/// <summary>
/// Filters the received data.
/// </summary>
/// <param name="data">The received data.</param>
/// <param name="rest">The length of the rest data after filtering.</param>
/// <returns>the received packageInfo instance</returns>
public TPackageInfo Filter(BufferList data, out int rest)
{
rest = 0;
var currentSegment = data.Last;
var readBuffer = currentSegment.Array;
var offset = currentSegment.Offset;
var length = currentSegment.Count;
int parsedLength, pos;
while (m_SpliterFoundCount < m_SpliterCount)
{
pos = readBuffer.SearchMark(offset, length, m_SpliterSearchState, out parsedLength);
if (pos < 0)
{
return(default(TPackageInfo));
}
m_SpliterFoundCount++;
offset += parsedLength;
length -= parsedLength;
}
//Found enougth spliters
data.SetLastItemLength(offset - currentSegment.Offset);
Reset();
rest = length;
return(ResolvePackage(this.GetBufferStream(data)));
}
/// <summary>
/// Filters the received data.
/// </summary>
/// <param name="data">The received data.</param>
/// <param name="rest">The length of the rest data after filtering.</param>
/// <returns>the received packageInfo instance</returns>
public virtual TPackageInfo Filter(BufferList data, out int rest)
{
rest = 0;
var total = data.Total;
//Haven't received a full request package
if (total < m_Size)
{
return(default(TPackageInfo));
}
//There is more data after parse one request
if (total > m_Size)
{
rest = total - m_Size;
data.SetLastItemLength(data.Last.Count - rest);
}
var bufferStream = this.GetBufferStream(data);
if (!CanResolvePackage(bufferStream))
{
return(default(TPackageInfo));
}
return(ResolvePackage(bufferStream));
}
/// <summary>
/// Filters the received data.
/// </summary>
/// <param name="data">The received data.</param>
/// <param name="rest">The length of the rest data after filtering.</param>
/// <returns>the received packageInfo instance</returns>
public TPackageInfo Filter(BufferList data, out int rest)
{
rest = 0;
var current = data.Last;
int prevMatched = m_SearchState.Matched;
int parsedLength;
int result = current.Array.SearchMark(current.Offset, current.Count, m_SearchState, out parsedLength);
if (result < 0) //Not found
{
return(NullPackageInfo);
}
//Found
rest = current.Count - parsedLength;
if (rest > 0)
{
data.SetLastItemLength(parsedLength);
}
return(ResolvePackage(this.GetBufferStream(data)));
}
/// <summary>
/// Filters the received data.
/// </summary>
/// <param name="data">The received data.</param>
/// <param name="rest">The length of the rest data after filtering.</param>
/// <returns>the received packageInfo instance</returns>
public virtual TPackageInfo Filter(BufferList data, out int rest)
{
rest = 0;
int searchEndMarkOffset;
int searchEndMarkLength;
var currentSegment = data.Last;
var readBuffer = currentSegment.Array;
var offset = currentSegment.Offset;
var length = currentSegment.Count;
int totalParsed = 0;
if (!m_FoundBegin)
{
int pos = readBuffer.SearchMark(offset, length, m_BeginSearchState, out totalParsed);
if (pos < 0)
{
//All received data is part of the begin mark
if (m_BeginSearchState.Matched > 0 && data.Total == m_BeginSearchState.Matched)
{
return(default(TPackageInfo));
}
//Invalid data, contains invalid data before the regular begin mark
State = FilterState.Error;
return(default(TPackageInfo));
}
//Found the matched begin mark
if (pos != offset)//But not at the beginning, contains invalid data before the regular begin mark
{
State = FilterState.Error;
return(default(TPackageInfo));
}
//Found start mark, then search end mark
m_FoundBegin = true;
searchEndMarkOffset = offset + totalParsed;
//Reach end
if (offset + length <= searchEndMarkOffset)
{
return(default(TPackageInfo));
}
searchEndMarkLength = offset + length - searchEndMarkOffset;
}
else//Already found begin mark
{
searchEndMarkOffset = offset;
searchEndMarkLength = length;
}
while (true)
{
if (m_packageLen == 0)//未获取包总长度值
{
if (searchEndMarkLength > 0)
{
if (m_packagelenbuffer == null)
{
m_packagelenbuffer = new byte[m_FixedLen];
m_IsReadLen = 0;
}
for (int i = 0; i < searchEndMarkLength; i++)
{
if (m_IsReadLen < m_FixedLen)
{
m_packagelenbuffer[m_IsReadLen] = readBuffer[searchEndMarkOffset + i];
m_IsReadLen++;
}
else
{
break;
}
}
if (m_IsReadLen == m_FixedLen)
{
m_packageLen = BitConverter.ToInt32(m_packagelenbuffer, 0) + 20;
if (m_packageLen > searchEndMarkLength + m_EndSearchState.Mark.Length)
{
return(default(TPackageInfo));
}
}
else
{
return(default(TPackageInfo));
}
}
}
int parsedLength;
var endPos = readBuffer.SearchMark(searchEndMarkOffset, searchEndMarkLength, m_EndSearchState, out parsedLength);
//Haven't found end mark
if (endPos < 0)
{
return(default(TPackageInfo));
}
totalParsed += parsedLength; //include begin mark if the mark is found in this round receiving
var packagelen = data.Total - length + totalParsed;
if (packagelen < m_packageLen)
{
searchEndMarkOffset = endPos + m_EndSearchState.Mark.Length;
searchEndMarkLength = length - totalParsed;
if (searchEndMarkLength == 0)
{
return(default(TPackageInfo));
}
continue;
}
rest = length - totalParsed;
if (rest > 0)
{
data.SetLastItemLength(totalParsed);
}
var packageInfo = ResolvePackage(this.GetBufferStream(data));
if (!ReferenceEquals(packageInfo, default(TPackageInfo)))
{
Reset();
return(packageInfo);
}
if (rest > 0)
{
searchEndMarkOffset = endPos + m_EndSearchState.Mark.Length;
searchEndMarkLength = rest;
continue;
}
//Not found end mark
return(default(TPackageInfo));
}
}
/// <summary>
/// Filters the received data.
/// </summary>
/// <param name="data">The received data.</param>
/// <param name="rest">The length of the rest data after filtering.</param>
/// <returns>the received packageInfo instance</returns>
public virtual TPackageInfo Filter(BufferList data, out int rest)
{
rest = 0;
int searchEndMarkOffset;
int searchEndMarkLength;
var currentSegment = data.Last;
var readBuffer = currentSegment.Array;
var offset = currentSegment.Offset;
var length = currentSegment.Count;
int totalParsed = 0;
if (!m_FoundBegin)
{
int pos = readBuffer.SearchMark(offset, length, m_BeginSearchState, out totalParsed);
if (pos < 0)
{
//All received data is part of the begin mark
if (m_BeginSearchState.Matched > 0 && data.Total == m_BeginSearchState.Matched)
{
return(default(TPackageInfo));
}
//Invalid data, contains invalid data before the regular begin mark
State = FilterState.Error;
return(default(TPackageInfo));
}
//Found the matched begin mark
if (pos != offset)//But not at the beginning, contains invalid data before the regular begin mark
{
State = FilterState.Error;
return(default(TPackageInfo));
}
//Found start mark, then search end mark
m_FoundBegin = true;
searchEndMarkOffset = offset + totalParsed;
//Reach end
if (offset + length <= searchEndMarkOffset)
{
return(default(TPackageInfo));
}
searchEndMarkLength = offset + length - searchEndMarkOffset;
}
else//Already found begin mark
{
searchEndMarkOffset = offset;
searchEndMarkLength = length;
}
while (true)
{
int parsedLength;
var endPos = readBuffer.SearchMark(searchEndMarkOffset, searchEndMarkLength, m_EndSearchState, out parsedLength);
//Haven't found end mark
if (endPos < 0)
{
return(default(TPackageInfo));
}
totalParsed += parsedLength; //include begin mark if the mark is found in this round receiving
rest = length - totalParsed;
data.SetLastItemLength(totalParsed);
var packageInfo = ResolvePackage(data);
if (!ReferenceEquals(packageInfo, default(TPackageInfo)))
{
Reset();
return(packageInfo);
}
if (rest > 0)
{
searchEndMarkOffset = endPos + m_EndSearchState.Mark.Length;
searchEndMarkLength = rest;
continue;
}
//Not found end mark
return(default(TPackageInfo));
}
}
