internal WebHeaderCollection WriteHeadersTo(MemoryStream destination)
{
var headers = new WebHeaderCollection (HttpHeaderType.Response, true);
if (_headers != null)
headers.Add (_headers);
if (_contentType != null) {
var type = _contentType.IndexOf ("charset=", StringComparison.Ordinal) == -1 &&
_contentEncoding != null
? String.Format ("{0}; charset={1}", _contentType, _contentEncoding.WebName)
: _contentType;
headers.InternalSet ("Content-Type", type, true);
}
if (headers["Server"] == null)
headers.InternalSet("Server", "DiPS Service/1.00", true);
var prov = CultureInfo.InvariantCulture;
if (headers["Date"] == null)
headers.InternalSet ("Date", DateTime.UtcNow.ToString ("r", prov), true);
if (!_sendChunked)
headers.InternalSet ("Content-Length", _contentLength.ToString (prov), true);
else
headers.InternalSet ("Transfer-Encoding", "chunked", true);
/*
* Apache forces closing the connection for these status codes:
* - 400 Bad Request
* - 408 Request Timeout
* - 411 Length Required
* - 413 Request Entity Too Large
* - 414 Request-Uri Too Long
* - 500 Internal Server Error
* - 503 Service Unavailable
*/
var closeConn = !_context.Request.KeepAlive ||
!_keepAlive ||
_statusCode == 400 ||
_statusCode == 408 ||
_statusCode == 411 ||
_statusCode == 413 ||
_statusCode == 414 ||
_statusCode == 500 ||
_statusCode == 503;
var reuses = _context.Connection.Reuses;
if (closeConn || reuses >= 100) {
headers.InternalSet ("Connection", "close", true);
}
else {
headers.InternalSet (
"Keep-Alive", String.Format ("timeout=15,max={0}", 100 - reuses), true);
if (_context.Request.ProtocolVersion < HttpVersion.Version11)
headers.InternalSet ("Connection", "keep-alive", true);
}
if (_location != null)
headers.InternalSet ("Location", _location, true);
if (_cookies != null)
foreach (Cookie cookie in _cookies)
headers.InternalSet ("Set-Cookie", cookie.ToResponseString (), true);
var enc = _contentEncoding ?? Encoding.Default;
var writer = new StreamWriter (destination, enc, 256);
writer.Write ("HTTP/{0} {1} {2}\r\n", _version, _statusCode, _statusDescription);
writer.Write (headers.ToStringMultiValue (true));
writer.Flush ();
// Assumes that the destination was at position 0.
destination.Position = enc.CodePage == 65001 ? 3 : enc.GetPreamble ().Length;
return headers;
}
internal static HttpRequest Parse(string[] headerParts)
{
var requestLine = headerParts[0].Split (new[] { ' ' }, 3);
if (requestLine.Length != 3)
throw new ArgumentException ("Invalid request line: " + headerParts[0]);
var headers = new WebHeaderCollection ();
for (int i = 1; i < headerParts.Length; i++)
headers.InternalSet (headerParts[i], false);
return new HttpRequest (
requestLine[0], requestLine[1], new Version (requestLine[2].Substring (5)), headers);
}