private void ParseHeaders(string responseHeaders)
{
if (string.IsNullOrEmpty(responseHeaders))
{
return;
}
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseHeaders);
WebParseError error = new WebParseError();
int totalResponseHeadersLength = 0;
int offset = 0;
int maxHeaderLength = 64000;
try
{
DataParseStatus result = this.headers.ParseHeaders(buffer, buffer.Length, ref offset, ref totalResponseHeadersLength, maxHeaderLength, ref error);
if (result != DataParseStatus.Done)
{
throw WebException.CreateInternal("HttpWebResponse.ParseHeaders");
}
}
catch (WebException)
{
throw;
}
catch (Exception e)
{
string message = System.Data.Services.Client.Strings.HttpWeb_Internal("HttpWebResponse.ParseHeaders.2");
throw new WebException(message, e);
}
}
private void ParseHeaders(string responseHeaders)
{
if (string.IsNullOrEmpty(responseHeaders))
{
return;
}
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseHeaders);
WebParseError error = new WebParseError();
int totalResponseHeadersLength = 0;
int offset = 0;
int maxHeaderLength = 64000;
try
{
DataParseStatus result = this.headers.ParseHeaders(buffer, buffer.Length, ref offset, ref totalResponseHeadersLength, maxHeaderLength, ref error);
if (result != DataParseStatus.Done)
{
throw WebException.CreateInternal("HttpWebResponse.ParseHeaders");
}
}
catch (WebException)
{
throw;
}
catch (Exception e)
{
string message = System.Data.Services.Client.Strings.HttpWeb_Internal("HttpWebResponse.ParseHeaders.2");
throw new WebException(message, e);
}
}
internal DataParseStatus ParseHeaders(
byte[] byteBuffer,
int size,
ref int unparsed,
ref int totalResponseHeadersLength,
int maximumResponseHeadersLength,
ref WebParseError parseError)
{
if (byteBuffer.Length < size)
{
return DataParseStatus.NeedMoreData;
}
char ch;
int headerNameStartOffset = -1;
int headerNameEndOffset = -1;
int headerValueStartOffset = -1;
int headerValueEndOffset = -1;
int numberOfLf = -1;
int index = unparsed;
bool spaceAfterLf;
string headerMultiLineValue;
string headerName;
string headerValue;
int localTotalResponseHeadersLength = totalResponseHeadersLength;
WebParseErrorCode parseErrorCode = WebParseErrorCode.Generic;
DataParseStatus parseStatus = DataParseStatus.Invalid;
for (;;)
{
headerName = string.Empty;
headerValue = string.Empty;
spaceAfterLf = false;
headerMultiLineValue = null;
if (this.Count == 0)
{
while (index < size)
{
ch = (char)byteBuffer[index];
if (ch == ' ' || ch == '\t')
{
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
}
headerNameStartOffset = index;
while (index < size)
{
ch = (char)byteBuffer[index];
if (ch != ':' && ch != '\n')
{
if (ch > ' ')
{
headerNameEndOffset = index;
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
if (ch == ':')
{
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
break;
}
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
startOfValue:
numberOfLf = (this.Count == 0 && headerNameEndOffset < 0) ? 1 : 0;
while (index < size && numberOfLf < 2)
{
ch = (char)byteBuffer[index];
if (ch <= ' ')
{
if (ch == '\n')
{
numberOfLf++;
if (numberOfLf == 1)
{
if (index + 1 == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
spaceAfterLf = (char)byteBuffer[index + 1] == ' ' || (char)byteBuffer[index + 1] == '\t';
}
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (numberOfLf == 2 || (numberOfLf == 1 && !spaceAfterLf))
{
goto addHeader;
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
headerValueStartOffset = index;
while (index < size)
{
ch = (char)byteBuffer[index];
if (ch != '\n')
{
if (ch > ' ')
{
headerValueEndOffset = index;
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
numberOfLf = 0;
while (index < size && numberOfLf < 2)
{
ch = (char)byteBuffer[index];
if (ch == '\r' || ch == '\n')
{
if (ch == '\n')
{
numberOfLf++;
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (index == size && numberOfLf < 2)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
addHeader:
if (headerValueStartOffset >= 0 && headerValueStartOffset > headerNameEndOffset && headerValueEndOffset >= headerValueStartOffset)
{
headerValue = System.Text.Encoding.UTF8.GetString(byteBuffer, headerValueStartOffset, headerValueEndOffset - headerValueStartOffset + 1);
}
headerMultiLineValue = (headerMultiLineValue == null ? headerValue : headerMultiLineValue + " " + headerValue);
if (index < size && numberOfLf == 1)
{
ch = (char)byteBuffer[index];
if (ch == ' ' || ch == '\t')
{
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
goto startOfValue;
}
}
if (headerNameStartOffset >= 0 && headerNameEndOffset >= headerNameStartOffset)
{
headerName = System.Text.Encoding.UTF8.GetString(byteBuffer, headerNameStartOffset, headerNameEndOffset - headerNameStartOffset + 1);
}
if (headerName.Length > 0)
{
this.Add(headerName, headerMultiLineValue);
}
totalResponseHeadersLength = localTotalResponseHeadersLength;
unparsed = index;
if (numberOfLf == 2)
{
parseStatus = DataParseStatus.Done;
goto quit;
}
}
quit:
if (parseStatus == DataParseStatus.Invalid)
{
parseError.Section = WebParseErrorSection.ResponseHeader;
parseError.Code = parseErrorCode;
}
return parseStatus;
}
internal DataParseStatus ParseHeaders(
byte[] byteBuffer,
int size,
ref int unparsed,
ref int totalResponseHeadersLength,
int maximumResponseHeadersLength,
ref WebParseError parseError)
{
if (byteBuffer.Length < size)
{
return(DataParseStatus.NeedMoreData);
}
char ch;
int headerNameStartOffset = -1;
int headerNameEndOffset = -1;
int headerValueStartOffset = -1;
int headerValueEndOffset = -1;
int numberOfLf = -1;
int index = unparsed;
bool spaceAfterLf;
string headerMultiLineValue;
string headerName;
string headerValue;
int localTotalResponseHeadersLength = totalResponseHeadersLength;
WebParseErrorCode parseErrorCode = WebParseErrorCode.Generic;
DataParseStatus parseStatus = DataParseStatus.Invalid;
for (;;)
{
headerName = string.Empty;
headerValue = string.Empty;
spaceAfterLf = false;
headerMultiLineValue = null;
if (this.Count == 0)
{
while (index < size)
{
ch = (char)byteBuffer[index];
if (ch == ' ' || ch == '\t')
{
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
}
headerNameStartOffset = index;
while (index < size)
{
ch = (char)byteBuffer[index];
if (ch != ':' && ch != '\n')
{
if (ch > ' ')
{
headerNameEndOffset = index;
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
if (ch == ':')
{
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
break;
}
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
startOfValue:
numberOfLf = (this.Count == 0 && headerNameEndOffset < 0) ? 1 : 0;
while (index < size && numberOfLf < 2)
{
ch = (char)byteBuffer[index];
if (ch <= ' ')
{
if (ch == '\n')
{
numberOfLf++;
if (numberOfLf == 1)
{
if (index + 1 == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
spaceAfterLf = (char)byteBuffer[index + 1] == ' ' || (char)byteBuffer[index + 1] == '\t';
}
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (numberOfLf == 2 || (numberOfLf == 1 && !spaceAfterLf))
{
goto addHeader;
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
headerValueStartOffset = index;
while (index < size)
{
ch = (char)byteBuffer[index];
if (ch != '\n')
{
if (ch > ' ')
{
headerValueEndOffset = index;
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (index == size)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
numberOfLf = 0;
while (index < size && numberOfLf < 2)
{
ch = (char)byteBuffer[index];
if (ch == '\r' || ch == '\n')
{
if (ch == '\n')
{
numberOfLf++;
}
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
}
else
{
break;
}
}
if (index == size && numberOfLf < 2)
{
parseStatus = DataParseStatus.NeedMoreData;
goto quit;
}
addHeader:
if (headerValueStartOffset >= 0 && headerValueStartOffset > headerNameEndOffset && headerValueEndOffset >= headerValueStartOffset)
{
headerValue = System.Text.Encoding.UTF8.GetString(byteBuffer, headerValueStartOffset, headerValueEndOffset - headerValueStartOffset + 1);
}
headerMultiLineValue = (headerMultiLineValue == null ? headerValue : headerMultiLineValue + " " + headerValue);
if (index < size && numberOfLf == 1)
{
ch = (char)byteBuffer[index];
if (ch == ' ' || ch == '\t')
{
++index;
if (maximumResponseHeadersLength >= 0 && ++localTotalResponseHeadersLength >= maximumResponseHeadersLength)
{
parseStatus = DataParseStatus.DataTooBig;
goto quit;
}
goto startOfValue;
}
}
if (headerNameStartOffset >= 0 && headerNameEndOffset >= headerNameStartOffset)
{
headerName = System.Text.Encoding.UTF8.GetString(byteBuffer, headerNameStartOffset, headerNameEndOffset - headerNameStartOffset + 1);
}
if (headerName.Length > 0)
{
this.Add(headerName, headerMultiLineValue);
}
totalResponseHeadersLength = localTotalResponseHeadersLength;
unparsed = index;
if (numberOfLf == 2)
{
parseStatus = DataParseStatus.Done;
goto quit;
}
}
quit:
if (parseStatus == DataParseStatus.Invalid)
{
parseError.Section = WebParseErrorSection.ResponseHeader;
parseError.Code = parseErrorCode;
}
return(parseStatus);
}
