add perNeighborQueue option

If enabled, queue incoming messages to outgoing connections on arrival,
as typical in some GossipSub implementations.

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>

DAS/validator.py

@@ -69,6 +69,7 @@ class Neighbor:
         self.receiving = zeros(blockSize)
         self.received = zeros(blockSize)
         self.sent = zeros(blockSize)
+        self.sendQueue = deque()
 
 
 class Validator:
@@ -86,7 +87,7 @@ class Validator:
         self.format = {"entity": "Val "+str(self.ID)}
         self.block = Block(self.shape.blockSize)
         self.receivedBlock = Block(self.shape.blockSize)
-        self.receivedQueue = []
+        self.receivedQueue = deque()
         self.sendQueue = deque()
         self.amIproposer = amIproposer
         self.logger = logger
@@ -119,6 +120,7 @@ class Validator:
         # TODO: this should be a parameter
         self.bwUplink = 110 if not self.amIproposer else 2200 # approx. 10Mbps and 200Mbps
 
+        self.perNeighborQueue = False # queue incoming messages to outgoing connections on arrival (as typical GossipSub impl)
         self.perNodeQueue = False # keep a global queue of incoming messages for later sequential dispatch
         self.sched = self.nextToSend()
 
@@ -233,6 +235,19 @@ class Validator:
             # add newly received segments to the send queue
             if self.perNeighborQueue:
                 self.sendQueue.extend(self.receivedQueue)
+
+            if self.perNodeQueue:
+                while self.receivedQueue:
+                    (rID, cID) = self.receivedQueue.popleft()
+
+                    if rID in self.rowIDs:
+                        for neigh in self.rowNeighbors[rID].values():
+                            neigh.sendQueue.append(cID)
+
+                    if cID in self.columnIDs:
+                        for neigh in self.columnNeighbors[cID].values():
+                            neigh.sendQueue.append(rID)
+
             self.receivedQueue.clear()
 
     def updateStats(self):
@@ -335,6 +350,25 @@ class Validator:
 
             self.sendQueue.popleft()
 
+        progress = True
+        while (progress):
+            progress = False
+            for rID, neighs in self.rowNeighbors.items():
+                for neigh in neighs.values():
+                    if (neigh.sendQueue):
+                        self.sendSegmentToNeigh(rID, neigh.sendQueue.popleft(), neigh)
+                        progress = True
+                    if self.statsTxInSlot >= self.bwUplink:
+                        return
+
+            for cID, neighs in self.columnNeighbors.items():
+                for neigh in neighs.values():
+                    if (neigh.sendQueue):
+                        self.sendSegmentToNeigh(neigh.sendQueue.popleft(), cID, neigh)
+                        progress = True
+                    if self.statsTxInSlot >= self.bwUplink:
+                        return
+
         tries = 100
         while tries:
             if self.rowIDs: