400 The plain HTTP request was sent to HTTPS port

{{tag>[telnet]}} ====== telnet ====== ===== Example =====


telnet cli-helper.net 80 #웹 사이트와 telnet 통신


Trying 179.61.189.61...
Connected to cli-helper.net.
Escape character is '^]'.


GET / HTTP/1.1 			# METHOD 리소스주소 요청
Host: cli-helper.net 		# HOST 지정
				# 전송


HTTP/1.1 400 Bad Request
Server: hcdn
Date: Fri, 22 Dec 2023 15:53:38 GMT
Content-Type: text/html
Content-Length: 247
Connection: close
alt-svc: h3=":443"; ma=86400
x-hcdn-request-id: d3307c90e78cfd45dce5d85d6b134afa-nme-edge2


400 The plain HTTP request was sent to HTTPS port

400 Bad Request
The plain HTTP request was sent to HTTPS port
hcdn


Connection closed by foreign host.

===== INDEX MENU ===== {{indexmenu>.#1}}