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[client] Add flag to configure MTU (#4213)

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This commit is contained in:
Viktor Liu
2025-08-26 16:00:14 +02:00
committed by GitHub
parent 9f84165763
commit f063866ce8
54 changed files with 710 additions and 434 deletions
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35
client/internal/connect.go
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@@ -18,6 +18,7 @@ import (
"google.golang.org/grpc/codes"
gstatus "google.golang.org/grpc/status"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/client/iface/device"
"github.com/netbirdio/netbird/client/internal/dns"
"github.com/netbirdio/netbird/client/internal/listener"
@@ -244,7 +245,15 @@ func (c *ConnectClient) run(mobileDependency MobileDependency, runningChan chan
c.statusRecorder.MarkSignalConnected()
relayURLs, token := parseRelayInfo(loginResp)
relayManager := relayClient.NewManager(engineCtx, relayURLs, myPrivateKey.PublicKey().String())
peerConfig := loginResp.GetPeerConfig()
engineConfig, err := createEngineConfig(myPrivateKey, c.config, peerConfig)
if err != nil {
log.Error(err)
return wrapErr(err)
}
relayManager := relayClient.NewManager(engineCtx, relayURLs, myPrivateKey.PublicKey().String(), engineConfig.MTU)
c.statusRecorder.SetRelayMgr(relayManager)
if len(relayURLs) > 0 {
if token != nil {
@@ -259,14 +268,6 @@ func (c *ConnectClient) run(mobileDependency MobileDependency, runningChan chan
}
}
peerConfig := loginResp.GetPeerConfig()
engineConfig, err := createEngineConfig(myPrivateKey, c.config, peerConfig)
if err != nil {
log.Error(err)
return wrapErr(err)
}
checks := loginResp.GetChecks()
c.engineMutex.Lock()
@@ -444,6 +445,8 @@ func createEngineConfig(key wgtypes.Key, config *profilemanager.Config, peerConf
BlockInbound: config.BlockInbound,
LazyConnectionEnabled: config.LazyConnectionEnabled,
MTU: selectMTU(config.MTU, peerConfig.Mtu),
}
if config.PreSharedKey != "" {
@@ -466,6 +469,20 @@ func createEngineConfig(key wgtypes.Key, config *profilemanager.Config, peerConf
return engineConf, nil
}
func selectMTU(localMTU uint16, peerMTU int32) uint16 {
var finalMTU uint16 = iface.DefaultMTU
if localMTU > 0 {
finalMTU = localMTU
} else if peerMTU > 0 {
finalMTU = uint16(peerMTU)
}
// Set global DNS MTU
dns.SetCurrentMTU(finalMTU)
return finalMTU
}
// connectToSignal creates Signal Service client and established a connection
func connectToSignal(ctx context.Context, wtConfig *mgmProto.NetbirdConfig, ourPrivateKey wgtypes.Key) (*signal.GrpcClient, error) {
var sigTLSEnabled bool