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Implement renegotiation in the up direction.

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This commit is contained in:
Juliusz Chroboczek 2020-08-06 23:55:00 +02:00
parent 9506615272
commit 23c4aea58f
2 changed files with 20 additions and 13 deletions
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1
static/sfu.js
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@ -1243,6 +1243,7 @@ async function negotiate(id) {
id: id,
labels: c.labelsByMid,
offer: offer,
renegotiate: true,
});
}

32
webclient.go
View file

@ -209,12 +209,7 @@ func getUpConns(c *webClient) []*rtpUpConnection {
return up
}
func addUpConn(c *webClient, id string) (*rtpUpConnection, error) {
conn, err := newUpConn(c, id)
if err != nil {
return nil, err
}
func addUpConn(c *webClient, id string) (*rtpUpConnection, bool, error) {
c.mu.Lock()
defer c.mu.Unlock()
@ -222,13 +217,17 @@ func addUpConn(c *webClient, id string) (*rtpUpConnection, error) {
c.up = make(map[string]*rtpUpConnection)
}
if c.down != nil && c.down[id] != nil {
conn.pc.Close()
return nil, errors.New("Adding duplicate connection")
return nil, false, errors.New("Adding duplicate connection")
}
old := c.up[id]
if old != nil {
old.pc.Close()
return old, false, nil
}
conn, err := newUpConn(c, id)
if err != nil {
return nil, false, err
}
c.up[id] = conn
@ -237,7 +236,7 @@ func addUpConn(c *webClient, id string) (*rtpUpConnection, error) {
sendICE(c, id, candidate)
})
return conn, nil
return conn, true, nil
}
func delUpConn(c *webClient, id string) bool {
@ -444,11 +443,18 @@ func sendICE(c *webClient, id string, candidate *webrtc.ICECandidate) error {
})
}
func gotOffer(c *webClient, id string, offer webrtc.SessionDescription, labels map[string]string) error {
up, err := addUpConn(c, id)
func gotOffer(c *webClient, id string, offer webrtc.SessionDescription, renegotiate bool, labels map[string]string) error {
if !renegotiate {
// unless the client indicates that this is a compatible
// renegotiation, tear down the existing connection.
delUpConn(c, id)
}
up, _, err := addUpConn(c, id)
if err != nil {
return err
}
if c.username != "" {
up.label = c.username
}
@ -911,7 +917,7 @@ func handleClientMessage(c *webClient, m clientMessage) error {
if m.Offer == nil {
return protocolError("null offer")
}
err := gotOffer(c, m.Id, *m.Offer, m.Labels)
err := gotOffer(c, m.Id, *m.Offer, m.Renegotiate, m.Labels)
if err != nil {
log.Printf("gotOffer: %v", err)
return failConnection(c, m.Id, "negotiation failed")