Files
netbird/client/net/conn.go
Viktor Liu 55126f990c [client] Use native windows sock opts to avoid routing loops (#4314)
- Move `util/grpc` and `util/net` to `client` so `internal` packages can be accessed
 - Add methods to return the next best interface after the NetBird interface.
- Use `IP_UNICAST_IF` sock opt to force the outgoing interface for the NetBird `net.Dialer` and `net.ListenerConfig` to avoid routing loops. The interface is picked by the new route lookup method.
- Some refactoring to avoid import cycles
- Old behavior is available through `NB_USE_LEGACY_ROUTING=true` env var
2025-09-20 09:31:04 +02:00

50 lines
1.2 KiB
Go

//go:build !ios
package net
import (
"io"
"net"
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/net/hooks"
)
// Conn wraps a net.Conn to override the Close method
type Conn struct {
net.Conn
ID hooks.ConnectionID
}
// Close overrides the net.Conn Close method to execute all registered hooks after closing the connection
// Close overrides the net.Conn Close method to execute all registered hooks before closing the connection.
func (c *Conn) Close() error {
return closeConn(c.ID, c.Conn)
}
// TCPConn wraps net.TCPConn to override its Close method to include hook functionality.
type TCPConn struct {
*net.TCPConn
ID hooks.ConnectionID
}
// Close overrides the net.TCPConn Close method to execute all registered hooks before closing the connection.
func (c *TCPConn) Close() error {
return closeConn(c.ID, c.TCPConn)
}
// closeConn is a helper function to close connections and execute close hooks.
func closeConn(id hooks.ConnectionID, conn io.Closer) error {
err := conn.Close()
closeHooks := hooks.GetCloseHooks()
for _, hook := range closeHooks {
if err := hook(id); err != nil {
log.Errorf("Error executing close hook: %v", err)
}
}
return err
}