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Under HTTP 1.0, connections should always be closed by the server after sending the response. [1]Since at least late 1995, [2] developers of popular products (browsers, web servers, etc.) using HTTP/1.0, started to add an unofficial extension (to the protocol) named "keep-alive" in order to allow the reuse of a connection for multiple requests/responses.
The Keep Alive signal can be used to trick intermediate hosts to not close the connection due to inactivity. It is also possible that one host is no longer listening (e.g. application or system crash). In this case, the connection is closed, but no FIN was ever sent. In this case, a KeepAlive packet can be used to interrogate a connection to ...
A keepalive is a message sent by one device to another to check that the link between the two is operating, or to prevent the link from being broken. Keepalive or keep-alive may also refer to: HTTP keep-alive , using a single TCP connection to send and receive multiple HTTP requests/responses
As there are only two endpoints on a tunnel, the tunnel is a point-to-point connection and PPP is a natural choice as a data link layer protocol between the virtual network interfaces. PPP can assign IP addresses to these virtual interfaces, and these IP addresses can be used, for example, to route between the networks on both sides of the tunnel.
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This system isn’t unique to Amazon—it pervades the U.S. retail supply chain. Many companies choose to outsource shipping work to so-called third-party logistics providers, which in turn contract the work to staffing companies. At some of Walmart’s critical logistics hubs, multiple temp agencies may be providing workers under the same roof ...
HTTP/2 (originally named HTTP/2.0) is a major revision of the HTTP network protocol used by the World Wide Web. It was derived from the earlier experimental SPDY protocol, originally developed by Google. [1] [2] HTTP/2 was developed by the HTTP Working Group (also called httpbis, where "bis" means "twice") of the Internet Engineering Task Force ...