private HttpResponseMessage CreateResponseMessage(SafeWinHttpHandle requestHandle, HttpRequestMessage request)
{
var response = new HttpResponseMessage();
bool useDeflateDecompression = false;
bool useGzipDecompression = false;
// Get HTTP version, status code, reason phrase from the response headers.
string version = GetResponseHeaderStringInfo(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION);
if (string.Compare("HTTP/1.1", version, StringComparison.OrdinalIgnoreCase) == 0)
{
response.Version = new Version(1, 1);
}
else if (string.Compare("HTTP/1.0", version, StringComparison.OrdinalIgnoreCase) == 0)
{
response.Version = new Version(1, 0);
}
else
{
response.Version = null;
}
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
response.ReasonPhrase = GetResponseHeaderStringInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT);
if (_doManualDecompressionCheck)
{
string contentEncoding = GetResponseHeaderStringInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING);
if (!string.IsNullOrEmpty(contentEncoding))
{
if (contentEncoding.IndexOf(EncodingNameDeflate, StringComparison.OrdinalIgnoreCase) > -1)
{
useDeflateDecompression = true;
}
else if (contentEncoding.IndexOf(EncodingNameGzip, StringComparison.OrdinalIgnoreCase) > -1)
{
useGzipDecompression = true;
}
}
}
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(requestHandle);
Stream decompressedStream = responseStream;
if (_doManualDecompressionCheck)
{
if (useDeflateDecompression)
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
}
else if (useGzipDecompression)
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
}
}
var content = new StreamContent(decompressedStream);
response.Content = content;
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, useDeflateDecompression || useGzipDecompression);
// Store response header cookies into custom CookieContainer.
if (_cookieUsePolicy == CookieUsePolicy.UseSpecifiedCookieContainer)
{
Debug.Assert(_cookieContainer != null);
if (response.Headers.Contains(HeaderNameSetCookie))
{
IEnumerable<string> cookieHeaders = response.Headers.GetValues(HeaderNameSetCookie);
foreach (var cookieHeader in cookieHeaders)
{
try
{
_cookieContainer.SetCookies(request.RequestUri, cookieHeader);
}
catch (CookieException)
{
// We ignore malformed cookies in the response.
}
}
}
}
// Since the headers have been read, set the "receive" timeout to be based on each read
// call of the response body data. WINHTTP_OPTION_RECEIVE_TIMEOUT sets a timeout on each
// lower layer winsock read.
uint optionData = (uint)_receiveDataTimeout.TotalMilliseconds;
SetWinHttpOption(requestHandle, Interop.WinHttp.WINHTTP_OPTION_RECEIVE_TIMEOUT, ref optionData);
return response;
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Get HTTP version, status code, reason phrase from the response headers.
string version = GetResponseHeaderStringInfo(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION);
if (string.Compare("HTTP/1.1", version, StringComparison.OrdinalIgnoreCase) == 0)
{
response.Version = HttpVersion.Version11;
}
else if (string.Compare("HTTP/1.0", version, StringComparison.OrdinalIgnoreCase) == 0)
{
response.Version = HttpVersion.Version10;
}
else
{
response.Version = HttpVersion.Unknown;
}
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
response.ReasonPhrase = GetResponseHeaderStringInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT);
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(state);
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
string contentEncoding = GetResponseHeaderStringInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING);
if (!string.IsNullOrEmpty(contentEncoding))
{
if (contentEncoding.IndexOf(EncodingNameDeflate, StringComparison.OrdinalIgnoreCase) > -1)
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (contentEncoding.IndexOf(EncodingNameGzip, StringComparison.OrdinalIgnoreCase) > -1)
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
var content = new StreamContent(decompressedStream);
response.Content = content;
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, stripEncodingHeaders);
// Store response header cookies into custom CookieContainer.
if (cookieUsePolicy == CookieUsePolicy.UseSpecifiedCookieContainer)
{
Debug.Assert(cookieContainer != null);
if (response.Headers.Contains(HeaderNameSetCookie))
{
IEnumerable<string> cookieHeaders = response.Headers.GetValues(HeaderNameSetCookie);
foreach (var cookieHeader in cookieHeaders)
{
try
{
cookieContainer.SetCookies(request.RequestUri, cookieHeader);
}
catch (CookieException)
{
// We ignore malformed cookies in the response.
}
}
}
}
return response;
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Create a single buffer to use for all subsequent WinHttpQueryHeaders string interop calls.
// This buffer is the length needed for WINHTTP_QUERY_RAW_HEADERS_CRLF, which includes the status line
// and all headers separated by CRLF, so it should be large enough for any individual status line or header queries.
int bufferLength = GetResponseHeaderCharBufferLength(requestHandle, Interop.WinHttp.WINHTTP_QUERY_RAW_HEADERS_CRLF);
char[] buffer = ArrayPool <char> .Shared.Rent(bufferLength);
try
{
// Get HTTP version, status code, reason phrase from the response headers.
if (IsResponseHttp2(requestHandle))
{
response.Version = WinHttpHandler.HttpVersion20;
}
else
{
int versionLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION, buffer);
response.Version =
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.1", buffer, 0, versionLength) ? HttpVersionInternal.Version11 :
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.0", buffer, 0, versionLength) ? HttpVersionInternal.Version10 :
WinHttpHandler.HttpVersionUnknown;
}
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
int reasonPhraseLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT, buffer);
response.ReasonPhrase = reasonPhraseLength > 0 ?
GetReasonPhrase(response.StatusCode, buffer, reasonPhraseLength) :
string.Empty;
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(requestHandle, state);
state.RequestHandle = null; // ownership successfully transfered to WinHttpResponseStram.
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
int contentEncodingStartIndex = 0;
int contentEncodingLength = GetResponseHeader(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING,
buffer);
CharArrayHelpers.Trim(buffer, ref contentEncodingStartIndex, ref contentEncodingLength);
if (contentEncodingLength > 0)
{
if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameGzip, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameDeflate, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
response.Content = new NoWriteNoSeekStreamContent(decompressedStream);
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, buffer, stripEncodingHeaders);
if (response.RequestMessage.Method != HttpMethod.Head)
{
state.ExpectedBytesToRead = response.Content.Headers.ContentLength;
}
return(response);
}
finally
{
ArrayPool <char> .Shared.Return(buffer);
}
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Get HTTP version, status code, reason phrase from the response headers.
string version = GetResponseHeaderStringInfo(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION);
if (string.Compare("HTTP/1.1", version, StringComparison.OrdinalIgnoreCase) == 0)
{
response.Version = HttpVersion.Version11;
}
else if (string.Compare("HTTP/1.0", version, StringComparison.OrdinalIgnoreCase) == 0)
{
response.Version = HttpVersion.Version10;
}
else
{
response.Version = HttpVersion.Unknown;
}
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
response.ReasonPhrase = GetResponseHeaderStringInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT);
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(state);
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
string contentEncoding = GetResponseHeaderStringInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING);
if (!string.IsNullOrEmpty(contentEncoding))
{
if (contentEncoding.IndexOf(EncodingNameDeflate, StringComparison.OrdinalIgnoreCase) > -1)
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (contentEncoding.IndexOf(EncodingNameGzip, StringComparison.OrdinalIgnoreCase) > -1)
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
var content = new StreamContent(decompressedStream);
response.Content = content;
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, stripEncodingHeaders);
return(response);
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Create a single buffer to use for all subsequent WinHttpQueryHeaders string interop calls.
// This buffer is the length needed for WINHTTP_QUERY_RAW_HEADERS_CRLF, which includes the status line
// and all headers separated by CRLF, so it should be large enough for any individual status line or header queries.
int bufferLength = GetResponseHeaderCharBufferLength(requestHandle, Interop.WinHttp.WINHTTP_QUERY_RAW_HEADERS_CRLF);
char[] buffer = new char[bufferLength];
// Get HTTP version, status code, reason phrase from the response headers.
int versionLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION, buffer);
response.Version =
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.1", buffer, 0, versionLength) ? HttpVersion.Version11 :
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.0", buffer, 0, versionLength) ? HttpVersion.Version10 :
HttpVersion.Unknown;
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
int reasonPhraseLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT, buffer);
response.ReasonPhrase = reasonPhraseLength > 0 ?
GetReasonPhrase(response.StatusCode, buffer, reasonPhraseLength) :
string.Empty;
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(requestHandle, state);
state.RequestHandle = null; // ownership successfully transfered to WinHttpResponseStram.
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
int contentEncodingStartIndex = 0;
int contentEncodingLength = GetResponseHeader(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING,
buffer);
CharArrayHelpers.Trim(buffer, ref contentEncodingStartIndex, ref contentEncodingLength);
if (contentEncodingLength > 0)
{
if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameGzip, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameDeflate, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
#if HTTP_DLL
var content = new StreamContent(decompressedStream, state.CancellationToken);
#else
// TODO: Issue https://github.com/dotnet/corefx/issues/9071
// We'd like to be able to pass state.CancellationToken into the StreamContent so that its
// SerializeToStreamAsync method can use it, but that ctor isn't public, nor is there a
// SerializeToStreamAsync override that takes a CancellationToken.
var content = new StreamContent(decompressedStream);
#endif
response.Content = content;
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, buffer, stripEncodingHeaders);
if (response.RequestMessage.Method != HttpMethod.Head)
{
state.ExpectedBytesToRead = response.Content.Headers.ContentLength;
}
return(response);
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Create a single buffer to use for all subsequent WinHttpQueryHeaders string interop calls.
// This buffer is the length needed for WINHTTP_QUERY_RAW_HEADERS_CRLF, which includes the status line
// and all headers separated by CRLF, so it should be large enough for any individual status line or header queries.
int bufferLength = GetResponseHeaderCharBufferLength(requestHandle, Interop.WinHttp.WINHTTP_QUERY_RAW_HEADERS_CRLF);
char[] buffer = ArrayPool<char>.Shared.Rent(bufferLength);
try
{
// Get HTTP version, status code, reason phrase from the response headers.
if (IsResponseHttp2(requestHandle))
{
response.Version = WinHttpHandler.HttpVersion20;
}
else
{
int versionLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION, buffer);
response.Version =
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.1", buffer, 0, versionLength) ? HttpVersionInternal.Version11 :
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.0", buffer, 0, versionLength) ? HttpVersionInternal.Version10 :
WinHttpHandler.HttpVersionUnknown;
}
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
int reasonPhraseLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT, buffer);
response.ReasonPhrase = reasonPhraseLength > 0 ?
GetReasonPhrase(response.StatusCode, buffer, reasonPhraseLength) :
string.Empty;
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(requestHandle, state);
state.RequestHandle = null; // ownership successfully transfered to WinHttpResponseStram.
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
int contentEncodingStartIndex = 0;
int contentEncodingLength = GetResponseHeader(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING,
buffer);
CharArrayHelpers.Trim(buffer, ref contentEncodingStartIndex, ref contentEncodingLength);
if (contentEncodingLength > 0)
{
if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameGzip, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameDeflate, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
response.Content = new NoWriteNoSeekStreamContent(decompressedStream, state.CancellationToken);
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, buffer, stripEncodingHeaders);
if (response.RequestMessage.Method != HttpMethod.Head)
{
state.ExpectedBytesToRead = response.Content.Headers.ContentLength;
}
return response;
}
finally
{
ArrayPool<char>.Shared.Return(buffer);
}
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Create a single buffer to use for all subsequent WinHttpQueryHeaders string interop calls.
// This buffer is the length needed for WINHTTP_QUERY_RAW_HEADERS_CRLF, which includes the status line
// and all headers separated by CRLF, so it should be large enough for any individual status line or header queries.
int bufferLength = GetResponseHeaderCharBufferLength(requestHandle, Interop.WinHttp.WINHTTP_QUERY_RAW_HEADERS_CRLF);
char[] buffer = new char[bufferLength];
// Get HTTP version, status code, reason phrase from the response headers.
int versionLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION, buffer);
response.Version =
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.1", buffer, 0, versionLength) ? HttpVersion.Version11 :
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.0", buffer, 0, versionLength) ? HttpVersion.Version10 :
HttpVersion.Unknown;
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
int reasonPhraseLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT, buffer);
response.ReasonPhrase = reasonPhraseLength > 0 ?
GetReasonPhrase(response.StatusCode, buffer, reasonPhraseLength) :
string.Empty;
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(requestHandle, state);
state.RequestHandle = null; // ownership successfully transfered to WinHttpResponseStram.
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
int contentEncodingStartIndex = 0;
int contentEncodingLength = GetResponseHeader(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING,
buffer);
CharArrayHelpers.Trim(buffer, ref contentEncodingStartIndex, ref contentEncodingLength);
if (contentEncodingLength > 0)
{
if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameGzip, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameDeflate, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
#if HTTP_DLL
var content = new StreamContent(decompressedStream, state.CancellationToken);
#else
// TODO: Issue https://github.com/dotnet/corefx/issues/9071
// We'd like to be able to pass state.CancellationToken into the StreamContent so that its
// SerializeToStreamAsync method can use it, but that ctor isn't public, nor is there a
// SerializeToStreamAsync override that takes a CancellationToken.
var content = new StreamContent(decompressedStream);
#endif
response.Content = content;
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, buffer, stripEncodingHeaders);
if (response.RequestMessage.Method != HttpMethod.Head)
{
state.ExpectedBytesToRead = response.Content.Headers.ContentLength;
}
return response;
}
public static HttpResponseMessage CreateResponseMessage(
WinHttpRequestState state,
bool doManualDecompressionCheck)
{
HttpRequestMessage request = state.RequestMessage;
SafeWinHttpHandle requestHandle = state.RequestHandle;
CookieUsePolicy cookieUsePolicy = state.Handler.CookieUsePolicy;
CookieContainer cookieContainer = state.Handler.CookieContainer;
var response = new HttpResponseMessage();
bool stripEncodingHeaders = false;
// Create a single buffer to use for all subsequent WinHttpQueryHeaders string interop calls.
// This buffer is the length needed for WINHTTP_QUERY_RAW_HEADERS_CRLF, which includes the status line
// and all headers separated by CRLF, so it should be large enough for any individual status line or header queries.
int bufferLength = GetResponseHeaderCharBufferLength(requestHandle, Interop.WinHttp.WINHTTP_QUERY_RAW_HEADERS_CRLF);
char[] buffer = new char[bufferLength];
// Get HTTP version, status code, reason phrase from the response headers.
int versionLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_VERSION, buffer);
response.Version =
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.1", buffer, 0, versionLength) ? HttpVersion.Version11 :
CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase("HTTP/1.0", buffer, 0, versionLength) ? HttpVersion.Version10 :
HttpVersion.Unknown;
response.StatusCode = (HttpStatusCode)GetResponseHeaderNumberInfo(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_STATUS_CODE);
int reasonPhraseLength = GetResponseHeader(requestHandle, Interop.WinHttp.WINHTTP_QUERY_STATUS_TEXT, buffer);
if (reasonPhraseLength > 0)
{
response.ReasonPhrase = GetReasonPhrase(response.StatusCode, buffer, reasonPhraseLength);
}
// Create response stream and wrap it in a StreamContent object.
var responseStream = new WinHttpResponseStream(state);
Stream decompressedStream = responseStream;
if (doManualDecompressionCheck)
{
int contentEncodingStartIndex = 0;
int contentEncodingLength = GetResponseHeader(
requestHandle,
Interop.WinHttp.WINHTTP_QUERY_CONTENT_ENCODING,
buffer);
CharArrayHelpers.Trim(buffer, ref contentEncodingStartIndex, ref contentEncodingLength);
if (contentEncodingLength > 0)
{
if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameGzip, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
else if (CharArrayHelpers.EqualsOrdinalAsciiIgnoreCase(
EncodingNameDeflate, buffer, contentEncodingStartIndex, contentEncodingLength))
{
decompressedStream = new DeflateStream(responseStream, CompressionMode.Decompress);
stripEncodingHeaders = true;
}
}
}
var content = new StreamContent(decompressedStream);
response.Content = content;
response.RequestMessage = request;
// Parse raw response headers and place them into response message.
ParseResponseHeaders(requestHandle, response, buffer, stripEncodingHeaders);
return response;
}