forked from ionorg/ion-sfu
/
server.go
134 lines (114 loc) · 2.98 KB
/
server.go
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package server
import (
"context"
"encoding/json"
"fmt"
"github.com/go-logr/logr"
"github.com/pion/ion-sfu/pkg/sfu"
"github.com/pion/webrtc/v3"
"github.com/sourcegraph/jsonrpc2"
)
// Join message sent when initializing a peer connection
type Join struct {
SID string `json:"sid"`
UID string `json:"uid"`
Offer webrtc.SessionDescription `json:"offer"`
Config sfu.JoinConfig `json:"config"`
}
// Negotiation message sent when renegotiating the peer connection
type Negotiation struct {
Desc webrtc.SessionDescription `json:"desc"`
}
// Trickle message sent when renegotiating the peer connection
type Trickle struct {
Target int `json:"target"`
Candidate webrtc.ICECandidateInit `json:"candidate"`
}
type JSONSignal struct {
*sfu.PeerLocal
logr.Logger
}
func NewJSONSignal(p *sfu.PeerLocal, l logr.Logger) *JSONSignal {
return &JSONSignal{p, l}
}
// Handle incoming RPC call events like join, answer, offer and trickle
func (p *JSONSignal) Handle(ctx context.Context, conn *jsonrpc2.Conn, req *jsonrpc2.Request) {
replyError := func(err error) {
_ = conn.ReplyWithError(ctx, req.ID, &jsonrpc2.Error{
Code: 500,
Message: fmt.Sprintf("%s", err),
})
}
switch req.Method {
case "join":
var join Join
err := json.Unmarshal(*req.Params, &join)
if err != nil {
p.Logger.Error(err, "connect: error parsing offer")
replyError(err)
break
}
p.OnOffer = func(offer *webrtc.SessionDescription) {
if err := conn.Notify(ctx, "offer", offer); err != nil {
p.Logger.Error(err, "error sending offer")
}
}
p.OnIceCandidate = func(candidate *webrtc.ICECandidateInit, target int) {
if err := conn.Notify(ctx, "trickle", Trickle{
Candidate: *candidate,
Target: target,
}); err != nil {
p.Logger.Error(err, "error sending ice candidate")
}
}
err = p.Join(join.SID, join.UID, join.Config)
if err != nil {
replyError(err)
break
}
answer, err := p.Answer(join.Offer)
if err != nil {
replyError(err)
break
}
_ = conn.Reply(ctx, req.ID, answer)
case "offer":
var negotiation Negotiation
err := json.Unmarshal(*req.Params, &negotiation)
if err != nil {
p.Logger.Error(err, "connect: error parsing offer")
replyError(err)
break
}
answer, err := p.Answer(negotiation.Desc)
if err != nil {
replyError(err)
break
}
_ = conn.Reply(ctx, req.ID, answer)
case "answer":
var negotiation Negotiation
err := json.Unmarshal(*req.Params, &negotiation)
if err != nil {
p.Logger.Error(err, "connect: error parsing offer")
replyError(err)
break
}
err = p.SetRemoteDescription(negotiation.Desc)
if err != nil {
replyError(err)
}
case "trickle":
var trickle Trickle
err := json.Unmarshal(*req.Params, &trickle)
if err != nil {
p.Logger.Error(err, "connect: error parsing candidate")
replyError(err)
break
}
err = p.Trickle(trickle.Candidate, trickle.Target)
if err != nil {
replyError(err)
}
}
}