From 9247a1e21999fc91b30d7d0b2799e11f207cd255 Mon Sep 17 00:00:00 2001
From: Kevin Seidel <kevin@zahlz.com>
Date: Wed, 14 Mar 2018 10:38:02 +0100
Subject: [PATCH 1/2] Fix cancel via context and respect context deadline

---
 linux/hci/gap.go | 36 ++++++++++++++++++++++--------------
 1 file changed, 22 insertions(+), 14 deletions(-)

diff --git a/linux/hci/gap.go b/linux/hci/gap.go
index d114a0a0..ac5bbb9e 100644
--- a/linux/hci/gap.go
+++ b/linux/hci/gap.go
@@ -206,31 +206,39 @@ func (h *HCI) Dial(ctx context.Context, a ble.Addr) (ble.Client, error) {
 		return nil, err
 	}
 	var tmo <-chan time.Time
-	if h.dialerTmo != time.Duration(0) {
+	if deadline, ok := ctx.Deadline(); ok {
+		tmo = time.After(time.Until(deadline))
+	} else if h.dialerTmo != time.Duration(0) {
 		tmo = time.After(h.dialerTmo)
 	}
 	select {
 	case <-ctx.Done():
-		return nil, ctx.Err()
+		return h.cancelDial()
+	case <-tmo:
+		return h.cancelDial()
 	case <-h.done:
 		return nil, h.err
 	case c := <-h.chMasterConn:
 		return gatt.NewClient(c)
-	case <-tmo:
-		err := h.Send(&h.params.connCancel, nil)
-		if err == nil {
-			// The pending connection was canceled successfully.
-			return nil, fmt.Errorf("connection timed out")
-		}
-		// The connection has been established, the cancel command
-		// failed with ErrDisallowed.
-		if err == ErrDisallowed {
-			return gatt.NewClient(<-h.chMasterConn)
-		}
-		return nil, errors.Wrap(err, "cancel connection failed")
+
 	}
 }
 
+// cancelDial cancels the Dialing
+func (h *HCI) cancelDial() (ble.Client, error) {
+	err := h.Send(&h.params.connCancel, nil)
+	if err == nil {
+		// The pending connection was canceled successfully.
+		return nil, fmt.Errorf("connection canceled")
+	}
+	// The connection has been established, the cancel command
+	// failed with ErrDisallowed.
+	if err == ErrDisallowed {
+		return gatt.NewClient(<-h.chMasterConn)
+	}
+	return nil, errors.Wrap(err, "cancel connection failed")
+}
+
 // Advertise starts advertising.
 func (h *HCI) Advertise() error {
 	h.params.advEnable.AdvertisingEnable = 1

From d6a9d8cbc1621eafba02732d574751d41216027b Mon Sep 17 00:00:00 2001
From: Kevin Seidel <kevin@zahlz.com>
Date: Thu, 15 Mar 2018 17:24:12 +0100
Subject: [PATCH 2/2] Remove timeout overwrite and remove go1.7 from travis

---
 .travis.yml      | 1 -
 linux/hci/gap.go | 5 ++---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 37dfd94c..d9b98257 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,6 @@ os:
         - linux
 
 go:
-        - 1.7
         - 1.8
         - 1.9
         - tip
diff --git a/linux/hci/gap.go b/linux/hci/gap.go
index ac5bbb9e..6bb1f1ea 100644
--- a/linux/hci/gap.go
+++ b/linux/hci/gap.go
@@ -206,11 +206,10 @@ func (h *HCI) Dial(ctx context.Context, a ble.Addr) (ble.Client, error) {
 		return nil, err
 	}
 	var tmo <-chan time.Time
-	if deadline, ok := ctx.Deadline(); ok {
-		tmo = time.After(time.Until(deadline))
-	} else if h.dialerTmo != time.Duration(0) {
+	if h.dialerTmo != time.Duration(0) {
 		tmo = time.After(h.dialerTmo)
 	}
+
 	select {
 	case <-ctx.Done():
 		return h.cancelDial()