func (fd *udtFD) Read(buf []byte) (readcnt int, err error) {
if err = fd.readLock(); err != nil {
return 0, err
}
defer fd.readUnlock()
readcnt = 0
for {
n := int(C.udt_recv(fd.sock, slice2cbuf(buf[readcnt:]), C.int(len(buf)-readcnt), 0))
if C.int(n) == C.ERROR {
// got problems?
if err = fd.udtIOError(); err != nil {
break
}
// nope, everything's fine. read again.
continue
}
if n > 0 {
readcnt += n
}
if err != nil { // bad things happened
break
}
if n == 0 {
err = io.EOF
}
break // return the data we have.
}
if err != nil && err != io.EOF {
err = &net.OpError{"read", fd.net, fd.laddr, fd.raddr, err}
}
return readcnt, err
}
func Recv(socket *Socket, data *byte, length int) (retval int, err error) {
retval = int(C.udt_recv(socket.sock, (*C.char)(unsafe.Pointer(data)), C.int(length), C.int(0)))
if retval < 0 {
return retval, udtErrDesc("Unable to recive data")
}
return
}
