client,proxy: add a media channel

client/lib/util.go

@@ -1,7 +1,9 @@
 package snowflake_client
 
 import (
+	"crypto/rand"
 	"log"
+	"math/big"
 	"time"
 )
 
@@ -69,3 +71,12 @@ func (b *bytesSyncLogger) addOutbound(amount int64) {
 func (b *bytesSyncLogger) addInbound(amount int64) {
 	b.inboundChan <- amount
 }
+
+func randomInt(min, max int) int {
+	nBig, err := rand.Int(rand.Reader, big.NewInt(int64(max-min)))
+	if err != nil {
+		panic(err)
+	}
+
+	return int(nBig.Int64()) + min
+}