问题
I received a request from and amazon web service with the user-agent on the header as : "user-agent: user-agent: Mozilla/" What does this mean? Is this legit or an attempt at an exploit? The request was redirected by the proxy server, could that have caused to add another user-agent tag?
来源：https://stackoverflow.com/questions/45598556/double-user-agent-tag-user-agent-user-agent-mozilla