internal HttpWebResponse(
Uri responseUri,
string verb,
CoreResponseData coreData,
string mediaType,
bool usesProxySemantics)
{
m_Uri = responseUri;
m_Verb = verb;
m_MediaType = mediaType;
m_UsesProxySemantics = usesProxySemantics;
m_ConnectStream = coreData.m_ConnectStream;
m_HttpResponseHeaders = coreData.m_ResponseHeaders;
m_ContentLength = coreData.m_ContentLength;
m_StatusCode = coreData.m_StatusCode;
m_StatusDescription = coreData.m_StatusDescription;
m_Version = coreData.m_Version;
// handle Content-Location header, by combining it with the orginal request.
string contentLocation = m_HttpResponseHeaders[HttpKnownHeaderNames.ContentLocation];
if (contentLocation != null)
{
try {
m_Uri = new Uri(m_Uri, contentLocation);
} catch (Exception e) {
GlobalLog.Assert(false, "Exception on Uri parsing", e.ToString());
}
}
}
internal Connection(System.Net.ConnectionGroup connectionGroup) : base(null)
{
this.m_IISVersion = -1;
this.m_Free = true;
this.m_Idle = true;
this.m_KeepAlive = true;
this.m_MaximumUnauthorizedUploadLength = SettingsSectionInternal.Section.MaximumUnauthorizedUploadLength;
if (this.m_MaximumUnauthorizedUploadLength > 0L)
{
this.m_MaximumUnauthorizedUploadLength *= 0x400L;
}
this.m_ResponseData = new CoreResponseData();
this.m_ConnectionGroup = connectionGroup;
this.m_ReadBuffer = new byte[0x1000];
this.m_ReadState = ReadState.Start;
this.m_WaitList = new List<WaitListItem>();
this.m_WriteList = new ArrayList();
this.m_AbortDelegate = new HttpAbortDelegate(this.AbortOrDisassociate);
this.m_ConnectionUnlock = new UnlockConnectionDelegate(this.UnlockRequest);
this.m_StatusLineValues = new StatusLineValues();
this.m_RecycleTimer = this.ConnectionGroup.ServicePoint.ConnectionLeaseTimerQueue.CreateTimer();
this.ConnectionGroup.Associate(this);
this.m_ReadDone = true;
this.m_WriteDone = true;
this.m_Error = WebExceptionStatus.Success;
}
internal HttpWebResponse(Uri responseUri, KnownHttpVerb verb, CoreResponseData coreData, string mediaType, bool usesProxySemantics, DecompressionMethods decompressionMethod) {
m_Uri = responseUri;
m_Verb = verb;
m_MediaType = mediaType;
m_UsesProxySemantics = usesProxySemantics;
m_ConnectStream = coreData.m_ConnectStream;
m_HttpResponseHeaders = coreData.m_ResponseHeaders;
m_ContentLength = coreData.m_ContentLength;
m_StatusCode = coreData.m_StatusCode;
m_StatusDescription = coreData.m_StatusDescription;
m_IsVersionHttp11 = coreData.m_IsVersionHttp11;
//if the returned contentlength is zero, preemptively invoke calldone on the stream.
//this will wake up any pending reads.
if (m_ContentLength == 0 && m_ConnectStream is ConnectStream) {
((ConnectStream)m_ConnectStream).CallDone();
}
// handle Content-Location header, by combining it with the orginal request.
string contentLocation = m_HttpResponseHeaders[HttpKnownHeaderNames.ContentLocation];
if (contentLocation != null) {
try {
m_Uri = new Uri(m_Uri, contentLocation);
} catch (UriFormatException e) {
GlobalLog.Assert("Exception on response Uri parsing.", e.ToString());
}
}
// decompress responses by hooking up a final response Stream - only if user required it
if(decompressionMethod != DecompressionMethods.None) {
string contentEncoding = m_HttpResponseHeaders[HttpKnownHeaderNames.ContentEncoding];
if (contentEncoding != null){
if(((decompressionMethod & DecompressionMethods.GZip) != 0) && contentEncoding.IndexOf(HttpWebRequest.GZipHeader) != -1) {
m_ConnectStream = new GZipWrapperStream(m_ConnectStream, CompressionMode.Decompress);
m_ContentLength = -1; // unknown on compressed streams
// Setting a response header after parsing will ruin the Common Header optimization.
// This seems like a corner case. ContentEncoding could be added as a common header, with a special
// property allowing it to be nulled.
m_HttpResponseHeaders[HttpKnownHeaderNames.ContentEncoding] = null;
}
else if (((decompressionMethod & DecompressionMethods.Deflate) != 0) && contentEncoding.IndexOf(HttpWebRequest.DeflateHeader) != -1) {
m_ConnectStream = new DeflateWrapperStream(m_ConnectStream, CompressionMode.Decompress);
m_ContentLength = -1; // unknown on compressed streams
// Setting a response header after parsing will ruin the Common Header optimization.
// This seems like a corner case. ContentEncoding could be added as a common header, with a special
// property allowing it to be nulled.
m_HttpResponseHeaders[HttpKnownHeaderNames.ContentEncoding] = null;
}
}
}
}
internal HttpWebResponse(Uri responseUri, KnownHttpVerb verb, CoreResponseData coreData, string mediaType, bool usesProxySemantics, DecompressionMethods decompressionMethod)
{
m_Uri = responseUri;
m_Verb = verb;
m_MediaType = mediaType;
m_UsesProxySemantics = usesProxySemantics;
m_ConnectStream = coreData.m_ConnectStream;
m_HttpResponseHeaders = coreData.m_ResponseHeaders;
m_ContentLength = coreData.m_ContentLength;
m_StatusCode = coreData.m_StatusCode;
m_StatusDescription = coreData.m_StatusDescription;
m_IsVersionHttp11 = coreData.m_IsVersionHttp11;
//if the returned contentlength is zero, preemptively invoke calldone on the stream.
//this will wake up any pending reads.
if (m_ContentLength == 0 && m_ConnectStream is ConnectStream) {
((ConnectStream)m_ConnectStream).CallDone();
}
// handle Content-Location header, by combining it with the orginal request.
string contentLocation = m_HttpResponseHeaders[HttpKnownHeaderNames.ContentLocation];
if (contentLocation != null) {
try {
m_Uri = new Uri(m_Uri, contentLocation);
} catch (UriFormatException e) {
GlobalLog.Assert("Exception on response Uri parsing.", e.ToString());
}
}
// decompress responses by hooking up a final response Stream - only if user required it
if(decompressionMethod != DecompressionMethods.None) {
string contentEncoding = m_HttpResponseHeaders[HttpKnownHeaderNames.ContentEncoding];
if (contentEncoding != null){
if(((decompressionMethod & DecompressionMethods.GZip) != 0) && contentEncoding.IndexOf(HttpWebRequest.GZipHeader) != -1) {
m_ConnectStream = new GZipWrapperStream(m_ConnectStream, CompressionMode.Decompress);
m_ContentLength = -1; // unknown on compressed streams
// Setting a response header after parsing will ruin the Common Header optimization.
// This seems like a corner case. ContentEncoding could be added as a common header, with a special
// property allowing it to be nulled.
m_HttpResponseHeaders[HttpKnownHeaderNames.ContentEncoding] = null;
}
else if (((decompressionMethod & DecompressionMethods.Deflate) != 0) && contentEncoding.IndexOf(HttpWebRequest.DeflateHeader) != -1) {
m_ConnectStream = new DeflateWrapperStream(m_ConnectStream, CompressionMode.Decompress);
m_ContentLength = -1; // unknown on compressed streams
// Setting a response header after parsing will ruin the Common Header optimization.
// This seems like a corner case. ContentEncoding could be added as a common header, with a special
// property allowing it to be nulled.
m_HttpResponseHeaders[HttpKnownHeaderNames.ContentEncoding] = null;
}
}
}
}
internal CoreResponseData Clone()
{
CoreResponseData cloneResponseData = new CoreResponseData();
cloneResponseData.m_StatusCode = m_StatusCode;
cloneResponseData.m_StatusDescription = m_StatusDescription;
cloneResponseData.m_IsVersionHttp11 = m_IsVersionHttp11;
cloneResponseData.m_ContentLength = m_ContentLength;
cloneResponseData.m_ResponseHeaders = m_ResponseHeaders;
cloneResponseData.m_ConnectStream = m_ConnectStream;
return(cloneResponseData);
}
internal static void Add(ref ConnectionReturnResult returnResult, HttpWebRequest request, CoreResponseData coreResponseData)
{
if (coreResponseData == null)
{
throw new InternalException();
}
if (returnResult == null)
{
returnResult = new ConnectionReturnResult();
}
returnResult.m_Context.Add(new RequestContext(request, coreResponseData));
}
/// <summary>
/// Creates WEB response based on information known just after parsing the status line.
/// </summary>
/// <param name="method">Http Verb</param>
/// <param name="responseUrl">TBD</param>
/// <param name="data">Response data</param>
/// <param name="httpWebReq">TBD</param>
internal HttpWebResponse(string method, Uri responseUrl,
CoreResponseData data, HttpWebRequest httpWebReq)
{
m_httpWebRequest = httpWebReq;
m_method = method;
m_url = responseUrl;
m_version = data.m_version;
m_statusCode = data.m_statusCode;
m_statusDescription = data.m_statusDescription;
m_httpResponseHeaders = data.m_headers;
m_contentLength = data.m_contentLength;
}
internal HttpWebResponse(Uri responseUri, KnownHttpVerb verb, CoreResponseData coreData, string mediaType, bool usesProxySemantics, DecompressionMethods decompressionMethod)
{
this.m_Uri = responseUri;
this.m_Verb = verb;
this.m_MediaType = mediaType;
this.m_UsesProxySemantics = usesProxySemantics;
this.m_ConnectStream = coreData.m_ConnectStream;
this.m_HttpResponseHeaders = coreData.m_ResponseHeaders;
this.m_ContentLength = coreData.m_ContentLength;
this.m_StatusCode = coreData.m_StatusCode;
this.m_StatusDescription = coreData.m_StatusDescription;
this.m_IsVersionHttp11 = coreData.m_IsVersionHttp11;
if ((this.m_ContentLength == 0L) && (this.m_ConnectStream is ConnectStream))
{
((ConnectStream)this.m_ConnectStream).CallDone();
}
string relativeUri = this.m_HttpResponseHeaders["Content-Location"];
if (relativeUri != null)
{
try
{
this.m_Uri = new Uri(this.m_Uri, relativeUri);
}
catch (UriFormatException)
{
}
}
if (decompressionMethod != DecompressionMethods.None)
{
string str2 = this.m_HttpResponseHeaders["Content-Encoding"];
if (str2 != null)
{
if (((decompressionMethod & DecompressionMethods.GZip) != DecompressionMethods.None) && (str2.IndexOf("gzip") != -1))
{
this.m_ConnectStream = new GZipWrapperStream(this.m_ConnectStream, CompressionMode.Decompress);
this.m_ContentLength = -1L;
this.m_HttpResponseHeaders["Content-Encoding"] = null;
}
else if (((decompressionMethod & DecompressionMethods.Deflate) != DecompressionMethods.None) && (str2.IndexOf("deflate") != -1))
{
this.m_ConnectStream = new DeflateWrapperStream(this.m_ConnectStream, CompressionMode.Decompress);
this.m_ContentLength = -1L;
this.m_HttpResponseHeaders["Content-Encoding"] = null;
}
}
}
}
internal HttpWebResponse(Uri responseUri, KnownHttpVerb verb, CoreResponseData coreData, string mediaType, bool usesProxySemantics, DecompressionMethods decompressionMethod)
{
this.m_Uri = responseUri;
this.m_Verb = verb;
this.m_MediaType = mediaType;
this.m_UsesProxySemantics = usesProxySemantics;
this.m_ConnectStream = coreData.m_ConnectStream;
this.m_HttpResponseHeaders = coreData.m_ResponseHeaders;
this.m_ContentLength = coreData.m_ContentLength;
this.m_StatusCode = coreData.m_StatusCode;
this.m_StatusDescription = coreData.m_StatusDescription;
this.m_IsVersionHttp11 = coreData.m_IsVersionHttp11;
if ((this.m_ContentLength == 0L) && (this.m_ConnectStream is ConnectStream))
{
((ConnectStream) this.m_ConnectStream).CallDone();
}
string relativeUri = this.m_HttpResponseHeaders["Content-Location"];
if (relativeUri != null)
{
try
{
this.m_Uri = new Uri(this.m_Uri, relativeUri);
}
catch (UriFormatException)
{
}
}
if (decompressionMethod != DecompressionMethods.None)
{
string str2 = this.m_HttpResponseHeaders["Content-Encoding"];
if (str2 != null)
{
if (((decompressionMethod & DecompressionMethods.GZip) != DecompressionMethods.None) && (str2.IndexOf("gzip") != -1))
{
this.m_ConnectStream = new GZipWrapperStream(this.m_ConnectStream, CompressionMode.Decompress);
this.m_ContentLength = -1L;
this.m_HttpResponseHeaders["Content-Encoding"] = null;
}
else if (((decompressionMethod & DecompressionMethods.Deflate) != DecompressionMethods.None) && (str2.IndexOf("deflate") != -1))
{
this.m_ConnectStream = new DeflateWrapperStream(this.m_ConnectStream, CompressionMode.Decompress);
this.m_ContentLength = -1L;
this.m_HttpResponseHeaders["Content-Encoding"] = null;
}
}
}
}
/// <summary>
/// Reads and parses HTTP response from server.
/// After return of function HTTP response is read.
/// </summary>
/// <param name="inStream">Network stream connected to server.</param>
/// <param name="defaultKeepAlive">TBD</param>
/// <returns>CoreResponseData that describes server response.</returns>
private CoreResponseData ParseHTTPResponse(InputNetworkStreamWrapper inStream, bool defaultKeepAlive)
{
// CoreResponseData keeps all the information of the response.
CoreResponseData ret = new CoreResponseData();
// maximumHeadersLength is maximum total length of http header. Basically this is amount
// of memory used for headers.
int headersLength = m_maxResponseHeadersLen == -1 ? 0x7FFFFFFF : m_maxResponseHeadersLen * 1024;
ret.m_shouldClose = !defaultKeepAlive;
// Parse the request line.
string line = inStream.Read_HTTP_Line(maxHTTPLineLength).Trim();
// Cutoff white spaces
int currentOffset = 0;
for (; currentOffset < line.Length && ' ' != line[currentOffset]; ++currentOffset) ;
// find HTTP version, read http/1.x
string httpVersionString = line.Substring(0, currentOffset).ToLower();
if (httpVersionString.Equals("http/1.1"))
{
ret.m_version = HttpVersion.Version11;
}
else if (httpVersionString.Equals("http/1.0"))
{
ret.m_version = HttpVersion.Version10;
}
else
{
ret.m_status = WebExceptionStatus.ServerProtocolViolation;
ret.m_exceptionMessage = "Unknown http version: " + httpVersionString;
return ret;
}
//advance to the status code
for (; currentOffset < line.Length && ' ' == line[currentOffset]; ++currentOffset) ;
// Read the status code
int codeStart = currentOffset;
for (; currentOffset < line.Length && ' ' != line[currentOffset]; ++currentOffset) ;
int statusCode = -1;
try
{
string statusCodeStr =
line.Substring(codeStart,
currentOffset - codeStart);
statusCode = Convert.ToInt32(statusCodeStr);
}
catch (Exception e)
{
ret.m_status = WebExceptionStatus.ServerProtocolViolation;
ret.m_exceptionMessage = "Missing status code in HTTP reply";
ret.m_innerException = e;
return ret;
}
// If we get here - status code should be read.
ret.m_statusCode = statusCode;
// Advance to the status message. The message is optional
for (; currentOffset < line.Length && ' ' != line[currentOffset]; ++currentOffset) ;
ret.m_statusDescription = line.Substring(currentOffset);
ret.m_headers = new WebHeaderCollection(true);
ret.m_chunked = false;
ret.m_contentLength = -1;
while ((line = inStream.Read_HTTP_Header(maxHTTPLineLength)).Length > 0)
{
// line.Length is used for the header. Substruct it.
headersLength -= line.Length;
// If total length used for header is exceeded, we break
if (headersLength < 0)
{
ret.m_status = WebExceptionStatus.ServerProtocolViolation;
ret.m_exceptionMessage = "Headers size exceed limit";
return ret;
}
// Now parse the header.
int sepIdx = line.IndexOf(':');
if (sepIdx == -1)
{
ret.m_status = WebExceptionStatus.ServerProtocolViolation;
ret.m_exceptionMessage = "Illegal header format: " + line;
return ret;
}
string headerName = line.Substring(0, sepIdx);
string headerValue = line.Substring(sepIdx + 1).TrimStart(null);
string matchableHeaderName = headerName.ToLower();
ret.m_headers.AddInternal(headerName, headerValue);
if (matchableHeaderName.Equals("content-length"))
{
try
{
ret.m_contentLength = Convert.ToInt32(headerValue);
// set the response stream length for the input stream, so that an EOF will be read
// if the caller tries to read base the response content length
inStream.m_BytesLeftInResponse = ret.m_contentLength;
}
catch (Exception e)
{
ret.m_status =
WebExceptionStatus.ServerProtocolViolation;
ret.m_exceptionMessage = "Content length NAN: " + headerValue;
ret.m_innerException = e;
return ret;
}
}
else if (matchableHeaderName.Equals("transfer-encoding"))
{
if (headerValue.ToLower().IndexOf("chunked") != -1)
{
ret.m_chunked = true;
}
}
else if (matchableHeaderName.Equals("connection"))
{
if (headerValue.ToLower().IndexOf(HttpKnownHeaderValues.close) != -1)
{
ret.m_shouldClose = true;
}
}
}
return ret;
}
internal static void Add(ref ConnectionReturnResult returnResult, HttpWebRequest request, CoreResponseData coreResponseData)
{
if (coreResponseData == null)
{
throw new InternalException();
}
if (returnResult == null)
{
returnResult = new ConnectionReturnResult();
}
returnResult.m_Context.Add(new RequestContext(request, coreResponseData));
}
internal static void Add(ref ConnectionReturnResult returnResult, HttpWebRequest request, CoreResponseData coreResponseData) {
if (returnResult == null) {
returnResult = new ConnectionReturnResult();
}
request.CoreResponse = coreResponseData;
returnResult.m_RequestList.Add(request);
}
//
// This method has to be invoked as part of the wire response processing.
// The wire response can be replaced on return
//
// ATTN: If the method returns false, the response is invalid and should be retried
//
private bool CheckCacheRetrieveOnResponse() {
GlobalLog.ThreadContract(ThreadKinds.Unknown, "HttpWebRequest#" + ValidationHelper.HashString(this) + "::CheckCacheRetrieveOnResponse");
if (CacheProtocol == null) {
return true;
}
if (CacheProtocol.ProtocolStatus == CacheValidationStatus.Fail) {
throw CacheProtocol.ProtocolException;
}
Stream oldResponseStream = _HttpResponse.ResponseStream;
CacheProtocol.GetRevalidateStatus(_HttpResponse, _HttpResponse.ResponseStream);
if (CacheProtocol.ProtocolStatus == CacheValidationStatus.RetryResponseFromServer)
{
// Try to resubmit or fail
return false;
}
if (CacheProtocol.ProtocolStatus != CacheValidationStatus.ReturnCachedResponse &&
CacheProtocol.ProtocolStatus != CacheValidationStatus.CombineCachedAndServerResponse)
{
// Take current response
return true;
}
if (HttpWriteMode!=HttpWriteMode.None) {
// This should never happen in real life
throw new NotSupportedException(SR.GetString(SR.net_cache_not_supported_body));
}
CoreResponseData responseData = new CoreResponseData();
HttpRequestCacheValidator ctx = (HttpRequestCacheValidator) CacheProtocol.Validator;
// If we take it from cache, we have to replace the live response if any
responseData.m_IsVersionHttp11 = ctx.CacheHttpVersion.Equals(HttpVersion.Version11);
responseData.m_StatusCode = ctx.CacheStatusCode;
responseData.m_StatusDescription= ctx.CacheStatusDescription;
responseData.m_ResponseHeaders = CacheProtocol.ProtocolStatus == CacheValidationStatus.CombineCachedAndServerResponse
? new WebHeaderCollection(ctx.CacheHeaders)
: ctx.CacheHeaders;
responseData.m_ContentLength = CacheProtocol.ResponseStreamLength;
responseData.m_ConnectStream = CacheProtocol.ResponseStream;
_HttpResponse = new HttpWebResponse(GetRemoteResourceUri(), CurrentMethod, responseData,
_MediaType, UsesProxySemantics, AutomaticDecompression, IsWebSocketRequest, ConnectionGroupName);
if (CacheProtocol.ProtocolStatus == CacheValidationStatus.ReturnCachedResponse)
{
_HttpResponse.InternalSetFromCache = true;
_HttpResponse.InternalSetIsCacheFresh = CacheProtocol.IsCacheFresh;
// can only dispose the response stream when not combining the streams
// Note the response itself may still be needed for cache update call.
if (oldResponseStream != null)
{
try {
oldResponseStream.Close();
}
catch {
}
}
}
return true;
}
//
// This method may be invoked as part of the request submission but
// before the response is received
// Return:
// - True = response is ready
// - False = Proceed with the request submission
private bool CheckCacheRetrieveBeforeSubmit() {
GlobalLog.ThreadContract(ThreadKinds.Unknown, "HttpWebRequest#" + ValidationHelper.HashString(this) + "::CheckCacheRetrieveBeforeSubmit");
if (CacheProtocol == null) {
return false;
}
try
{
Uri cacheUri = GetRemoteResourceUri();
if (cacheUri.Fragment.Length != 0)
cacheUri = new Uri(cacheUri.GetParts(UriComponents.AbsoluteUri & ~UriComponents.Fragment, UriFormat.SafeUnescaped));
CacheProtocol.GetRetrieveStatus(cacheUri, this);
if (CacheProtocol.ProtocolStatus == CacheValidationStatus.Fail) {
throw CacheProtocol.ProtocolException;
}
if (CacheProtocol.ProtocolStatus != CacheValidationStatus.ReturnCachedResponse) {
return false;
}
if (HttpWriteMode!=HttpWriteMode.None) {
throw new NotSupportedException(SR.GetString(SR.net_cache_not_supported_body));
}
// If we take it from cache, we have to kick in response processing
// The _CacheStream is good to return as the response stream.
HttpRequestCacheValidator ctx = (HttpRequestCacheValidator) CacheProtocol.Validator;
CoreResponseData responseData = new CoreResponseData();
responseData.m_IsVersionHttp11 = ctx.CacheHttpVersion.Equals(HttpVersion.Version11);
responseData.m_StatusCode = ctx.CacheStatusCode;
responseData.m_StatusDescription= ctx.CacheStatusDescription;
responseData.m_ResponseHeaders = ctx.CacheHeaders;
responseData.m_ContentLength = CacheProtocol.ResponseStreamLength;
responseData.m_ConnectStream = CacheProtocol.ResponseStream;
_HttpResponse = new HttpWebResponse(GetRemoteResourceUri(), CurrentMethod, responseData,
_MediaType, UsesProxySemantics, AutomaticDecompression, IsWebSocketRequest, ConnectionGroupName);
_HttpResponse.InternalSetFromCache = true;
_HttpResponse.InternalSetIsCacheFresh = (ctx.CacheFreshnessStatus != CacheFreshnessStatus.Stale);
ProcessResponse();
return true;
}
catch (Exception exception)
{
Abort(exception, AbortState.Public);
throw;
}
}
internal static void SetResponse(ConnectionReturnResult returnResult, HttpWebRequest request, CoreResponseData coreResponseData) {
try {
request.SetResponse(coreResponseData);
}
catch {
if (returnResult != null && returnResult.m_RequestList.Count>0) {
ThreadPool.QueueUserWorkItem(s_InvokeConnectionCallback, returnResult);
}
throw;
}
if (returnResult!= null) {
ConnectionReturnResult.SetResponses(returnResult);
}
}
internal Connection(ConnectionGroup connectionGroup) : base(null) {
//
// add this Connection to the pool in the connection group,
// keep a weak reference to it
//
m_MaximumUnauthorizedUploadLength = SettingsSectionInternal.Section.MaximumUnauthorizedUploadLength;
if(m_MaximumUnauthorizedUploadLength > 0){
m_MaximumUnauthorizedUploadLength*=1024;
}
m_ResponseData = new CoreResponseData();
m_ConnectionGroup = connectionGroup;
m_ReadBuffer = new byte[4096]; // Using a fixed 4k read buffer.
m_ReadState = ReadState.Start;
m_WaitList = new List<WaitListItem>();
m_WriteList = new ArrayList();
m_AbortDelegate = new HttpAbortDelegate(AbortOrDisassociate);
m_ConnectionUnlock = new UnlockConnectionDelegate(UnlockRequest);
// for status line parsing
m_StatusLineValues = new StatusLineValues();
m_RecycleTimer = ConnectionGroup.ServicePoint.ConnectionLeaseTimerQueue.CreateTimer();
// the following line must be the last line of the constructor
ConnectionGroup.Associate(this);
m_ReadDone = true;
m_WriteDone = true;
m_Error = WebExceptionStatus.Success;
}
/*++
ParseResponseData - Parses the incomming headers, and handles
creation of new streams that are found while parsing, and passes
extra data the new streams
Input:
returnResult - returns an object containing items that need to be called
at the end of the read callback
Returns:
bool - true if one should continue reading more data
--*/
private DataParseStatus ParseResponseData(ref ConnectionReturnResult returnResult) {
DataParseStatus parseStatus = DataParseStatus.NeedMoreData;
DataParseStatus parseSubStatus;
GlobalLog.Enter("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData()");
// loop in case of multiple sets of headers or streams,
// that may be generated due to a pipelined response
do {
// Invariants: at the start of this loop, m_BytesRead
// is the number of bytes in the buffer, and m_BytesScanned
// is how many bytes of the buffer we've consumed so far.
// and the m_ReadState var will be updated at end of
// each code path, call to this function to reflect,
// the state, or error condition of the parsing of data
//
// We use the following variables in the code below:
//
// m_ReadState - tracks the current state of our Parsing in a
// response. z.B.
// Start - initial start state and begining of response
// StatusLine - the first line sent in response, include status code
// Headers - \r\n delimiated Header parsing until we find entity body
// Data - Entity Body parsing, if we have all data, we create stream directly
//
// m_ResponseData - An object used to gather Stream, Headers, and other
// tidbits so that a Request/Response can receive this data when
// this code is finished processing
//
// m_ReadBuffer - Of course the buffer of data we are parsing from
//
// m_CurrentRequestIndex - index into the window of a buffer where
// we are currently parsing. Since there can be multiple requests
// this index is used to the track the offset, based off of 0
//
// m_BytesScanned - The bytes scanned in this buffer so far,
// since its always assumed that parse to completion, this
// var becomes ended of known data at the end of this function,
// based off of 0
//
// m_BytesRead - The total bytes read in buffer, should be const,
// till its updated at end of function.
//
// m_HeadersBytesUnparsed - The bytes scanned in the headers,
// needs to be seperate because headers are not always completely
// parsed to completion on each interation
//
//
// Now attempt to parse the data,
// we first parse status line,
// then read headers,
// and finally transfer results to a new stream, and tell request
//
switch (m_ReadState) {
case ReadState.Start:
m_ResponseData = new CoreResponseData();
m_ReadState = ReadState.StatusLine;
m_CurrentRequestIndex = m_BytesScanned;
InitializeParseStatueLine();
goto case ReadState.StatusLine;
case ReadState.StatusLine:
//
// Reads HTTP status response line
//
parseSubStatus =
ParseStatusLine(
m_ReadBuffer, // buffer we're working with
m_BytesRead, // total bytes read so far
ref m_BytesScanned, // index off of what we've scanned
ref m_StatusLineInts,
ref m_StatusDescription,
ref m_StatusState );
if (parseSubStatus == DataParseStatus.Invalid) {
//
// report error
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseStatusLine() ParseHeaders() returned Invalid protocol usage");
parseStatus = DataParseStatus.Invalid;
// advance back to state 0, in failure
m_ReadState = ReadState.Start;
break;
}
else if (parseSubStatus == DataParseStatus.Done) {
SetStatusLineParsed();
m_ReadState = ReadState.Headers;
m_HeadersBytesUnparsed = m_BytesScanned;
m_ResponseData.m_ResponseHeaders = new WebHeaderCollection(true);
goto case ReadState.Headers;
}
break; // read more data
case ReadState.Headers:
//
// Parse additional lines of header-name: value pairs
//
if (m_HeadersBytesUnparsed>=m_BytesRead) {
//
// we already can tell we need more data
//
break;
}
parseSubStatus =
m_ResponseData.m_ResponseHeaders.ParseHeaders(
m_ReadBuffer,
m_BytesRead,
ref m_HeadersBytesUnparsed );
if (parseSubStatus == DataParseStatus.Invalid) {
//
// report error
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() ParseHeaders() returned Invalid protocol usage");
parseStatus = DataParseStatus.Invalid;
// advance back to state 0, in failure
m_ReadState = ReadState.Start;
break;
}
else if (parseSubStatus == DataParseStatus.Done) {
m_BytesScanned = m_HeadersBytesUnparsed; // update actual size of scanned headers
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() got (" + ((int)m_ResponseData.m_StatusCode).ToString() + ") from the server");
// If we have an HTTP continue, eat these headers and look
// for the 200 OK
if (m_ResponseData.m_StatusCode == HttpStatusCode.Continue) {
HttpWebRequest Request;
// wakeup post code if needed
lock(this) {
GlobalLog.Assert(
m_WriteList.Count > 0,
"Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData(): m_WriteList.Count <= 0",
"");
if ( m_WriteList.Count == 0 ) {
parseStatus = DataParseStatus.Invalid;
// advance back to state 0, in failure
m_ReadState = ReadState.Start;
break;
}
Request = (HttpWebRequest)m_WriteList[0];
}
GlobalLog.Assert(
Request != null,
"Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData(): Request == null",
"");
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() HttpWebRequest#" + ValidationHelper.HashString(Request));
//
// we got a 100 Continue. set this on the HttpWebRequest
//
Request.Saw100Continue = true;
if (!m_Server.Understands100Continue) {
//
// and start expecting it again if this behaviour was turned off
//
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(Request) + " ServicePoint#" + ValidationHelper.HashString(m_Server) + " sent UNexpected 100 Continue");
m_Server.Understands100Continue = true;
}
//
// set Continue Ack on Request.
//
if (Request.ContinueDelegate != null) {
//
// invoke the 100 continue delegate if the user supplied one
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() calling ContinueDelegate()");
Request.ContinueDelegate((int)m_ResponseData.m_StatusCode, m_ResponseData.m_ResponseHeaders);
}
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() calling SetRequestContinue()");
Request.SetRequestContinue();
m_ReadState = ReadState.Start;
goto case ReadState.Start;
}
m_ReadState = ReadState.Data;
goto case ReadState.Data;
}
// need more data,
//
// But unfornately ParseHeaders does not work,
// the same way as all other code in this function,
// since its old code, it assumes BytesScanned bytes will be always
// around between calls until it has all the data, but that is NOT
// true, since we can do block copy between calls.
//
// To handle this we fix up the offsets.
// We assume we scanned all the way to the end of valid buffer data
m_BytesScanned = m_BytesRead;
break;
case ReadState.Data:
// (check status code for continue handling)
// 1. Figure out if its Chunked, content-length, or encoded
// 2. Takes extra data, place in stream(s)
// 3. Wake up blocked stream requests
//
// advance back to state 0
m_ReadState = ReadState.Start;
// parse and create a stream if needed
DataParseStatus result = ParseStreamData(ref returnResult);
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() result - " + result.ToString());
switch (result) {
case DataParseStatus.NeedMoreData:
//
// cont reading. Only way we can get here is if the request consumed
// all the bytes in the buffer. So reset everything.
//
m_BytesRead = 0;
m_BytesScanned = 0;
m_CurrentRequestIndex = 0;
parseStatus = DataParseStatus.NeedMoreData;
break;
case DataParseStatus.ContinueParsing:
continue;
case DataParseStatus.Invalid:
case DataParseStatus.Done:
//
// NOTE: WARNING: READ THIS:
// Upon update of this code, keep in mind,
// that when DataParseStatus.Done is returned
// from ParseStreamData, it can mean that ReadStartNextRequest()
// has been called. That means that we should no longer
// change ALL this.m_* vars, since those variables, can now
// be used on other threads.
//
// DataParseStatus.Done will cause an error below
parseStatus = result;
break;
}
break;
}
break;
} while (true);
GlobalLog.Print("m_ReadState - " + m_ReadState.ToString());
GlobalLog.Leave("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData()", parseStatus.ToString());
return parseStatus;
}
internal CoreResponseData Clone() {
CoreResponseData cloneResponseData = new CoreResponseData();
cloneResponseData.m_StatusCode = m_StatusCode;
cloneResponseData.m_StatusDescription = m_StatusDescription;
cloneResponseData.m_IsVersionHttp11 = m_IsVersionHttp11;
cloneResponseData.m_ContentLength = m_ContentLength;
cloneResponseData.m_ResponseHeaders = m_ResponseHeaders;
cloneResponseData.m_ConnectStream = m_ConnectStream;
return cloneResponseData;
}
/*++
HandleError - Handle a protocol error from the server.
This method is called when we've detected some sort of fatal protocol
violation while parsing a response, receiving data from the server,
or failing to connect to the server. We'll fabricate
a WebException and then call CloseConnection which closes the
connection as well as informs the Request through a callback.
Input:
webExceptionStatus -
connectFailure -
readFailure -
Returns: Nothing
--*/
private void HandleError(WebExceptionStatus webExceptionStatus, ConnectionFailureGroup failureGroup, ref ConnectionReturnResult returnResult) {
Monitor.Enter(this);
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::HandleError() writeListcount: " + m_WriteList.Count.ToString() + " m_WriteDone:" + m_WriteDone.ToString() + " failureGroup:" + failureGroup.ToString());
if (failureGroup != ConnectionFailureGroup.Receive) {
if ((m_WriteList.Count!=0) && (failureGroup != ConnectionFailureGroup.Connect)) {
HttpWebRequest Request = (HttpWebRequest)m_WriteList[0];
Request.OnceFailed = true;
GlobalLog.Print("Request = " + ValidationHelper.HashString(Request));
}
else {
// if there are no WriteList requests, then we can
// assume that WriteDone is true, this is usually
// caused by servers send illegal data (e.g. bad contentlengths),
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::HandleError() setting m_WriteDone:" + m_WriteDone.ToString() + " to true");
m_WriteDone = true;
}
}
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::HandleError() m_WriteDone:" + m_WriteDone.ToString());
m_ResponseData = null;
//m_ReadState = ReadState.Start;
m_ReadDone = true;
//Tunnelling = false;
m_Error = webExceptionStatus;
// It's possible that we could have a write in progress, and we
// don't want to close the connection underneath him. Since thisConnection
// is a completion of our read buffer, it's safe for us to
// set thisConnection.m_ReadDone to true. So if there's not a write in
// progress, close the connection. If there a write in progress,
// wait for the write to complete before closing the socket.
if (m_WriteDone) {
CloseConnectionSocket(m_Error, ref returnResult);
}
else {
Monitor.Exit(this);
}
}
/*++
Routine Description:
Wakes up blocked threads, so they can read response object,
from the result
We also handle the continuation/termination of a BeginGetResponse,
by saving out the result and calling its callback if needed.
Arguments:
coreData - Contains the data used to create the Response object
exception - true if we're allowed to throw an exception on error
Return Value:
none
--*/
internal void SetResponse(CoreResponseData coreResponseData) {
GlobalLog.Enter("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse", "*** SETRESP ***");
//
// Since we are no longer attached to this Connection,
// we null out our abort delegate.
//
_AbortDelegate = null;
try {
if (coreResponseData != null) {
_HttpResponse = new HttpWebResponse(_Uri, _Verb, coreResponseData, _MediaType, UsesProxySemantics);
coreResponseData = null;
}
else {
//
// not sure how this would happen, but we should not throw an exception,
// which we were earlier doing.
//
GlobalLog.Assert(false,
"coreResponseData == null",
"");
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse", "ASSERT");
return;
}
//
// give apps the chance to examine the headers of the new response
//
if (_CookieContainer != null) {
CookieModule.OnReceivedHeaders(this);
}
// New Response
HttpProcessingResult httpResult = HttpProcessingResult.Continue;
// handle redirects, authentication, and such
httpResult = DoSubmitRequestProcessing();
if (httpResult == HttpProcessingResult.Continue) {
//
// Now grab crit sec here, before returning,
// this is to prevent some one from reading
// ReadAResult it as null before we finish
// processing our response
//
LazyAsyncResult asyncResult = null;
lock(this)
{
asyncResult = _ReadAResult;
GlobalLog.Assert(asyncResult == null || this == (HttpWebRequest)asyncResult.AsyncObject,
"SetResponse: this != asyncResult.AsyncObject",
"");
GlobalLog.Assert(asyncResult == null || !asyncResult.IsCompleted, "SetResponse: asyncResult already completed!", "");
_HaveResponse = true;
if (asyncResult != null) {
_ReadAResult = null;
}
}
if (asyncResult != null) {
asyncResult.InvokeCallback(false, _HttpResponse);
}
if ( _WriteEvent != null ) {
GlobalLog.Print("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse(CoreResponseData) calling _WriteEvent.Set()");
_WriteEvent.Set();
}
}
} catch (Exception exception) {
Abort();
GlobalLog.LeaveException("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse", exception);
throw;
}
if (_Abort) {
try {
if ( _HttpResponse != null ) {
_HttpResponse.Close();
}
}
catch {
}
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse", "ABORT");
return;
}
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse");
}
/// <summary>
/// Creates WEB response based on information known just after parsing the status line.
/// </summary>
/// <param name="method">Http Verb</param>
/// <param name="responseUrl">TBD</param>
/// <param name="data">Response data</param>
/// <param name="httpWebReq">TBD</param>
internal HttpWebResponse(string method, Uri responseUrl,
CoreResponseData data, HttpWebRequest httpWebReq)
{
m_httpWebRequest = httpWebReq;
m_method = method;
m_url = responseUrl;
m_version = data.m_version;
m_statusCode = data.m_statusCode;
m_statusDescription = data.m_statusDescription;
m_httpResponseHeaders = data.m_headers;
m_contentLength = data.m_contentLength;
}
internal Connection(ConnectionGroup connectionGroup) : base(null) {
//
// add this Connection to the pool in the connection group,
// keep a weak reference to it
//
m_MaximumUnauthorizedUploadLength = SettingsSectionInternal.Section.MaximumUnauthorizedUploadLength;
if(m_MaximumUnauthorizedUploadLength > 0){
m_MaximumUnauthorizedUploadLength*=1024;
}
m_ResponseData = new CoreResponseData();
m_ConnectionGroup = connectionGroup;
m_ReadBuffer = s_PinnableBufferCache.AllocateBuffer();
m_ReadBufferFromPinnableCache = true;
m_ReadState = ReadState.Start;
m_WaitList = new List<WaitListItem>();
m_WriteList = new ArrayList();
m_AbortDelegate = new HttpAbortDelegate(AbortOrDisassociate);
m_ConnectionUnlock = new UnlockConnectionDelegate(UnlockRequest);
// for status line parsing
m_StatusLineValues = new StatusLineValues();
m_RecycleTimer = ConnectionGroup.ServicePoint.ConnectionLeaseTimerQueue.CreateTimer();
// the following line must be the last line of the constructor
ConnectionGroup.Associate(this);
m_ReadDone = true;
m_WriteDone = true;
m_Error = WebExceptionStatus.Success;
if (PinnableBufferCacheEventSource.Log.IsEnabled())
{
PinnableBufferCacheEventSource.Log.DebugMessage1("CTOR: In System.Net.Connection.Connnection", this.GetHashCode());
}
}
internal static void Add(ref ConnectionReturnResult returnResult, HttpWebRequest request, CoreResponseData coreResponseData)
{
if (coreResponseData == null)
throw new InternalException(); //This may cause duplicate requests if we let it through in retail
if (returnResult == null) {
returnResult = new ConnectionReturnResult();
}
#if DEBUG
//This may cause duplicate requests if we let it through in retail but it's may be expensive to catch here
for (int j = 0; j < returnResult.m_Context.Count; ++j)
if ((object)returnResult.m_Context[j].Request == (object) request)
throw new InternalException();
#endif
returnResult.m_Context.Add(new RequestContext(request, coreResponseData));
}
/*++
ParseResponseData - Parses the incomming headers, and handles
creation of new streams that are found while parsing, and passes
extra data the new streams
Input:
returnResult - returns an object containing items that need to be called
at the end of the read callback
Returns:
bool - true if one should continue reading more data
--*/
private DataParseStatus ParseResponseData(ref ConnectionReturnResult returnResult, out bool requestDone, out CoreResponseData continueResponseData)
{
GlobalLog.Enter("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData()");
DataParseStatus parseStatus = DataParseStatus.NeedMoreData;
DataParseStatus parseSubStatus;
// Indicates whether or not at least one whole request was processed in this loop.
// (i.e. Whether ParseStreamData() was called.
requestDone = false;
continueResponseData = null;
// loop in case of multiple sets of headers or streams,
// that may be generated due to a pipelined response
// Invariants: at the start of this loop, m_BytesRead
// is the number of bytes in the buffer, and m_BytesScanned
// is how many bytes of the buffer we've consumed so far.
// and the m_ReadState var will be updated at end of
// each code path, call to this function to reflect,
// the state, or error condition of the parsing of data
//
// We use the following variables in the code below:
//
// m_ReadState - tracks the current state of our Parsing in a
// response. z.B.
// Start - initial start state and begining of response
// StatusLine - the first line sent in response, include status code
// Headers - \r\n delimiated Header parsing until we find entity body
// Data - Entity Body parsing, if we have all data, we create stream directly
//
// m_ResponseData - An object used to gather Stream, Headers, and other
// tidbits so that a request/Response can receive this data when
// this code is finished processing
//
// m_ReadBuffer - Of course the buffer of data we are parsing from
//
// m_BytesScanned - The bytes scanned in this buffer so far,
// since its always assumed that parse to completion, this
// var becomes ended of known data at the end of this function,
// based off of 0
//
// m_BytesRead - The total bytes read in buffer, should be const,
// till its updated at end of function.
//
//
// Now attempt to parse the data,
// we first parse status line,
// then read headers,
// and finally transfer results to a new stream, and tell request
//
switch (m_ReadState) {
case ReadState.Start:
if (m_CurrentRequest == null)
{
lock (this)
{
if (m_WriteList.Count == 0 || ((m_CurrentRequest = m_WriteList[0] as HttpWebRequest) == null))
{
m_ParseError.Section = WebParseErrorSection.Generic;
m_ParseError.Code = WebParseErrorCode.Generic;
parseStatus = DataParseStatus.Invalid;
break;
}
}
}
//
// Start of new response. Transfer the keep-alive context from the corresponding request to
// the connection
//
m_KeepAlive &= (m_CurrentRequest.KeepAlive || m_CurrentRequest.NtlmKeepAlive);
m_MaximumResponseHeadersLength = m_CurrentRequest.MaximumResponseHeadersLength * 1024;
m_ResponseData = new CoreResponseData();
m_ReadState = ReadState.StatusLine;
m_TotalResponseHeadersLength = 0;
InitializeParseStatusLine();
goto case ReadState.StatusLine;
case ReadState.StatusLine:
//
// Reads HTTP status response line
//
if (SettingsSectionInternal.Section.UseUnsafeHeaderParsing)
{
// This one uses an array to store the parsed values in. Marshal between this legacy way.
int[] statusInts = new int[] { 0, m_StatusLineValues.MajorVersion, m_StatusLineValues.MinorVersion, m_StatusLineValues.StatusCode };
if (m_StatusLineValues.StatusDescription == null)
m_StatusLineValues.StatusDescription = "";
parseSubStatus = ParseStatusLine(
m_ReadBuffer, // buffer we're working with
m_BytesRead, // total bytes read so far
ref m_BytesScanned, // index off of what we've scanned
ref statusInts,
ref m_StatusLineValues.StatusDescription,
ref m_StatusState,
ref m_ParseError);
m_StatusLineValues.MajorVersion = statusInts[1];
m_StatusLineValues.MinorVersion = statusInts[2];
m_StatusLineValues.StatusCode = statusInts[3];
}
else
{
parseSubStatus = ParseStatusLineStrict(
m_ReadBuffer, // buffer we're working with
m_BytesRead, // total bytes read so far
ref m_BytesScanned, // index off of what we've scanned
ref m_StatusState,
m_StatusLineValues,
m_MaximumResponseHeadersLength,
ref m_TotalResponseHeadersLength,
ref m_ParseError);
}
if (parseSubStatus == DataParseStatus.Done)
{
if (Logging.On) Logging.PrintInfo(Logging.Web, this, SR.GetString(SR.net_log_received_status_line, m_StatusLineValues.MajorVersion+"."+m_StatusLineValues.MinorVersion, m_StatusLineValues.StatusCode, m_StatusLineValues.StatusDescription));
SetStatusLineParsed();
m_ReadState = ReadState.Headers;
m_ResponseData.m_ResponseHeaders = new WebHeaderCollection(WebHeaderCollectionType.HttpWebResponse);
goto case ReadState.Headers;
}
else if (parseSubStatus != DataParseStatus.NeedMoreData)
{
//
// report error - either Invalid or DataTooBig
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() ParseStatusLine() parseSubStatus:" + parseSubStatus.ToString());
parseStatus = parseSubStatus;
break;
}
break; // read more data
case ReadState.Headers:
//
// Parse additional lines of header-name: value pairs
//
if (m_BytesScanned >= m_BytesRead) {
//
// we already can tell we need more data
//
break;
}
if (SettingsSectionInternal.Section.UseUnsafeHeaderParsing)
{
parseSubStatus = m_ResponseData.m_ResponseHeaders.ParseHeaders(
m_ReadBuffer,
m_BytesRead,
ref m_BytesScanned,
ref m_TotalResponseHeadersLength,
m_MaximumResponseHeadersLength,
ref m_ParseError);
}
else
{
parseSubStatus = m_ResponseData.m_ResponseHeaders.ParseHeadersStrict(
m_ReadBuffer,
m_BytesRead,
ref m_BytesScanned,
ref m_TotalResponseHeadersLength,
m_MaximumResponseHeadersLength,
ref m_ParseError);
}
if (parseSubStatus == DataParseStatus.Invalid || parseSubStatus == DataParseStatus.DataTooBig)
{
//
// report error
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() ParseHeaders() parseSubStatus:" + parseSubStatus.ToString());
parseStatus = parseSubStatus;
break;
}
else if (parseSubStatus == DataParseStatus.Done)
{
if (Logging.On) Logging.PrintInfo(Logging.Web, this, SR.GetString(SR.net_log_received_headers, m_ResponseData.m_ResponseHeaders.ToString(true)));
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() DataParseStatus.Done StatusCode:" + (int)m_ResponseData.m_StatusCode + " m_BytesRead:" + m_BytesRead + " m_BytesScanned:" + m_BytesScanned);
//get the IIS server version
if(m_IISVersion == -1){
string server = m_ResponseData.m_ResponseHeaders.Server;
if (server != null && server.ToLower(CultureInfo.InvariantCulture).Contains("microsoft-iis")){
int i = server.IndexOf("/");
if(i++>0 && i <server.Length){
m_IISVersion = server[i++] - '0';
while(i < server.Length && Char.IsDigit(server[i])) {
m_IISVersion = m_IISVersion*10 + server[i++] - '0';
}
}
}
//we got a response,so if we don't know the server by now and it wasn't a 100 continue,
//we can't assume we will ever know it. IIS5 sends its server header w/ the continue
if(m_IISVersion == -1 && m_ResponseData.m_StatusCode != HttpStatusCode.Continue){
m_IISVersion = 0;
}
}
if (m_ResponseData.m_StatusCode == HttpStatusCode.Continue || m_ResponseData.m_StatusCode == HttpStatusCode.BadRequest) {
GlobalLog.Assert(m_CurrentRequest != null, "Connection#{0}::ParseResponseData()|m_CurrentRequest == null", ValidationHelper.HashString(this));
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() HttpWebRequest#" + ValidationHelper.HashString(m_CurrentRequest));
if (m_ResponseData.m_StatusCode == HttpStatusCode.BadRequest) {
// If we have a 400 and we were sending a chunked request going through to a proxy with a chunked upload,
// this proxy is a partially compliant so shut off fancy features (pipelining and chunked uploads)
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() got a 400 StatusDescription:" + m_ResponseData.m_StatusDescription);
if (ServicePoint.HttpBehaviour == HttpBehaviour.HTTP11
&& m_CurrentRequest.HttpWriteMode==HttpWriteMode.Chunked
&& m_ResponseData.m_ResponseHeaders.Via != null
&& string.Compare(m_ResponseData.m_StatusDescription, "Bad Request ( The HTTP request includes a non-supported header. Contact the Server administrator. )", StringComparison.OrdinalIgnoreCase)==0) {
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() downgrading server to HTTP11PartiallyCompliant.");
ServicePoint.HttpBehaviour = HttpBehaviour.HTTP11PartiallyCompliant;
}
}
else {
// If we have an HTTP continue, eat these headers and look
// for the 200 OK
//
// we got a 100 Continue. set this on the HttpWebRequest
//
m_CurrentRequest.Saw100Continue = true;
if (!ServicePoint.Understands100Continue) {
//
// and start expecting it again if this behaviour was turned off
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() HttpWebRequest#" + ValidationHelper.HashString(m_CurrentRequest) + " ServicePoint#" + ValidationHelper.HashString(ServicePoint) + " sent UNexpected 100 Continue");
ServicePoint.Understands100Continue = true;
}
//
// set Continue Ack on request.
//
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() calling SetRequestContinue()");
continueResponseData = m_ResponseData;
//if we got a 100continue we ---- it and start looking for a final response
goto case ReadState.Start;
}
}
m_ReadState = ReadState.Data;
goto case ReadState.Data;
}
// need more data,
break;
case ReadState.Data:
// (check status code for continue handling)
// 1. Figure out if its Chunked, content-length, or encoded
// 2. Takes extra data, place in stream(s)
// 3. Wake up blocked stream requests
//
// Got through one entire response
requestDone = true;
// parse and create a stream if needed
parseStatus = ParseStreamData(ref returnResult);
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() result:" + parseStatus);
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData()" + " WriteDone:" + m_WriteDone + " ReadDone:" + m_ReadDone + " WaitList:" + m_WaitList.Count + " WriteList:" + m_WriteList.Count);
break;
}
if (m_BytesScanned == m_BytesRead)
ClearReaderState();
GlobalLog.Print("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData() m_ReadState:" + m_ReadState);
GlobalLog.Leave("Connection#" + ValidationHelper.HashString(this) + "::ParseResponseData()", parseStatus.ToString());
return parseStatus;
}
internal void SetRequestContinue(CoreResponseData continueResponse)
{
GlobalLog.Enter("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue");
GlobalLog.ThreadContract(ThreadKinds.Unknown, "HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue");
_RequestContinueCount++;
if (HttpWriteMode == HttpWriteMode.None)
{
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue - not a POST type request, return");
return;
}
GlobalLog.Print("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue() _RequestContinueCount:" + _RequestContinueCount);
if (m_ContinueGate.Complete())
{
// Invoke the 100 continue delegate if the user supplied one and we received a 100 Continue.
if (continueResponse != null && ContinueDelegate != null)
{
GlobalLog.Print("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue() calling ContinueDelegate()");
ExecutionContext x = Async ? GetWritingContext().ContextCopy : null;
if (x == null)
{
ContinueDelegate((int)continueResponse.m_StatusCode, continueResponse.m_ResponseHeaders);
}
else
{
ExecutionContext.Run(x, new ContextCallback(CallContinueDelegateCallback), continueResponse);
}
}
EndWriteHeaders_Part2();
}
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue");
}
//
// When we got a live response, this method will construct the response object
// and then consult with caching protocol on the appropriate action.
// On return the response can be re-created.
// Under some cases this method may initate retrying of the current request.
//
private void SetResponse(CoreResponseData coreResponseData) {
GlobalLog.ThreadContract(ThreadKinds.Unknown, "HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse");
GlobalLog.Print("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse - coreResponseData=" + ValidationHelper.HashString(coreResponseData));
try {
// Consider removing this block as all these should be already signalled
if (!Async)
{
LazyAsyncResult chkConnectionAsyncResult = ConnectionAsyncResult;
LazyAsyncResult chkReaderAsyncResult = ConnectionReaderAsyncResult;
chkConnectionAsyncResult.InvokeCallback(coreResponseData); // ref "coreResponseData": could be anything except for AsyncTriState or stream
chkReaderAsyncResult.InvokeCallback(coreResponseData); // ref "coreResponseData": could be anything except for null
}
if (coreResponseData != null)
{
if (coreResponseData.m_ConnectStream.CanTimeout)
{
coreResponseData.m_ConnectStream.WriteTimeout = ReadWriteTimeout;
coreResponseData.m_ConnectStream.ReadTimeout = ReadWriteTimeout;
}
_HttpResponse = new HttpWebResponse(GetRemoteResourceUri(), CurrentMethod,
coreResponseData, _MediaType, UsesProxySemantics, AutomaticDecompression,
IsWebSocketRequest, ConnectionGroupName);
if(Logging.On)Logging.Associate(Logging.Web, this, coreResponseData.m_ConnectStream);
if(Logging.On)Logging.Associate(Logging.Web, this, _HttpResponse);
ProcessResponse();
}
else
{
GlobalLog.Assert("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse()", "coreResponseData == null");
Abort(null, AbortState.Public);
GlobalLog.LeaveException("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse", new InternalException());
}
}
catch (Exception exception) {
Abort(exception, AbortState.Internal);
GlobalLog.LeaveException("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetResponse", exception);
}
return;
}
private DataParseStatus ParseResponseData(ref ConnectionReturnResult returnResult, out bool requestDone, out CoreResponseData continueResponseData)
{
DataParseStatus status2;
DataParseStatus needMoreData = DataParseStatus.NeedMoreData;
requestDone = false;
continueResponseData = null;
switch (this.m_ReadState)
{
case ReadState.Start:
break;
case ReadState.StatusLine:
goto Label_00F6;
case ReadState.Headers:
goto Label_0299;
case ReadState.Data:
goto Label_050A;
default:
goto Label_0515;
}
Label_002C:
if (this.m_CurrentRequest == null)
{
lock (this)
{
if ((this.m_WriteList.Count == 0) || ((this.m_CurrentRequest = this.m_WriteList[0] as HttpWebRequest) == null))
{
this.m_ParseError.Section = WebParseErrorSection.Generic;
this.m_ParseError.Code = WebParseErrorCode.Generic;
needMoreData = DataParseStatus.Invalid;
goto Label_0515;
}
}
}
this.m_KeepAlive &= this.m_CurrentRequest.KeepAlive || this.m_CurrentRequest.NtlmKeepAlive;
this.m_MaximumResponseHeadersLength = this.m_CurrentRequest.MaximumResponseHeadersLength * 0x400;
this.m_ResponseData = new CoreResponseData();
this.m_ReadState = ReadState.StatusLine;
this.m_TotalResponseHeadersLength = 0;
this.InitializeParseStatusLine();
Label_00F6:
if (SettingsSectionInternal.Section.UseUnsafeHeaderParsing)
{
int[] numArray2 = new int[4];
numArray2[1] = this.m_StatusLineValues.MajorVersion;
numArray2[2] = this.m_StatusLineValues.MinorVersion;
numArray2[3] = this.m_StatusLineValues.StatusCode;
int[] statusLineInts = numArray2;
if (this.m_StatusLineValues.StatusDescription == null)
{
this.m_StatusLineValues.StatusDescription = "";
}
status2 = this.ParseStatusLine(this.m_ReadBuffer, this.m_BytesRead, ref this.m_BytesScanned, ref statusLineInts, ref this.m_StatusLineValues.StatusDescription, ref this.m_StatusState, ref this.m_ParseError);
this.m_StatusLineValues.MajorVersion = statusLineInts[1];
this.m_StatusLineValues.MinorVersion = statusLineInts[2];
this.m_StatusLineValues.StatusCode = statusLineInts[3];
}
else
{
status2 = ParseStatusLineStrict(this.m_ReadBuffer, this.m_BytesRead, ref this.m_BytesScanned, ref this.m_StatusState, this.m_StatusLineValues, this.m_MaximumResponseHeadersLength, ref this.m_TotalResponseHeadersLength, ref this.m_ParseError);
}
if (status2 == DataParseStatus.Done)
{
if (Logging.On)
{
Logging.PrintInfo(Logging.Web, this, SR.GetString("net_log_received_status_line", new object[] { this.m_StatusLineValues.MajorVersion + "." + this.m_StatusLineValues.MinorVersion, this.m_StatusLineValues.StatusCode, this.m_StatusLineValues.StatusDescription }));
}
this.SetStatusLineParsed();
this.m_ReadState = ReadState.Headers;
this.m_ResponseData.m_ResponseHeaders = new WebHeaderCollection(WebHeaderCollectionType.HttpWebResponse);
}
else
{
if (status2 != DataParseStatus.NeedMoreData)
{
needMoreData = status2;
}
goto Label_0515;
}
Label_0299:
if (this.m_BytesScanned >= this.m_BytesRead)
{
goto Label_0515;
}
if (SettingsSectionInternal.Section.UseUnsafeHeaderParsing)
{
status2 = this.m_ResponseData.m_ResponseHeaders.ParseHeaders(this.m_ReadBuffer, this.m_BytesRead, ref this.m_BytesScanned, ref this.m_TotalResponseHeadersLength, this.m_MaximumResponseHeadersLength, ref this.m_ParseError);
}
else
{
status2 = this.m_ResponseData.m_ResponseHeaders.ParseHeadersStrict(this.m_ReadBuffer, this.m_BytesRead, ref this.m_BytesScanned, ref this.m_TotalResponseHeadersLength, this.m_MaximumResponseHeadersLength, ref this.m_ParseError);
}
if ((status2 == DataParseStatus.Invalid) || (status2 == DataParseStatus.DataTooBig))
{
needMoreData = status2;
goto Label_0515;
}
if (status2 != DataParseStatus.Done)
{
goto Label_0515;
}
if (Logging.On)
{
Logging.PrintInfo(Logging.Web, this, SR.GetString("net_log_received_headers", new object[] { this.m_ResponseData.m_ResponseHeaders.ToString(true) }));
}
if (this.m_IISVersion == -1)
{
int num;
string server = this.m_ResponseData.m_ResponseHeaders.Server;
if (((server != null) && server.ToLower(CultureInfo.InvariantCulture).Contains("microsoft-iis")) && ((server.IndexOf("/")++ > 0) && (num < server.Length)))
{
this.m_IISVersion = server[num++] - '0';
while ((num < server.Length) && char.IsDigit(server[num]))
{
this.m_IISVersion = ((this.m_IISVersion * 10) + server[num++]) - 0x30;
}
}
if ((this.m_IISVersion == -1) && (this.m_ResponseData.m_StatusCode != HttpStatusCode.Continue))
{
this.m_IISVersion = 0;
}
}
if ((this.m_ResponseData.m_StatusCode == HttpStatusCode.Continue) || (this.m_ResponseData.m_StatusCode == HttpStatusCode.BadRequest))
{
if (this.m_ResponseData.m_StatusCode == HttpStatusCode.BadRequest)
{
if (((this.ServicePoint.HttpBehaviour == HttpBehaviour.HTTP11) && (this.m_CurrentRequest.HttpWriteMode == HttpWriteMode.Chunked)) && ((this.m_ResponseData.m_ResponseHeaders.Via != null) && (string.Compare(this.m_ResponseData.m_StatusDescription, "Bad Request ( The HTTP request includes a non-supported header. Contact the Server administrator. )", StringComparison.OrdinalIgnoreCase) == 0)))
{
this.ServicePoint.HttpBehaviour = HttpBehaviour.HTTP11PartiallyCompliant;
}
}
else
{
this.m_CurrentRequest.Saw100Continue = true;
if (!this.ServicePoint.Understands100Continue)
{
this.ServicePoint.Understands100Continue = true;
}
continueResponseData = this.m_ResponseData;
goto Label_002C;
}
}
this.m_ReadState = ReadState.Data;
Label_050A:
requestDone = true;
needMoreData = this.ParseStreamData(ref returnResult);
Label_0515:
if (this.m_BytesScanned == this.m_BytesRead)
{
this.ClearReaderState();
}
return needMoreData;
}
internal void SetRequestContinue(CoreResponseData continueResponse)
{
GlobalLog.Enter("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue");
GlobalLog.ThreadContract(ThreadKinds.Unknown, "HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue");
_RequestContinueCount++;
if (HttpWriteMode == HttpWriteMode.None)
{
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue - not a POST type request, return");
return;
}
GlobalLog.Print("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue() _RequestContinueCount:" + _RequestContinueCount);
if (m_ContinueGate.Complete())
{
// Generally, in Sync mode there will not be a timer (instead PollAndRead times out). However, in mixed mode
// there can be. If there is a timer, whether or not to call EndWriteHeaders_Part2 depends on whether
// we can successfully cancel it here. Otherwise, the timeout callback should call it.
//
// m_ContinueGate guards the synchronization of m_ContinueTimer.
TimerThread.Timer timer = m_ContinueTimer;
m_ContinueTimer = null;
// In the case there was no timer, just call EndWriteHeaders_Part2.
if (timer == null || timer.Cancel())
{
// Invoke the 100 continue delegate if the user supplied one and we received a 100 Continue.
if (continueResponse != null && ContinueDelegate != null)
{
GlobalLog.Print("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue() calling ContinueDelegate()");
ExecutionContext x = null;
if (x == null)
{
ContinueDelegate((int) continueResponse.m_StatusCode, continueResponse.m_ResponseHeaders);
}
else
{
ExecutionContext.Run(x, new ContextCallback(CallContinueDelegateCallback), continueResponse);
}
}
EndWriteHeaders_Part2();
}
}
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(this) + "::SetRequestContinue");
}
internal HttpWebResponse(
Uri responseUri,
string verb,
CoreResponseData coreData,
string mediaType,
bool usesProxySemantics) {
m_Uri = responseUri;
m_Verb = verb;
m_MediaType = mediaType;
m_UsesProxySemantics = usesProxySemantics;
m_ConnectStream = coreData.m_ConnectStream;
m_HttpResponseHeaders = coreData.m_ResponseHeaders;
m_ContentLength = coreData.m_ContentLength;
m_StatusCode = coreData.m_StatusCode;
m_StatusDescription = coreData.m_StatusDescription;
m_Version = coreData.m_Version;
// handle Content-Location header, by combining it with the orginal request.
string contentLocation = m_HttpResponseHeaders[HttpKnownHeaderNames.ContentLocation];
if (contentLocation != null) {
try {
m_Uri = new Uri(m_Uri, contentLocation);
} catch (Exception e) {
GlobalLog.Assert(false, "Exception on Uri parsing", e.ToString());
}
}
}
