reactAgent 使用远程沙箱问题，求指导

# reactAgent 使用远程沙箱问题。
- 使用远程沙箱写执行写文件操作，报错！
- 我的docker服务没有开启2375端口，生产环境因为安全原因也不会开放这个端口!

# 第一步，使用runtime-sandbox-server启动沙箱服务，服务正常。

```shell
runtime-sandbox-server

INFO: Started server process [19265]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO /Users/xxx/miniforge3/envs/python3.11/lib/python3.11/site-packages/agentscope_runtime/sandbox/manager/sandbox_manager.py:464 | 2026-06-04 10:54:32 | Watcher started, interval=1s
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO: 127.0.0.1:60843 - "GET /health HTTP/1.1" 200 OK

```

# 第二步，创建 reactAgent并使用沙箱

```java
@BeforeAll
static void setUp() {

。。。。。。
// 不指定远程沙箱是可行的。docker ps也是可以正常看到创建的沙箱容器。
// ManagerConfig managerConfig = ManagerConfig.builder().build();

// 指定远程沙箱报错！是什么原因？
ManagerConfig managerConfig = ManagerConfig.builder().baseUrl("http://127.0.0.1:8000").build();

sandboxService = new SandboxService(managerConfig);
sandboxService.start();
}

@Test
public void testFsSandboxTools() throws Exception {
FilesystemSandbox sandbox = new FilesystemSandbox(sandboxService, "testUser", "testSession");

ReactAgent fsSandboxToolAgent = ReactAgent.builder()
.name("tool_test_agent")
.model(chatModel)
.chatOptions(chatOptions)
.description("An agent that can use tools to answer questions.")
.instruction("You are a intelligent agent that can use tools to perform tasks.")
.tools(List.of(ToolkitInit.WriteFileTool(sandbox)))
.build();

。。。。。。
}
```

# 报错信息如下

```shell
11:15:25.461 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Initialized SandboxService in remote mode with base URL: http://127.0.0.1:8080
11:15:25.463 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Initializing SandboxService with container manager: DOCKER
11:15:25.463 [main] INFO io.agentscope.runtime.sandbox.manager.utils.PortManager -- PortManager initialized with port range: 49152-59152
11:15:25.466 [main] INFO io.agentscope.runtime.sandbox.manager.client.container.docker.DockerClient -- Connecting to Docker at tcp://localhost:2375 without TLS
11:15:25.600 [main] WARN io.agentscope.runtime.sandbox.manager.client.container.docker.DockerClient -- Failed to connect to Docker using configured host (localhost:2375): com.github.dockerjava.zerodep.shaded.org.apache.hc.client5.http.HttpHostConnectException: Connect to http://localhost:2375 failed: Connection refused
11:15:25.600 [main] INFO io.agentscope.runtime.sandbox.manager.client.container.docker.DockerClient -- Falling back to default Docker configuration
11:15:25.666 [main] INFO io.agentscope.runtime.sandbox.manager.client.container.docker.DockerClientStarter -- Docker client created
11:15:25.666 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- SandboxService started.
11:15:28.759 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Creating container in remote mode via RemoteHttpClient
11:15:28.763 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Getting sandbox info in remote mode via RemoteHttpClient
11:15:28.763 [main] ERROR io.agentscope.runtime.sandbox.box.Sandbox -- Failed to initialize sandbox: Sandbox null is not healthy: null (through reference chain: io.agentscope.runtime.sandbox.box.FilesystemSandbox["desktopUrl"])
11:15:28.763 [main] ERROR io.agentscope.runtime.sandbox.tools.fs.WriteFileTool -- Write File Error: Failed to initialize sandbox
11:15:31.391 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Creating container in remote mode via RemoteHttpClient
11:15:31.392 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Getting sandbox info in remote mode via RemoteHttpClient
11:15:31.393 [main] ERROR io.agentscope.runtime.sandbox.box.Sandbox -- Failed to initialize sandbox: Sandbox null is not healthy: null (through reference chain: io.agentscope.runtime.sandbox.box.FilesystemSandbox["desktopUrl"])
11:15:31.393 [main] ERROR io.agentscope.runtime.sandbox.tools.fs.WriteFileTool -- Write File Error: Failed to initialize sandbox
11:15:34.306 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Creating container in remote mode via RemoteHttpClient
11:15:34.307 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Getting sandbox info in remote mode via RemoteHttpClient
11:15:34.307 [main] ERROR io.agentscope.runtime.sandbox.box.Sandbox -- Failed to initialize sandbox: Sandbox null is not healthy: null (through reference chain: io.agentscope.runtime.sandbox.box.FilesystemSandbox["desktopUrl"])
11:15:34.307 [main] ERROR io.agentscope.runtime.sandbox.tools.fs.WriteFileTool -- Write File Error: Failed to initialize sandbox
11:15:38.245 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Creating container in remote mode via RemoteHttpClient
11:15:38.246 [main] INFO io.agentscope.runtime.sandbox.manager.SandboxService -- Getting sandbox info in remote mode via RemoteHttpClient
11:15:38.246 [main] ERROR io.agentscope.runtime.sandbox.box.Sandbox -- Failed to initialize sandbox: Sandbox null is not healthy: null (through reference chain: io.agentscope.runtime.sandbox.box.FilesystemSandbox["desktopUrl"])
11:15:38.246 [main] ERROR io.agentscope.runtime.sandbox.tools.fs.WriteFileTool -- Write File Error: Failed to initialize sandbox
=== Write File Sandbox Agent Tool Test ===
```