HTTPS: Encrypted Connections
HTTPS is not the opposite of HTTP, but its younger cousin. The two are essentially the same, in that both of them refer to the same “hypertext transfer protocol” that enables requested web data to be presented on your screen. But, HTTPS is still slightly different, more advanced, and much more secure.

Simply put, HTTPS protocol is an extension of HTTP. That “S” in the abbreviation comes from the word Secure and it is powered by Transport Layer Security (TLS) [the successor to Secure Sockets Layer (SSL)], the standard security technology that establishes an encrypted connection between a web server and a browser.

HTTPS：加密的連接
HTTPS不是HTTP的對立，而是它的堂兄XD 兩者本質上是相同的，因為它們都引用相同的“超文本傳輸協議”，從而可以在屏幕上顯示所請求的Web數據。 但是，HTTPS仍然略有不同，更高級且更安全。

簡而言之，HTTPS協議是HTTP的擴展。 縮寫中的“ S”來自安全一詞，由傳輸層安全性（TLS）[the successor to Secure Sockets Layer（SSL）]提供支持，該標準是在Web服務器和服務器之間建立加密連接的標準安全技術。 瀏覽器。

遇到錯誤

Restarting Apache httpd web server: apache2AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.2. Set the 'Ser
verName' directive globally to suppress this message
(98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
AH00015: Unable to open logs
Action 'start' failed.
The Apache error log may have more information.
 failed!

(98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
AH00015: Unable to open logs
Action 'start' failed.

SSL

* SSL包含記錄層（Record Layer）和傳輸層，記錄層協定確定傳輸層資料的封裝格式。傳輸層安全協定使用X.509認證，之後利用非對稱加密演算來對通訊方做身分認證，之後交換對稱金鑰作為會談金鑰（Session key）。這個會談金鑰是用來將通訊兩方交換的資料做加密，保證兩個應用間通訊的保密性和可靠性，使客戶與伺服器應用之間的通訊不被攻擊者竊聽。