ln: add lightning_listen config option

electrum/tests/test_lntransport.py

@@ -0,0 +1,58 @@
+from electrum.ecc import ECPrivkey
+import asyncio
+from electrum.lntransport import LNResponderTransport, LNTransport
+from unittest import TestCase
+
+class TestLNTransport(TestCase):
+    def test_responder(self):
+        # local static
+        ls_priv=bytes.fromhex('2121212121212121212121212121212121212121212121212121212121212121')
+        # ephemeral
+        e_priv=bytes.fromhex('2222222222222222222222222222222222222222222222222222222222222222')
+
+        class Writer:
+            def __init__(self):
+                self.state = 0
+            def write(self, data):
+                assert self.state == 0
+                self.state += 1
+                assert len(data) == 50
+        class Reader:
+            def __init__(self):
+                self.state = 0
+            async def read(self, num_bytes):
+                assert self.state in (0, 1)
+                self.state += 1
+                if self.state-1 == 0:
+                    assert num_bytes == 50
+                    return bytes.fromhex('00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a')
+                elif self.state-1 == 1:
+                    assert num_bytes == 66
+                    return bytes.fromhex('00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba')
+        transport = LNResponderTransport(ls_priv, Reader(), Writer())
+        asyncio.get_event_loop().run_until_complete(transport.handshake(epriv=e_priv))
+    def test_loop(self):
+        l = asyncio.get_event_loop()
+        responder_shaked = asyncio.Event()
+        server_shaked = asyncio.Event()
+        responder_key = ECPrivkey.generate_random_key()
+        initiator_key = ECPrivkey.generate_random_key()
+        async def cb(reader, writer):
+            t = LNResponderTransport(responder_key.get_secret_bytes(), reader, writer)
+            self.assertEqual(await t.handshake(), initiator_key.get_public_key_bytes())
+            t.send_bytes(b'hello from server')
+            self.assertEqual(await t.read_messages().__anext__(), b'hello from client')
+            responder_shaked.set()
+        server_future = asyncio.ensure_future(asyncio.start_server(cb, '127.0.0.1', 42898))
+        l.run_until_complete(server_future)
+        async def connect():
+            reader, writer = await asyncio.open_connection('127.0.0.1', 42898)
+            t = LNTransport(initiator_key.get_secret_bytes(), responder_key.get_public_key_bytes(), reader, writer)
+            await t.handshake()
+            t.send_bytes(b'hello from client')
+            self.assertEqual(await t.read_messages().__anext__(), b'hello from server')
+            server_shaked.set()
+
+        asyncio.ensure_future(connect())
+        l.run_until_complete(responder_shaked.wait())
+        l.run_until_complete(server_shaked.wait())