transport commons NotImplementedException autoexpandingbufferwritetransport ttransport autoexpandingbuffer buf pos autoexpandingbufferwritetransport initialcapacity growthcoefficient this.buf autoexpandingbuffer initialcapacity growthcoefficient this.pos override close override isopen override ttransportexception override read buf len ttransportexception notimplementedexception override write towrite len ttransportexception buf.resizeifnecessary pos len system.arraycopy towrite buf.array pos len pos len autoexpandingbuffer getbuf buf getpos pos reset pos