lots of work on gossip

src/__init__.py

@@ -8,9 +8,10 @@ Run with 'help' for usage.
 # Enable pyjion if we can because why not
 pyjion_enabled = False
 try:
-    import pyjion
-    pyjion.enable()
-    pyjion_enabled = True
+    pass
+    #import pyjion
+    #pyjion.enable()
+    #pyjion_enabled = True
 except ImportError:
     pass
 

src/gossip/__init__.py

@@ -1,6 +1,6 @@
 import threading
 from time import sleep
-from typing import TYPE_CHECKING, Set
+from typing import TYPE_CHECKING, Set, List
 from os import urandom
 import queue
 
@@ -17,6 +17,7 @@ from .connectpeer import connect_peer
 from .client import gossip_client
 from .server import gossip_server
 from .commands import GossipCommands
+from .constants import BOOTSTRAP_ATTEMPTS
 """
 Onionr uses a flavor of Dandelion++ epidemic routing
 
@@ -39,19 +40,19 @@ In stem phase, server disables diffusion
 
 
 def start_gossip_threads(
-        peer_set: Set['Peer'], block_queue: queue.Queue['Block']):
+        peer_set: Set['Peer'], block_queues: List[queue.Queue['Block']]):
     # Peer set is largely handled by the transport plugins
     # There is a unified set so gossip logic is not repeated
     seed = urandom(32)
 
     add_onionr_thread(
-        gossip_server, 1, peer_set, block_queue, seed, initial_sleep=0.2)
+        gossip_server, 1, peer_set, block_queues, seed, initial_sleep=0.2)
 
     threading.Thread(
         target=gossip_client,
-        args=[peer_set, block_queue, seed], daemon=True).start()
+        args=[peer_set, block_queues, seed], daemon=True).start()
     onionrplugins.events.event('gossip_start', data=peer_set, threaded=True)
-    for _ in range(2):
+    for _ in range(BOOTSTRAP_ATTEMPTS):
         onionrplugins.events.event(
             'bootstrap', data={'peer_set': peer_set, 'callback': connect_peer},
             threaded=False)
@@ -59,5 +60,3 @@ def start_gossip_threads(
         if len(peer_set):
             return
     logger.error("Could not connect to any peers :(", terminal=True)
-
-

src/gossip/client/__init__.py

@@ -8,6 +8,7 @@ from typing import Set
 from time import sleep
 
 from queue import Queue
+from ..connectpeer import connect_peer
 
 if TYPE_CHECKING:
     from onionrblocks import Block
@@ -20,7 +21,9 @@ from gossip.phase import DandelionPhase
 from onionrthreads import add_onionr_thread
 
 from .announce import do_announce
-#from .peerexchange import get_new_peers
+from .dandelionstem import stem_out
+from .peerexchange import get_new_peers
+
 """
 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
@@ -48,25 +51,25 @@ def gossip_client(
     Stream new blocks
     """
 
-    def _trigger_new_peers_event(new_peer_set: Set['Peer']):
-        onionrplugins.events.event(
-            'new_peer',
-            data={'peers': peer_set, 'new_peers': new_peer_set})
+    do_announce(peer_set)
 
-    add_onionr_thread(do_announce, 3600, peer_set, initial_sleep=10)
-    """
     add_onionr_thread(
         get_new_peers,
-        1200, peer_set,  _trigger_new_peers_event, initial_sleep=5)
-    """
-
+        1200, peer_set, initial_sleep=5)
 
     dandelion_phase = DandelionPhase(dandelion_seed, 30)
+
     while True:
         while not len(peer_set):
             sleep(0.2)
         if dandelion_phase.is_stem_phase():
-            pass
+            try:
+                # Stem out blocks for (roughly) remaining epoch time
+                stem_out(
+                    block_queue, peer_set, dandelion_phase)
+            except TimeoutError:
+                continue
+            continue
         else:
             pass
 

src/gossip/client/dandelionstem.py

@@ -0,0 +1,20 @@
+from queue import Queue
+
+
+from typing import TYPE_CHECKING, Set
+
+if TYPE_CHECKING:
+    from onionrblocks import Block
+    from ..peer import Peer
+    from ..phase import DandelionPhase
+
+def stem_out(
+        block_queue: Queue['Block'],
+        peer_set: Set['Block'],
+        d_phase: DandelionPhase):
+    block = block_queue.get(block=True, timeout=time_remaining_secs)
+    raw_block = block.raw
+    block_size = len(block.raw)
+    block_id = block.id
+    del block
+

src/gossip/client/peerexchange.py

@@ -0,0 +1,64 @@
+from threading import Thread
+from time import sleep
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from socket import socket
+
+from onionrplugins import onionrevents
+
+from ..peer import Peer
+from ..commands import GossipCommands, command_to_byte
+from ..constants import PEER_AMOUNT_TO_ASK, TRANSPORT_SIZE_BYTES
+from .. import connectpeer
+
+MAX_PEERS = 10
+
+
+def _ask_peer(peer, peer_set):
+    s: 'socket' = peer.get_socket()
+    s.sendall(command_to_byte(GossipCommands.PEER_EXCHANGE))
+    # Get 10 max peers
+    for _ in range(MAX_PEERS):
+        peer = s.recv(TRANSPORT_SIZE_BYTES)
+        if not peer:
+            break
+        connect_data = {
+            'address': peer,
+            'callback': connectpeer.connect_peer,
+            'peer_set': peer_set
+        }
+        onionrevents.event('announce_rec', data=connect_data, threaded=True)
+    s.close()
+
+
+def get_new_peers(peer_set):
+    while not len(peer_set):
+        sleep(0.5)
+
+    # Deep copy the peer list
+    peer_list: Peer = list(peer_set)
+    peers_we_ask: Peer = []
+    asked_count = 0
+
+    while asked_count < PEER_AMOUNT_TO_ASK:
+        try:
+            peers_we_ask.append(peer_list.pop())
+        except IndexError:
+            break
+        asked_count += 1
+
+    if not len(peers_we_ask):
+        raise ValueError("No peers present in pool during get_new_peers")
+    peer_list.clear()  # Clear the deep copy so it doesn't occupy memory
+
+    # Start threads to ask the peers for more peers
+    threads = []
+    for peer in peers_we_ask:
+        t = Thread(target=_ask_peer, args=[peer, peer_set], daemon=True)
+        t.start()
+        threads.append(t)
+    peers_we_ask.clear()
+    # Wait for the threads to finish because this function is on a timer
+    for thread in threads:
+        thread.join()
+

src/gossip/constants.py

@@ -0,0 +1,5 @@
+BOOTSTRAP_ATTEMPTS = 5
+PEER_AMOUNT_TO_ASK = 3
+TRANSPORT_SIZE_BYTES = 64
+BLOCK_MAX_SIZE = 1024 * 2000
+BLOCK_ID_SIZE = 128

src/gossip/graph.py

@@ -0,0 +1,2 @@
+class DandelionGraph:
+    def

src/gossip/phase.py

@@ -26,6 +26,11 @@ class DandelionPhase:
             self._is_stem = False
 
 
+    def remaining_time(self) -> int:
+        current_time = int(time())
+        return self.epoch_interval - (current_time - self.epoch)
+
+
     def is_stem_phase(self) -> bool:
         current_time = int(time())
         if current_time - self.epoch >= self.epoch_interval:

src/gossip/server/__init__.py

@@ -1,18 +1,22 @@
 import asyncio
 from typing import TYPE_CHECKING
-from typing import Set
+from typing import Set, List
 
 from queue import Queue
-from .connectpeer import connect_peer
+
+from gossip import constants
+from ..connectpeer import connect_peer
 
 from onionrplugins import onionrevents
 
 if TYPE_CHECKING:
     from onionrblocks import Block
     from peer import Peer
+    from asyncio import StreamReader, StreamWriter
 
 from filepaths import gossip_server_socket_file
-from .commands import GossipCommands
+from ..commands import GossipCommands
+from .acceptstem import accept_stem_blocks
 """
 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
@@ -31,10 +35,11 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 def gossip_server(
         peer_set: Set['Peer'],
-        block_queue: Queue['Block'],
+        block_queues: List[Queue['Block']],
         dandelion_seed: bytes):
 
-    async def peer_connected(reader, writer):
+    async def peer_connected(
+            reader: 'StreamReader', writer: 'StreamWriter'):
         while True:
             try:
                 cmd = await asyncio.wait_for(reader.read(1), 60)
@@ -51,7 +56,8 @@ def gossip_server(
                     pass
                 case GossipCommands.ANNOUNCE:
                     async def _read_announce():
-                        address = await reader.read(56)
+                        address = await reader.read(
+                            constants.TRANSPORT_SIZE_BYTES)
                         onionrevents.event(
                             'announce_rec',
                             data={'peer_set': peer_set,
@@ -60,6 +66,14 @@ def gossip_server(
                             threaded=True)
                         writer.write(int(1).to_bytes(1, 'big'))
                     await asyncio.wait_for(_read_announce(), 10)
+                case GossipCommands.PEER_EXCHANGE:
+                    for peer in peer_set:
+                        writer.write(
+                            peer.transport_address.encode(
+                                'utf-8').removesuffix(b'.onion'))
+                case GossipCommands.PUT_BLOCKS:
+                    # Create block queue & append stemmed blocks to it
+                    await accept_stem_blocks(block_queues, reader, writer)
             break
 
         await writer.drain()

src/gossip/server/acceptstem.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING
+from typing import List
+from queue import Queue
+from time import time
+from asyncio import wait_for
+
+from ..constants import BLOCK_ID_SIZE, BLOCK_MAX_SIZE
+
+
+block_size_digits = len(str(BLOCK_MAX_SIZE))
+base_wait_timeout = 10
+
+if TYPE_CHECKING:
+    from onionrblocks import Block
+    from asyncio import StreamWriter, StreamReader
+
+
+async def accept_stem_blocks(
+        block_queues: List[Queue['Block']],
+        reader: 'StreamReader',
+        writer: 'StreamWriter'):
+
+    # Start getting the first block
+    read_routine = reader.read(BLOCK_ID_SIZE)
+    stream_start_time = int(time())
+    max_accept_blocks = 1000
+
+    q = Queue()
+    block_queues.append(q)
+
+    for _ in range(max_accept_blocks):
+        block_id = await wait_for(read_routine, base_wait_timeout)
+        block_size = int(
+            await wait_for(
+                reader.read(block_size_digits),
+                base_wait_timeout)).decode('utf-8')
+
+
+        if not all(c in "0123456789" for c in block_size):
+            raise ValueError("Invalid block size data (non 0-9 char)")
+        if block_size > BLOCK_MAX_SIZE:
+            raise ValueError("Max block size")
+        
+
+
+    
+
+

static-data/default-plugins/tor/main.py

@@ -78,7 +78,7 @@ def on_gossip_start(api, data: Set[Peer] = None):
         controller.authenticate()
         logger.info(
             "Tor socks is listening on " +
-            f"{controller.get_listeners('SOCKS')}", terminal=True)
+            f"{controller.get_listeners('SOCKS')[0]}", terminal=True)
         key = config.get('tor.key')
         new_address = ''
         if not key:

static-data/default-plugins/tor/torpeer.py

@@ -4,6 +4,8 @@ import socks
 class TorPeer:
 
     def __init__(self, socks_host, socks_port, onion_address):
+        if not onion_address or onion_address == '.onion':
+            raise ValueError("Invalid transport address")
         self.transport_address = self.onion_address = onion_address
         self.socks_host = socks_host
         self.socks_port = socks_port