From f7cb6b996339615df134c04c9cdd4902bfbaae7e Mon Sep 17 00:00:00 2001
From: Brian Tiger Chow <brian.holderchow@gmail.com>
Date: Fri, 5 Dec 2014 22:54:16 -0800
Subject: [PATCH] fix: respect ctx on receive

@jbenet

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>
---
 routing/dht/providers.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/routing/dht/providers.go b/routing/dht/providers.go
index 7f70056d3..0deea6324 100644
--- a/routing/dht/providers.go
+++ b/routing/dht/providers.go
@@ -107,10 +107,15 @@ func (pm *ProviderManager) GetProviders(ctx context.Context, k u.Key) []peer.Pee
 		resp: make(chan []peer.Peer, 1), // buffered to prevent sender from blocking
 	}
 	select {
-	case pm.getprovs <- gp:
-		return <-gp.resp
 	case <-ctx.Done():
 		return nil
+	case pm.getprovs <- gp:
+	}
+	select {
+	case <-ctx.Done():
+		return nil
+	case peers := <-gp.resp:
+		return peers
 	}
 }