add concurrent_hub_requests conf

lbry/conf.py

@@ -650,6 +650,7 @@ class Config(CLIConfig):
         "Maximum number of peers to connect to while downloading a blob", 4,
         previous_names=['max_connections_per_stream']
     )
+    concurrent_hub_requests = Integer("Maximum number of concurrent hub requests", 32)
     fixed_peer_delay = Float(
         "Amount of seconds before adding the reflector servers as potential peers to download from in case dht"
         "peers are not found or are slow", 2.0

lbry/wallet/manager.py

@@ -187,6 +187,7 @@ class WalletManager:
             'default_servers': config.lbryum_servers,
             'known_hubs': config.known_hubs,
             'jurisdiction': config.jurisdiction,
+            'concurrent_hub_requests': config.concurrent_hub_requests,
             'data_path': config.wallet_dir,
             'tx_cache_size': config.transaction_cache_size
         }
@@ -238,6 +239,7 @@ class WalletManager:
             'known_hubs': self.config.known_hubs,
             'jurisdiction': self.config.jurisdiction,
             'hub_timeout': self.config.hub_timeout,
+            'concurrent_hub_requests': self.config.concurrent_hub_requests,
             'data_path': self.config.wallet_dir,
         }
         if Config.lbryum_servers.is_set(self.config):

lbry/wallet/network.py

@@ -20,7 +20,7 @@ log = logging.getLogger(__name__)
 
 
 class ClientSession(BaseClientSession):
-    def __init__(self, *args, network: 'Network', server, timeout=30, **kwargs):
+    def __init__(self, *args, network: 'Network', server, timeout=30, concurrency=32, **kwargs):
         self.network = network
         self.server = server
         super().__init__(*args, **kwargs)
@@ -30,7 +30,11 @@ class ClientSession(BaseClientSession):
         self.response_time: Optional[float] = None
         self.connection_latency: Optional[float] = None
         self._response_samples = 0
-        self._concurrency = asyncio.Semaphore(16)
+        self._concurrency = asyncio.Semaphore(concurrency)
+
+    @property
+    def concurrency(self):
+        return self._concurrency._value
 
     @property
     def available(self):
@@ -292,8 +296,8 @@ class Network:
             if (pong is not None and self.jurisdiction is not None) and \
                     (pong.country_name != self.jurisdiction):
                 continue
-            client = ClientSession(network=self, server=(host, port))
+            client = ClientSession(network=self, server=(host, port), timeout=self.config['hub_timeout'],
-            client = ClientSession(network=self, server=(host, port), timeout=self.config['hub_timeout'])
+                                   concurrency=self.config['concurrent_hub_requests'])
             try:
                 await client.create_connection()
                 log.warning("Connected to spv server %s:%i", host, port)

lbry/wallet/orchstr8/node.py

@@ -135,8 +135,9 @@ class WalletNode:
                     'explicit_servers': [(spv_node.hostname, spv_node.port)],
                     'default_servers': Config.lbryum_servers.default,
                     'data_path': self.data_path,
-                    'known_hubs': config.known_hubs if config else KnownHubsList()
+                    'known_hubs': config.known_hubs if config else KnownHubsList(),
                     'hub_timeout': 30,
+                    'concurrent_hub_requests': 32,
                 }
             },
             'wallets': [wallet_file_name]

tests/integration/blockchain/test_network.py

@@ -139,14 +139,18 @@ class ReconnectTests(IntegrationTestCase):
         await self.ledger.network.on_connected.first
         self.assertTrue(self.ledger.network.is_connected)
 
-    async def test_timeout_propagated_from_config(self):
+    async def test_timeout_and_concurrency_propagated_from_config(self):
         conf = Config()
         self.assertEqual(self.ledger.network.client.timeout, 30)
+        self.assertEqual(self.ledger.network.client.concurrency, 32)
         conf.hub_timeout = 123.0
-        conf.lbryum_servers = self.ledger.config['default_servers']
+        conf.concurrent_hub_requests = 42
+        conf.known_hubs = self.ledger.config['known_hubs']
+        conf.wallet_dir = self.ledger.config['data_path']
         self.manager.config = conf
         await self.manager.reset()
         self.assertEqual(self.ledger.network.client.timeout, 123)
+        self.assertEqual(self.ledger.network.client.concurrency, 42)
 
     # async def test_online_but_still_unavailable(self):
     #     # Edge case. See issue #2445 for context