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 中没有指定文件或测试，因此请先定位 Python SDK 中发送请求和处理进度的路径。将其行为与 TypeScript SDK 的 60 秒默认值以及关于 resetTimeoutOnProgress 的讨论进行比较。完成的标准是：针对已发送的请求，实现并验证达成共识的默认超时行为。