add

Author: vladopajic

lsquic/connectionmanager.nim

@@ -52,9 +52,9 @@ proc startSending*(connman: ConnectionManager) =
     try:
       let datagrams = await connman.outgoing.get()
       let req = datagrams.mapIt((it.taddr, it.data))
-      # echo "111111111 ", req.len
-      await connman.udp.sendTo(req)
-      # echo "2222222"
+      discard connman.udp.sendTo(req)
+    except CancelledError as e:
+      raise e
     except CatchableError as e:
       debug "Failed to send datagram", errorMsg = e.msg
 

lsquic/context/io.nim

@@ -55,7 +55,9 @@ proc sendPacketsOut*(
         continue
       copyMem(addr data[currLen], currIov.iov_base, currIov.iov_len)
       currLen += currIov.iov_len.int
-      
+    
+    if data.len == 0:
+      continue
     let taddr = toTransportAddress(curr.dest_sa)
     let datagram = Datagram(data: data, ecn: curr.ecn, taddr: taddr)
     quicCtx.outgoing.put(datagram)