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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    504 Gateway Timeout The server was acting as a gateway or proxy and did not receive a timely response from the upstream server. 505 HTTP Version Not Supported The server does not support the HTTP version used in the request. 506 Variant Also Negotiates (RFC 2295) Transparent content negotiation for the request results in a circular reference. [27]

  3. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    504 Server Time-out The server attempted to access another server in attempting to process the request, and did not receive a prompt response. [1]: §21.5.5 505 Version Not Supported The SIP protocol version in the request is not supported by the server. [1]: §21.5.6 513 Message Too Large

  4. Timeout (computing) - Wikipedia

    en.wikipedia.org/wiki/Timeout_(computing)

    Network timeout preventing a Web browser from loading a page. In telecommunications and related engineering (including computer networking and programming), the term timeout or time-out has several meanings, including: A network parameter related to an enforced event designed to occur at the conclusion of a predetermined elapsed time.

  5. HTTP persistent connection - Wikipedia

    en.wikipedia.org/wiki/HTTP_persistent_connection

    However, the default connection timeout of Apache httpd 1.3 and 2.0 is as little as 15 seconds [6] [7] and just 5 seconds for Apache httpd 2.2 and above. [8] [9] The advantage of a short timeout is the ability to deliver multiple components of a web page quickly while not consuming resources to run multiple server processes or threads for too ...

  6. Gateway (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Gateway_(telecommunications)

    A gateway is a piece of networking hardware or software used in telecommunications networks that allows data to flow from one discrete network to another. Gateways are distinct from routers or switches in that they communicate using more than one protocol to connect multiple networks [1] [2] and can operate at any of the seven layers of the OSI model.

  7. 504 (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/504_(disambiguation)

    504 may refer to: 504, a year; Avro 504, a World War 1 era biplane aircraft built by Avro; Peugeot 504, a large family car; Area code 504, telephone code in Louisiana, United States; Section 504 of the Rehabilitation Act, which protects Americans with disabilities from discrimination by any entity that receives Federal funding

  8. Internet Gateway Device Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Gateway_Device...

    Without IGD one has to manually configure the gateway to allow traffic through, a process which is error-prone and time-consuming. UPnP comes with a solution for network address translation traversal (NAT traversal) that implements IGD. IGD makes it easy to do the following: Add and remove port mappings; Assign lease times to mappings

  9. State machine replication - Wikipedia

    en.wikipedia.org/wiki/State_machine_replication

    In computer science, state machine replication (SMR) or state machine approach is a general method for implementing a fault-tolerant service by replicating servers and coordinating client interactions with server replicas. The approach also provides a framework for understanding and designing replication management protocols.