From c6f704b453cd72734ca03793cd370021f4a39db9 Mon Sep 17 00:00:00 2001
From: Steven Allen <steven@stebalien.com>
Date: Tue, 26 Mar 2019 17:02:04 +0000
Subject: [PATCH] return an error when the API file isn't found

fixes #7


This commit was moved from ipfs/go-ipfs-http-client@897d1b1bcdbf9f6616991366e66ac55e18a99a9c
---
 client/httpapi/api.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/client/httpapi/api.go b/client/httpapi/api.go
index ef6eff3e8..6c41ef3ab 100644
--- a/client/httpapi/api.go
+++ b/client/httpapi/api.go
@@ -1,6 +1,7 @@
 package httpapi
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	gohttp "net/http"
@@ -22,6 +23,9 @@ const (
 	EnvDir          = "IPFS_PATH"
 )
 
+// ErrApiNotFound if we fail to find a running daemon.
+var ErrApiNotFound = errors.New("ipfs api address could not be found")
+
 // HttpApi implements github.com/ipfs/interface-go-ipfs-core/CoreAPI using
 // IPFS HTTP API.
 //
@@ -54,7 +58,7 @@ func NewPathApi(ipfspath string) (*HttpApi, error) {
 	a, err := ApiAddr(ipfspath)
 	if err != nil {
 		if os.IsNotExist(err) {
-			err = nil
+			err = ErrApiNotFound
 		}
 		return nil, err
 	}