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                ## HTTP工作原理 HTTP協議定義Web客戶端如何從Web服務器請求Web頁面,以及服務器如何把Web頁面傳送給客戶端。HTTP協議采用了請求/響應模型。 客戶端向服務器發送一個請求報文,請求報文包含請求的方法、URL、協議版本、請求頭部和請求數據。 服務器以一個狀態行作為響應,響應的內容包括協議的版本、成功或者錯誤代碼、服務器信息、響應頭部和響應數據。
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