Environment

• Client: Dubbo-go, v1.5.9
• Protocol: rest
• Registry: zookeeper

Issue description

https://github.com/apache/dubbo-go/blob/main/protocol/rest/client/client_impl/resty_client.go#L59
err = c.SetDeadline(time.Now().Add(restOption.RequestTimeout))
http连接池复用tcp连接时，因为设置了deadline，resp未返回直接抛出io timeout。