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  2. HTTP persistent connection - Wikipedia

    en.wikipedia.org/wiki/HTTP_persistent_connection

    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.

  3. List of HTTP header fields - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_header_fields

    The domain name of the server (for virtual hosting), and the TCP port number on which the server is listening. The port number may be omitted if the port is the standard port for the service requested. Mandatory since HTTP/1.1. [17] If the request is generated directly in HTTP/2, it should not be used. [18] Host: en.wikipedia.org:8080. Host: en ...

  4. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...

  5. WebSocket - Wikipedia

    en.wikipedia.org/wiki/WebSocket

    The client sends an HTTP request (method GET, version ≥ 1.1) and the server returns an HTTP response with status code 101 (Switching Protocols) on success. This means a WebSocket server can use the same port as HTTP (80) and HTTPS (443) because the handshake is compatible with HTTP.

  6. US tourists can’t visit North Korea. This American spent six ...

    www.aol.com/us-tourists-t-visit-north-111348060.html

    Justin Martell recently became the first known American to step foot inside the secretive nation since the onset of the pandemic more than five years ago.

  7. Teen Explains Why She Refuses to Let Younger Sister Borrow ...

    www.aol.com/teen-explains-why-she-refuses...

    A teenager has a specific reason for keeping her books away from her younger sister.. In a post on Reddit's "Am I the A-----?" forum, the teen, 17, wrote that she has "allowed" her sibling, 14 ...

  8. Tax deductions and credits may boost your refund. Which ones ...

    www.aol.com/tax-deductions-credits-may-boost...

    The IRS reported last year that taxpayers had left more than $1 billion in unclaimed refunds on the table. To ensure you get what you’re owed this year, take some time to research deductions and ...

  9. HTTP pipelining - Wikipedia

    en.wikipedia.org/wiki/HTTP_pipelining

    HTTP pipelining is a feature of HTTP/1.1, which allows multiple HTTP requests to be sent over a single TCP connection without waiting for the corresponding responses. [1] HTTP/1.1 requires servers to respond to pipelined requests correctly, with non-pipelined but valid responses even if server does not support HTTP pipelining.