sendfile fix: now it tries to send all file and return true/false as result
sendfile fix: now it tries to send all file and return true/false as result

yuriy-chumak/OL,yuriy-chumak/OL,yuriy-chumak/OL,yuriy-chumak/OL,yuriy-chumak/OL,yuriy-chumak/OL