A, HTTP is the meaning of the end-to-end first - request information must reach to the origin server (not a proxy server) containing request file resources, and the proxy server to cache this information, then the problem is coming, the proxy server can cache the request information, or cache is the response of the request arrives at the source server after information,

Two, jump line by the first meaning is first applies only to a single forward, will no longer with the agent by caching or forwarding,
There are several meaning is not very clear -
1 what's the meaning of the single forward is the Max - recently=1? Namely after a proxy server must go directly to the source server?
2, (due to no longer forward) by caching or agent, here is the problem of concept, HTTP proxy is - HTTP proxy server cache - a proxy server/client cache cache) under I understand, I can say that detailed the first request may be can't walk out of the client, because of the client cache?


Then there is the book told a few first field: connection, keep - the Alive... Wait, I want to ask when the connection is: no - when the cache is not accord with the meaning of the end-to-end first? Why also said that the connection is actually jump first field

CodePudding user response:

Finally to jump the line by the first field please explain in detail, is really a difficult problem