HTTP協議常見的響應

理論基礎：

HTTP 協議是超文字傳輸通訊協定 (HTTP)的簡稱，主要內容定義在RFC2616。

HTTP協議由來自用戶端（瀏覽器）的請求和來自服務端（web伺服器）的回應群組成。

HTTP請求的方法有：

Method         = "OPTIONS"                ; Section 9.2                      | "GET"                    ; Section 9.3                      | "HEAD"                   ; Section 9.4                      | "POST"                   ; Section 9.5                      | "PUT"                    ; Section 9.6                      | "DELETE"                 ; Section 9.7                      | "TRACE"                  ; Section 9.8                      | "CONNECT"                ; Section 9.9                      | extension-method       extension-method = token

其中GET POST HEAD是最常用的，其他的不經常用。

HTTP協議常見的響應：

Status-Code    =            "100"  ; Section 10.1.1: Continue          | "101"  ; Section 10.1.2: Switching Protocols          | "200"  ; Section 10.2.1: OK          | "201"  ; Section 10.2.2: Created          | "202"  ; Section 10.2.3: Accepted          | "203"  ; Section 10.2.4: Non-Authoritative Information          | "204"  ; Section 10.2.5: No Content          | "205"  ; Section 10.2.6: Reset Content          | "206"  ; Section 10.2.7: Partial Content          | "300"  ; Section 10.3.1: Multiple Choices          | "301"  ; Section 10.3.2: Moved Permanently          | "302"  ; Section 10.3.3: Found          | "303"  ; Section 10.3.4: See Other          | "304"  ; Section 10.3.5: Not Modified          | "305"  ; Section 10.3.6: Use Proxy          | "307"  ; Section 10.3.8: Temporary Redirect          | "400"  ; Section 10.4.1: Bad Request          | "401"  ; Section 10.4.2: Unauthorized          | "402"  ; Section 10.4.3: Payment Required          | "403"  ; Section 10.4.4: Forbidden          | "404"  ; Section 10.4.5: Not Found          | "405"  ; Section 10.4.6: Method Not Allowed          | "406"  ; Section 10.4.7: Not Acceptable          | "407"  ; Section 10.4.8: Proxy Authentication Required                    | "408"  ; Section 10.4.9: Request Time-out                    | "409"  ; Section 10.4.10: Conflict                    | "410"  ; Section 10.4.11: Gone                    | "411"  ; Section 10.4.12: Length Required                    | "412"  ; Section 10.4.13: Precondition Failed                    | "413"  ; Section 10.4.14: Request Entity Too Large                    | "414"  ; Section 10.4.15: Request-URI Too Large                    | "415"  ; Section 10.4.16: Unsupported Media Type                    | "416"  ; Section 10.4.17: Requested range not satisfiable                    | "417"  ; Section 10.4.18: Expectation Failed                    | "500"  ; Section 10.5.1: Internal Server Error                    | "501"  ; Section 10.5.2: Not Implemented                    | "502"  ; Section 10.5.3: Bad Gateway                    | "503"  ; Section 10.5.4: Service Unavailable                    | "504"  ; Section 10.5.5: Gateway Time-out                    | "505"  ; Section 10.5.6: HTTP Version not supported                    | extension-code

實驗部分：

使用telnet做HTTP協議互動示範.