test: Update all test network hosts to respect iss claims from JWTs

tests/load/README_OAUTH.md

@@ -145,7 +145,7 @@ uv run python -m tests.load.oauth_benchmark -u 2 -d 30 --verbose
 | `--users` | `-u` | 2 | Number of concurrent users (dynamically created) |
 | `--duration` | `-d` | 30.0 | Test duration in seconds |
 | `--warmup` | `-w` | 5.0 | Warmup period before metrics collection (seconds) |
-| `--url` | | `http://127.0.0.1:8001/mcp` | MCP OAuth server URL |
+| `--url` | | `http://localhost:8001/mcp` | MCP OAuth server URL |
 | `--output` | `-o` | None | JSON output file path |
 | `--workload` | | `mixed` | Workload type: mixed, sharing, collaboration, baseline |
 | `--user-prefix` | | `loadtest` | Prefix for dynamically created usernames |

tests/load/benchmark.py

@@ -414,7 +414,7 @@ async def show_progress(
 @click.option(
     "--url",
     "-u",
-    default="http://127.0.0.1:8000/mcp",
+    default="http://localhost:8000/mcp",
     show_default=True,
     help="MCP server URL",
 )
@@ -463,7 +463,7 @@ def main(
         uv run python -m tests.load.benchmark -c 20 -d 60 --output results.json
 
         # Test OAuth server on port 8001
-        uv run python -m tests.load.benchmark --url http://127.0.0.1:8001/mcp
+        uv run python -m tests.load.benchmark --url http://localhost:8001/mcp
     """
     if verbose:
         logging.getLogger().setLevel(logging.DEBUG)

tests/load/oauth_benchmark.py

@@ -51,7 +51,7 @@ class OAuthCallbackServer:
     correlation, and stores them in a shared dictionary.
     """
 
-    def __init__(self, host: str = "127.0.0.1", port: int = 8081):
+    def __init__(self, host: str = "localhost", port: int = 8081):
         self.host = host
         self.port = port
         self.auth_states: dict[str, str] = {}
@@ -363,13 +363,13 @@ async def run_oauth_benchmark(
     try:
         # Get environment variables
         nextcloud_host = os.getenv("NEXTCLOUD_HOST", "http://localhost:8080")
-        callback_url = "http://127.0.0.1:8081/callback"
+        callback_url = "http://localhost:8081/callback"
 
         # Step 1: Start OAuth callback server
         print("Step 1/6: Starting OAuth callback server...")
-        callback_server = OAuthCallbackServer(host="127.0.0.1", port=8081)
+        callback_server = OAuthCallbackServer(host="localhost", port=8081)
         callback_server.start()
-        print("✓ Callback server listening on http://127.0.0.1:8081\n")
+        print("✓ Callback server listening on http://localhost:8081\n")
 
         # Step 2: Discover OIDC endpoints
         print("Step 2/6: Discovering OIDC endpoints...")
@@ -634,7 +634,7 @@ async def run_oauth_benchmark(
 )
 @click.option(
     "--url",
-    default="http://127.0.0.1:8001/mcp",
+    default="http://localhost:8001/mcp",
     show_default=True,
     help="MCP OAuth server URL",
 )

tests/load/oauth_pool.py

@@ -138,7 +138,7 @@ class OAuthUserPool:
         return profile
 
     async def create_user_session(
-        self, username: str, mcp_url: str = "http://127.0.0.1:8001/mcp"
+        self, username: str, mcp_url: str = "http://localhost:8001/mcp"
     ) -> ClientSession:
         """
         Create an MCP client session for a user.