pub async fn mcp_get_handler(
__arg0: State<Arc<McpState>>,
headers: HeaderMap,
) -> ResponseExpand description
MCP Streamable HTTP GET handler.
Opens a Server-Sent Events stream for server-initiated messages.
Clients use this to receive notifications and asynchronous responses
from the MCP server. The stream starts with an endpoint event
containing the session ID, then sends keepalive pings every 30 seconds.