public override bool Handshake(IWebSocketSession session, WebSocketReceiveFilterBase previousFilter, out IReceiveFilter <IWebSocketFragment> dataFrameReader)
{
if (!VersionTag.Equals(session.SecWebSocketVersion) && NextProcessor != null)
{
return(NextProcessor.Handshake(session, previousFilter, out dataFrameReader));
}
dataFrameReader = null;
session.ProtocolProcessor = this;
if (!session.AppServer.ValidateHandshake(session, session.Items.GetValue <string>(OriginKey, string.Empty)))
{
return(false);
}
var secWebSocketKey = session.Items.GetValue <string>(WebSocketConstant.SecWebSocketKey, string.Empty);
if (string.IsNullOrEmpty(secWebSocketKey))
{
return(false);
}
var responseBuilder = new StringBuilder();
string secKeyAccept = string.Empty;
try
{
secKeyAccept = Convert.ToBase64String(SHA1.Create().ComputeHash(Encoding.ASCII.GetBytes(secWebSocketKey + m_Magic)));
}
catch (Exception)
{
return(false);
}
responseBuilder.AppendWithCrCf(WebSocketConstant.ResponseHeadLine10);
responseBuilder.AppendWithCrCf(WebSocketConstant.ResponseUpgradeLine);
responseBuilder.AppendWithCrCf(WebSocketConstant.ResponseConnectionLine);
responseBuilder.AppendFormatWithCrCf(WebSocketConstant.ResponseAcceptLine, secKeyAccept);
var subProtocol = session.GetAvailableSubProtocol(session.Items.GetValue <string>(WebSocketConstant.SecWebSocketProtocol, string.Empty));
if (!string.IsNullOrEmpty(subProtocol))
{
responseBuilder.AppendFormatWithCrCf(WebSocketConstant.ResponseProtocolLine, subProtocol);
}
responseBuilder.AppendWithCrCf();
byte[] data = Encoding.UTF8.GetBytes(responseBuilder.ToString());
session.SendRawData(data, 0, data.Length);
dataFrameReader = new WebSocketDataFrameReceiveFilter();
return(true);
}
public bool IsUpToDate(VersionTag?versionTag)
{
return(versionTag?.Equals(VersionTag) ?? true);
}
