Spring AI "Error from MCP server: SseError: SSE error: TypeError: terminated: other side closed"

Bug description mcp-server connection closed by server, sse transport

Environment spring ai version: 1.0.1 java version: 17

Steps to reproduce use npx -y @modelcontextprotocol/inspector connect to mcp-server, after a while, the error appeared. here is full info: Error from MCP server: SseError: SSE error: TypeError: terminated: other side closed at _eventSource.onerror (file:///Users/yeshimin/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/client/sse.js:82:31) at EventSource.scheduleReconnect_fn (file:///Users/yeshimin/.npm/_npx/5a9d879542beca3a/node_modules/eventsource/dist/index.js:248:53) at file:///Users/yeshimin/.npm/_npx/5a9d879542beca3a/node_modules/eventsource/dist/index.js:98:174 at process.processTicksAndRejections (node:internal/process/task_queues:95:5) { code: undefined, event: { type: 'error', message: 'TypeError: terminated: other side closed', code: undefined, defaultPrevented: false, cancelable: false, timeStamp: 216473083.699792 } }

Is there any configuration that can resolve this, or is it a bug ?

Thank you !

Comment From: yeshimin

I add proxy_read_timeout 3600 and proxy_send_timeout 3600 in nginx config, a new error info occured:

Error from MCP server: SseError: SSE error: TypeError: terminated: Body Timeout Error
    at _eventSource.onerror (file:///Users/yeshimin/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/client/sse.js:82:31)
    at EventSource.scheduleReconnect_fn (file:///Users/yeshimin/.npm/_npx/5a9d879542beca3a/node_modules/eventsource/dist/index.js:248:53)
    at file:///Users/yeshimin/.npm/_npx/5a9d879542beca3a/node_modules/eventsource/dist/index.js:98:174
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  code: undefined,
  event: {
    type: 'error',
    message: 'TypeError: terminated: Body Timeout Error',
    code: undefined,
    defaultPrevented: false,
    cancelable: false,
    timeStamp: 320434.630833
  }
}

Is there a best-practice Nginx configuration for Spring AI MCP Server ?