if (body = strstr(message_start, HTTP_CRLF HTTP_CRLF)) {
body += lenof(HTTP_CRLF HTTP_CRLF);
header_length = body - message_start;
if (body = strstr(message_start, HTTP_CRLF HTTP_CRLF)) {
body += lenof(HTTP_CRLF HTTP_CRLF);
header_length = body - message_start;