private async System.Threading.Tasks.Task <Response> ReceiveMessage()
{
// Receive one web socket message
System.Collections.Generic.List <System.Collections.Generic.IEnumerable <byte> > segments = new System.Collections.Generic.List <System.Collections.Generic.IEnumerable <byte> >();
try
{
while (true)
{
byte[] buffer = new byte[4096];
var segment = new System.ArraySegment <byte>(buffer, 0, buffer.Length);
System.Net.WebSockets.WebSocketReceiveResult rcvResult = await ws.ReceiveAsync(segment, stopServerTokenSource.Token);
// Accumulate the byte arrays in a list, we will join them later
segments.Add(segment.Skip(segment.Offset).Take(rcvResult.Count));
if (rcvResult.EndOfMessage)
{
break;
}
}
}
catch (System.Net.WebSockets.WebSocketException e)
{
throw e.InnerException;
}
catch (System.Exception)
{
throw new ErrorException("Error receiving response from server.");
}
try
{
byte[] bytes = segments.SelectMany(t => t).ToArray <byte>();
string msg = System.Text.Encoding.UTF8.GetString(bytes);
return(Parse(msg));
}
catch (ErrorException e)
{
// Dispatch already built error
throw e;
}
catch (System.Exception)
{
throw new ErrorException("Error while parsing response from server.");
}
}
/// <summary>
/// Creates a new array segment by taking a number of elements from the end of this array segment.
/// </summary>
/// <typeparam name="T">The type of elements contained in the array.</typeparam>
/// <param name="segment">The array segment.</param>
/// <param name="count">
/// The number of elements in the new array segment. This must be in the range
/// <c>[0, <paramref name="segment" />.Count]</c>.
/// </param>
/// <returns>The new array segment.</returns>
public static ArraySegment <T> TakeLast <T>(this ArraySegment <T> segment, int count)
{
return(segment.Skip(segment.Count - count));
}
