Add InfoPacket and BandwidthUpdate structs for cross platform usage

network/packet/bandwidth.go

@@ -0,0 +1,35 @@
+package packet
+
+import "fmt"
+
+// BandwidthUpdate holds an update to the seen bandwidth of a connection.
+type BandwidthUpdate struct {
+	ConnID    string
+	RecvBytes uint64
+	SentBytes uint64
+	Method    BandwidthUpdateMethod
+}
+
+// BandwidthUpdateMethod defines how the bandwidth data of a bandwidth update should be interpreted.
+type BandwidthUpdateMethod uint8
+
+// Bandwidth Update Methods.
+const (
+	Absolute BandwidthUpdateMethod = iota
+	Additive
+)
+
+func (bu *BandwidthUpdate) String() string {
+	return fmt.Sprintf("%s: %dB recv | %dB sent [%s]", bu.ConnID, bu.RecvBytes, bu.SentBytes, bu.Method)
+}
+
+func (bum BandwidthUpdateMethod) String() string {
+	switch bum {
+	case Absolute:
+		return "absolute"
+	case Additive:
+		return "additive"
+	default:
+		return "unknown"
+	}
+}