[18.09] Vendor swarmkit to 6186e40fb04a7681e25a9101dbc7418c37ef0c8b

Signed-off-by: Anshul Pundir <anshul.pundir@docker.com>
Upstream-commit: 46dfcd83bf1bb820840df91629c04c47b32d1e21
Component: engine

components/engine/vendor/github.com/docker/swarmkit/manager/state/raft/transport/transport.go

@@ -4,6 +4,7 @@ package transport
 
 import (
 	"context"
+	"math"
 	"net"
 	"sync"
 	"time"
@@ -354,6 +355,15 @@ func (t *Transport) dial(addr string) (*grpc.ClientConn, error) {
 			return net.DialTimeout("tcp", addr, timeout)
 		}))
 
+	// TODO(dperny): this changes the max received message size for outgoing
+	// client connections. this means if the server sends a message larger than
+	// this, we will still accept and unmarshal it. i'm unsure what the
+	// potential consequences are of setting this to be effectively unbounded,
+	// so after docker/swarmkit#2774 is fixed, we should remove this option
+	grpcOptions = append(grpcOptions, grpc.WithDefaultCallOptions(
+		grpc.MaxCallRecvMsgSize(math.MaxInt32),
+	))
+
 	cc, err := grpc.Dial(addr, grpcOptions...)
 	if err != nil {
 		return nil, err