Disable protocol tracing by default

src/syndicate/relay.nim

@@ -5,6 +5,11 @@ import std/[asyncdispatch, options, tables]
 import preserves, preserves/parse
 import ./actors, ./dataspaces, ./protocols/[protocol, sturdy]
 
+when defined(traceSyndicate):
+  template trace(args: varargs[untyped]): untyped = echo(args)
+else:
+  template trace(args: varargs[untyped]): untyped = discard
+
 type Oid = sturdy.Oid
 
 type
@@ -152,7 +157,7 @@ proc send(r: Relay; rOid: protocol.Oid; m: Event) =
         var pkt = $Packet(
           orKind: PacketKind.Turn,
           turn: move r.pendingTurn)
-        echo "C: ", pkt
+        trace "C: ", pkt
         #asyncCheck(turn, r.send(encode pkt))
         asyncCheck(turn, r.send(cast[seq[byte]](pkt)))
   r.pendingTurn.add TurnEvent(oid: rOid, event: m)
@@ -281,7 +286,7 @@ proc dispatch(relay: Relay; v: Preserve[WireRef]) =
 
 proc recv(relay: Relay; buf: string) =
   # var pkt = decodePreserves(buf, WireRef)
-  echo "S: ", buf
+  trace "S: ", buf
   var pkt = cast[Preserve[WireRef]](
       parsePreserves(buf, sturdy.WireRef[void]))
     # the compiler cannot convert `Preserve[void]` to `Preserve[WireRef[Ref]]`