public void Reset()
{
FrameRequestHeaders?.Reset();
FrameResponseHeaders?.Reset();
_onStarting = null;
_onCompleted = null;
_requestProcessingStatus = RequestProcessingStatus.RequestPending;
_keepAlive = false;
_autoChunk = false;
_applicationException = null;
ResetFeatureCollection();
Scheme = null;
Method = null;
PathBase = null;
Path = null;
QueryString = null;
_httpVersion = HttpVersionType.Unset;
StatusCode = 200;
ReasonPhrase = null;
RemoteIpAddress = RemoteEndPoint?.Address;
RemotePort = RemoteEndPoint?.Port ?? 0;
LocalIpAddress = LocalEndPoint?.Address;
LocalPort = LocalEndPoint?.Port ?? 0;
ConnectionIdFeature = ConnectionId;
PrepareRequest?.Invoke(this);
_manuallySetRequestAbortToken = null;
_abortedCts = null;
}
public static MessageBody For(
HttpVersion httpVersion,
FrameRequestHeaders headers,
Frame context)
{
// see also http://tools.ietf.org/html/rfc2616#section-4.4
var keepAlive = httpVersion != HttpVersion.Http10;
var connection = headers.HeaderConnection;
if (connection.Count > 0)
{
var connectionOptions = FrameHeaders.ParseConnection(connection);
if ((connectionOptions & ConnectionOptions.Upgrade) == ConnectionOptions.Upgrade)
{
return(new ForRemainingData(true, context));
}
keepAlive = (connectionOptions & ConnectionOptions.KeepAlive) == ConnectionOptions.KeepAlive;
}
var transferEncoding = headers.HeaderTransferEncoding;
if (transferEncoding.Count > 0)
{
var transferCoding = FrameHeaders.GetFinalTransferCoding(headers.HeaderTransferEncoding);
// https://tools.ietf.org/html/rfc7230#section-3.3.3
// If a Transfer-Encoding header field
// is present in a request and the chunked transfer coding is not
// the final encoding, the message body length cannot be determined
// reliably; the server MUST respond with the 400 (Bad Request)
// status code and then close the connection.
if (transferCoding != TransferCoding.Chunked)
{
context.RejectRequest(RequestRejectionReason.FinalTransferCodingNotChunked, transferEncoding.ToString());
}
return(new ForChunkedEncoding(keepAlive, headers, context));
}
var unparsedContentLength = headers.HeaderContentLength;
if (unparsedContentLength.Count > 0)
{
try
{
var contentLength = FrameHeaders.ParseContentLength(unparsedContentLength);
return(new ForContentLength(keepAlive, contentLength, context));
}
catch (InvalidOperationException)
{
context.RejectRequest(RequestRejectionReason.InvalidContentLength, unparsedContentLength);
}
}
// Avoid slowing down most common case
if (!object.ReferenceEquals(context.Method, HttpMethods.Get))
{
// If we got here, request contains no Content-Length or Transfer-Encoding header.
// Reject with 411 Length Required.
if (HttpMethods.IsPost(context.Method) || HttpMethods.IsPut(context.Method))
{
var requestRejectionReason = httpVersion == HttpVersion.Http11 ? RequestRejectionReason.LengthRequired : RequestRejectionReason.LengthRequiredHttp10;
context.RejectRequest(requestRejectionReason, context.Method);
}
}
return(new ForContentLength(keepAlive, 0, context));
}
public bool TakeMessageHeaders(SocketInput input, FrameRequestHeaders requestHeaders)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
while (!scan.IsEnd)
{
var ch = scan.Peek();
if (ch == -1)
{
return(false);
}
else if (ch == '\r')
{
// Check for final CRLF.
scan.Take();
ch = scan.Take();
if (ch == -1)
{
return(false);
}
else if (ch == '\n')
{
consumed = scan;
return(true);
}
// Headers don't end in CRLF line.
RejectRequest("Headers corrupted, invalid header sequence.");
}
else if (ch == ' ' || ch == '\t')
{
RejectRequest("Header line must not start with whitespace.");
}
var beginName = scan;
if (scan.Seek(ref _vectorColons, ref _vectorCRs) == -1)
{
return(false);
}
var endName = scan;
ch = scan.Take();
if (ch != ':')
{
RejectRequest("No ':' character found in header line.");
}
var validateName = beginName;
if (validateName.Seek(ref _vectorSpaces, ref _vectorTabs, ref _vectorColons) != ':')
{
RejectRequest("Whitespace is not allowed in header name.");
}
var beginValue = scan;
ch = scan.Peek();
if (ch == -1)
{
return(false);
}
// Skip header value leading whitespace.
while (ch == ' ' || ch == '\t')
{
scan.Take();
beginValue = scan;
ch = scan.Peek();
if (ch == -1)
{
return(false);
}
}
scan = beginValue;
if (scan.Seek(ref _vectorCRs) == -1)
{
// no "\r" in sight, burn used bytes and go back to await more data
return(false);
}
scan.Take(); // we know this is '\r'
ch = scan.Take(); // expecting '\n'
if (ch == -1)
{
return(false);
}
else if (ch != '\n')
{
RejectRequest("Header line must end in CRLF; only CR found.");
}
var next = scan.Peek();
if (next == -1)
{
return(false);
}
else if (next == ' ' || next == '\t')
{
// From https://tools.ietf.org/html/rfc7230#section-3.2.4:
//
// Historically, HTTP header field values could be extended over
// multiple lines by preceding each extra line with at least one space
// or horizontal tab (obs-fold). This specification deprecates such
// line folding except within the message/http media type
// (Section 8.3.1). A sender MUST NOT generate a message that includes
// line folding (i.e., that has any field-value that contains a match to
// the obs-fold rule) unless the message is intended for packaging
// within the message/http media type.
//
// A server that receives an obs-fold in a request message that is not
// within a message/http container MUST either reject the message by
// sending a 400 (Bad Request), preferably with a representation
// explaining that obsolete line folding is unacceptable, or replace
// each received obs-fold with one or more SP octets prior to
// interpreting the field value or forwarding the message downstream.
RejectRequest("Header value line folding not supported.");
}
// Trim trailing whitespace from header value by repeatedly advancing to next
// whitespace or CR.
//
// - If CR is found, this is the end of the header value.
// - If whitespace is found, this is the _tentative_ end of the header value.
// If non-whitespace is found after it and it's not CR, seek again to the next
// whitespace or CR for a new (possibly tentative) end of value.
var ws = beginValue;
var endValue = scan;
do
{
ws.Seek(ref _vectorSpaces, ref _vectorTabs, ref _vectorCRs);
endValue = ws;
ch = ws.Take();
while (ch == ' ' || ch == '\t')
{
ch = ws.Take();
}
} while (ch != '\r');
var name = beginName.GetArraySegment(endName);
var value = beginValue.GetAsciiString(endValue);
consumed = scan;
requestHeaders.Append(name.Array, name.Offset, name.Count, value);
}
return(false);
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
public ForChunkedEncoding(bool keepAlive, FrameRequestHeaders headers, Frame context)
: base(context)
{
RequestKeepAlive = keepAlive;
_requestHeaders = headers;
}