View HTTP Request and Response Header

http://web-sniffer.net/

For more information on HTTP see RFC 2616
HTTP(S)-URL: (IDN allowed)
HTTP version: HTTP/1.1 HTTP/1.0 (with Host header) HTTP/1.0 (without Host header)
Raw HTML view Accept-Encoding: gzip • Request type: GET POST HEAD TRACE
User agent: Web-SnifferInternet Explorer 6Internet Explorer 7Firefox 3Google Chrome 5Safari 5iPhone Mobile SafariNetscape 4.8Opera 9.2Googlebotnoneyour user agent

Features:

• list of user agents
• switch between HTTP/1.1 and HTTP/1.0
• test If-Modified-Since and If-Match headers
• support WWW-Authenticate
• search engine redirect added – all bots will be moved permanently to frontpage
• the URL may also be an Internationalized Domain Names (IDN)
• secure connections (HTTPS) allowed

See also:

• RFC 2616 - Hypertext Transfer Protocol (HTTP)
• RFC 3490 - Internationalizing Domain Names in Applications (IDNA)