public static async Task <HttpRequestMessage> CreateNewAsync(this HttpRequestMessage me, Stream requestStream, CancellationToken ctsToken = default)
{
// https://tools.ietf.org/html/rfc7230#section-3
// The normal procedure for parsing an HTTP message is to read the
// start - line into a structure, read each header field into a hash table
// by field name until the empty line, and then use the parsed data to
// determine if a message body is expected.If a message body has been
// indicated, then it is read as a stream until an amount of octets
// equal to the message body length is read or the connection is closed.
// https://tools.ietf.org/html/rfc7230#section-3
// All HTTP/ 1.1 messages consist of a start - line followed by a sequence
// of octets in a format similar to the Internet Message Format
// [RFC5322]: zero or more header fields(collectively referred to as
// the "headers" or the "header section"), an empty line indicating the
// end of the header section, and an optional message body.
// HTTP - message = start - line
// * (header - field CRLF )
// CRLF
// [message - body]
var position = 0;
string startLine = await HttpMessageHelper.ReadStartLineAsync(requestStream, ctsToken).ConfigureAwait(false);
position += startLine.Length;
var requestLine = RequestLine.CreateNew(startLine);
var request = new HttpRequestMessage(requestLine.Method, requestLine.URI);
string headers = await HttpMessageHelper.ReadHeadersAsync(requestStream, ctsToken).ConfigureAwait(false);
position += headers.Length + 2;
var headerSection = HeaderSection.CreateNew(headers);
var headerStruct = headerSection.ToHttpRequestHeaders();
HttpMessageHelper.AssertValidHeaders(headerStruct.RequestHeaders, headerStruct.ContentHeaders);
request.Content = await HttpMessageHelper.GetContentAsync(requestStream, headerStruct, ctsToken).ConfigureAwait(false);
HttpMessageHelper.CopyHeaders(headerStruct.RequestHeaders, request.Headers);
if (request.Content != null)
{
HttpMessageHelper.CopyHeaders(headerStruct.ContentHeaders, request.Content.Headers);
}
return(request);
}
