func loop(t *testing.T, c *xudp.Connection) {
tick := time.NewTicker(time.Second / 30)
for {
select {
case <-tick.C:
addr, payload, err := c.Recv()
if err != nil {
return
}
if len(payload) != len(Payload) {
t.Errorf("Payload size mismatch: Want %d, have %d",
len(Payload), len(payload))
return
}
for i := range payload {
if Payload[i] != payload[i] {
t.Errorf("Payload mismatch at %d: Want %d, have %d",
i, Payload[i] != payload[i])
return
}
}
err = c.Send(addr, payload)
if err != nil {
return
}
}
}
}
func loop(t *testing.T, c *xudp.Connection) {
for {
addr, payload, err := c.Recv()
if err != nil {
return
}
if len(payload) != len(Payload) {
t.Errorf("Payload size mismatch: Want %d, have %d",
len(Payload), len(payload))
return
}
for i := range payload {
if Payload[i] != payload[i] {
t.Errorf("Payload mismatch at %d: Want %d, have %d",
i, Payload[i] != payload[i])
return
}
}
err = c.Send(addr, payload)
if err != nil {
return
}
}
}
// readLoop reads data from the connection and yields it through the
// returned channel. This allows us to make the read a non-blocking operation.
//
// In this particular program, we do not care about the actual payload.
// Just the sender's address.
func readLoop(c *xudp.Connection) <-chan net.Addr {
ch := make(chan net.Addr)
go func() {
defer close(ch)
for {
address, _, err := c.Recv()
if err != nil {
return
}
ch <- address
}
}()
return ch
}
// The main 'game' loop.
func loop(c *xudp.Connection, address net.Addr) {
// Track average sent/ACK'ed bandwidth
avgSent := make([]float32, 0, 100)
avgAcked := make([]float32, 0, 100)
// Statistics printing ticker.
statTick := time.NewTicker(time.Second)
// Channel which accepts incoming messages.
// This allows us to do non-blocking reads.
recv := readLoop(c)
// If we have an address, we are the 'client' and should
// initiate the echo loop.
if address != nil {
c.Send(address, []byte("Hello"))
}
for {
select {
case <-statTick.C:
stat(&avgSent, &avgAcked)
default:
// Receive next message.
address, ok := <-recv
if !ok {
break
}
// Send a random payload back.
err := c.Send(address, make([]byte, rand.Int31n(int32(c.PayloadSize()))))
if err != nil {
return
}
}
}
}
