public void Connected(ClientHandshake handshake)
{
((IWebSocket)webSocket).Connected(handshake);
}
private ClientHandshake ParseClientHandshake(ArraySegment <byte> byteShake)
{
// the "grammar" of the handshake
var pattern = @"^(?<connect>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" + // request line
@"((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]+)\r\n)+"; // unordered set of fields (name-chars colon space any-chars cr lf)
// subtract the challenge bytes from the handshake
var handshake = new ClientHandshake();
ArraySegment <byte> challenge = new ArraySegment <byte>(byteShake.Array, byteShake.Count - 8, 8); // -8 : eight byte challenge
handshake.ChallengeBytes = challenge;
// get the rest of the handshake
var utf8_handshake = Encoding.UTF8.GetString(byteShake.Array, 0, byteShake.Count - 8);
// match the handshake against the "grammar"
var regex = new Regex(pattern, RegexOptions.IgnoreCase);
var match = regex.Match(utf8_handshake);
var fields = match.Groups;
// save the request path
handshake.ResourcePath = fields["path"].Value;
// run through every match and save them in the handshake object
for (int i = 0; i < fields["field_name"].Captures.Count; i++)
{
var name = fields["field_name"].Captures[i].ToString();
var value = fields["field_value"].Captures[i].ToString();
switch (name.ToLower())
{
case "sec-websocket-version":
handshake.Version = int.Parse(value);
break;
case "sec-websocket-key":
handshake.Key1 = value;
break;
case "sec-websocket-key1":
handshake.Key1 = value;
break;
case "sec-websocket-key2":
handshake.Key2 = value;
break;
case "sec-websocket-protocol":
handshake.SubProtocol = value;
break;
case "sec-websocket-origin":
handshake.Origin = value;
break;
case "origin":
handshake.Origin = value;
break;
case "host":
handshake.Host = value;
break;
case "cookie":
// create and fill a cookie collection from the data in the handshake
handshake.Cookies = new HttpCookieCollection();
var cookies = value.Split(';');
foreach (var item in cookies)
{
// the name if before the '=' char
var c_name = item.Remove(item.IndexOf('='));
// the value is after
var c_value = item.Substring(item.IndexOf('=') + 1);
// put the cookie in the collection (this also parses the sub-values and such)
handshake.Cookies.Add(new HttpCookie(c_name.TrimStart(), c_value));
}
break;
default:
// some field that we don't know about
if (handshake.AdditionalFields == null)
{
handshake.AdditionalFields = new Dictionary <string, string>();
}
handshake.AdditionalFields[name] = value;
break;
}
}
return(handshake);
}
public abstract void Connected(ClientHandshake handshake);
