[MM-61786] Reduce number of open file descriptors

go.mod

@@ -24,7 +24,7 @@ require (
 	github.com/mattermost/mattermost-plugin-calls/server/public v0.0.3
 	github.com/mattermost/mattermost/server/public v0.1.5-0.20240613070149-4b0ae20ef7b4
 	github.com/mattermost/morph v1.1.0
-	github.com/mattermost/rtcd v0.18.0
+	github.com/mattermost/rtcd v0.18.1-0.20241120195457-0b6a54eba853
 	github.com/mattermost/squirrel v0.2.0
 	github.com/pkg/errors v0.9.1
 	github.com/rudderlabs/analytics-go v3.3.3+incompatible

go.sum

@@ -375,8 +375,8 @@ github.com/mattermost/mattermost/server/public v0.1.5-0.20240613070149-4b0ae20ef
 github.com/mattermost/mattermost/server/public v0.1.5-0.20240613070149-4b0ae20ef7b4/go.mod h1:PDPb/iqzJJ5ZvK/m70oDF55AXN/cOvVFj96Yu4e6j+Q=
 github.com/mattermost/morph v1.1.0 h1:Q9vrJbeM3s2jfweGheq12EFIzdNp9a/6IovcbvOQ6Cw=
 github.com/mattermost/morph v1.1.0/go.mod h1:gD+EaqX2UMyyuzmF4PFh4r33XneQ8Nzi+0E8nXjMa3A=
-github.com/mattermost/rtcd v0.18.0 h1:Wxbl8r8cq8hD4ufg0XUGXM8lHPzxNW73fw4SngCuJ+A=
-github.com/mattermost/rtcd v0.18.0/go.mod h1:FVyFLa+7dWImCZ+0g9xoc/1fMRKMuXs6yAZP1mDKBIg=
+github.com/mattermost/rtcd v0.18.1-0.20241120195457-0b6a54eba853 h1:hkrniAmKlKa46Y/BEkg7oZ3WRSVRMlAWczlMPY4Rcho=
+github.com/mattermost/rtcd v0.18.1-0.20241120195457-0b6a54eba853/go.mod h1:FVyFLa+7dWImCZ+0g9xoc/1fMRKMuXs6yAZP1mDKBIg=
 github.com/mattermost/squirrel v0.2.0 h1:8ZWeyf+MWQ2cL7hu9REZgLtz2IJi51qqZEovI3T3TT8=
 github.com/mattermost/squirrel v0.2.0/go.mod h1:NPPtk+CdpWre4GxMGoOpzEVFVc0ZoEFyJBZGCtn9nSU=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=

server/activate.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"runtime"
 
 	"github.com/mattermost/mattermost-plugin-calls/server/cluster"
 	"github.com/mattermost/mattermost-plugin-calls/server/enterprise"
@@ -157,50 +158,47 @@ func (p *Plugin) OnActivate() (retErr error) {
 		p.LogDebug("rtcd client manager initialized successfully")
 
 		p.rtcdManager = rtcdManager
+	} else {
+		rtcServerConfig := rtc.ServerConfig{
+			ICEAddressUDP:   cfg.UDPServerAddress,
+			ICEAddressTCP:   cfg.TCPServerAddress,
+			ICEPortUDP:      *cfg.UDPServerPort,
+			ICEPortTCP:      *cfg.TCPServerPort,
+			ICEHostOverride: cfg.ICEHostOverride,
+			ICEServers:      rtc.ICEServers(cfg.getICEServers(false)),
+			TURNConfig: rtc.TURNConfig{
+				CredentialsExpirationMinutes: *cfg.TURNCredentialsExpirationMinutes,
+			},
+			EnableIPv6:      *cfg.EnableIPv6,
+			UDPSocketsCount: runtime.NumCPU(),
+		}
+		if *cfg.ServerSideTURN {
+			rtcServerConfig.TURNConfig.StaticAuthSecret = cfg.TURNStaticAuthSecret
+		}
+		if cfg.ICEHostPortOverride != nil {
+			rtcServerConfig.ICEHostPortOverride = rtc.ICEHostPortOverride(fmt.Sprintf("%d", *cfg.ICEHostPortOverride))
+		}
+		rtcServer, err := rtc.NewServer(rtcServerConfig, newLogger(p), p.metrics.RTCMetrics())
+		if err != nil {
+			p.LogError(err.Error())
+			return err
+		}
 
-		go p.clusterEventsHandler()
-
-		p.LogDebug("activated", "ClusterID", status.ClusterId)
-
-		return nil
-	}
+		if err := rtcServer.Start(); err != nil {
+			p.LogError(err.Error())
+			return err
+		}
 
-	rtcServerConfig := rtc.ServerConfig{
-		ICEAddressUDP:   cfg.UDPServerAddress,
-		ICEAddressTCP:   cfg.TCPServerAddress,
-		ICEPortUDP:      *cfg.UDPServerPort,
-		ICEPortTCP:      *cfg.TCPServerPort,
-		ICEHostOverride: cfg.ICEHostOverride,
-		ICEServers:      rtc.ICEServers(cfg.getICEServers(false)),
-		TURNConfig: rtc.TURNConfig{
-			CredentialsExpirationMinutes: *cfg.TURNCredentialsExpirationMinutes,
-		},
-		EnableIPv6: *cfg.EnableIPv6,
-	}
-	if *cfg.ServerSideTURN {
-		rtcServerConfig.TURNConfig.StaticAuthSecret = cfg.TURNStaticAuthSecret
-	}
-	if cfg.ICEHostPortOverride != nil {
-		rtcServerConfig.ICEHostPortOverride = rtc.ICEHostPortOverride(fmt.Sprintf("%d", *cfg.ICEHostPortOverride))
-	}
-	rtcServer, err := rtc.NewServer(rtcServerConfig, newLogger(p), p.metrics.RTCMetrics())
-	if err != nil {
-		p.LogError(err.Error())
-		return err
-	}
+		p.rtcServer = rtcServer
 
-	if err := rtcServer.Start(); err != nil {
-		p.LogError(err.Error())
-		return err
+		go p.wsWriter()
 	}
 
 	p.mut.Lock()
 	p.nodeID = status.ClusterId
-	p.rtcServer = rtcServer
 	p.mut.Unlock()
 
 	go p.clusterEventsHandler()
-	go p.wsWriter()
 
 	p.LogDebug("activated", "ClusterID", status.ClusterId)
 

server/websocket_test.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"runtime"
 	"sync"
 	"testing"
 	"time"
@@ -678,8 +679,9 @@ func TestHandleJoin(t *testing.T) {
 		mock.Anything, mock.Anything, mock.Anything, mock.Anything)
 
 	rtcServer, err := rtc.NewServer(rtc.ServerConfig{
-		ICEPortUDP: 33443,
-		ICEPortTCP: 33443,
+		ICEPortUDP:      33443,
+		ICEPortTCP:      33443,
+		UDPSocketsCount: runtime.NumCPU(),
 	}, newLogger(&p), p.metrics.RTCMetrics())
 	require.NoError(t, err)