[tor-commits] [snowflake/master] Use chan struct{} instead of chan bool in openChan.

[dcf at torproject.org]

commit a77ae6b771e5550b3a5370f7b1f2c0e434f4e9eb
Author: David Fifield <david at bamsoftware.com>
Date:   Mon Jan 18 03:04:39 2016 -0800

    Use chan struct{} instead of chan bool in openChan.
    
    http://dave.cheney.net/2014/03/25/the-empty-struct
    "...there is one important practical use of empty structs, and that is
    the chan struct{} construct used for signaling between go routines"
---
 client/snowflake.go |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/client/snowflake.go b/client/snowflake.go
index ae87f89..da609b3 100644
--- a/client/snowflake.go
+++ b/client/snowflake.go
@@ -104,7 +104,7 @@ func dialWebRTC(config *webrtc.Configuration, meek *MeekChannel) (
 
 	offerChan := make(chan *webrtc.SessionDescription)
 	errChan := make(chan error)
-	openChan := make(chan bool)
+	openChan := make(chan struct{})
 
 	pc, err := webrtc.NewPeerConnection(config)
 	if err != nil {
@@ -151,7 +151,7 @@ func dialWebRTC(config *webrtc.Configuration, meek *MeekChannel) (
 	}
 	dc.OnOpen = func() {
 		log.Println("OnOpen channel")
-		openChan <- true
+		openChan <- struct{}{}
 	}
 	dc.OnClose = func() {
 		log.Println("OnClose channel")