test(transport): add RPC timeout clamping and secure endpoint scheme validation specs

tests/wave11_rpc_timeout_test.py

@@ -0,0 +1,28 @@
+import unittest
+
+class TestWave11RPCTransportTimeout(unittest.TestCase):
+    def test_rpc_timeout_clamping(self):
+        default_timeout_sec = 15
+        max_timeout_sec = 60
+        min_timeout_sec = 2
+
+        def clamp_timeout(requested: int) -> int:
+            if requested <= 0:
+                return default_timeout_sec
+            return max(min_timeout_sec, min(max_timeout_sec, requested))
+
+        self.assertEqual(clamp_timeout(0), 15)
+        self.assertEqual(clamp_timeout(1), 2)
+        self.assertEqual(clamp_timeout(30), 30)
+        self.assertEqual(clamp_timeout(100), 60)
+
+    def test_rpc_endpoint_url_protocol_scheme(self):
+        def is_secure_endpoint(url: str) -> bool:
+            return url.startswith("https://") or url.startswith("wss://")
+
+        self.assertTrue(is_secure_endpoint("https://soroban-rpc.mainnet.stellar.org"))
+        self.assertTrue(is_secure_endpoint("wss://soroban-events.stellar.org"))
+        self.assertFalse(is_secure_endpoint("http://unencrypted-node.net"))
+
+if __name__ == '__main__':
+    unittest.main()