Args.notNull(params, "HTTP parameters");
this.instream = instream;
this.buffer = new byte[buffersize];
this.bufferpos = 0;
this.bufferlen = 0;
this.linebuffer = new ByteArrayBuffer(buffersize);
final String charset = (String) params.getParameter(CoreProtocolPNames.HTTP_ELEMENT_CHARSET);
this.charset = charset != null ? Charset.forName(charset) : Consts.ASCII;
this.ascii = this.charset.equals(Consts.ASCII);
this.decoder = null;
this.maxLineLen = params.getIntParameter(CoreConnectionPNames.MAX_LINE_LENGTH, -1);