HTTP persistent connection
HTTP persistent connection, also called HTTP keep-alive, or HTTP connection reuse, is the idea of using a single TCP connection to send and receive multiple HTTP requests/responses, as opposed to opening a new connection for every single request/response pair. The newer HTTP/2 protocol uses the same idea and takes it further to allow multiple concurrent requests/responses to be multiplexed over a single connection.
| HTTP |
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| Request methods |
| Header fields |
| Response status codes |
| Security access control methods |
| Security vulnerabilities |
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