func (fd *udtFD) setAsyncOpts() error {
if C.udt_setsockopt(fd.sock, 0, C.UDT_RCVTIMEO, unsafe.Pointer(&UDT_RCVTIMEO_MS), C.sizeof_int) != 0 {
return fmt.Errorf("failed to set UDT_RCVTIMEO: %s", lastError())
}
if C.udt_setsockopt(fd.sock, 0, C.UDT_SNDTIMEO, unsafe.Pointer(&UDT_SNDTIMEO_MS), C.sizeof_int) != 0 {
return fmt.Errorf("failed to set UDT_SNDTIMEO: %s", lastError())
}
// full async is off
// options
// falseint := C.int(0)
// // set sending to be async
// if C.udt_setsockopt(fd.sock, 0, C.UDT_SNDSYN, unsafe.Pointer(&falseint), C.sizeof_int) != 0 {
// return fmt.Errorf("failed to set UDT_SNDSYN: %s", lastError())
// }
// // set receiving to be async
// if C.udt_setsockopt(fd.sock, 0, C.UDT_RCVSYN, unsafe.Pointer(&falseint), C.sizeof_int) != 0 {
// return fmt.Errorf("failed to set UDT_RCVSYN: %s", lastError())
// }
return nil
}
func (fd *udtFD) SetWriteDeadline(t time.Time) error {
d := C.int(t.Sub(time.Now()).Nanoseconds() / 1e6)
if C.udt_setsockopt(fd.sock, 0, C.UDT_SNDTIMEO, unsafe.Pointer(&d), C.sizeof_int) != 0 {
return fmt.Errorf("failed to set WriteDeadline: %s", lastError())
}
return nil
}
func (fd *udtFD) setDefaultOpts() error {
// reduce maximum size
if C.udt_setsockopt(fd.sock, 0, C.UDP_RCVBUF, unsafe.Pointer(&UDP_RCVBUF_SIZE), C.sizeof_int) != 0 {
return fmt.Errorf("failed to set UDP_RCVBUF: %d, %s", UDP_RCVBUF_SIZE, lastError())
}
// set UDT_REUSEADDR
trueint := C.int(1)
if C.udt_setsockopt(fd.sock, 0, C.UDT_REUSEADDR, unsafe.Pointer(&trueint), C.sizeof_int) != 0 {
return fmt.Errorf("failed to set UDT_REUSEADDR: %s", lastError())
}
// unset UDT_LINGER
// falseint := C.int(0)
// if C.udt_setsockopt(fd.sock, 0, C.UDT_LINGER, unsafe.Pointer(&falseint), C.sizeof_int) != 0 {
// return fmt.Errorf("failed to set UDT_LINGER: %s", lastError())
// }
return nil
}
func Setsockopt(socket *Socket, option string, value interface{}) (retval int, err error) {
var data []byte
if option != UDT_LINGER {
data, err = getBytes(value)
if err != nil {
return -1, fmt.Errorf("Unable to convert interface to byte array %s", err)
}
}
switch option {
case UDT_MSS:
{
if reflect.TypeOf(value).Kind() != reflect.Uint16 {
return -1, fmt.Errorf("Requires Uint16 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_MSS,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_SNDSYN:
{
if reflect.TypeOf(value).Kind() != reflect.Uint64 {
return -1, fmt.Errorf("Requires Uint64 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_SNDSYN,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_RCVSYN:
{
if reflect.TypeOf(value).Kind() != reflect.Uint64 {
return -1, fmt.Errorf("Requires Uint64 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_RCVSYN,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_CC:
{
return -1, fmt.Errorf("UDT CCC Not implemented.")
}
case UDT_FC:
{
if reflect.TypeOf(value).Kind() != reflect.Uint16 {
return -1, fmt.Errorf("Requires Uint16 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_FC,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_SNDBUF:
{
if reflect.TypeOf(value).Kind() != reflect.Uint16 {
return -1, fmt.Errorf("Requires Uint16 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_SNDBUF,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_RCVBUF:
{
if reflect.TypeOf(value).Kind() != reflect.Uint16 {
return -1, fmt.Errorf("Requires Uint16 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_RCVBUF,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDP_SNDBUF:
{
if reflect.TypeOf(value).Kind() != reflect.Uint16 {
return -1, fmt.Errorf("Requires Uint16 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDP_SNDBUF,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDP_RCVBUF:
{
if reflect.TypeOf(value).Kind() != reflect.Uint16 {
return -1, fmt.Errorf("Requires Uint16 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDP_RCVBUF,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_LINGER:
{
var clingerin Linger = value.(Linger)
var clinger C.struct_linger
clinger.l_onoff = C.int(clingerin.l_onoff)
clinger.l_linger = C.int(clingerin.l_linger)
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_LINGER,
unsafe.Pointer(&clinger), C.int(unsafe.Sizeof(clinger))))
}
case UDT_RENDEZVOUS:
{
if reflect.TypeOf(value).Kind() != reflect.Uint64 {
return -1, fmt.Errorf("Requires Uint64 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_RENDEZVOUS,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_REUSEADDR:
{
if reflect.TypeOf(value).Kind() != reflect.Uint64 {
return -1, fmt.Errorf("Requires Uint64 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_REUSEADDR,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
case UDT_MAXBW:
{
if reflect.TypeOf(value).Kind() != reflect.Uint64 {
return -1, fmt.Errorf("Requires Uint64 type")
}
retval = int(C.udt_setsockopt(socket.sock, C.int(0), C.UDT_UDT_MAXBW,
unsafe.Pointer(&data[0]), C.int(len(data))))
}
default:
{
return -1, fmt.Errorf("Invalid option %s", option)
}
}
if retval < 0 {
return retval, udtErrDesc("Unable set option")
}
return
}