private bool RequestReceived()
{
#if WINDOWS_UWP
HttpRequest Request = new HttpRequest(this.header, this.dataStream, this.outputStream,
this.client.Information.RemoteAddress.ToString() + ":" + this.client.Information.RemotePort);
#else
HttpRequest Request = new HttpRequest(this.header, this.dataStream, this.stream, this.client.Client.RemoteEndPoint.ToString());
#endif
Request.clientConnection = this;
bool?Queued = this.QueueRequest(Request);
if (Queued.HasValue)
{
if (!Queued.Value && this.dataStream != null)
{
this.dataStream.Dispose();
}
this.header = null;
this.dataStream = null;
this.transferEncoding = null;
return(Queued.Value);
}
else
{
return(true);
}
}
/// <summary>
/// Represets a response of an HTTP client request.
/// </summary>
/// <param name="TransferEncoding">Transfer encoding to use for transfering content to client.</param>
/// <param name="HttpServer">HTTP Server serving the request.</param>
/// <param name="Request">Request being served.</param>
public HttpResponse(TransferEncoding TransferEncoding, HttpServer HttpServer, HttpRequest Request)
: base()
{
this.responseStream = null;
this.clientConnection = null;
this.desiredTransferEncoding = TransferEncoding;
this.httpServer = HttpServer;
this.httpRequest = Request;
if (Request != null && Request.Header.TryGetHeaderField("Connection", out HttpField Field) && Field.Value == "close")
{
this.closeAfterResponse = true;
this.SetHeader("Connection", "close");
}
}
private async Task <bool> BinaryDataReceived(byte[] Data, int Offset, int NrRead)
{
if (this.dataStream is null)
{
HttpFieldTransferEncoding TransferEncoding = this.header.TransferEncoding;
if (!(TransferEncoding is null))
{
if (TransferEncoding.Value == "chunked")
{
this.dataStream = new TemporaryStream();
this.transferEncoding = new ChunkedTransferEncoding(new BinaryOutputStream(this.dataStream), null);
}
else
{
await this.SendResponse(null, null, new HttpException(501, "Not Implemented", "Transfer encoding not implemented."), false);
return(true);
}
}
else
{
HttpFieldContentLength ContentLength = this.header.ContentLength;
if (!(ContentLength is null))
{
long l = ContentLength.ContentLength;
if (l < 0)
{
await this.SendResponse(null, null, new HttpException(400, "Bad Request", "Negative content lengths invalid."), false);
return(true);
}
if (l <= MaxInmemoryMessageSize)
{
this.dataStream = new MemoryStream((int)l);
}
else
{
this.dataStream = new TemporaryStream();
}
this.transferEncoding = new ContentLengthEncoding(new BinaryOutputStream(this.dataStream), l, null);
}
private void StartSendResponse(bool ExpectContent)
{
if (this.transferEncoding == null)
{
if (this.desiredTransferEncoding == null)
{
StringBuilder Output = new StringBuilder();
Output.Append("HTTP/1.1 ");
Output.Append(this.statusCode.ToString());
Output.Append(' ');
Output.Append(this.statusMessage);
Output.Append("\r\nDate: ");
Output.Append(CommonTypes.EncodeRfc822(this.date));
if (this.expires.HasValue)
{
Output.Append("\r\nExpires: ");
Output.Append(CommonTypes.EncodeRfc822(this.expires.Value));
}
Output.Append("\r\nServer: ");
if (string.IsNullOrEmpty(this.server))
{
Output.Append("Waher.Networking.HTTP");
}
else
{
Output.Append(this.server + " (Waher.Networking.HTTP)");
}
if (!string.IsNullOrEmpty(this.contentLanguage))
{
Output.Append("\r\nContent-Language: ");
Output.Append(this.contentLanguage);
}
if (!string.IsNullOrEmpty(this.contentType))
{
Output.Append("\r\nContent-Type: ");
Output.Append(this.contentType);
if (this.contentType.StartsWith("text/") && !this.contentType.Contains("charset="))
{
Output.Append("; charset=");
Output.Append(this.encoding.WebName);
}
}
if ((ExpectContent || this.contentLength.HasValue) &&
((this.statusCode >= 100 && this.statusCode <= 199) || this.statusCode == 204 || this.statusCode == 304))
{
throw new Exception("Content not allowed for status codes " + this.statusCode.ToString());
// When message bodies are required:
// http://stackoverflow.com/questions/299628/is-an-entity-body-allowed-for-an-http-delete-request
}
if (this.contentLength.HasValue)
{
Output.Append("\r\nContent-Length: ");
Output.Append(this.contentLength.Value.ToString());
this.transferEncoding = new ContentLengthEncoding(this.onlyHeader ? Stream.Null : this.responseStream, this.contentLength.Value, this.clientConnection);
}
else if (ExpectContent)
{
Output.Append("\r\nTransfer-Encoding: chunked");
this.transferEncoding = new ChunkedTransferEncoding(this.onlyHeader ? Stream.Null : this.responseStream, DefaultChunkSize, this.clientConnection);
}
else
{
if ((this.statusCode < 100 || this.statusCode > 199) && this.statusCode != 204 && this.statusCode != 304)
{
Output.Append("\r\nContent-Length: 0");
}
this.transferEncoding = new ContentLengthEncoding(this.onlyHeader ? Stream.Null : this.responseStream, 0, this.clientConnection);
}
if (this.customHeaders != null)
{
foreach (KeyValuePair <string, string> P in this.customHeaders)
{
Output.Append("\r\n");
Output.Append(P.Key);
Output.Append(": ");
Output.Append(P.Value);
}
}
if (this.cookies != null)
{
foreach (Cookie Cookie in this.cookies)
{
Output.Append("\r\nSet-Cookie: ");
Output.Append(Cookie.ToString());
}
}
Output.Append("\r\n\r\n");
string Header = Output.ToString();
byte[] HeaderBin = InternetContent.ISO_8859_1.GetBytes(Header);
if (this.responseStream == null || this.clientConnection.Disposed)
{
return;
}
this.responseStream.Write(HeaderBin, 0, HeaderBin.Length);
this.clientConnection.Server.DataTransmitted(HeaderBin.Length);
this.clientConnection.TransmitText(Header);
}
else
{
this.transferEncoding = this.desiredTransferEncoding;
this.transferEncoding.BeforeContent(this, ExpectContent);
}
}
}
private bool BinaryDataReceived(byte[] Data, int Offset, int NrRead)
{
if (this.dataStream == null)
{
HttpFieldTransferEncoding TransferEncoding = this.header.TransferEncoding;
if (TransferEncoding != null)
{
if (TransferEncoding.Value == "chunked")
{
this.dataStream = new TemporaryFile();
this.transferEncoding = new ChunkedTransferEncoding(this.dataStream, null);
}
else
{
this.SendResponse(null, 501, "Not Implemented", false);
return(true);
}
}
else
{
HttpFieldContentLength ContentLength = this.header.ContentLength;
if (ContentLength != null)
{
long l = ContentLength.ContentLength;
if (l < 0)
{
this.SendResponse(null, 400, "Bad Request", false);
return(true);
}
if (l <= MaxInmemoryMessageSize)
{
this.dataStream = new MemoryStream((int)l);
}
else
{
this.dataStream = new TemporaryFile();
}
this.transferEncoding = new ContentLengthEncoding(this.dataStream, l, null);
}
else
{
this.SendResponse(null, 411, "Length Required", true);
return(false);
}
}
}
bool Complete = this.transferEncoding.Decode(Data, Offset, NrRead, out int NrAccepted);
if (this.HasSniffers)
{
if (Offset == 0 && NrAccepted == Data.Length)
{
this.ReceiveBinary(Data);
}
else
{
byte[] Data2 = new byte[NrAccepted];
Array.Copy(Data, Offset, Data2, 0, NrAccepted);
this.ReceiveBinary(Data2);
}
}
if (Complete)
{
if (this.transferEncoding.InvalidEncoding)
{
this.SendResponse(null, 400, "Bad Request", false);
return(true);
}
else
{
Offset += NrAccepted;
NrRead -= NrAccepted;
if (!this.RequestReceived())
{
return(false);
}
if (NrRead > 0)
{
return(this.BinaryHeaderReceived(Data, Offset, NrRead));
}
else
{
return(true);
}
}
}
else if (this.dataStream.Position > MaxEntitySize)
{
this.dataStream.Dispose();
this.dataStream = null;
this.SendResponse(null, 413, "Request Entity Too Large", true);
return(false);
}
else
{
return(true);
}
}
private async Task <bool> BinaryDataReceived(byte[] Data, int Offset, int NrRead)
{
if (this.dataStream is null)
{
HttpFieldTransferEncoding TransferEncoding = this.header.TransferEncoding;
if (TransferEncoding != null)
{
if (TransferEncoding.Value == "chunked")
{
this.dataStream = new TemporaryFile();
this.transferEncoding = new ChunkedTransferEncoding(new BinaryOutputStream(this.dataStream), null);
}
else
{
await this.SendResponse(null, null, new HttpException(501, "Not Implemented", "Transfer encoding not implemented."), false);
return(true);
}
}
else
{
HttpFieldContentLength ContentLength = this.header.ContentLength;
if (ContentLength != null)
{
long l = ContentLength.ContentLength;
if (l < 0)
{
await this.SendResponse(null, null, new HttpException(400, "Bad Request", "Negative content lengths invalid."), false);
return(true);
}
if (l <= MaxInmemoryMessageSize)
{
this.dataStream = new MemoryStream((int)l);
}
else
{
this.dataStream = new TemporaryFile();
}
this.transferEncoding = new ContentLengthEncoding(new BinaryOutputStream(this.dataStream), l, null);
}
else
{
await this.SendResponse(null, null, new HttpException(411, "Length Required", "Content Length required."), true);
return(false);
}
}
}
ulong DecodingResponse = await this.transferEncoding.DecodeAsync(Data, Offset, NrRead);
int NrAccepted = (int)DecodingResponse;
bool Complete = (DecodingResponse & 0x100000000) != 0;
if (this.HasSniffers)
{
if (Offset == 0 && NrAccepted == Data.Length)
{
this.ReceiveBinary(Data);
}
else
{
byte[] Data2 = new byte[NrAccepted];
Array.Copy(Data, Offset, Data2, 0, NrAccepted);
this.ReceiveBinary(Data2);
}
}
if (Complete)
{
if (this.transferEncoding.InvalidEncoding)
{
await this.SendResponse(null, null, new HttpException(400, "Bad Request", "Invalid transfer encoding."), false);
return(true);
}
else if (this.transferEncoding.TransferError)
{
await this.SendResponse(null, null, new HttpException(500, "Internal Server Error", "Unable to transfer content to resource."), false);
return(true);
}
else
{
Offset += NrAccepted;
NrRead -= NrAccepted;
if (!await this.RequestReceived())
{
return(false);
}
if (NrRead > 0)
{
return(await this.BinaryHeaderReceived(Data, Offset, NrRead));
}
else
{
return(true);
}
}
}
else if (this.dataStream.Position > MaxEntitySize)
{
this.dataStream.Dispose();
this.dataStream = null;
await this.SendResponse(null, null, new HttpException(413, "Request Entity Too Large", "Maximum Entity Size: " + MaxEntitySize.ToString()), true);
return(false);
}
else
{
return(true);
}
}
