tun2: pingloop

lib/tun2/server.go

@@ -11,6 +11,7 @@ import (
 	"net"
 	"net/http"
 	"sync"
+	"time"
 
 	"git.xeserv.us/xena/route/database"
 	"github.com/Xe/ln"
@@ -139,6 +140,31 @@ func (s *Server) ListenAndServe() error {
 		}()
 	}
 
+	go func() {
+		for {
+			time.Sleep(5 * time.Second)
+
+			s.connlock.Lock()
+
+			for conn, c := range s.conns {
+				conn.SetDeadline(time.Now().Add(1 * time.Second))
+				req, err := http.NewRequest("GET", "http://backend/health", nil)
+				if err != nil {
+					panic(err)
+				}
+
+				_, err = s.RoundTrip(req)
+				if err != nil {
+					ln.Error(err)
+
+					c.cancel()
+				}
+			}
+
+			s.connlock.Unlock()
+		}
+	}()
+
 	return nil
 }