install go2rtc on bob

installs_on_host/go2rtc/pkg/debug/conn.go

@@ -0,0 +1,47 @@
+package debug
+
+import (
+	"bytes"
+	"math/rand"
+	"net"
+)
+
+type badConn struct {
+	net.Conn
+	delay int
+	buf   []byte
+}
+
+func NewBadConn(conn net.Conn) net.Conn {
+	return &badConn{Conn: conn}
+}
+
+const (
+	missChance  = 0.05
+	delayChance = 0.1
+)
+
+func (c *badConn) Read(b []byte) (n int, err error) {
+	if rand.Float32() < missChance {
+		if _, err = c.Conn.Read(b); err != nil {
+			return
+		}
+		//log.Printf("bad conn: miss")
+	}
+
+	if c.delay > 0 {
+		if c.delay--; c.delay == 0 {
+			n = copy(b, c.buf)
+			return
+		}
+	} else if rand.Float32() < delayChance {
+		if n, err = c.Conn.Read(b); err != nil {
+			return
+		}
+		c.delay = 1 + rand.Intn(5)
+		c.buf = bytes.Clone(b[:n])
+		//log.Printf("bad conn: delay %d", c.delay)
+	}
+
+	return c.Conn.Read(b)
+}

installs_on_host/go2rtc/pkg/debug/debug.go

@@ -0,0 +1,58 @@
+package debug
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/pion/rtp"
+)
+
+func Logger(include func(packet *rtp.Packet) bool) func(packet *rtp.Packet) {
+	var lastTime = time.Now()
+	var lastTS uint32
+
+	var secCnt int
+	var secSize int
+	var secTS uint32
+	var secTime time.Time
+
+	return func(packet *rtp.Packet) {
+		if include != nil && !include(packet) {
+			return
+		}
+
+		now := time.Now()
+
+		fmt.Printf(
+			"%s: size=%6d ts=%10d type=%2d ssrc=%d seq=%5d mark=%t dts=%4d dtime=%3dms\n",
+			now.Format("15:04:05.000"),
+			len(packet.Payload), packet.Timestamp, packet.PayloadType, packet.SSRC, packet.SequenceNumber, packet.Marker,
+			packet.Timestamp-lastTS, now.Sub(lastTime).Milliseconds(),
+		)
+
+		lastTS = packet.Timestamp
+		lastTime = now
+
+		if secTS == 0 {
+			secTS = lastTS
+			secTime = now
+			return
+		}
+
+		if dt := now.Sub(secTime); dt > time.Second {
+			fmt.Printf(
+				"%s: size=%6d cnt=%d dts=%d dtime=%3dms\n",
+				now.Format("15:04:05.000"),
+				secSize, secCnt, lastTS-secTS, dt.Milliseconds(),
+			)
+
+			secCnt = 0
+			secSize = 0
+			secTS = lastTS
+			secTime = now
+		}
+
+		secCnt++
+		secSize += len(packet.Payload)
+	}
+}