Implemented non-dandelion uploading to improve network performance

src/gossip/__init__.py

@@ -44,7 +44,7 @@ def start_gossip_threads():
     # There is a unified set so gossip logic is not repeated
 
     add_onionr_thread(
-        gossip_server, 1, initial_sleep=0.2)
+        gossip_server, 1, 'gossip_server', initial_sleep=0.2)
 
     threading.Thread(
         target=start_gossip_client, daemon=True).start()

src/gossip/client/__init__.py

@@ -34,7 +34,7 @@ from .announce import do_announce
 from .dandelionstem import stem_out
 from .peerexchange import get_new_peers
 from ..peerset import gossip_peer_set
-from .streamblocks import stream_from_peers
+from .streamblocks import stream_from_peers, stream_to_peer
 
 """
 This program is free software: you can redistribute it and/or modify
@@ -97,16 +97,24 @@ def start_gossip_client():
     # transport plugin handles the new peer
     add_onionr_thread(
         get_new_peers,
-        60, initial_sleep=120)
+        60, 'get_new_peers', initial_sleep=120)
 
     # Start a new thread to stream blocks from peers
     # These blocks are being diffused and are stored in
     # the peer's block database
     add_onionr_thread(
         stream_from_peers,
-        3, initial_sleep=10
+        3, 'stream_from_peers', initial_sleep=10
     )
 
+    # Start a thread to upload blocks, useful for when
+    # connectivity is poor or we are not allowing incoming
+    # connections on any transports
+
+    add_onionr_thread(
+        stream_to_peer,
+        10, 'stream_to_peer', initial_sleep=1)
+
     # Blocks we receive or create through all means except
     # Diffusal are put into block queues, we decide to either
     # stem or diffuse a block from the queue based on the current

src/gossip/client/streamblocks/__init__.py

@@ -0,0 +1,2 @@
+from .streamfrom import stream_from_peers
+from .streamto import stream_to_peer

src/gossip/client/streamblocks/streamfrom.py

@@ -14,7 +14,7 @@ from typing import TYPE_CHECKING, List
 
 import blockdb
 
-from ..constants import BLOCK_ID_SIZE, BLOCK_MAX_SIZE, BLOCK_SIZE_LEN, BLOCK_STREAM_OFFSET_DIGITS
+from ...constants import BLOCK_ID_SIZE, BLOCK_MAX_SIZE, BLOCK_SIZE_LEN, BLOCK_STREAM_OFFSET_DIGITS
 
 if TYPE_CHECKING:
     from socket import socket
@@ -25,8 +25,8 @@ from ordered_set import OrderedSet
 import logger
 
 import onionrblocks
-from ..peerset import gossip_peer_set
-from ..commands import GossipCommands, command_to_byte
+from ...peerset import gossip_peer_set
+from ...commands import GossipCommands, command_to_byte
 
 """
 This program is free software: you can redistribute it and/or modify

src/gossip/client/streamblocks/streamto.py

@@ -0,0 +1,56 @@
+from secrets import SystemRandom
+from time import time
+from typing import List, TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from onionrblocks import Block
+
+from gossip.commands import GossipCommands, command_to_byte
+from blockdb import get_blocks_after_timestamp
+from ...constants import BLOCK_ID_SIZE, BLOCK_SIZE_LEN
+
+from ...peerset import gossip_peer_set
+from ...server import lastincoming
+
+SECS_ELAPSED_NO_INCOMING_BEFORE_STREAM = 3
+
+class SendTimestamp:
+    timestamp: int = 0
+
+def stream_to_peer():
+    if SECS_ELAPSED_NO_INCOMING_BEFORE_STREAM > time() - lastincoming.last_incoming_timestamp:
+        SendTimestamp.timestamp = int(time())
+        return
+    if not len(gossip_peer_set):
+        return 
+    rand = SystemRandom()
+    peer = rand.choice(gossip_peer_set)
+    buffer: List['Block'] = []
+
+    def _do_upload():
+        with peer.get_socket(30) as p:
+            p.sendall(command_to_byte(GossipCommands.PUT_BLOCK_DIFFUSE))
+
+            while len(buffer):
+                try:
+                    block = buffer.pop()
+                except IndexError:
+                    break
+                p.sendall(block.id.zfill(BLOCK_ID_SIZE))
+                if int.from_bytes(p.recv(1), 'big') == 0:
+                    continue
+                block_size = str(len(block.raw)).zfill(BLOCK_SIZE_LEN)
+                p.sendall(block_size.encode('utf-8'))
+                p.sendall(block.raw)
+
+    # Buffer some blocks so we're not streaming too many to one peer
+    # and to efficiently avoid connecting without sending anything
+    buffer_max = 10
+    for block in get_blocks_after_timestamp(SendTimestamp.timestamp):
+        buffer.append(block)
+        if len(buffer) > buffer_max:
+            _do_upload(buffer)
+    if len(buffer):
+        _do_upload()
+
+    SendTimestamp.timestamp = int(time())

src/gossip/commands.py

@@ -6,6 +6,7 @@ class GossipCommands(IntEnum):
     PEER_EXCHANGE = auto()
     STREAM_BLOCKS = auto()
     PUT_BLOCKS = auto()
+    PUT_BLOCK_DIFFUSE = auto()
 
 
 def command_to_byte(cmd: GossipCommands):

src/gossip/server/__init__.py

@@ -1,9 +1,12 @@
 import asyncio
 import traceback
+from time import time
 from typing import TYPE_CHECKING
 from typing import Set, Tuple
 
-from queue import Queue
+from threading import Thread
+
+from onionrblocks import Block
 
 from gossip import constants
 from ..connectpeer import connect_peer
@@ -18,10 +21,13 @@ if TYPE_CHECKING:
     from asyncio import StreamReader, StreamWriter
 
 from filepaths import gossip_server_socket_file
+import blockdb
+from blockdb import add_block_to_db
 from ..commands import GossipCommands
 from ..peerset import gossip_peer_set
 from .acceptstem import accept_stem_blocks
 from .diffuseblocks import diffuse_blocks
+from .import lastincoming
 """
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -52,6 +58,7 @@ def gossip_server():
                 break
             except asyncio.IncompleteReadError:
                 break
+            lastincoming.last_incoming_timestamp = int(time())
 
             cmd = int.from_bytes(cmd, 'big')
             if cmd == b'' or cmd == 0:
@@ -107,6 +114,24 @@ def gossip_server():
                     # Subtract dandelion edge, make sure >=0
                     inbound_dandelion_edge_count[0] = \
                         max(inbound_dandelion_edge_count[0] - 1, 0)
+                case GossipCommands.PUT_BLOCK_DIFFUSE:
+                    async def _get_block_diffused():
+                        block_id = await reader.readexactly(constants.BLOCK_ID_SIZE)
+                        if blockdb.has_block(block_id):
+                            writer.write(int(0).to_bytes(1, 'big'))
+                        else:
+                            
+                            writer.write(int(1).to_bytes(1, 'big'))
+                            await writer.drain()
+                            block_size = int(await asyncio.wait_for(reader.readexactly(constants.BLOCK_SIZE_LEN), 30))
+                            block_data = await reader.readexactly(block_size)
+
+                            Thread(
+                                target=add_block_to_db, 
+                                args=[
+                                    Block(block_id, block_data, auto_verify=True)]
+                                    ).start()
+                    await _get_block_diffused()
             break
 
         await writer.drain()

src/gossip/server/lastincoming.py

@@ -0,0 +1 @@
+last_incoming_timestamp = 0

src/onionrthreads/__init__.py

@@ -27,7 +27,8 @@ def _onionr_thread(func: Callable,
 
 def add_onionr_thread(
         func: Callable,
-        sleep_secs: int, *args, initial_sleep: int = 5, **kwargs):
+        sleep_secs: int, thread_name: str,
+         *args, initial_sleep: int = 5, **kwargs):
     """Spawn a new onionr thread that exits when the main thread does.
 
     Runs in an infinite loop with sleep between calls
@@ -40,6 +41,7 @@ def add_onionr_thread(
                 initial_sleep,
                 *args),
            kwargs=kwargs,
+           name=thread_name,
            daemon=True).start()
 
 

static-data/default-plugins/unixtransport/bootstrap.txt

@@ -1 +1 @@
-/dev/shm/onionr3177415330/gossip-server.sock
+/dev/shm/onionr90775244/gossip-server.sock,/dev/shm/onionr1873728538/gossip-server.sock

static-data/default-plugins/unixtransport/unixbootstrap.py

@@ -58,6 +58,9 @@ def on_bootstrap(api, data=None):
         if address == gossip_server_socket_file or not address:
             continue
 
+        if not os.path.exists(address):
+            continue
+
         # Tell the gossip logic that this peer is ready to connect
         # it will add it to data['peer_set'] if it responds to ping
         Thread(

tests/gossip-unittests/test_server_put_block_diffuse.py

@@ -0,0 +1,58 @@
+import os, uuid
+from queue import Empty
+TEST_DIR = 'testdata/%s-%s' % (str(uuid.uuid4())[:6], os.path.basename(__file__)) + '/'
+print("Test directory:", TEST_DIR)
+os.environ["ONIONR_HOME"] = TEST_DIR
+
+from time import sleep
+from threading import Thread
+import asyncio
+import unittest
+import sys
+sys.path.append(".")
+sys.path.append("src/")
+
+from ordered_set import OrderedSet
+import onionrblocks
+
+import blockdb
+from gossip.server import gossip_server
+from gossip.blockqueues import gossip_block_queues
+from filepaths import gossip_server_socket_file
+
+
+BLOCK_MAX_SIZE = 1024 * 2000
+BLOCK_SIZE_LEN = len(str(BLOCK_MAX_SIZE))
+BLOCK_ID_SIZE = 128
+BLOCK_STREAM_OFFSET_DIGITS = 8
+
+
+class OnionrServerPutBLTestDiffuse(unittest.TestCase):
+
+
+    def test_put_block(self):
+
+        Thread(target=gossip_server, daemon=True).start()
+        sleep(0.01)
+
+        bl = onionrblocks.blockcreator.create_anonvdf_block(
+            b"my test block", b"txt", 2800)
+
+        async def block_put_client():
+            reader, writer = await asyncio.open_unix_connection(
+                gossip_server_socket_file)
+            writer.write(int(6).to_bytes(1, 'big'))
+            writer.write(bl.id)
+
+            self.assertEqual(int.from_bytes(await reader.readexactly(1), 'big'), 1)
+            writer.write(
+                str(len(bl.raw)).zfill(BLOCK_SIZE_LEN).encode('utf-8'))
+            writer.write(bl.raw)
+            sleep(0.2)
+            self.assertIn(bl.id, list([block.id for block in blockdb.get_blocks_after_timestamp(0)]))
+            await writer.drain()
+
+
+        asyncio.run(block_put_client())
+
+unittest.main()