wathtower/blob+wtserver: support anchor sessions

watchtower/blob/type.go

@@ -138,8 +138,9 @@ func (t Type) String() string {
 // supportedTypes is the set of all configurations known to be supported by the
 // package.
 var supportedTypes = map[Type]struct{}{
-	TypeAltruistCommit: {},
-	TypeRewardCommit:   {},
+	TypeAltruistCommit:       {},
+	TypeRewardCommit:         {},
+	TypeAltruistAnchorCommit: {},
 }
 
 // IsSupportedType returns true if the given type is supported by the package.

watchtower/blob/type_test.go

@@ -123,6 +123,12 @@ func TestSupportedTypes(t *testing.T) {
 		t.Fatalf("default type %s is not supported", blob.TypeAltruistCommit)
 	}
 
+	// Assert that the altruist anchor commit types are supported.
+	if !blob.IsSupportedType(blob.TypeAltruistAnchorCommit) {
+		t.Fatalf("default type %s is not supported",
+			blob.TypeAltruistAnchorCommit)
+	}
+
 	// Assert that all claimed supported types are actually supported.
 	for _, supType := range blob.SupportedTypes() {
 		if blob.IsSupportedType(supType) {