Add MCP proxy address config support, better error messages

client/src/utils/configUtils.ts

@@ -0,0 +1,14 @@
+import { InspectorConfig } from "@/lib/configurationTypes";
+import { DEFAULT_MCP_PROXY_LISTEN_PORT } from "@/lib/constants";
+
+export const getMCPProxyAddress = (config: InspectorConfig): string => {
+  const proxyFullAddress = config.MCP_PROXY_FULL_ADDRESS.value as string;
+  if (proxyFullAddress) {
+    return proxyFullAddress;
+  }
+  return `http://${window.location.hostname}:${DEFAULT_MCP_PROXY_LISTEN_PORT}`;
+};
+
+export const getMCPServerRequestTimeout = (config: InspectorConfig): number => {
+  return config.MCP_SERVER_REQUEST_TIMEOUT.value as number;
+};