C return 503 error

is still functioning properly, since it' s able to process the request and has opted to return the 503 response code. A 503 Service Unavailable error means that the website' s server is not available, usually due to maintenance or server. a 503 error might return with the HTTP_ STATUS_ SERVICE_ UNAVAIL error, and maybe also with a The service is. I had this error, and it was because I was doing some powershell scripting, so I had C: \ \ path instead of C: \ path. Web applications return HTTP Error 503 and WAS event 5189 on Windows 10 Version 1709 ( Fall Creators. b) a error occurred when calling read( ) [ bin/ varnishd/ cache_ httpconn. The number at the end is the value of errno, so since it' s 0 ( no error) I would assume that option a) occurred since read( ) shouldn' t return a negative number without. header( ' HTTP/ 1. 1 503 Service Temporarily Unavailable' ) ; header( ' Status: 503 Service Temporarily. < IfModule mod_ rewrite. c> RewriteEngine on # let this ( iescaped) IP address see the real site: # RewriteCond. I' ve a CGI module written in C & for some condition I want to return HTTP error 400 from this module. The problem is - I don' t know how to return HTTP error from the module. Looks like the ' return( - 1) ' in my module, returns the 500 te that the status must be known to the Apache code ( see the function send_ error_ response in http_ protocol. Additional Note: This will display the default/ configured ErrorDocument for the 503 Error.

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    share| improve this. 503 / maintenance. if ( $ maintenance = true) {. } error_ page 503 location {. Apache でも Nginx でも、 どちらともメンテナンス時は 503 を返して、 カスタム エラーページの機能を使って maintenance. html を表示する感じですね。. 503 Service Unavailable · 表 · 話 · 編 · 歴. HTTPステータスコードは、 HTTPにおいて Webサーバからのレスポンスの意味を表現する3桁の数字からなるコードで、 RFC 2616、 RFC 7231等によって定められている。 以下に一覧を示す。 目次. 1 1xx Informational 情報; 2 2xx Success 成功; 3 3xx Redirection リダイレクション; 4 4xx Client Error クライアントエラー. If the number of concurrent requests is near the estimated active threads ( 8 in our example) then return an http status code of 503.

    This will prevent too many worker threads becoming busy because once the peak throughput.