From c5b83d8913d73ea58ff9437c41bf6bd0c6839ad0 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 16 Mar 2017 13:50:01 +0100
Subject: copyPaths(): Use queryValidPaths() to reduce SSH latency

---
 src/libstore/legacy-ssh-store.cc | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/libstore/legacy-ssh-store.cc')

diff --git a/src/libstore/legacy-ssh-store.cc b/src/libstore/legacy-ssh-store.cc
index 1a933259b5..84bf0f727f 100644
--- a/src/libstore/legacy-ssh-store.cc
+++ b/src/libstore/legacy-ssh-store.cc
@@ -226,6 +226,19 @@ struct LegacySSHStore : public Store
         out.insert(res.begin(), res.end());
     }
 
+    PathSet queryValidPaths(const PathSet & paths, bool maybeSubstitute = false) override
+    {
+        auto conn(connections->get());
+
+        conn->to
+            << cmdQueryValidPaths
+            << false // lock
+            << maybeSubstitute
+            << paths;
+        conn->to.flush();
+
+        return readStorePaths<PathSet>(*this, conn->from);
+    }
 };
 
 static RegisterStoreImplementation regStore([](
-- 
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