From d1fcb88fdacd3adf3428f5409f93724f57df92ad Mon Sep 17 00:00:00 2001
From: Andrey Borodin <amborodin@acm.org>
Date: Fri, 29 Jan 2021 12:35:50 +0500
Subject: [PATCH] Return ErrorResponse from backend if it preceed transport
 error

---
 errors.go | 1 +
 pgconn.go | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/errors.go b/errors.go
index 7a21af9..c6d7b35 100644
--- a/errors.go
+++ b/errors.go
@@ -49,6 +49,7 @@ type PgError struct {
 	File             string
 	Line             int32
 	Routine          string
+	NetworkError     error
 }
 
 func (pe *PgError) Error() string {
diff --git a/pgconn.go b/pgconn.go
index 751d8fc..6a25edb 100644
--- a/pgconn.go
+++ b/pgconn.go
@@ -1204,7 +1204,11 @@ func (mrr *MultiResultReader) receiveMessage() (pgproto3.BackendMessage, error)
 
 	if err != nil {
 		mrr.pgConn.contextWatcher.Unwatch()
-		mrr.err = err
+		if x, ok := mrr.err.(*PgError); ok {
+			x.NetworkError = err
+		} else {
+			mrr.err = err
+		}
 		mrr.closed = true
 		mrr.pgConn.asyncClose()
 		return nil, mrr.err