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According to the specification, the 502 status code indicates that the server, while acting as a gateway or proxy, received an invalid response from an upstream server. The Occurrence [ edit ]
The response provided by a cache is stale (the content's age exceeds a maximum age set by a Cache-Control header or heuristically chosen lifetime). 111 Revalidation Failed The cache was unable to validate the response, due to an inability to reach the origin server. 112 Disconnected Operation
Range Purpose x0x: Syntax These replies refer to syntax errors, syntactically correct commands that don't fit any functional category, unimplemented or superfluous commands.
502 Bad Gateway The server is acting as a gateway or proxy, and received an invalid response from a downstream server while attempting to fulfill the request. [1]: §21.5.3 503 Service Unavailable The server is undergoing maintenance or is temporarily overloaded and so cannot process the request.
In 2013, reCAPTCHA began implementing behavioral analysis of the browser's interactions to predict whether the user was a human or a bot. The following year, Google began to deploy a new reCAPTCHA API, featuring the "no CAPTCHA reCAPTCHA"—where users deemed to be of low risk only need to click a single checkbox to verify their identity. A ...
Google Japan has open sourced the "firmware, circuit diagrams, and design drawings" for all of its novelty input devices, beginning with Google Japanese Input Morse version on April 1, 2012, to allow anyone to build their own versions of the devices. [255] On April 1, 2013, Google announced Google+ Emotion.
Luis von Ahn (Spanish: [ˈlwis fon ˈan]; born 19 August 1978) is a Guatemalan-American entrepreneur and software developer.He is the founder of the company reCAPTCHA, which was sold to Google in 2009, [2] and the co-founder and CEO of Duolingo. [3]
On Roblox, it is especially dangerous because the currency is called “Robux” — a cute name that makes it even harder for kids to realize they are using real money.