The http/1.0 http/1.1 entries are duplicated in the http logs. Why?

Question

Apache HTTP Server

The entries in the logs are doubled:

84.54.236.194 - - [04/Nov/2019:15:57:53 +0300] "GET /api/telephony/start/?phone_number=%2B79267533875&id=1572872272.102439&internal=251&type=1&ring_duration=1&idsrc=0 HTTP/1.0" 200 1 "-" "curl/7.29.0"
84.54.236.194 - - [04/Nov/2019:15:57:54 +0300] "GET /api/telephony/start/?phone_number=%2B79267533875&id=1572872272.102439&internal=251&type=1&ring_duration=1&idsrc=0 HTTP/1.1" 200 11 "-" "curl/7.29.0"
84.54.236.194 - - [04/Nov/2019:15:58:27 +0300] "GET /api/telephony/missed/?phone_number=%2B79267533875&id=1572872272.102439&type=1&ring_duration=28&idsrc=0 HTTP/1.0" 200 1 "-" "curl/7.29.0"
84.54.236.194 - - [04/Nov/2019:15:58:27 +0300] "GET /api/telephony/missed/?phone_number=%2B79267533875&id=1572872272.102439&type=1&ring_duration=28&idsrc=0 HTTP/1.1" 200 11 "-" "curl/7.29.0"
77.39.26.75 - - [04/Nov/2019:16:03:10 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.0" 200 8032 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
77.39.26.75 - - [04/Nov/2019:16:03:10 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.1" 200 1310 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
77.39.26.75 - - [04/Nov/2019:16:37:43 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.0" 200 8162 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
77.39.26.75 - - [04/Nov/2019:16:37:43 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.1" 200 1410 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
94.229.111.232 - - [04/Nov/2019:17:41:59 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.0" 200 6599 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
94.229.111.232 - - [04/Nov/2019:17:41:59 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.1" 200 1424 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
94.229.111.232 - - [04/Nov/2019:17:43:20 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.0" 200 6599 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"
94.229.111.232 - - [04/Nov/2019:17:43:21 +0300] "GET /api/telephony/incoming/9267533875/ HTTP/1.1" 200 1424 "https://zt.nsb.su/ni/index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0"

Why is this happening?

Answer 1

In .htaccess add:

RewriteEngine On
RewriteCond %{THE_REQUEST} !HTTP/1.1$
RewriteRule .* - [F]

and see the settings here .