internal Task SendAsync(string line)
{
try
{
if (connection == null)
{
Console.WriteLine($"[client] (no connection; cannot send)");
return(done);
}
else if (string.IsNullOrEmpty(line))
{
return(done);
}
else
{
var buffer = connection.Output.Alloc();
Console.WriteLine($"[client] sending {line.Length} bytes...");
WritableBufferExtensions.WriteAsciiString(ref buffer, line);
return(buffer.FlushAsync());
}
}
catch (Exception ex)
{
Program.WriteError(ex);
return(done);
}
}
public void CopyTo(bool chunk, ref WritableBuffer buffer)
{
foreach (var header in _headers)
{
buffer.Write(_headersStartBytes.Slice());
WritableBufferExtensions.WriteAsciiString(ref buffer, header.Key);
buffer.Write(_headersSeperatorBytes.Slice());
WritableBufferExtensions.WriteAsciiString(ref buffer, header.Value);
}
if (chunk)
{
buffer.Write(_chunkedHeaderBytes.Slice());
}
buffer.Write(_serverHeaderBytes.Slice());
var date = _dateHeaderValueManager.GetDateHeaderValues().Bytes;
buffer.Write(date.Slice());
buffer.Write(_headersEndBytes.Slice());
}
internal static Task CompleteHandshakeAsync(ref HttpRequest request, WebSocketConnection socket)
{
var key = request.Headers.GetRaw("Sec-WebSocket-Key");
var connection = socket.Connection;
const int ResponseTokenLength = 28;
var buffer = connection.Output.Alloc(StandardPrefixBytes.Length +
ResponseTokenLength + StandardPostfixBytes.Length);
string hashBase64 = ComputeReply(key, buffer.Memory);
if (hashBase64.Length != ResponseTokenLength)
{
throw new InvalidOperationException("Unexpected response key length");
}
WebSocketServer.WriteStatus($"Response token: {hashBase64}");
buffer.Write(StandardPrefixBytes, 0, StandardPrefixBytes.Length);
WritableBufferExtensions.WriteAsciiString(ref buffer, hashBase64);
buffer.Write(StandardPostfixBytes, 0, StandardPostfixBytes.Length);
return(buffer.FlushAsync());
}