private void SendHeaders()
{
StreamWriter writer = new StreamWriter(this);
request.headerSent = true;
/* fake it before sending to allow for atomicity */
String requestString = null;
if (request.Proxy != null && !request.isSecured)
{
if (request.Proxy.Credentials != null &&
request.Method != "GET" &&
request.Method != "HEAD")
{
request.AddProxyAuthHeaders("Basic");
}
requestString = request.Method + " " +
request.Address +
" HTTP/" + request.protocolVersion.Major +
"." + request.protocolVersion.Minor + "\r\n";
}
else
{
requestString = request.Method + " " +
request.Address.PathAndQuery +
" HTTP/" + request.protocolVersion.Major +
"." + request.protocolVersion.Minor + "\r\n";
}
writer.Write(requestString);
writer.Write(request.Headers.ToString());
writer.Write("\r\n"); // terminating CRLF
writer.Flush();
}
private static void SendConnect(Socket sock, HttpWebRequest req)
{
// This stream does not own the socket
Stream stream = new NetworkStream(sock, false);
StreamWriter writer = new StreamWriter(stream);
String connectString = null;
String authHeader = null;
if (req.Proxy.Credentials != null)
{
// TODO : remove this from the SSL req
req.AddProxyAuthHeaders("Basic");
}
connectString = "CONNECT " + req.Address.Host +
":" + req.Address.Port +
" HTTP/" + req.protocolVersion.Major +
"." + req.protocolVersion.Minor + "\r\n";
authHeader = "Proxy-Authorization: " +
req.Headers["Proxy-Authorization"] + "\r\n";
writer.Write(connectString);
writer.Write(authHeader);
writer.Write("\r\n"); // terminating CRLF
writer.Flush();
writer.Close();
// stream is automatically closed , but the socket is
// still alive
}
private static void SendConnect(Socket sock, HttpWebRequest req)
{
// This stream does not own the socket
Stream stream = new NetworkStream(sock, false);
StreamWriter writer = new StreamWriter(stream);
String connectString = null;
String authHeader = null;
if(req.Proxy.Credentials != null)
{
// TODO : remove this from the SSL req
req.AddProxyAuthHeaders("Basic");
}
connectString= "CONNECT "+ req.Address.Host +
":" + req.Address.Port +
" HTTP/"+req.protocolVersion.Major+
"."+req.protocolVersion.Minor+"\r\n";
authHeader = "Proxy-Authorization: " +
req.Headers["Proxy-Authorization"] + "\r\n";
writer.Write(connectString);
writer.Write(authHeader);
writer.Write("\r\n");// terminating CRLF
writer.Flush();
writer.Close();
// stream is automatically closed , but the socket is
// still alive
}
/* returns this WebRequest or a new one.
* If nothing can be done, it will return the same 'ol
* request.
* Note: will change substantially soon*/
public WebRequest Recurse(HttpWebRequest request,HttpWebResponse response)
{
HttpStatusCode code=response.StatusCode;
switch(code)
{
case HttpStatusCode.OK:
{
if(http==HttpAuthState.Trying) http=HttpAuthState.OK;
if(proxy==HttpAuthState.Trying) proxy=HttpAuthState.OK;
return request;
}
break; /* never reached */
case HttpStatusCode.ProxyAuthenticationRequired:
{
String challenge=null;
if(proxy==HttpAuthState.Trying || proxy==HttpAuthState.Failed)
{
proxy=HttpAuthState.Failed;
return request;
}
challenge=response.Headers["Proxy-Authenticate"];
request.ResetRequest(false);
if(request.AddProxyAuthHeaders(challenge))
{
request.ResetRequest(true);
proxy=HttpAuthState.Trying;
return request;
}
else
{
proxy=HttpAuthState.Failed;
return request;
}
}
break;
case HttpStatusCode.Forbidden:
{
String challenge=null;
if(http==HttpAuthState.Trying || http==HttpAuthState.Failed)
{
http=HttpAuthState.Failed;
return request;
}
challenge=response.Headers["WWW-Authenticate"];
request.ResetRequest(false);
if(request.AddHttpAuthHeaders(challenge))
{
request.ResetRequest(true);
http=HttpAuthState.Trying;
return request;
}
else
{
http=HttpAuthState.Failed;
return request;
}
}
break;
case HttpStatusCode.Redirect:
case HttpStatusCode.Moved :
case HttpStatusCode.MultipleChoices :
case HttpStatusCode.SeeOther :
case HttpStatusCode.TemporaryRedirect:
/* case HttpStatusCode.Found : // Duplicate */
/* case HttpStatusCode.MovedPermanently : // Duplicate */
{
Uri newUri=response.ResponseUri;
if(request.allowAutoRedirect && newUri!=null &&
redirections<request.MaximumAutomaticRedirections &&
(request.Method=="GET" || request.Method=="HEAD"))
{
/* ok redirect it */
request.ResetRequest(true);
request.SetAddress(newUri);
redirections++;
return request;
}
}
break;
}
return request;
}
/* returns this WebRequest or a new one.
* If nothing can be done, it will return the same 'ol
* request.
* Note: will change substantially soon*/
public WebRequest Recurse(HttpWebRequest request, HttpWebResponse response)
{
HttpStatusCode code = response.StatusCode;
switch (code)
{
case HttpStatusCode.Continue:
{
// Drop this response so that real one can be read.
request.response = null;
return(request);
}
case HttpStatusCode.OK:
{
if (http == HttpAuthState.Trying)
{
http = HttpAuthState.OK;
}
if (proxy == HttpAuthState.Trying)
{
proxy = HttpAuthState.OK;
}
return(request);
}
break; /* never reached */
case HttpStatusCode.ProxyAuthenticationRequired:
{
String challenge = null;
if (proxy == HttpAuthState.Trying || proxy == HttpAuthState.Failed)
{
proxy = HttpAuthState.Failed;
return(request);
}
challenge = response.Headers["Proxy-Authenticate"];
request.ResetRequest(false);
if (request.AddProxyAuthHeaders(challenge))
{
request.ResetRequest(true);
proxy = HttpAuthState.Trying;
return(request);
}
else
{
proxy = HttpAuthState.Failed;
return(request);
}
}
break;
case HttpStatusCode.Forbidden:
{
String challenge = null;
if (http == HttpAuthState.Trying || http == HttpAuthState.Failed)
{
http = HttpAuthState.Failed;
return(request);
}
challenge = response.Headers["WWW-Authenticate"];
request.ResetRequest(false);
if (request.AddHttpAuthHeaders(challenge))
{
request.ResetRequest(true);
http = HttpAuthState.Trying;
return(request);
}
else
{
http = HttpAuthState.Failed;
return(request);
}
}
break;
case HttpStatusCode.Redirect:
case HttpStatusCode.Moved:
case HttpStatusCode.MultipleChoices:
case HttpStatusCode.SeeOther:
case HttpStatusCode.TemporaryRedirect:
/* case HttpStatusCode.Found : // Duplicate */
/* case HttpStatusCode.MovedPermanently : // Duplicate */
{
Uri newUri = response.ResponseUri;
if (request.allowAutoRedirect && newUri != null &&
redirections < request.MaximumAutomaticRedirections &&
(request.Method == "GET" || request.Method == "HEAD"))
{
/* ok redirect it */
request.ResetRequest(true);
request.SetAddress(newUri);
redirections++;
return(request);
}
}
break;
}
return(request);
}
