }
readContext.HandleDisconnect(this);
break;
}
case AsyncSocketReadContextState.ReadAllData:
{
result.State = readContext.HandleRead(result);
if (result.State == AsyncSocketReadContextState.ReadAllData)
{
result.Buffer = new byte[0];
}
else if (result.State == AsyncSocketReadContextState.Error)
{
goto case AsyncSocketReadContextState.Error;
}
else if (result.State == AsyncSocketReadContextState.LostConnection)
{
goto case AsyncSocketReadContextState.LostConnection;
}
break;
}
// implicit: case AsyncSocketReadContextState.AwaitingData:
default:
{
// Do nothing ...
break;
}
}
}
}
/// <summary>
/// Will handle the read of the socket.
/// </summary>
/// <param name="readContext">The read context to use.</param>
/// <remarks>This call starts an asynchronous task for reading.</remarks>
public void Read(AsyncSocketReadContext readContext)
{
Task.Run(async() => await ReadAsync(readContext));
}
