void beginflush()
{
if(writing)return;
write_n=sendbuffer.BeginDequeue();
if(write_n==-1) return;
writing=true;
st.BeginWrite(sendbuffer.GetPointer(write_n), Stream::Callback([this](void* v, Stream* s)
{
sendbuffer.EndDequeue(write_n);
writing=false;
beginflush();
}));
}
void send(const BufferRef& buf)
{
if(buf.Length<=0)return;
int tmp=sendbuffer.BeginAppend();
if(tmp<0)
{
WARN(2,"buffer overrun"); return;
}
Buffer& b=sendbuffer.GetPointer(tmp);
b=Buffer(buf.Length);
memcpy(b.Data, buf.Data, buf.Length);
sendbuffer.EndAppend(tmp);
beginflush();
}
