PLT-7809: Add support for Kopano Webmeetings WebRTC server (#7590)

* Add support for Kopano Webmeetings WebRTC server

Add an option to select which WebRTC server to use and add support to
use Kopano Webmeetings as backend instead of Janus. If the new
configuration is not set, WebRTC assumes Janus is used as backend.

* Fixup: remove redundant case. default to janus

* Fixup: use GatewayAdminUrl as direct prefix to admin URL entry point

* Fixup: consumeAndClose

1 files changed, 18 insertions, 3 deletions

diff --git a/model/webrtc.go b/model/webrtc.go
index fa15a4b71..3318128fe 100644
--- a/model/webrtc.go
+++ b/model/webrtc.go
@@ -11,19 +11,24 @@ import (
 type WebrtcInfoResponse struct {
 	Token        string `json:"token"`
 	GatewayUrl   string `json:"gateway_url"`
+	GatewayType  string `json:"gateway_type"`
 	StunUri      string `json:"stun_uri,omitempty"`
 	TurnUri      string `json:"turn_uri,omitempty"`
 	TurnPassword string `json:"turn_password,omitempty"`
 	TurnUsername string `json:"turn_username,omitempty"`
 }
 
-type GatewayResponse struct {
+type JanusGatewayResponse struct {
 	Status string `json:"janus"`
 }
 
-func GatewayResponseFromJson(data io.Reader) *GatewayResponse {
+type KopanoWebmeetingsResponse struct {
+	Value string `json:"value"`
+}
+
+func JanusGatewayResponseFromJson(data io.Reader) *JanusGatewayResponse {
 	decoder := json.NewDecoder(data)
-	var o GatewayResponse
+	var o JanusGatewayResponse
 	err := decoder.Decode(&o)
 	if err == nil {
 		return &o
@@ -51,3 +56,13 @@ func WebrtcInfoResponseFromJson(data io.Reader) *WebrtcInfoResponse {
 		return nil
 	}
 }
+
+func KopanoWebmeetingsResponseFromJson(data io.Reader) *KopanoWebmeetingsResponse {
+	decoder := json.NewDecoder(data)
+	var o KopanoWebmeetingsResponse
+	err := decoder.Decode(&o)
+	if err == nil {
+		return &o
+	}
+	return nil
+}