public static RtspResponseMessage Parse(ArraySegment <byte> byteSegment)
{
Debug.Assert(byteSegment.Array != null, "byteSegment.Array != null");
var headersStream = new MemoryStream(byteSegment.Array, byteSegment.Offset, byteSegment.Count, false);
var headersReader = new StreamReader(headersStream);
string startLine = headersReader.ReadLine();
if (startLine == null)
{
throw new RtspParseResponseException("Empty response");
}
string[] tokens = GetFirstLineTokens(startLine);
string rtspVersion = tokens[0];
Version protocolVersion = ParseProtocolVersion(rtspVersion);
RtspStatusCode statusCode = ParseStatusCode(tokens[1]);
NameValueCollection headers = HeadersParser.ParseHeaders(headersReader);
uint cSeq = 0;
string cseqValue = headers.Get("CSEQ");
if (cseqValue != null)
{
uint.TryParse(cseqValue, out cSeq);
}
return(new RtspResponseMessage(statusCode, protocolVersion, cSeq, headers));
}
public override async Task ConnectAsync(CancellationToken token)
{
_commandCounter = 0;
_sessionCookie = Guid.NewGuid().ToString("N").Substring(0, 10);
_streamDataClient = NetworkClientFactory.CreateTcpClient();
Uri connectionUri = ConnectionParameters.ConnectionUri;
int httpPort = connectionUri.Port != -1 ? connectionUri.Port : Constants.DefaultHttpPort;
await _streamDataClient.ConnectAsync(connectionUri.Host, httpPort);
_remoteEndPoint = _streamDataClient.RemoteEndPoint;
_dataNetworkStream = new NetworkStream(_streamDataClient, false);
string request = ComposeGetRequest();
byte[] requestBytes = Encoding.ASCII.GetBytes(request);
await _dataNetworkStream.WriteAsync(requestBytes, 0, requestBytes.Length, token);
var buffer = new byte[Constants.MaxResponseHeadersSize];
int read = await ReadUntilEndOfHeadersAsync(_dataNetworkStream, buffer);
var ms = new MemoryStream(buffer, 0, read);
var streamReader = new StreamReader(ms, Encoding.ASCII);
string responseLine = streamReader.ReadLine();
if (responseLine == null)
{
throw new HttpBadResponseException("Empty response");
}
string[] tokens = responseLine.Split(' ');
if (tokens.Length != 3)
{
throw new HttpRequestException("Invalid first response line");
}
HttpStatusCode statusCode = (HttpStatusCode)int.Parse(tokens[1]);
if (statusCode == HttpStatusCode.OK)
{
return;
}
if (statusCode == HttpStatusCode.Unauthorized &&
!ConnectionParameters.Credentials.IsEmpty() &&
_authenticator == null)
{
NameValueCollection headers = HeadersParser.ParseHeaders(streamReader);
string authenticateHeader = headers.Get(WellKnownHeaders.WwwAuthenticate);
if (string.IsNullOrEmpty(authenticateHeader))
{
throw new HttpBadResponseCodeException(statusCode);
}
_authenticator = Authenticator.Create(ConnectionParameters.Credentials, authenticateHeader);
_streamDataClient.Dispose();
await ConnectAsync(token);
return;
}
throw new HttpBadResponseCodeException(statusCode);
}
