Connection general header controls whether or not the network connection stays open after the current transaction finishes. If the value sent is
keep-alive, the connection is persistent and not closed, allowing for subsequent requests to the same server to be done.
Except for the standard hop-by-hop headers (
Proxy-Authenticate), any hop-by-hop headers used by the message must be listed in the
Connection header, so that the first proxy knows it has to consume them and not forward them further. Standard hop-by-hop headers can be listed too (it is often the case of
Keep-Alive, but this is not mandatory).
Connection: keep-alive Connection: close
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