remove sleepAsync for synchronization

libp2p/stream/bufferstream.nim

@@ -103,14 +103,14 @@ proc pushTo*(s: BufferStream, data: seq[byte]) {.async.} =
   ## is preserved.
   ##
 
+  try:
     await s.lock.acquire()
     var index = 0
     while true:
-
       # give readers a chance free up the buffer
       # it it's full.
       if s.readBuf.len >= s.maxSize:
-      await sleepAsync(10.millis)
+        await sleepAsync(1.millis)
 
       while index < data.len and s.readBuf.len < s.maxSize:
         s.readBuf.addLast(data[index])
@@ -121,11 +121,13 @@ proc pushTo*(s: BufferStream, data: seq[byte]) {.async.} =
         s.readReqs.popFirst().complete()
 
       if index >= data.len:
-      break
+        return
 
       # if we couldn't transfer all the data to the
       # internal buf wait on a read event
       await s.dataReadEvent.wait()
+      s.dataReadEvent.clear()
+  finally:
     s.lock.release()
 
 method read*(s: BufferStream, n = -1): Future[seq[byte]] {.async.} =