chore(yamux): change closedRemotely from Future into AsyncEvent (#1133)

libp2p/muxers/yamux/yamux.nim

@@ -155,7 +155,7 @@ type
     recvQueue: seq[byte]
     isReset: bool
     remoteReset: bool
-    closedRemotely: Future[void].Raising([])
+    closedRemotely: AsyncEvent
     closedLocally: bool
     receivedData: AsyncEvent
 
@@ -163,7 +163,7 @@ proc `$`(channel: YamuxChannel): string =
   result = if channel.conn.dir == Out: "=> " else: "<= "
   result &= $channel.id
   var s: seq[string] = @[]
-  if channel.closedRemotely.completed():
+  if channel.closedRemotely.isSet():
     s.add("ClosedRemotely")
   if channel.closedLocally:
     s.add("ClosedLocally")
@@ -198,12 +198,12 @@ proc lengthSendQueueWithLimit(channel: YamuxChannel): int =
 
 proc actuallyClose(channel: YamuxChannel) {.async: (raises: []).} =
   if channel.closedLocally and channel.sendQueue.len == 0 and
-      channel.closedRemotely.completed():
+      channel.closedRemotely.isSet():
     await procCall Connection(channel).closeImpl()
 
 proc remoteClosed(channel: YamuxChannel) {.async: (raises: []).} =
-  if not channel.closedRemotely.completed():
-    channel.closedRemotely.complete()
+  if not channel.closedRemotely.isSet():
+    channel.closedRemotely.fire()
     await channel.actuallyClose()
 
 method closeImpl*(channel: YamuxChannel) {.async: (raises: []).} =
@@ -239,7 +239,7 @@ proc reset(channel: YamuxChannel, isLocal: bool = false) {.async: (raises: []).}
       except CancelledError, LPStreamError:
         discard
     await channel.close()
-  if not channel.closedRemotely.completed():
+  if not channel.closedRemotely.isSet():
     await channel.remoteClosed()
   channel.receivedData.fire()
   if not isLocal:
@@ -280,10 +280,10 @@ method readOnce*(
   if channel.recvQueue.len == 0:
     channel.receivedData.clear()
     try: # https://github.com/status-im/nim-chronos/issues/516
-      discard await race(channel.closedRemotely, channel.receivedData.wait())
+      discard await race(channel.closedRemotely.wait(), channel.receivedData.wait())
     except ValueError:
       raiseAssert("Futures list is not empty")
-    if channel.closedRemotely.completed() and channel.recvQueue.len == 0:
+    if channel.closedRemotely.isSet() and channel.recvQueue.len == 0:
       channel.isEof = true
       return
         0 # we return 0 to indicate that the channel is closed for reading from now on
@@ -460,9 +460,6 @@ proc createStream(
   # that the initial recvWindow is 256k.
   # To solve this contradiction, no updateWindow will be sent until
   # recvWindow is less than maxRecvWindow
-  proc newClosedRemotelyFut(): Future[void] {.async: (raises: [], raw: true).} =
-    newFuture[void]()
-
   var stream = YamuxChannel(
     id: id,
     maxRecvWindow: recvWindow,
@@ -473,7 +470,7 @@ proc createStream(
     isSrc: isSrc,
     conn: m.connection,
     receivedData: newAsyncEvent(),
-    closedRemotely: newClosedRemotelyFut(),
+    closedRemotely: newAsyncEvent(),
   )
   stream.objName = "YamuxStream"
   if isSrc: