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HTTP headers allow the client and the server to pass additional information with the request or the response. A request header consists of its case-insensitive name followed by a colon ':', then by its value (without line breaks). Leading white space before the value is ignored.
HTTP/1.1 302 Moved Temporarily
Wed, 27 Sep 2017 16:07:22 GMT
Wed, 27 Sep 2017 16:08:22 GMT
HIT from tianjin.qq com
HTTP/1.1 200 OK
Wed, 27 Sep 2017 16:08:34 GMT
Wed, 27 Sep 2017 16:07:34 GMT
The <head> element is a container for metadata (data about data) and is placed between the <html> tag and the <body> tag.
HTML metadata is data about the HTML document. Metadata is not displayed.
Metadata typically define the document title, character set, styles, links, scripts, and other meta information.
The following tags describe metadata: <title>, <style>, <meta>, <link>, <script>, and <base>.
Title is missing.
Meta description is missing.
Meta keywords are missing.
(3 records found)
<head> contains 1 <style> sections. Total size: 422 bytes.
(0 records found) <script>
<head> contains 2 internal script sections. Total size: 779 bytes.
<head> section doesn't contain a base section.