public override void Abort ()
{
if (Interlocked.CompareExchange (ref aborted, 1, 0) == 1)
return;
if (haveResponse && finished_reading)
return;
haveResponse = true;
if (abortHandler != null) {
try {
abortHandler (this, EventArgs.Empty);
} catch (Exception) {}
abortHandler = null;
}
if (asyncWrite != null) {
WebAsyncResult r = asyncWrite;
if (!r.IsCompleted) {
try {
WebException wexc = new WebException ("Aborted.", WebExceptionStatus.RequestCanceled);
r.SetCompleted (false, wexc);
r.DoCallback ();
} catch {}
}
asyncWrite = null;
}
if (asyncRead != null) {
WebAsyncResult r = asyncRead;
if (!r.IsCompleted) {
try {
WebException wexc = new WebException ("Aborted.", WebExceptionStatus.RequestCanceled);
r.SetCompleted (false, wexc);
r.DoCallback ();
} catch {}
}
asyncRead = null;
}
if (writeStream != null) {
try {
writeStream.Close ();
writeStream = null;
} catch {}
}
if (webResponse != null) {
try {
webResponse.Close ();
webResponse = null;
} catch {}
}
}
internal void ReadAll()
{
WebConnectionStream wce = stream as WebConnectionStream;
if (wce == null)
{
return;
}
try {
wce.ReadAll();
} catch {}
}
internal void ReadAll()
{
WebConnectionStream webConnectionStream = stream as WebConnectionStream;
if (webConnectionStream != null)
{
try
{
webConnectionStream.ReadAll();
}
catch
{
}
}
}
internal void ReadAll()
{
WebConnectionStream webConnectionStream = this.stream as WebConnectionStream;
if (webConnectionStream == null)
{
return;
}
try
{
webConnectionStream.ReadAll();
}
catch
{
}
}
public override void Abort()
{
haveResponse = true;
aborted = true;
if (asyncWrite != null)
{
WebAsyncResult r = asyncWrite;
WebException wexc = new WebException("Aborted.", WebExceptionStatus.RequestCanceled);
r.SetCompleted(false, wexc);
r.DoCallback();
asyncWrite = null;
}
if (asyncRead != null)
{
WebAsyncResult r = asyncRead;
WebException wexc = new WebException("Aborted.", WebExceptionStatus.RequestCanceled);
r.SetCompleted(false, wexc);
r.DoCallback();
asyncRead = null;
}
if (abortHandler != null)
{
try {
abortHandler(this, EventArgs.Empty);
} catch (Exception) {}
abortHandler = null;
}
if (writeStream != null)
{
try {
writeStream.Close();
writeStream = null;
} catch {}
}
if (webResponse != null)
{
try {
webResponse.Close();
webResponse = null;
} catch {}
}
}
void HandleNtlmAuth (WebAsyncResult r)
{
WebConnectionStream wce = webResponse.GetResponseStream () as WebConnectionStream;
if (wce != null) {
WebConnection cnc = wce.Connection;
cnc.PriorityRequest = this;
bool isProxy = (proxy != null && !proxy.IsBypassed (actualUri));
ICredentials creds = (!isProxy) ? credentials : proxy.Credentials;
if (creds != null) {
cnc.NtlmCredential = creds.GetCredential (requestUri, "NTLM");
cnc.UnsafeAuthenticatedConnectionSharing = unsafe_auth_blah;
}
}
r.Reset ();
finished_reading = false;
haveResponse = false;
webResponse.ReadAll ();
webResponse = null;
}
internal void SetWriteStream(WebConnectionStream stream)
{
if (aborted)
{
return;
}
writeStream = stream;
if (bodyBuffer != null)
{
webHeaders.RemoveInternal("Transfer-Encoding");
contentLength = bodyBufferLength;
writeStream.SendChunked = false;
}
SendRequestHeaders();
haveRequest = true;
if (bodyBuffer != null)
{
// The body has been written and buffered. The request "user"
// won't write it again, so we must do it.
writeStream.Write(bodyBuffer, 0, bodyBufferLength);
bodyBuffer = null;
writeStream.Close();
}
else if (method == "PUT" || method == "POST" || method == "OPTIONS")
{
if (getResponseCalled && !writeStream.RequestWritten)
{
writeStream.WriteRequest();
}
}
if (asyncWrite != null)
{
asyncWrite.SetCompleted(false, stream);
asyncWrite.DoCallback();
asyncWrite = null;
}
}
internal void SetWriteStream (WebConnectionStream stream)
{
if (Aborted)
return;
writeStream = stream;
if (bodyBuffer != null) {
webHeaders.RemoveInternal ("Transfer-Encoding");
contentLength = bodyBufferLength;
writeStream.SendChunked = false;
}
SendRequestHeaders (false);
haveRequest = true;
if (bodyBuffer != null) {
// The body has been written and buffered. The request "user"
// won't write it again, so we must do it.
if (ntlm_auth_state != NtlmAuthState.Challenge) {
writeStream.Write (bodyBuffer, 0, bodyBufferLength);
bodyBuffer = null;
writeStream.Close ();
}
} else if (method != "HEAD" && method != "GET" && method != "MKCOL" && method != "CONNECT" &&
method != "TRACE") {
if (getResponseCalled && !writeStream.RequestWritten)
writeStream.WriteRequest ();
}
if (asyncWrite != null) {
asyncWrite.SetCompleted (false, stream);
asyncWrite.DoCallback ();
asyncWrite = null;
}
}
// Returns true if redirected
bool CheckFinalStatus(WebAsyncResult result)
{
if (result.GotException)
{
throw result.Exception;
}
Exception throwMe = result.Exception;
bodyBuffer = null;
HttpWebResponse resp = result.Response;
WebExceptionStatus protoError = WebExceptionStatus.ProtocolError;
HttpStatusCode code = 0;
if (throwMe == null && webResponse != null)
{
code = webResponse.StatusCode;
if (!authCompleted && ((code == HttpStatusCode.Unauthorized && credentials != null) ||
(ProxyQuery && code == HttpStatusCode.ProxyAuthenticationRequired)))
{
if (!usedPreAuth && CheckAuthorization(webResponse, code))
{
// Keep the written body, so it can be rewritten in the retry
if (InternalAllowBuffering)
{
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
webResponse.Close();
return(true);
}
else if (method != "PUT" && method != "POST")
{
webResponse.Close();
return(true);
}
writeStream.InternalClose();
writeStream = null;
webResponse.Close();
webResponse = null;
throw new WebException("This request requires buffering " +
"of data for authentication or " +
"redirection to be sucessful.");
}
}
if ((int)code >= 400)
{
string err = String.Format("The remote server returned an error: ({0}) {1}.",
(int)code, webResponse.StatusDescription);
throwMe = new WebException(err, null, protoError, webResponse);
webResponse.ReadAll();
}
else if ((int)code == 304 && allowAutoRedirect)
{
string err = String.Format("The remote server returned an error: ({0}) {1}.",
(int)code, webResponse.StatusDescription);
throwMe = new WebException(err, null, protoError, webResponse);
}
else if ((int)code >= 300 && allowAutoRedirect && redirects > maxAutoRedirect)
{
throwMe = new WebException("Max. redirections exceeded.", null,
protoError, webResponse);
webResponse.ReadAll();
}
}
if (throwMe == null)
{
bool b = false;
int c = (int)code;
if (allowAutoRedirect && c >= 300)
{
if (InternalAllowBuffering && writeStream.WriteBufferLength > 0)
{
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
b = Redirect(result, code);
}
if (resp != null && c >= 300 && c != 304)
{
resp.ReadAll();
}
return(b);
}
if (writeStream != null)
{
writeStream.InternalClose();
writeStream = null;
}
webResponse = null;
throw throwMe;
}
static void ReadDone(IAsyncResult result)
{
WebConnection cnc = (WebConnection)result.AsyncState;
WebConnectionData data = cnc.Data;
Stream ns = cnc.nstream;
if (ns == null)
{
cnc.Close(true);
return;
}
int nread = -1;
try {
nread = ns.EndRead(result);
} catch (Exception e) {
cnc.HandleError(WebExceptionStatus.ReceiveFailure, e, "ReadDone1");
return;
}
if (nread == 0)
{
cnc.HandleError(WebExceptionStatus.ReceiveFailure, null, "ReadDone2");
return;
}
if (nread < 0)
{
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, null, "ReadDone3");
return;
}
int pos = -1;
nread += cnc.position;
if (cnc.readState == ReadState.None)
{
Exception exc = null;
try {
pos = cnc.GetResponse(cnc.buffer, nread);
} catch (Exception e) {
exc = e;
}
if (exc != null)
{
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, exc, "ReadDone4");
return;
}
}
if (cnc.readState != ReadState.Content)
{
int est = nread * 2;
int max = (est < cnc.buffer.Length) ? cnc.buffer.Length : est;
byte [] newBuffer = new byte [max];
Buffer.BlockCopy(cnc.buffer, 0, newBuffer, 0, nread);
cnc.buffer = newBuffer;
cnc.position = nread;
cnc.readState = ReadState.None;
InitRead(cnc);
return;
}
cnc.position = 0;
WebConnectionStream stream = new WebConnectionStream(cnc);
string contentType = data.Headers ["Transfer-Encoding"];
cnc.chunkedRead = (contentType != null && contentType.ToLower().IndexOf("chunked") != -1);
if (!cnc.chunkedRead)
{
stream.ReadBuffer = cnc.buffer;
stream.ReadBufferOffset = pos;
stream.ReadBufferSize = nread;
stream.CheckResponseInBuffer();
}
else if (cnc.chunkStream == null)
{
try {
cnc.chunkStream = new ChunkStream(cnc.buffer, pos, nread, data.Headers);
} catch (Exception e) {
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, e, "ReadDone5");
return;
}
}
else
{
cnc.chunkStream.ResetBuffer();
try {
cnc.chunkStream.Write(cnc.buffer, pos, nread);
} catch (Exception e) {
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, e, "ReadDone6");
return;
}
}
data.stream = stream;
if (!ExpectContent(data.StatusCode) || data.request.Method == "HEAD")
{
stream.ForceCompletion();
}
data.request.SetResponseData(data);
}
public override void Abort ()
{
if (Interlocked.CompareExchange (ref aborted, 1, 0) == 1)
return;
if (haveResponse && finished_reading)
return;
haveResponse = true;
if (abortHandler != null) {
try {
abortHandler (this, EventArgs.Empty);
} catch (Exception) {}
abortHandler = null;
}
if (asyncWrite != null) {
WebAsyncResult r = asyncWrite;
if (!r.IsCompleted) {
try {
WebException wexc = new WebException ("Aborted.", WebExceptionStatus.RequestCanceled);
r.SetCompleted (false, wexc);
r.DoCallback ();
} catch {}
}
asyncWrite = null;
}
if (asyncRead != null) {
WebAsyncResult r = asyncRead;
if (!r.IsCompleted) {
try {
WebException wexc = new WebException ("Aborted.", WebExceptionStatus.RequestCanceled);
r.SetCompleted (false, wexc);
r.DoCallback ();
} catch {}
}
asyncRead = null;
}
if (writeStream != null) {
try {
writeStream.Close ();
writeStream = null;
} catch {}
}
if (webResponse != null) {
try {
webResponse.Close ();
webResponse = null;
} catch {}
}
}
// Returns true if redirected
bool CheckFinalStatus (WebAsyncResult result)
{
if (result.GotException) {
bodyBuffer = null;
throw result.Exception;
}
Exception throwMe = result.Exception;
HttpWebResponse resp = result.Response;
WebExceptionStatus protoError = WebExceptionStatus.ProtocolError;
HttpStatusCode code = 0;
if (throwMe == null && webResponse != null) {
code = webResponse.StatusCode;
if (!authCompleted && ((code == HttpStatusCode.Unauthorized && credentials != null) ||
(ProxyQuery && code == HttpStatusCode.ProxyAuthenticationRequired))) {
if (!usedPreAuth && CheckAuthorization (webResponse, code)) {
// Keep the written body, so it can be rewritten in the retry
if (InternalAllowBuffering) {
// NTLM: This is to avoid sending data in the 'challenge' request
// We save it in the first request (first 401), don't send anything
// in the challenge request and send it in the response request along
// with the buffers kept form the first request.
if (ntlm_auth_state != NtlmAuthState.Response) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
return true;
} else if (method != "PUT" && method != "POST") {
bodyBuffer = null;
return true;
}
if (!ThrowOnError)
return false;
writeStream.InternalClose ();
writeStream = null;
webResponse.Close ();
webResponse = null;
bodyBuffer = null;
throw new WebException ("This request requires buffering " +
"of data for authentication or " +
"redirection to be sucessful.");
}
}
bodyBuffer = null;
if ((int) code >= 400) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
webResponse.ReadAll ();
} else if ((int) code == 304 && allowAutoRedirect) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
} else if ((int) code >= 300 && allowAutoRedirect && redirects >= maxAutoRedirect) {
throwMe = new WebException ("Max. redirections exceeded.", null,
protoError, webResponse);
webResponse.ReadAll ();
}
}
bodyBuffer = null;
if (throwMe == null) {
bool b = false;
int c = (int) code;
if (allowAutoRedirect && c >= 300) {
if (InternalAllowBuffering && writeStream.WriteBufferLength > 0) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
b = Redirect (result, code);
if (b && ntlm_auth_state != 0)
ntlm_auth_state = 0;
}
if (resp != null && c >= 300 && c != 304)
resp.ReadAll ();
return b;
}
if (!ThrowOnError)
return false;
if (writeStream != null) {
writeStream.InternalClose ();
writeStream = null;
}
webResponse = null;
throw throwMe;
}
internal void SetWriteStream (WebConnectionStream stream)
{
if (Aborted)
return;
writeStream = stream;
if (bodyBuffer != null) {
webHeaders.RemoveInternal ("Transfer-Encoding");
contentLength = bodyBufferLength;
writeStream.SendChunked = false;
}
SendRequestHeaders (false);
haveRequest = true;
if (bodyBuffer != null) {
// The body has been written and buffered. The request "user"
// won't write it again, so we must do it.
if (ntlm_auth_state != NtlmAuthState.Challenge) {
writeStream.Write (bodyBuffer, 0, bodyBufferLength);
bodyBuffer = null;
writeStream.Close ();
}
} else if (method != "HEAD" && method != "GET" && method != "MKCOL" && method != "CONNECT" &&
method != "TRACE") {
if (getResponseCalled && !writeStream.RequestWritten)
writeStream.WriteRequest ();
}
if (asyncWrite != null) {
asyncWrite.SetCompleted (false, stream);
asyncWrite.DoCallback ();
asyncWrite = null;
}
}
internal void SetWriteStream (WebConnectionStream stream)
{
if (Aborted)
return;
writeStream = stream;
if (bodyBuffer != null) {
webHeaders.RemoveInternal ("Transfer-Encoding");
contentLength = bodyBufferLength;
writeStream.SendChunked = false;
}
try {
var result = writeStream.SetHeadersAsync (false, SetWriteStreamCB, null);
if (result == null)
SetWriteStreamCB (null);
} catch (Exception exc) {
SetWriteStreamErrorCB (exc);
}
}
static void ReadDone(IAsyncResult result)
{
WebConnection cnc = (WebConnection)result.AsyncState;
WebConnectionData data = cnc.Data;
Stream ns = cnc.nstream;
if (ns == null)
{
cnc.Close(true);
return;
}
int nread = -1;
try {
nread = ns.EndRead(result);
} catch (ObjectDisposedException) {
return;
} catch (Exception e) {
if (e.InnerException is ObjectDisposedException)
{
return;
}
cnc.HandleError(WebExceptionStatus.ReceiveFailure, e, "ReadDone1");
return;
}
if (nread == 0)
{
cnc.HandleError(WebExceptionStatus.ReceiveFailure, null, "ReadDone2");
return;
}
if (nread < 0)
{
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, null, "ReadDone3");
return;
}
int pos = -1;
nread += cnc.position;
if (data.ReadState == ReadState.None)
{
Exception exc = null;
try {
pos = GetResponse(data, cnc.sPoint, cnc.buffer, nread);
} catch (Exception e) {
exc = e;
}
if (exc != null || pos == -1)
{
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, exc, "ReadDone4");
return;
}
}
if (data.ReadState == ReadState.Aborted)
{
cnc.HandleError(WebExceptionStatus.RequestCanceled, null, "ReadDone");
return;
}
if (data.ReadState != ReadState.Content)
{
int est = nread * 2;
int max = (est < cnc.buffer.Length) ? cnc.buffer.Length : est;
byte [] newBuffer = new byte [max];
Buffer.BlockCopy(cnc.buffer, 0, newBuffer, 0, nread);
cnc.buffer = newBuffer;
cnc.position = nread;
data.ReadState = ReadState.None;
InitRead(cnc);
return;
}
cnc.position = 0;
WebConnectionStream stream = new WebConnectionStream(cnc, data);
bool expect_content = ExpectContent(data.StatusCode, data.request.Method);
string tencoding = null;
if (expect_content)
{
tencoding = data.Headers ["Transfer-Encoding"];
}
cnc.chunkedRead = (tencoding != null && tencoding.IndexOf("chunked", StringComparison.OrdinalIgnoreCase) != -1);
if (!cnc.chunkedRead)
{
stream.ReadBuffer = cnc.buffer;
stream.ReadBufferOffset = pos;
stream.ReadBufferSize = nread;
try {
stream.CheckResponseInBuffer();
} catch (Exception e) {
cnc.HandleError(WebExceptionStatus.ReceiveFailure, e, "ReadDone7");
}
}
else if (cnc.chunkStream == null)
{
try {
cnc.chunkStream = new ChunkStream(cnc.buffer, pos, nread, data.Headers);
} catch (Exception e) {
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, e, "ReadDone5");
return;
}
}
else
{
cnc.chunkStream.ResetBuffer();
try {
cnc.chunkStream.Write(cnc.buffer, pos, nread);
} catch (Exception e) {
cnc.HandleError(WebExceptionStatus.ServerProtocolViolation, e, "ReadDone6");
return;
}
}
data.stream = stream;
if (!expect_content)
{
stream.ForceCompletion();
}
data.request.SetResponseData(data);
}
// Returns true if redirected
bool CheckFinalStatus (WebAsyncResult result)
{
if (result.GotException)
throw result.Exception;
Exception throwMe = result.Exception;
bodyBuffer = null;
HttpWebResponse resp = result.Response;
WebExceptionStatus protoError = WebExceptionStatus.ProtocolError;
HttpStatusCode code = 0;
if (throwMe == null && webResponse != null) {
code = webResponse.StatusCode;
if (!authCompleted && ((code == HttpStatusCode.Unauthorized && credentials != null) ||
(ProxyQuery && code == HttpStatusCode.ProxyAuthenticationRequired))) {
if (!usedPreAuth && CheckAuthorization (webResponse, code)) {
// Keep the written body, so it can be rewritten in the retry
if (InternalAllowBuffering) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
return true;
} else if (method != "PUT" && method != "POST") {
return true;
}
writeStream.InternalClose ();
writeStream = null;
webResponse.Close ();
webResponse = null;
throw new WebException ("This request requires buffering " +
"of data for authentication or " +
"redirection to be sucessful.");
}
}
if ((int) code >= 400) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
webResponse.ReadAll ();
} else if ((int) code == 304 && allowAutoRedirect) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
} else if ((int) code >= 300 && allowAutoRedirect && redirects >= maxAutoRedirect) {
throwMe = new WebException ("Max. redirections exceeded.", null,
protoError, webResponse);
webResponse.ReadAll ();
}
}
if (throwMe == null) {
bool b = false;
int c = (int) code;
if (allowAutoRedirect && c >= 300) {
if (InternalAllowBuffering && writeStream.WriteBufferLength > 0) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
b = Redirect (result, code);
}
if (resp != null && c >= 300 && c != 304)
resp.ReadAll ();
return b;
}
if (writeStream != null) {
writeStream.InternalClose ();
writeStream = null;
}
webResponse = null;
throw throwMe;
}
// Returns true if redirected
bool CheckFinalStatus (WebAsyncResult result)
{
if (result.GotException) {
bodyBuffer = null;
throw result.Exception;
}
Exception throwMe = result.Exception;
HttpWebResponse resp = result.Response;
WebExceptionStatus protoError = WebExceptionStatus.ProtocolError;
HttpStatusCode code = 0;
if (throwMe == null && webResponse != null) {
code = webResponse.StatusCode;
if ((!auth_state.IsCompleted && code == HttpStatusCode.Unauthorized && credentials != null) ||
(ProxyQuery && !proxy_auth_state.IsCompleted && code == HttpStatusCode.ProxyAuthenticationRequired)) {
if (!usedPreAuth && CheckAuthorization (webResponse, code)) {
// Keep the written body, so it can be rewritten in the retry
if (MethodWithBuffer) {
if (AllowWriteStreamBuffering) {
if (writeStream.WriteBufferLength > 0) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
return true;
}
//
// Buffering is not allowed but we have alternative way to get same content (we
// need to resent it due to NTLM Authentication).
//
if (ResendContentFactory != null) {
using (var ms = new MemoryStream ()) {
ResendContentFactory (ms);
bodyBuffer = ms.ToArray ();
bodyBufferLength = bodyBuffer.Length;
}
return true;
}
} else if (method != "PUT" && method != "POST") {
bodyBuffer = null;
return true;
}
if (!ThrowOnError)
return false;
writeStream.InternalClose ();
writeStream = null;
webResponse.Close ();
webResponse = null;
bodyBuffer = null;
throw new WebException ("This request requires buffering " +
"of data for authentication or " +
"redirection to be sucessful.");
}
}
bodyBuffer = null;
if ((int) code >= 400) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
webResponse.ReadAll ();
} else if ((int) code == 304 && allowAutoRedirect) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
} else if ((int) code >= 300 && allowAutoRedirect && redirects >= maxAutoRedirect) {
throwMe = new WebException ("Max. redirections exceeded.", null,
protoError, webResponse);
webResponse.ReadAll ();
}
}
bodyBuffer = null;
if (throwMe == null) {
bool b = false;
int c = (int) code;
if (allowAutoRedirect && c >= 300) {
b = Redirect (result, code, webResponse);
if (InternalAllowBuffering && writeStream.WriteBufferLength > 0) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
if (b && !unsafe_auth_blah) {
auth_state.Reset ();
proxy_auth_state.Reset ();
}
}
if (resp != null && c >= 300 && c != 304)
resp.ReadAll ();
return b;
}
if (!ThrowOnError)
return false;
if (writeStream != null) {
writeStream.InternalClose ();
writeStream = null;
}
webResponse = null;
throw throwMe;
}
internal void SetWriteStream (WebConnectionStream stream)
{
if (Aborted)
return;
writeStream = stream;
if (bodyBuffer != null) {
webHeaders.RemoveInternal ("Transfer-Encoding");
contentLength = bodyBufferLength;
writeStream.SendChunked = false;
}
byte[] requestHeaders = GetRequestHeaders ();
WebAsyncResult result = new WebAsyncResult (new AsyncCallback (SetWriteStreamCB), null);
writeStream.SetHeadersAsync (requestHeaders, result);
}
static void ReadDone (IAsyncResult result)
{
WebConnection cnc = (WebConnection) result.AsyncState;
WebConnectionData data = cnc.Data;
Stream ns = cnc.nstream;
if (ns == null) {
cnc.Close (true);
return;
}
int nread = -1;
try {
nread = ns.EndRead (result);
} catch (ObjectDisposedException) {
return;
} catch (Exception e) {
if (e.InnerException is ObjectDisposedException)
return;
cnc.HandleError (WebExceptionStatus.ReceiveFailure, e, "ReadDone1");
return;
}
if (nread == 0) {
cnc.HandleError (WebExceptionStatus.ReceiveFailure, null, "ReadDone2");
return;
}
if (nread < 0) {
cnc.HandleError (WebExceptionStatus.ServerProtocolViolation, null, "ReadDone3");
return;
}
int pos = -1;
nread += cnc.position;
if (cnc.readState == ReadState.None) {
Exception exc = null;
try {
pos = cnc.GetResponse (cnc.buffer, nread);
} catch (Exception e) {
exc = e;
}
if (exc != null || pos == -1) {
cnc.HandleError (WebExceptionStatus.ServerProtocolViolation, exc, "ReadDone4");
return;
}
}
if (cnc.readState != ReadState.Content) {
int est = nread * 2;
int max = (est < cnc.buffer.Length) ? cnc.buffer.Length : est;
byte [] newBuffer = new byte [max];
Buffer.BlockCopy (cnc.buffer, 0, newBuffer, 0, nread);
cnc.buffer = newBuffer;
cnc.position = nread;
cnc.readState = ReadState.None;
InitRead (cnc);
return;
}
cnc.position = 0;
WebConnectionStream stream = new WebConnectionStream (cnc);
bool expect_content = ExpectContent (data.StatusCode, data.request.Method);
string tencoding = null;
if (expect_content)
tencoding = data.Headers ["Transfer-Encoding"];
cnc.chunkedRead = (tencoding != null && tencoding.IndexOf ("chunked", StringComparison.OrdinalIgnoreCase) != -1);
if (!cnc.chunkedRead) {
stream.ReadBuffer = cnc.buffer;
stream.ReadBufferOffset = pos;
stream.ReadBufferSize = nread;
try {
stream.CheckResponseInBuffer ();
} catch (Exception e) {
cnc.HandleError (WebExceptionStatus.ReceiveFailure, e, "ReadDone7");
}
} else if (cnc.chunkStream == null) {
try {
cnc.chunkStream = new ChunkStream (cnc.buffer, pos, nread, data.Headers);
} catch (Exception e) {
cnc.HandleError (WebExceptionStatus.ServerProtocolViolation, e, "ReadDone5");
return;
}
} else {
cnc.chunkStream.ResetBuffer ();
try {
cnc.chunkStream.Write (cnc.buffer, pos, nread);
} catch (Exception e) {
cnc.HandleError (WebExceptionStatus.ServerProtocolViolation, e, "ReadDone6");
return;
}
}
data.stream = stream;
if (!expect_content)
stream.ForceCompletion ();
data.request.SetResponseData (data);
}
// Returns true if redirected
bool CheckFinalStatus (WebAsyncResult result)
{
if (result.GotException) {
bodyBuffer = null;
throw result.Exception;
}
Exception throwMe = result.Exception;
HttpWebResponse resp = result.Response;
WebExceptionStatus protoError = WebExceptionStatus.ProtocolError;
HttpStatusCode code = 0;
if (throwMe == null && webResponse != null) {
code = webResponse.StatusCode;
if (!authCompleted && ((code == HttpStatusCode.Unauthorized && credentials != null) ||
(ProxyQuery && code == HttpStatusCode.ProxyAuthenticationRequired))) {
if (!usedPreAuth && CheckAuthorization (webResponse, code)) {
// Keep the written body, so it can be rewritten in the retry
if (InternalAllowBuffering) {
// NTLM: This is to avoid sending data in the 'challenge' request
// We save it in the first request (first 401), don't send anything
// in the challenge request and send it in the response request along
// with the buffers kept form the first request.
if (ntlm_auth_state != NtlmAuthState.Response) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
return true;
} else if (method != "PUT" && method != "POST") {
bodyBuffer = null;
return true;
}
if (!ThrowOnError)
return false;
writeStream.InternalClose ();
writeStream = null;
webResponse.Close ();
webResponse = null;
bodyBuffer = null;
throw new WebException ("This request requires buffering " +
"of data for authentication or " +
"redirection to be sucessful.");
}
}
bodyBuffer = null;
if ((int) code >= 400) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
webResponse.ReadAll ();
} else if ((int) code == 304 && allowAutoRedirect) {
string err = String.Format ("The remote server returned an error: ({0}) {1}.",
(int) code, webResponse.StatusDescription);
throwMe = new WebException (err, null, protoError, webResponse);
} else if ((int) code >= 300 && allowAutoRedirect && redirects >= maxAutoRedirect) {
throwMe = new WebException ("Max. redirections exceeded.", null,
protoError, webResponse);
webResponse.ReadAll ();
}
}
bodyBuffer = null;
if (throwMe == null) {
bool b = false;
int c = (int) code;
if (allowAutoRedirect && c >= 300) {
if (InternalAllowBuffering && writeStream.WriteBufferLength > 0) {
bodyBuffer = writeStream.WriteBuffer;
bodyBufferLength = writeStream.WriteBufferLength;
}
b = Redirect (result, code);
if (b && ntlm_auth_state != 0)
ntlm_auth_state = 0;
}
if (resp != null && c >= 300 && c != 304)
resp.ReadAll ();
return b;
}
if (!ThrowOnError)
return false;
if (writeStream != null) {
writeStream.InternalClose ();
writeStream = null;
}
webResponse = null;
throw throwMe;
}
internal void SetResponseData (WebConnectionData data)
{
lock (locker) {
if (Aborted) {
if (data.stream != null)
data.stream.Close ();
return;
}
WebException wexc = null;
try {
webResponse = new HttpWebResponse (actualUri, method, data, cookieContainer);
} catch (Exception e) {
wexc = new WebException (e.Message, e, WebExceptionStatus.ProtocolError, null);
if (data.stream != null)
data.stream.Close ();
}
if (wexc == null && (method == "POST" || method == "PUT")) {
CheckSendError (data);
if (saved_exc != null)
wexc = (WebException) saved_exc;
}
WebAsyncResult r = asyncRead;
bool forced = false;
if (r == null && webResponse != null) {
// This is a forced completion (302, 204)...
forced = true;
r = new WebAsyncResult (null, null);
r.SetCompleted (false, webResponse);
}
if (r != null) {
if (wexc != null) {
haveResponse = true;
if (!r.IsCompleted)
r.SetCompleted (false, wexc);
r.DoCallback ();
return;
}
bool redirected;
try {
redirected = CheckFinalStatus (r);
if (!redirected) {
if (ntlm_auth_state != NtlmAuthState.None && authCompleted && webResponse != null
&& (int)webResponse.StatusCode < 400) {
WebConnectionStream wce = webResponse.GetResponseStream () as WebConnectionStream;
if (wce != null) {
WebConnection cnc = wce.Connection;
cnc.NtlmAuthenticated = true;
}
}
// clear internal buffer so that it does not
// hold possible big buffer (bug #397627)
if (writeStream != null)
writeStream.KillBuffer ();
haveResponse = true;
r.SetCompleted (false, webResponse);
r.DoCallback ();
} else {
if (webResponse != null) {
if (ntlm_auth_state != NtlmAuthState.None) {
HandleNtlmAuth (r);
return;
}
webResponse.Close ();
}
finished_reading = false;
haveResponse = false;
webResponse = null;
r.Reset ();
servicePoint = GetServicePoint ();
abortHandler = servicePoint.SendRequest (this, connectionGroup);
}
} catch (WebException wexc2) {
if (forced) {
saved_exc = wexc2;
haveResponse = true;
}
r.SetCompleted (false, wexc2);
r.DoCallback ();
return;
} catch (Exception ex) {
wexc = new WebException (ex.Message, ex, WebExceptionStatus.ProtocolError, null);
if (forced) {
saved_exc = wexc;
haveResponse = true;
}
r.SetCompleted (false, wexc);
r.DoCallback ();
return;
}
}
}
}
private static void ReadDone(IAsyncResult result)
{
WebConnection webConnection = (WebConnection)result.AsyncState;
WebConnectionData data = webConnection.Data;
Stream stream = webConnection.nstream;
if (stream == null)
{
webConnection.Close(sendNext: true);
return;
}
int num = -1;
try
{
num = stream.EndRead(result);
}
catch (Exception e)
{
webConnection.HandleError(WebExceptionStatus.ReceiveFailure, e, "ReadDone1");
return;
IL_004c :;
}
if (num == 0)
{
webConnection.HandleError(WebExceptionStatus.ReceiveFailure, null, "ReadDone2");
return;
}
if (num < 0)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, null, "ReadDone3");
return;
}
int num2 = -1;
num += webConnection.position;
if (webConnection.readState == ReadState.None)
{
Exception ex = null;
try
{
num2 = webConnection.GetResponse(webConnection.buffer, num);
}
catch (Exception ex2)
{
ex = ex2;
}
if (ex != null)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, ex, "ReadDone4");
return;
}
}
if (webConnection.readState != ReadState.Content)
{
int num3 = num * 2;
int num4 = (num3 >= webConnection.buffer.Length) ? num3 : webConnection.buffer.Length;
byte[] dst = new byte[num4];
Buffer.BlockCopy(webConnection.buffer, 0, dst, 0, num);
webConnection.buffer = dst;
webConnection.position = num;
webConnection.readState = ReadState.None;
InitRead(webConnection);
return;
}
webConnection.position = 0;
WebConnectionStream webConnectionStream = new WebConnectionStream(webConnection);
string text = data.Headers["Transfer-Encoding"];
webConnection.chunkedRead = (text != null && text.ToLower().IndexOf("chunked") != -1);
if (!webConnection.chunkedRead)
{
webConnectionStream.ReadBuffer = webConnection.buffer;
webConnectionStream.ReadBufferOffset = num2;
webConnectionStream.ReadBufferSize = num;
webConnectionStream.CheckResponseInBuffer();
}
else if (webConnection.chunkStream == null)
{
try
{
webConnection.chunkStream = new ChunkStream(webConnection.buffer, num2, num, data.Headers);
}
catch (Exception e2)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, e2, "ReadDone5");
return;
IL_01ef :;
}
}
else
{
webConnection.chunkStream.ResetBuffer();
try
{
webConnection.chunkStream.Write(webConnection.buffer, num2, num);
}
catch (Exception e3)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, e3, "ReadDone6");
return;
IL_0233 :;
}
}
data.stream = webConnectionStream;
if (!ExpectContent(data.StatusCode) || data.request.Method == "HEAD")
{
webConnectionStream.ForceCompletion();
}
data.request.SetResponseData(data);
}
internal void SetWriteStream (WebConnectionStream stream)
{
if (Aborted)
return;
writeStream = stream;
if (bodyBuffer != null) {
webHeaders.RemoveInternal ("Transfer-Encoding");
contentLength = bodyBufferLength;
writeStream.SendChunked = false;
}
writeStream.SetHeadersAsync (false, result => {
if (result.GotException) {
SetWriteStreamError (result.Exception);
return;
}
haveRequest = true;
SetWriteStreamInner (inner => {
if (inner.GotException) {
SetWriteStreamError (inner.Exception);
return;
}
if (asyncWrite != null) {
asyncWrite.SetCompleted (inner.CompletedSynchronously, writeStream);
asyncWrite.DoCallback ();
asyncWrite = null;
}
});
});
}
