// As client
private void sendProxyConnectRequest ()
{
var req = HttpRequest.CreateConnectRequest (_uri);
var res = sendHttpRequest (req, 90000);
if (res.IsProxyAuthenticationRequired) {
var chal = res.Headers["Proxy-Authenticate"];
_logger.Warn (
String.Format ("Received a proxy authentication requirement for '{0}'.", chal));
if (chal.IsNullOrEmpty ())
throw new WebSocketException ("No proxy authentication challenge is specified.");
var authChal = AuthenticationChallenge.Parse (chal);
if (authChal == null)
throw new WebSocketException ("An invalid proxy authentication challenge is specified.");
if (_proxyCredentials != null) {
if (res.HasConnectionClose) {
releaseClientResources ();
_tcpClient = new TcpClient (_proxyUri.DnsSafeHost, _proxyUri.Port);
_stream = _tcpClient.GetStream ();
}
var authRes = new AuthenticationResponse (authChal, _proxyCredentials, 0);
req.Headers["Proxy-Authorization"] = authRes.ToString ();
res = sendHttpRequest (req, 15000);
}
if (res.IsProxyAuthenticationRequired)
throw new WebSocketException ("A proxy authentication is required.");
}
if (res.StatusCode[0] != '2')
throw new WebSocketException (
"The proxy has failed a connection to the requested host and port.");
}
// As client
private HttpRequest createHandshakeRequest ()
{
var ret = HttpRequest.CreateWebSocketRequest (_uri);
var headers = ret.Headers;
if (!_origin.IsNullOrEmpty ())
headers["Origin"] = _origin;
headers["Sec-WebSocket-Key"] = _base64Key;
if (_protocols != null)
headers["Sec-WebSocket-Protocol"] = _protocols.ToString (", ");
var exts = createExtensions ();
if (exts != null)
headers["Sec-WebSocket-Extensions"] = exts;
headers["Sec-WebSocket-Version"] = _version;
AuthenticationResponse authRes = null;
if (_authChallenge != null && _credentials != null) {
authRes = new AuthenticationResponse (_authChallenge, _credentials, _nonceCount);
_nonceCount = authRes.NonceCount;
}
else if (_preAuth) {
authRes = new AuthenticationResponse (_credentials);
}
if (authRes != null)
headers["Authorization"] = authRes.ToString ();
if (_cookies.Count > 0)
ret.SetCookies (_cookies);
return ret;
}
// As client
private HttpResponse sendHandshakeRequest ()
{
var req = createHandshakeRequest ();
var res = sendHttpRequest (req, 90000);
if (res.IsUnauthorized) {
var chal = res.Headers["WWW-Authenticate"];
_logger.Warn (String.Format ("Received an authentication requirement for '{0}'.", chal));
if (chal.IsNullOrEmpty ()) {
_logger.Error ("No authentication challenge is specified.");
return res;
}
_authChallenge = AuthenticationChallenge.Parse (chal);
if (_authChallenge == null) {
_logger.Error ("An invalid authentication challenge is specified.");
return res;
}
if (_credentials != null &&
(!_preAuth || _authChallenge.Scheme == AuthenticationSchemes.Digest)) {
if (res.HasConnectionClose) {
releaseClientResources ();
setClientStream ();
}
var authRes = new AuthenticationResponse (_authChallenge, _credentials, _nonceCount);
_nonceCount = authRes.NonceCount;
req.Headers["Authorization"] = authRes.ToString ();
res = sendHttpRequest (req, 15000);
}
}
if (res.IsRedirect) {
var url = res.Headers["Location"];
_logger.Warn (String.Format ("Received a redirection to '{0}'.", url));
if (_enableRedirection) {
if (url.IsNullOrEmpty ()) {
_logger.Error ("No url to redirect is located.");
return res;
}
Uri uri;
string msg;
if (!url.TryCreateWebSocketUri (out uri, out msg)) {
_logger.Error ("An invalid url to redirect is located: " + msg);
return res;
}
releaseClientResources ();
_uri = uri;
_secure = uri.Scheme == "wss";
setClientStream ();
return sendHandshakeRequest ();
}
}
return res;
}
