X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=adapter%2Fvpp_api.go;h=b32f97580b85f8fdbb2c3894f634d0d9891d9bdf;hb=a4112fac7b86fe09650d2bb57969fe46404edd7d;hp=7d1463355dd8e0d287302ed48a86ff7deaaa0556;hpb=c00356ec332203f353fcd5f5992226940d90da92;p=govpp.git

diff --git a/adapter/vpp_api.go b/adapter/vpp_api.go
index 7d14633..b32f975 100644
--- a/adapter/vpp_api.go
+++ b/adapter/vpp_api.go
@@ -16,10 +16,18 @@ package adapter
 
 import (
 	"errors"
+	"fmt"
 )
 
-// ErrNotImplemented is an error returned when missing implementation.
-var ErrNotImplemented = errors.New("not implemented for this OS")
+const (
+	// DefaultBinapiSocket defines a default socket file path for VPP binary API.
+	DefaultBinapiSocket = "/run/vpp/api.sock"
+)
+
+var (
+	// ErrNotImplemented is an error returned when missing implementation.
+	ErrNotImplemented = errors.New("not implemented for this OS")
+)
 
 // MsgCallback defines func signature for message callback.
 type MsgCallback func(msgID uint16, data []byte)
@@ -45,3 +53,14 @@ type VppAPI interface {
 	// WaitReady waits until adapter is ready.
 	WaitReady() error
 }
+
+// UnknownMsgError is the error type usually returned by GetMsgID
+// method of VppAPI. It describes the name and CRC for the unknown message.
+type UnknownMsgError struct {
+	MsgName string
+	MsgCrc  string
+}
+
+func (u *UnknownMsgError) Error() string {
+	return fmt.Sprintf("unknown message: %s_%s", u.MsgName, u.MsgCrc)
+}