| public Add ( HttpRequestHeader header, string value ) : void | ||
| header | HttpRequestHeader |
/// One of the |
| value | string |
/// A |
| return | void | |
public static ResponseHandshake Parse(string[] response)
{
var statusLine = response[0].Split(' ');
if (statusLine.Length < 3)
throw new ArgumentException("Invalid status line.");
var reason = new StringBuilder(statusLine[2]);
for (int i = 3; i < statusLine.Length; i++)
reason.AppendFormat(" {0}", statusLine[i]);
var headers = new WebHeaderCollection();
for (int i = 1; i < response.Length; i++)
headers.Add(response[i]);
return new ResponseHandshake {
Headers = headers,
Reason = reason.ToString(),
StatusCode = statusLine[1],
ProtocolVersion = new Version(statusLine[0].Substring(5))
};
}
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", "websocket-sharp/1.0", 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.GetPreamble().Length;
return(headers);
}
public static RequestHandshake Parse(string[] request)
{
var requestLine = request[0].Split(' ');
if (requestLine.Length != 3)
{
var msg = "Invalid HTTP Request-Line: " + request[0];
throw new ArgumentException(msg, "request");
}
var headers = new WebHeaderCollection();
for (int i = 1; i < request.Length; i++)
headers.Add(request[i]);
return new RequestHandshake {
Headers = headers,
HttpMethod = requestLine[0],
RequestUri = requestLine[1].ToUri(),
ProtocolVersion = new Version(requestLine[2].Substring(5))
};
}
private InputChunkState setTrailer(
byte[] buffer, ref int offset, int length
)
{
while (offset < length)
{
if (_trailerState == 4) // CR LF CR LF
{
break;
}
var b = buffer[offset++];
_saved.Append((char)b);
if (_trailerState == 1 || _trailerState == 3) // CR or CR LF CR
{
if (b != 10)
{
throwProtocolViolation("LF is expected.");
}
_trailerState++;
continue;
}
if (b == 13)
{
_trailerState++;
continue;
}
if (b == 10)
{
throwProtocolViolation("LF is unexpected.");
}
_trailerState = 0;
}
var len = _saved.Length;
if (len > 4196)
{
throwProtocolViolation("The trailer is too long.");
}
if (_trailerState < 4)
{
return(InputChunkState.Trailer);
}
if (len == 2)
{
return(InputChunkState.End);
}
_saved.Length = len - 2;
var val = _saved.ToString();
var reader = new StringReader(val);
while (true)
{
var line = reader.ReadLine();
if (line == null || line.Length == 0)
{
break;
}
_headers.Add(line);
}
return(InputChunkState.End);
}
private InputChunkState setTrailer(byte[] buffer, ref int offset, int length)
{
// Check if no trailer.
if (_trailerState == 2 && buffer[offset] == 13 && _saved.Length == 0)
{
offset++;
if (offset < length && buffer[offset] == 10)
{
offset++;
return(InputChunkState.End);
}
offset--;
}
while (offset < length && _trailerState < 4)
{
var b = buffer[offset++];
_saved.Append((char)b);
if (_saved.Length > 4196)
{
throwProtocolViolation("The trailer is too long.");
}
if (_trailerState == 1 || _trailerState == 3)
{
if (b != 10)
{
throwProtocolViolation("LF is expected.");
}
_trailerState++;
continue;
}
if (b == 13)
{
_trailerState++;
continue;
}
if (b == 10)
{
throwProtocolViolation("LF is unexpected.");
}
_trailerState = 0;
}
if (_trailerState < 4)
{
return(InputChunkState.Trailer);
}
_saved.Length -= 2;
var reader = new StringReader(_saved.ToString());
string line;
while ((line = reader.ReadLine()) != null && line.Length > 0)
{
_headers.Add(line);
}
return(InputChunkState.End);
}
State ReadTrailer(byte [] buffer, ref int offset, int size)
{
char c = '\0';
// short path
if (trailerState == 2 && (char)buffer [offset] == '\r' && saved.Length == 0)
{
offset++;
if (offset < size && (char)buffer [offset] == '\n')
{
offset++;
return(State.None);
}
offset--;
}
int st = trailerState;
string stString = "\r\n\r";
while (offset < size && st < 4)
{
c = (char)buffer [offset++];
if ((st == 0 || st == 2) && c == '\r')
{
st++;
continue;
}
if ((st == 1 || st == 3) && c == '\n')
{
st++;
continue;
}
if (st > 0)
{
saved.Append(stString.Substring(0, saved.Length == 0? st - 2: st));
st = 0;
if (saved.Length > 4196)
{
ThrowProtocolViolation("Error reading trailer (too long).");
}
}
}
if (st < 4)
{
trailerState = st;
if (offset < size)
{
ThrowProtocolViolation("Error reading trailer.");
}
return(State.Trailer);
}
var reader = new StringReader(saved.ToString());
string line;
while ((line = reader.ReadLine()) != null && line != "")
{
headers.Add(line);
}
return(State.None);
}
/// <summary>
/// Appends a <paramref name="value"/> to the specified HTTP header sent with the response.
/// </summary>
/// <param name="name">
/// A <see cref="string"/> that represents the name of the header to append
/// <paramref name="value"/> to.
/// </param>
/// <param name="value">
/// A <see cref="string"/> that represents the value to append to the header.
/// </param>
/// <exception cref="ArgumentException">
/// <para>
/// <paramref name="name"/> or <paramref name="value"/> contains invalid characters.
/// </para>
/// <para>
/// -or-
/// </para>
/// <para>
/// <paramref name="name"/> is a restricted header name.
/// </para>
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="name"/> is <see langword="null"/> or empty.
/// </exception>
/// <exception cref="ArgumentOutOfRangeException">
/// The length of <paramref name="value"/> is greater than 65,535 characters.
/// </exception>
/// <exception cref="InvalidOperationException">
/// <para>
/// The response has already been sent.
/// </para>
/// <para>
/// -or-
/// </para>
/// <para>
/// The current headers cannot allow the header to append a value.
/// </para>
/// </exception>
/// <exception cref="ObjectDisposedException">
/// This object is closed.
/// </exception>
public void AppendHeader(string name, string value)
{
checkDisposedOrHeadersSent();
_headers.Add(name, value);
}
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", "websocket-sharp/1.0", 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.GetPreamble ().Length;
return headers;
}