From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: "T.V Raman" Newsgroups: gmane.emacs.devel Subject: Re: Howto: Retrieve only URL metadata Date: Wed, 27 Mar 2024 06:32:33 -0700 Message-ID: <26116.8177.316975.522118@retriever.mtv.corp.google.com> References: <26115.36206.776145.115534@google.com> <52f4e345-b805-455b-9ec6-2907d3d1315a@alphapapa.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22626"; mail-complaints-to="usenet@ciao.gmane.io" Cc: raman@google.com, emacs-devel@gnu.org To: adam@alphapapa.net Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Mar 27 14:33:26 2024 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rpTPC-0005eh-B4 for ged-emacs-devel@m.gmane-mx.org; Wed, 27 Mar 2024 14:33:26 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rpTOW-00056j-4f; Wed, 27 Mar 2024 09:32:44 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rpTOU-000523-Ij for emacs-devel@gnu.org; Wed, 27 Mar 2024 09:32:42 -0400 Original-Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rpTOQ-0006Wd-1a for emacs-devel@gnu.org; Wed, 27 Mar 2024 09:32:40 -0400 Original-Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-6e6fb9a494aso5369750b3a.0 for ; Wed, 27 Mar 2024 06:32:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1711546355; x=1712151155; darn=gnu.org; h=references:in-reply-to:subject:cc:to:date:message-id :content-transfer-encoding:mime-version:from:from:to:cc:subject:date :message-id:reply-to; bh=WbKBUhGKf7xvB8/NfgwdG8zitgbgIYIXtD27fwY2kuw=; b=reL7RphnVfui7uySLIeDQpyRZYK9i7ejcuE2YqtfdtD8WzWSeI8vFOMEwfHb6xydL/ 7amAYdjS1ZGpU0Xb9bad7LIhzzhoj2YRQZWMeny/mZHe57dUVFagsfpsuq1sJFFMYh7r /PHa2GLcDy4ammU2GcbsMoNtRKNhmK4/6HxNFRpdSQnCxmMS6SejWfcJBR4fXUC6jNTu af+JvMimJdsQpGwrBdTbiKM2eMo1yxTP2Bz0zBXkHIUvddhMmqCWtL9jMORvaoJxn/66 zBuR3Azt84VixujgfJpONfC9qE4KhPf/gS/EItMUmdS6nR9E5UHq9DNwoa/GtHcKADOz 225g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711546355; x=1712151155; h=references:in-reply-to:subject:cc:to:date:message-id :content-transfer-encoding:mime-version:from:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=WbKBUhGKf7xvB8/NfgwdG8zitgbgIYIXtD27fwY2kuw=; b=D9E4wYyj2WT49vB3nHo/BvLndU4wBodxs5xTszJuVroA+2ntuN8eu6voZRREarZi4p /UdB2oXcyrQKk0AH18chvBmjH78cUAJXFgqq30NB+vXOxI0gFARwkiJLJLiC/PpKCkIu h8AtGSGAKnIcmdFifaXhgEr9Nn712EppdhHBoq/qBZB4vYf9tx2AwVdra+2qlDOWARXh pwm1mbVCRmZWwCbGVfERWPvDX8wj5v2BpLiPFXRel7v6HXHlLsqP+ig0O/NtYYjiBob9 Y5EPRngAz7QHDKNDeBzfWNscEUIatJdg1kVHL8IaogqFNjn+kPcMLZ+2B839vn0UW557 LcJg== X-Forwarded-Encrypted: i=1; AJvYcCWdNG3o73Nd3JnRXUPstSBjTb/Rs8vC2TqqK6KYbSI3D7M2jPhF4qxLpXaHE41ai3yB0KBzWY3kuXRRR/lFnzlISoo0 X-Gm-Message-State: AOJu0YzI9mCKOzICIjPHMwsNdYJJL1PKFC4ZGnq49bK4LIhMezDH5vGh Tib8A61uhWS7OvicQ1yWYl6IF5av8OxWEtcmIs9AhGPwwIXK7RftkyUacXk23qnowlRlDd0G8MC Dzw== X-Google-Smtp-Source: AGHT+IHKb9oCbErXEUmELF2YDVrA0xGGXwZPrRXyRfgUhcyAEEbO8RA7nfno2RHfwWsR4XK2RFFU8Q== X-Received: by 2002:a05:6a20:4a99:b0:1a3:6b62:397f with SMTP id fn25-20020a056a204a9900b001a36b62397fmr2070731pzb.15.1711546355169; Wed, 27 Mar 2024 06:32:35 -0700 (PDT) Original-Received: from retriever.mtv.corp.google.com ([2620:15c:b5:1:15a1:a5b4:f0c5:c88f]) by smtp.gmail.com with ESMTPSA id t184-20020a625fc1000000b006e7243bbd35sm8388681pfb.172.2024.03.27.06.32.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Mar 2024 06:32:34 -0700 (PDT) In-Reply-To: <52f4e345-b805-455b-9ec6-2907d3d1315a@alphapapa.net> X-Mailer: VM 8.1.1 under 30.0.50 (x86_64-pc-linux-gnu) Received-SPF: pass client-ip=2607:f8b0:4864:20::429; envelope-from=raman@google.com; helo=mail-pf1-x429.google.com X-Spam_score_int: -188 X-Spam_score: -18.9 X-Spam_bar: ------------------ X-Spam_report: (-18.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, NICE_REPLY_A=-1.32, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:317342 Archived-At: Nice, this is even nicer! Adam Porter writes: > > Is there a light-weight means of just retrieving URL metadata given a > > URL using the url package in Emacs? > > > > Note: I know how to do that using Curl and parsing the output from a > > HEAD method call; am looking for a pure elisp solution > > FYI, if you'll forgive the transgression, since plz.el is in ELPA and > "part of Emacs", here's a simple way to do it: > > (plz-response-headers > (plz 'head > "https://lists.gnu.org/archive/html/emacs-devel/2024-03/msg00670.html" > :as 'response)) > > ;; ((date . "Wed, 27 Mar 2024 04:11:27 GMT") > ;; (server . "Apache/2.4.29 (Trisquel_GNU/Linux)") > ;; (strict-transport-security . "max-age=63072000; > includeSubDomains; preload") > ;; (x-frame-options . "sameorigin") > ;; (x-content-type-options . "nosniff") > ;; (last-modified . "Wed, 27 Mar 2024 03:44:54 GMT") > ;; (etag . "\"1472-6149c3ac97980-gzip\"") > ;; (accept-ranges . "bytes") > ;; (vary . "Accept-Encoding") > ;; (content-encoding . "gzip") > ;; (content-length . "2022") > ;; (content-type . "text/html")) > > A future version will probably simplify that, returning the alist of > headers directly for calling: > > (plz 'head URL) --