Fix issue, SSE connection will terminate after 30 seconds (DEFAULT).

[zekozhang]

Motivation and Context

Base on: spring-projects/spring-ai#2267

The SSE connection will automatically disconnect 30 seconds after being established.

2025-02-24 18:13:39.403 [http-nio-8822-exec-2] INFO  i.m.server.McpAsyncServer - Client initialize request - Protocol: 2024-11-05, Capabilities: ClientCapabilities[experimental=null, roots=null, sampling=null], Info: Implementation[name=Spring AI MCP Client, version=1.0.0]
2025-02-24 18:14:09.564 [http-nio-8822-exec-5] WARN  o.s.w.s.m.s.DefaultHandlerExceptionResolver - Ignoring exception, response committed already: org.springframework.web.context.request.async.AsyncRequestTimeoutException
2025-02-24 18:14:09.564 [http-nio-8822-exec-5] WARN  o.s.w.s.m.s.DefaultHandlerExceptionResolver - Resolved [org.springframework.web.context.request.async.AsyncRequestTimeoutException]

How Has This Been Tested?

Step1:

Create a MCP server with spring-ai-mcp-server-webmvc-spring-boot-starter like spring-projects/spring-ai#2267

Step2:

Connect mcp server with any MCP client.

Step3:

Wait for 30 seconds, get logs

2025-02-24 18:13:39.403 [http-nio-8822-exec-2] INFO  i.m.server.McpAsyncServer - Client initialize request - Protocol: 2024-11-05, Capabilities: ClientCapabilities[experimental=null, roots=null, sampling=null], Info: Implementation[name=Spring AI MCP Client, version=1.0.0]
2025-02-24 18:14:09.564 [http-nio-8822-exec-5] WARN  o.s.w.s.m.s.DefaultHandlerExceptionResolver - Ignoring exception, response committed already: org.springframework.web.context.request.async.AsyncRequestTimeoutException
2025-02-24 18:14:09.564 [http-nio-8822-exec-5] WARN  o.s.w.s.m.s.DefaultHandlerExceptionResolver - Resolved [org.springframework.web.context.request.async.AsyncRequestTimeoutException]

Breaking Changes

N/A

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

N/A

[tzolov]

Thanks @zekozhang