/// <summary>
/// Tries to parse a chunk size line for the message
/// </summary>
/// <returns></returns>
private bool TryAndParseChunkSizeLine(ref HttpMessage message, HttpMessageProgressEventHandler onProgress, object stateObject)
{
// try and parse a token from the data
HttpByteParserToken token = _parser.GetNextToken();
if (token == null)
{
return(false);
}
// the first line of any message is never empty
if (token.IsEmpty)
{
return(false);
}
// success! this line is a header
string line = token.ToString(HttpUtils.Encoding);
// parse the size line
HttpChunkSizeLine chunkSizeLine = HttpChunkSizeLine.Parse(line);
// create a new chunk
_chunk = new HttpChunk(chunkSizeLine, null);
// change state to processing chunk data
_state = Processing.ChunkData;
return(true);
}
/// <summary>
/// Destroys the internal variables used to read the message
/// </summary>
private void CleanupVars()
{
// reset our internal vars
_chunk = null;
_chunkedBody = null;
_parser = null;
_receivedBytes = null;
_headerOffsetStart = -1;
_headerOffsetEnd = -1;
}
/// <summary>
/// Destroys the internal variables used to read the message
/// </summary>
private void CleanupVars()
{
// reset our internal vars
_chunk = null;
_chunkedBody = null;
_parser = null;
_receivedBytes = null;
_headerOffsetStart = -1;
_headerOffsetEnd = -1;
}
/// <summary>
/// Initializes internal variables used to read the message
/// </summary>
private void InitVars()
{
// reset our internal vars
_state = Processing.FirstLine;
_chunk = null;
_chunkedBody = null;
_parser = new HttpByteParser();
_receivedBytes = null;
_headerOffsetStart = -1;
_headerOffsetEnd = -1;
}
/// <summary>
/// Initializes internal variables used to read the message
/// </summary>
private void InitVars()
{
// reset our internal vars
_state = Processing.FirstLine;
_chunk = null;
_chunkedBody = null;
_parser = new HttpByteParser();
_receivedBytes = null;
_headerOffsetStart = -1;
_headerOffsetEnd = -1;
}
/// <summary>
/// Tries to parse some chunk data for the message
/// </summary>
/// <returns></returns>
private bool TryAndParseChunkData(ref HttpMessage message, HttpMessageProgressEventHandler onProgress, object stateObject)
{
// get bytes, and update the index...
int waitingOn = _chunk.Size;
int received = _receivedBytes.Length - 2 - _parser.Index;
// if we received enough data to pull in a chunk, do that now
if (received >= waitingOn)
{
// copy the end of the data out as chunk data
byte[] data = HttpUtils.Clone(_receivedBytes, _parser.Index, _chunk.Size);
// bump the parser past the end of the next \r\n
_parser.Index += _chunk.Size + 2;
// create a new chunked body
if (_chunkedBody == null)
{
_chunkedBody = new HttpChunkedBody();
}
// assign the data to the chunk
_chunk.Data = data;
// todo:
// add the chunk to the body
_chunkedBody.Chunks.Add(_chunk);
// if the chunk is empty, it's the last chunk
bool empty = _chunk.IsEmpty;
// destroy the chunk
_chunk = null;
if (empty)
{
// change state to processing chunk data
_state = Processing.ChunkTrailerHeaderLine;
}
else
{
// go back to processing a chunk size line
_state = Processing.ChunkSizeLine;
}
return(true);
}
return(false);
}
/// <summary>
/// Sends the body of a chunked transfer-encoded message
/// </summary>
/// <param name="socket"></param>
/// <param name="abortEvent"></param>
/// <param name="message"></param>
internal protected void SendBodyChunked(Socket socket, ManualResetEvent abortEvent, HttpMessage message, HttpMessageProgressEventHandler onProgress, object stateObject)
{
int segmentNumber = 0;
int totalBytesSent = 0;
byte[] body = message.ToByteArray(false /* no headers */, true /* just the body */);
while (true)
{
// if we have sent the entire message then we can abortEvent
if (totalBytesSent > body.Length)
{
break;
}
// start out with a full segment size (this is just the buffer size by which we will send - 8k seems to be really common although i have no idea why other than that it's a power of 2...)
int chunkSize = MAX_SEGMENT_SIZE_CHUNKED;
// adjust how much we need to send to complete the message
if (chunkSize > (body.Length - totalBytesSent))
{
chunkSize = (body.Length - totalBytesSent);
}
// bump up the segment number
segmentNumber++;
// create a chunk of data to send
byte[] bytes = new byte[chunkSize];
Buffer.BlockCopy(body, totalBytesSent, bytes, 0, chunkSize);
// create a chunk around the data
HttpChunk chunk = new HttpChunk(bytes);
// send the data
int bytesSent = HttpUtils.SendBytes(socket, chunk.ToByteArray());
// if any data was sent
if (bytesSent > 0)
{
// figure out how much as data, minus the chunks control chars
int actualBytesSent = bytesSent - chunk.GetNonDataByteCount();
// if the chunksize is zero or less then we'll return what was sent
if (chunkSize > 0)
{
// all other times it'll not count the non data byte count in the chunk
bytesSent = actualBytesSent;
}
}
// tally the number of bytes we have sent
totalBytesSent += bytesSent;
// notify the callback of our progress
this.OnProgress(onProgress, this, new HttpMessageProgressEventArgs(message, false, bytes, totalBytesSent, stateObject));
// clear that buffer immediately
bytes = null;
// see if we have been instructed to abortEvent reading
if (abortEvent != null)
{
if (abortEvent.WaitOne(1, false))
{
throw new HttpMessageWriterAbortedException(message);
}
}
}
}
/// <summary>
/// Removes a chunk from the list
/// </summary>
/// <param name="chunk"></param>
public void Remove(HttpChunk chunk)
{
}
/// <summary>
/// Adds an array of chunks to the list
/// </summary>
/// <param name="chunks"></param>
public void AddRange(HttpChunk[] chunks)
{
foreach(HttpChunk chunk in chunks)
this.Add(chunk);
}
/// <summary>
/// Adds a chunk to the list
/// </summary>
/// <param name="chunk"></param>
public void Add(HttpChunk chunk)
{
base.InnerList.Add(chunk);
}
/// <summary>
/// Removes a chunk from the list
/// </summary>
/// <param name="chunk"></param>
public void Remove(HttpChunk chunk)
{
}
/// <summary>
/// Adds a chunk to the list
/// </summary>
/// <param name="chunk"></param>
public void Add(HttpChunk chunk)
{
base.InnerList.Add(chunk);
}
/// <summary>
/// Sends the body of a chunked transfer-encoded message
/// </summary>
/// <param name="socket"></param>
/// <param name="abortEvent"></param>
/// <param name="message"></param>
internal protected void SendBodyChunked(Socket socket, ManualResetEvent abortEvent, HttpMessage message, HttpMessageProgressEventHandler onProgress, object stateObject)
{
int segmentNumber = 0;
int totalBytesSent = 0;
byte[] body = message.ToByteArray(false /* no headers */, true /* just the body */);
while(true)
{
// if we have sent the entire message then we can abortEvent
if (totalBytesSent > body.Length)
break;
// start out with a full segment size (this is just the buffer size by which we will send - 8k seems to be really common although i have no idea why other than that it's a power of 2...)
int chunkSize = MAX_SEGMENT_SIZE_CHUNKED;
// adjust how much we need to send to complete the message
if (chunkSize > (body.Length - totalBytesSent))
chunkSize = (body.Length - totalBytesSent);
// bump up the segment number
segmentNumber++;
// create a chunk of data to send
byte[] bytes = new byte[chunkSize];
Buffer.BlockCopy(body, totalBytesSent, bytes, 0, chunkSize);
// create a chunk around the data
HttpChunk chunk = new HttpChunk(bytes);
// send the data
int bytesSent = HttpUtils.SendBytes(socket, chunk.ToByteArray());
// if any data was sent
if (bytesSent > 0)
{
// figure out how much as data, minus the chunks control chars
int actualBytesSent = bytesSent - chunk.GetNonDataByteCount();
// if the chunksize is zero or less then we'll return what was sent
if (chunkSize > 0)
// all other times it'll not count the non data byte count in the chunk
bytesSent = actualBytesSent;
}
// tally the number of bytes we have sent
totalBytesSent += bytesSent;
// notify the callback of our progress
this.OnProgress(onProgress, this, new HttpMessageProgressEventArgs(message, false, bytes, totalBytesSent, stateObject));
// clear that buffer immediately
bytes = null;
// see if we have been instructed to abortEvent reading
if (abortEvent != null)
if (abortEvent.WaitOne(1, false))
throw new HttpMessageWriterAbortedException(message);
}
}
/// <summary>
/// Tries to parse some chunk data for the message
/// </summary>
/// <returns></returns>
private bool TryAndParseChunkData(ref HttpMessage message, HttpMessageProgressEventHandler onProgress, object stateObject)
{
// get bytes, and update the index...
int waitingOn = _chunk.Size;
int received = _receivedBytes.Length - 2 - _parser.Index;
// if we received enough data to pull in a chunk, do that now
if (received >= waitingOn)
{
// copy the end of the data out as chunk data
byte[] data = HttpUtils.Clone(_receivedBytes, _parser.Index, _chunk.Size);
// bump the parser past the end of the next \r\n
_parser.Index += _chunk.Size + 2;
// create a new chunked body
if (_chunkedBody == null)
_chunkedBody = new HttpChunkedBody();
// assign the data to the chunk
_chunk.Data = data;
// todo:
// add the chunk to the body
_chunkedBody.Chunks.Add(_chunk);
// if the chunk is empty, it's the last chunk
bool empty = _chunk.IsEmpty;
// destroy the chunk
_chunk = null;
if (empty)
{
// change state to processing chunk data
_state = Processing.ChunkTrailerHeaderLine;
}
else
{
// go back to processing a chunk size line
_state = Processing.ChunkSizeLine;
}
return true;
}
return false;
}
/// <summary>
/// Tries to parse a chunk size line for the message
/// </summary>
/// <returns></returns>
private bool TryAndParseChunkSizeLine(ref HttpMessage message, HttpMessageProgressEventHandler onProgress, object stateObject)
{
// try and parse a token from the data
HttpByteParserToken token = _parser.GetNextToken();
if (token == null)
return false;
// the first line of any message is never empty
if (token.IsEmpty)
return false;
// success! this line is a header
string line = token.ToString(HttpUtils.Encoding);
// parse the size line
HttpChunkSizeLine chunkSizeLine = HttpChunkSizeLine.Parse(line);
// create a new chunk
_chunk = new HttpChunk(chunkSizeLine, null);
// change state to processing chunk data
_state = Processing.ChunkData;
return true;
}
