Merge "Fix SntpClient to give accurate time info." into froyo

            long receiveTime = readTimeStamp(buffer, RECEIVE_TIME_OFFSET);

            long transmitTime = readTimeStamp(buffer, TRANSMIT_TIME_OFFSET);

            long roundTripTime = responseTicks - requestTicks - (transmitTime - receiveTime);

            long clockOffset = (receiveTime - originateTime) + (transmitTime - responseTime);

            // receiveTime = originateTime + transit + skew

            // responseTime = transmitTime + transit - skew

            // clockOffset = ((receiveTime - originateTime) + (transmitTime - responseTime))/2

            //             = ((originateTime + transit + skew - originateTime) +

            //                (transmitTime - (transmitTime + transit - skew)))/2

            //             = ((transit + skew) + (transmitTime - transmitTime - transit + skew))/2

            //             = (transit + skew - transit + skew)/2

            //             = (2 * skew)/2 = skew

            long clockOffset = ((receiveTime - originateTime) + (transmitTime - responseTime))/2;

            if (Config.LOGD) Log.d(TAG, "round trip: " + roundTripTime + " ms");

            if (Config.LOGD) Log.d(TAG, "clock offset: " + clockOffset + " ms");

            // save our results

            mNtpTime = requestTime + clockOffset;

            mNtpTimeReference = requestTicks;

            // save our results - use the times on this side of the network latency

            // (response rather than request time)

            mNtpTime = responseTime + clockOffset;

            mNtpTimeReference = responseTicks;

            mRoundTripTime = roundTripTime;

        } catch (Exception e) {

            if (Config.LOGD) Log.d(TAG, "request time failed: " + e);