// Token: 0x060017DA RID: 6106 RVA: 0x00062B9C File Offset: 0x00060D9C
private int ReadXpressBlock(byte[] buf, int off, int len)
{
if (this.m_xpressReadBuf == null)
{
this.m_xpressReadBuf = new byte[65536];
}
this.ReadChunk(this.m_readPacketHeaderBuf, 0, 4);
ushort num = BitConverter.ToUInt16(this.m_readPacketHeaderBuf, 0);
int num2 = (int)(num + 1);
num = BitConverter.ToUInt16(this.m_readPacketHeaderBuf, 2);
int num3 = (int)(num + 1);
this.ReadChunk(this.m_xpressReadBuf, 0, num2);
bool flag;
if (num3 <= len)
{
flag = Xpress.Decompress(this.m_xpressReadBuf, 0, num2, buf, off, num3);
}
else
{
if (this.m_decompressBuf == null)
{
this.m_decompressBuf = new byte[65536];
}
flag = Xpress.Decompress(this.m_xpressReadBuf, 0, num2, this.m_decompressBuf, 0, num3);
}
if (!flag)
{
NetworkPackagingLayer.Tracer.TraceError((long)this.GetHashCode(), "Decompression failed");
throw new NetworkCorruptDataException(this.PartnerNodeName);
}
ExchangeNetworkPerfmonCounters perfCounters = this.m_netChannel.PerfCounters;
if (perfCounters != null && this.m_netChannel.NetworkPath != null)
{
perfCounters.RecordCompressedDataReceived(num2, num3, this.m_netChannel.NetworkPath.Purpose);
}
this.TotalDecompressedBytesReceived += (long)num3;
this.TotalCompressedBytesReceived += (long)num2;
if (num3 <= len)
{
this.m_bytesRemainingToReadInCurrentBlock = 0;
return(num3);
}
this.m_decompressBufContentLen = num3;
this.m_bytesRemainingToReadInCurrentBlock = num3 - len;
Array.Copy(this.m_decompressBuf, 0, buf, off, len);
NetworkPackagingLayer.Tracer.TraceError <int, int>((long)this.GetHashCode(), "NetPkg.ReadXpressBlock: Had to buffer 0x{0:X} uncompressed bytes for the next fetch since only 0x{1:X} were requested.", this.m_bytesRemainingToReadInCurrentBlock, len);
return(len);
}
private QueuedBlockMsg ReadCompressedMsg(NetworkChannel netChan, NetworkChannelMessageHeader msgHdr)
{
byte[] networkReadWorkingBuf = this.m_networkReadWorkingBuf;
BlockModeCompressedDataMsg blockModeCompressedDataMsg = BlockModeCompressedDataMsg.ReadFromNet(netChan, networkReadWorkingBuf, 0);
byte[] array = null;
int num = 0;
int num2 = 0;
if (blockModeCompressedDataMsg.LogDataLength > 0)
{
this.GetAppendSpace(blockModeCompressedDataMsg.LogDataLength);
array = this.m_currentBuffer.Buffer;
num = this.m_currentBuffer.AppendOffset;
int num3 = blockModeCompressedDataMsg.LogDataLength;
int num4 = num;
foreach (int num5 in blockModeCompressedDataMsg.CompressedLengths)
{
num2 += num5;
netChan.Read(networkReadWorkingBuf, 0, num5);
int num6 = Math.Min(num3, 65536);
if (!Xpress.Decompress(networkReadWorkingBuf, 0, num5, array, num4, num6))
{
throw new NetworkCorruptDataException(this.m_netChannel.PartnerNodeName);
}
num3 -= num6;
num4 += num6;
}
this.m_currentBuffer.AppendOffset = num + blockModeCompressedDataMsg.LogDataLength;
}
return(new QueuedBlockMsg(blockModeCompressedDataMsg.EmitContext, array, num, num2)
{
RequestAckCounter = blockModeCompressedDataMsg.RequestAckCounter,
IOBuffer = this.m_currentBuffer
});
}