External Protocol Registry
=========================

Central registry for managing and monitoring external protocol connections.
Provides service discovery, health monitoring, and connection pooling.

**Docstring:**

"""
External Protocol Registry

Central registry for managing and monitoring external protocol connections.
Provides service discovery, health monitoring, and connection pooling.
"""

**Features:**
- Service discovery
- Health monitoring
- Connection pooling

**Example:**

.. code-block:: python

   registry = ExternalRegistry()
   await registry.register("grpc_scada", "grpc", "192.168.1.10:50051")
   conn = await registry.get_connection("grpc_scada")
   health = await registry.health_check("grpc_scada")