private int parseClockSkewOffset(
org.apache.http.HttpResponse response, AmazonServiceException exception) {
Date deviceDate = new Date();
Date serverDate = null;
String serverDateStr = null;
Header[] responseDateHeader = response.getHeaders("Date");
try {
if (responseDateHeader.length == 0) {
// SQS doesn't return Date header
serverDateStr = getServerDateFromException(exception.getMessage());
serverDate = DateUtils.parseCompressedISO8601Date(serverDateStr);
} else {
serverDateStr = responseDateHeader[0].getValue();
serverDate = DateUtils.parseRFC822Date(serverDateStr);
}
} catch (RuntimeException e) {
log.warn("Unable to parse clock skew offset from response: " + serverDateStr, e);
return 0;
}
long diff = deviceDate.getTime() - serverDate.getTime();
return (int) (diff / 1000);
}
