public override PipeFilterResult AfterReading(PipeFilterContext filterContext)
{
PipeFilterResult r = new PipeFilterResult(this.Client, null, false);
if (null != _aead)
{
if (!filterContext.Memory.IsEmpty)
{
var cipher = _aead.DecryptTcp(filterContext.Memory.Slice(0, filterContext.MemoryLength));
if (null != cipher && cipher.SignificantLength > 0)
{
r = new PipeFilterResult(this.Client, cipher, true);
}
else
{
_logger?.LogError($"AeadCipherTcpFilter AfterReading no cipher data.");
}
}
else
{
_logger?.LogError($"AeadCipherTcpFilter AfterReading filterContext.Memory.IsEmpty");
}
}
return(r);
}
public override PipeFilterResult BeforeWriting(PipeFilterContext filterContext)
{
PipeFilterResult r = new PipeFilterResult(this.Client, null, false);
if (null != _aead)
{
if (!filterContext.Memory.IsEmpty)
{
var cipher = _aead.EncryptTcp(filterContext.Memory.Slice(0, filterContext.MemoryLength));
r = new PipeFilterResult(this.Client, cipher, true);
}
else
{
_logger?.LogError($"AeadCipherTcpFilter BeforeWriting filterContext.Memory.IsEmpty");
}
}
return(r);
}
public override PipeFilterResult BeforeWriting(PipeFilterContext ctx)
{
PipeFilterResult r = new PipeFilterResult(this.Client, null, false);
if (null != _cipher)
{
if (!ctx.Memory.IsEmpty)
{
var bufferCipher = _cipher.EncryptTcp(ctx.Memory);
r = new PipeFilterResult(this.Client, bufferCipher, true);
}
else
{
_logger?.LogError($"AeadCipherTcpFilter BeforeWriting filterContext.Memory.IsEmpty");
}
}
return(r);
}
