use smaller buffer sizes for buffered channels

src/yggdrasil/router.go

@@ -41,7 +41,7 @@ type router struct {
 func (r *router) init(core *Core) {
 	r.core = core
 	r.addr = *address_addrForNodeID(&r.core.dht.nodeID)
-	in := make(chan []byte, 1024)                             // TODO something better than this...
+	in := make(chan []byte, 32)                             // TODO something better than this...
 	p := r.core.peers.newPeer(&r.core.boxPub, &r.core.sigPub) //, out, in)
 	p.out = func(packet []byte) {
 		// This is to make very sure it never blocks
@@ -56,8 +56,8 @@ func (r *router) init(core *Core) {
 	}
 	r.in = in
 	r.out = func(packet []byte) { p.handlePacket(packet, nil) } // The caller is responsible for go-ing if it needs to not block
-	recv := make(chan []byte, 1024)
+	recv := make(chan []byte, 32)
-	send := make(chan []byte, 1024)
+	send := make(chan []byte, 32)
 	r.recv = recv
 	r.send = send
 	r.core.tun.recv = recv

src/yggdrasil/session.go

@@ -163,8 +163,8 @@ func (ss *sessions) createSession(theirPermKey *boxPubKey) *sessionInfo {
 	sinfo.myHandle = *newHandle()
 	sinfo.theirAddr = *address_addrForNodeID(getNodeID(&sinfo.theirPermPub))
 	sinfo.theirSubnet = *address_subnetForNodeID(getNodeID(&sinfo.theirPermPub))
-	sinfo.send = make(chan []byte, 1024)
+	sinfo.send = make(chan []byte, 32)
-	sinfo.recv = make(chan *wire_trafficPacket, 1024)
+	sinfo.recv = make(chan *wire_trafficPacket, 32)
 	go sinfo.doWorker()
 	sinfo.time = time.Now()
 	// Do some cleanup

src/yggdrasil/tcp.go

@@ -128,13 +128,13 @@ func (iface *tcpInterface) handler(sock *net.TCPConn) {
 	in := func(bs []byte) {
 		p.handlePacket(bs, linkIn)
 	}
-	out := make(chan []byte, 1024) // TODO? what size makes sense
+	out := make(chan []byte, 32) // TODO? what size makes sense
 	defer close(out)
 	go func() {
 		var stack [][]byte
 		put := func(msg []byte) {
 			stack = append(stack, msg)
-			for len(stack) > 1024 {
+			for len(stack) > 32 {
 				util_putBytes(stack[0])
 				stack = stack[1:]
 			}

src/yggdrasil/udp.go

@@ -167,7 +167,7 @@ func (iface *udpInterface) handleKeys(msg []byte, addr connAddr) {
 			peer:   iface.core.peers.newPeer(&ks.box, &ks.sig),
 			linkIn: make(chan []byte, 1),
 			keysIn: make(chan *udpKeys, 1),
-			out:    make(chan []byte, 1024),
+			out:    make(chan []byte, 32),
 		}
 		/*
 		   conn.in = func (msg []byte) { conn.peer.handlePacket(msg, conn.linkIn) }