1 files changed, 16 insertions(+), 0 deletions(-)

M sdbapi/main.go

@@ 14,11 14,17 @@ import (
 	"api/middlewares"
 	"log"
 	"os"
+	"syscall"
 
 	"github.com/gin-gonic/gin"
 )
 
 func main() {
+	err := setUlimits()
+	if err != nil {
+		log.Fatal("failed to set Ulimits")
+	}
+
 	dbConnectionString := os.Getenv("GORM_DB_STRING")
 
 	db.Connect(dbConnectionString)


@@ 57,3 63,13 @@ func createRouter() *gin.Engine {
 	}
 	return router
 }
+
+// Set NOFILE limit to max, to allow more concurrent websocket connections
+func setUlimits() error {
+	var rlimit syscall.Rlimit
+	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil {
+		return err
+	}
+	rlimit.Cur = rlimit.Max
+	return syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlimit)
+}