No default timeout for requests (unlike TS SDK)

Initial Checks

• I confirm that I'm using the latest version of MCP Python SDK
• I confirm that I searched for my issue in https://github.com/modelcontextprotocol/python-sdk/issues before opening this issue

Description

Spec states: Implementations SHOULD establish timeouts for all sent requests, to prevent hung connections and resource exhaustion.

The TypeScript SDK does have a default timeout of 60 seconds on requests, and the difference between Python & TypeScript is the crux of https://github.com/modelcontextprotocol/typescript-sdk/issues/245 (which also suggests 60 seconds might not be long enough). Also related, TypeScript has a resetTimeoutOnProgress option (defaulting to falst), which would probably be useful if we do introduce a default to the Python SDK.

Example Code

Python & MCP Python SDK

Latest

Issue 中沒有指定檔案或測試，因此請先找出 Python SDK 中傳送 request 與處理進度的路徑。將其行為與 TypeScript SDK 的 60 秒預設值，以及關於 resetTimeoutOnProgress 的討論進行比較。完成的標準是：針對已傳送的 request，實作並驗證已達成共識的預設 timeout 行為。