int hostLength = readBuff.getInt(pos);
pos += 4;
byte[] hostBytes = readBuff.getBytes(pos, pos + hostLength);
pos += hostLength;
String host = new String(hostBytes, CharsetUtil.UTF_8);
sender = new ServerID(port, host);
int replyAddressLength = readBuff.getInt(pos);
pos += 4;
if (replyAddressLength > 0) {
byte[] replyAddressBytes = readBuff.getBytes(pos, pos + replyAddressLength);
pos += replyAddressLength;